Mode control method and device, equipment and storage medium

Abstract

The embodiment of the invention provides a mode control method and device, equipment and a storage medium, and relates to the field of temperature control technologies and cloud technologies. The method comprises the following steps: acquiring indoor and outdoor temperature difference of the temperature control system; determining the cut-in temperature difference of the refrigeration mode of the temperature control system according to the blower control demand value of the temperature control system; and under the condition that the indoor and outdoor temperature difference is larger than the cut-in temperature difference, the temperature control system is controlled to be switched to a refrigeration mode for operation. According to the technical scheme provided by the embodiment of the invention, the refrigeration effect of the temperature control system can be improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical fields of temperature control and cloud technology, and particularly relate to a mode control method and device, equipment and a storage medium. BACKGROUND

[0002] An air conditioner is a device that can regulate and control the temperature of indoor air of a building (such as a building) or a structure.

[0003] In related technologies, there are various refrigeration modes for air conditioners, such as a fluorine pump refrigeration mode using a natural cold source. In the running process, if the indoor-outdoor temperature difference is greater than the cut-in temperature difference of the fluorine pump refrigeration mode, the temperature control system adopts the fluorine pump refrigeration mode for refrigeration.

[0004] In the above related technology, the cut-in temperature difference of the fluorine pump refrigeration mode is a fixed value. When the indoor-outdoor temperature difference is greater than the cut-in temperature difference of the fluorine pump refrigeration mode, but the actual air supply fan demand of the air conditioner is large, that is, the internal load is large, if the fluorine pump refrigeration mode is still used for running, the refrigeration capacity may not be enough, which affects the refrigeration effect of the air conditioner. SUMMARY

[0005] Embodiments of the present application provide a mode control method, device, equipment and storage medium, which can improve the refrigeration effect of the temperature control system. The technical solutions provided by embodiments of the present application are as follows: According to an aspect of an embodiment of the present application, a mode control method is provided, the method comprising: obtaining an indoor-outdoor temperature difference of a temperature control system; determining a cut-in temperature difference of a refrigeration mode of the temperature control system according to a control demand value of an air supply fan of the temperature control system; controlling the temperature control system to switch to the refrigeration mode for running in a case where the indoor-outdoor temperature difference is greater than the cut-in temperature difference.

[0006] According to an aspect of an embodiment of the present application, a mode control device is provided, the device comprising: a temperature difference obtaining module configured to obtain an indoor-outdoor temperature difference of a temperature control system; a temperature difference determining module configured to determine a cut-in temperature difference of a refrigeration mode of the temperature control system according to a control demand value of an air supply fan of the temperature control system; a mode control module configured to control the temperature control system to switch to the refrigeration mode for running in a case where the indoor-outdoor temperature difference is greater than the cut-in temperature difference.

[0007] According to an aspect of an embodiment of the present application, a temperature control device is provided, the computer device comprising a processor and a memory, the memory storing a computer program, the computer program being loaded and executed by the processor to implement the above-mentioned mode control method.

[0008] According to an aspect of the embodiments of the present application, there is provided a chip, which comprises a programmable logic circuit and / or a computer program, and when the chip is running, is used to implement the mode control method.

[0009] According to an aspect of the embodiments of the present application, there is provided a computer readable storage medium, which stores a computer program, and the computer program is loaded and executed by a processor to implement the mode control method.

[0010] According to an aspect of the embodiments of the present application, there is provided a computer program product, which comprises a computer program stored in a computer readable storage medium. A processor of a terminal device reads the computer program from the computer readable storage medium, and the processor executes the computer program, so that the terminal device executes the mode control method.

[0011] The technical scheme provided by the embodiments of the present application can include the following beneficial effects: By dynamically adjusting the cut-in temperature difference of the refrigeration mode of the temperature control system according to the air supply fan control demand of the temperature control system, the cut-in temperature difference is adapted to the actual air supply fan control demand as much as possible, so that the rationality of switching the refrigeration mode is improved, and the refrigeration effect of the temperature control system is improved.

[0012] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of a scheme implementation environment provided by an embodiment of the present application; Figure 2 is a flowchart of a mode control method provided by an embodiment of the present application; Figure 3 is a flowchart of a mode control method provided by another embodiment of the present application; Figure 4 is a schematic diagram of the relationship between ΔTfc and air supply fan control demand CFF(k) provided by an embodiment of the present application; Figure 5 is a schematic diagram of the relationship between ΔTmix and air supply fan control demand CFF(k) provided by an embodiment of the present application; Figure 6 is a flowchart of a mode control method provided by another embodiment of the present application; Figure 7 is a block diagram of a mode control device provided by an embodiment of the present application; Figure 8is a structural block diagram of a temperature control device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0014] The exemplary embodiments will be described in detail hereinbelow with reference to the drawings. In the following description, the same numbers in different drawings represent the same or similar elements unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of methods consistent with some aspects of the present application as detailed in the appended claims.

[0015] First, some terms and concepts related to the embodiments of the present application are briefly introduced.

[0016] Temperature control system: a system that can regulate and control the temperature of the indoor environment air of a building (such as a building) or a structure. The temperature control system can include a temperature control device, which can also be referred to as an air conditioning device, a temperature control device, a temperature regulating device, etc. When the temperature control device has a refrigeration function, the temperature control device can also be referred to as a refrigeration device; when the temperature control device has a heating function, the temperature control device can also be referred to as a heating device.

[0017] In some embodiments, the temperature control device can be a fluorine pump air conditioning device. In some embodiments, the temperature control system has at least the following three refrigeration modes when refrigerating: compressor refrigeration mode, fluorine pump refrigeration mode and mixed refrigeration mode. Among them, the compressor refrigeration mode refers to a mode in which only the compressor refrigeration subsystem is turned on for refrigeration; the fluorine pump refrigeration mode refers to a mode in which only the fluorine pump refrigeration subsystem is turned on for refrigeration; the mixed refrigeration mode refers to a mode in which the compressor refrigeration subsystem and the fluorine pump refrigeration subsystem are turned on at the same time.

[0018] Refrigeration demand: the result calculated based on the difference between the indoor temperature detection value and the corresponding set value according to a specified calculation formula, which can be defined as the refrigeration demand, indicating the refrigeration amount to be produced by the temperature control device in the future.

[0019] Outdoor temperature detection value To: can be represented by the condenser inlet air temperature detection value, if there are multiple sensor values, the average of multiple sensors is taken as the outdoor temperature detection value To.

[0020] FC (Free Cooling, natural cooling) indoor-outdoor entering temperature difference upper limit: the maximum value of the indoor-outdoor temperature difference allowed to enter the fluorine pump refrigeration mode (default value is 30℃); FC indoor-outdoor entering temperature difference lower limit: the minimum value of the indoor-outdoor temperature difference allowed to enter the fluorine pump refrigeration mode (default value is 20℃); FC indoor-outdoor entering temperature difference air supply machine demand upper limit: upper limit of the air supply machine demand range calculated for the FC indoor-outdoor entering temperature difference; if this value is exceeded, the FC indoor-outdoor entering temperature difference takes the maximum value (by default, 100%); FC indoor-outdoor entering temperature difference air supply machine demand lower limit: lower limit of the air supply machine demand range calculated for the FC indoor-outdoor entering temperature difference; if this value is exceeded, the FC indoor-outdoor entering temperature difference takes the minimum value (by default, 0%).

[0021] Of course, the above-mentioned FC indoor-outdoor entering temperature difference upper boundary, FC indoor-outdoor entering temperature difference lower boundary, FC indoor-outdoor entering temperature difference air supply machine demand upper limit and FC indoor-outdoor entering temperature difference air supply machine demand lower limit can also take other values, and the embodiments of the present application do not make specific limitations on this.

[0022] MIX indoor-outdoor entering temperature difference upper boundary: maximum value of the indoor-outdoor temperature difference allowed to enter the fluorine pump refrigeration mode (by default, 20℃); MIX indoor-outdoor entering temperature difference lower boundary: minimum value of the indoor-outdoor temperature difference allowed to enter the fluorine pump refrigeration mode (by default, 10℃); MIX indoor-outdoor entering temperature difference air supply machine demand upper limit: upper limit of the air supply machine demand range calculated for the MIX indoor-outdoor entering temperature difference; if this value is exceeded, the MIX indoor-outdoor entering temperature difference takes the maximum value (by default, 100%); MIX indoor-outdoor entering temperature difference air supply machine demand lower limit: lower limit of the air supply machine demand range calculated for the MIX indoor-outdoor entering temperature difference; if this value is exceeded, the MIX indoor-outdoor entering temperature difference takes the minimum value (by default, 0%).

[0023] Of course, the above-mentioned MIX indoor-outdoor entering temperature difference upper boundary, MIX indoor-outdoor entering temperature difference lower boundary, MIX indoor-outdoor entering temperature difference air supply machine demand upper limit and MIX indoor-outdoor entering temperature difference air supply machine demand lower limit can also take other values, and the embodiments of the present application do not make specific limitations on this.

[0024] Cloud technology: refers to a hosting technology that unifies a series of resources such as hardware, software, network, etc. in a wide area network or local area network to realize data calculation, storage, processing and sharing.

[0025] Cloud technology is a general term for network technology, information technology, integration technology, management platform technology, application technology, etc. based on the application of cloud computing business model, which can form a resource pool, and can be used on demand, flexibly and conveniently. Cloud computing technology will become an important support. The background service of the technical network system needs a large amount of computing and storage resources, such as video websites, picture websites and more portal websites. With the high development and application of the Internet industry, every item in the future may have its own identification mark and needs to be transmitted to the background system for logical processing. Different levels of data will be processed separately, and various industry data will need strong system support, which can only be realized through cloud computing.

[0026] The Internet of Things (IOT): refers to real-time collection of any object or process that needs to be detected, connected and interactive through various information sensors, radio frequency identification technology, global positioning system, infrared sensor, laser scanner and other devices and technologies. Collecting its sound, light, heat, electricity, mechanics, chemistry, biology, position and other information needed, through various possible network access, realizing the ubiquitous connection of things and people, and realizing the intelligent perception, identification and management of objects and processes. The Internet of Things is based on the Internet, traditional telecommunications network and other information carriers. It allows all independent addressable ordinary physical objects to form an interconnected network. A strong example or temperature control system or temperature control device can be part of the Internet of Things, and can have communication connections with other objects, such as other home appliances and electronic devices.

[0027] In some embodiments, users can control the temperature control system through electronic devices such as smartphones, wearable devices, VR (Virtual Reality) devices, etc., such as controlling the temperature control system to turn on, turn off, switch temperature control mode, etc.

[0028] Cloud IOT aims to connect the information and instructions perceived by the sensing devices in the traditional Internet of Things to the Internet, truly realize networking, and realize massive data storage and operation through cloud computing technology. Due to the characteristics of the Internet of Things, the current running state of each "object" is connected and perceived in real time, and a large amount of data information will be generated in this process. How to summarize these information and how to filter useful information from massive information to support decision-making for future development have become key problems affecting the development of the Internet of Things, and the Internet of Things based on cloud computing and cloud storage technology has become a strong support for the technology and application of the Internet of Things. In some embodiments, the devices of the cloud IOT can collect data through the same sensor, and the collected data can be shared in the Internet of the cloud IOT. For example, the indoor temperature or outdoor temperature in the embodiments of the present application can be collected by the sensor of the temperature control system itself, or the temperature data collected by the sensor of other devices can be obtained through the cloud IOT.

[0029] Reference is made to Figure 1 which shows a schematic diagram of a scheme implementation environment provided by an embodiment of the present application, which can be implemented as a temperature control system for implementing the mode control method provided by the embodiments of the present application. In some embodiments, the temperature control system can include a temperature control device 100. As Figure 1 shown, the temperature control device 100 can include a compressor refrigeration subsystem 110 and a fluorine pump refrigeration subsystem 120.

[0030] In some embodiments, the compressor refrigeration subsystem 110 includes a compressor 11, a fluorine system evaporator 12, a condenser 13, an expansion valve 14, a DX (Direct Expansion) refrigeration auxiliary component 15, and a pipeline 16.

[0031] In some embodiments, the fluorine pump refrigeration subsystem 120 includes a refrigerant pump 17, the fluorine system evaporator 12, the condenser 13, the expansion valve 14, the DX refrigeration auxiliary component 15, and the pipeline 16.

[0032] The compressor refrigeration subsystem 110 and the fluorine pump refrigeration subsystem 120 can both implement a complete refrigerant cycle and output a refrigeration amount (such as outputting cold air). The compressor refrigeration subsystem 110 and the fluorine pump refrigeration subsystem 120 share the fluorine system evaporator 12, the condenser 13, the expansion valve 14, the DX refrigeration auxiliary component 15, and the pipeline 16.

[0033] In some embodiments, the temperature control device 100 can further include a chip 18 for controlling the operation of the temperature control device, such as controlling the opening, closing, switching of the refrigeration mode of the temperature control device 100. The compressor refrigeration subsystem 110 and the fluorine pump refrigeration subsystem 120 are respectively in communication connection with the chip 18.

[0034] In some embodiments, the temperature control device 100 can further include a sensor 19, such as a sensor for detecting the return air temperature detection value, a sensor for detecting the air temperature entering the condenser, etc., and the sensor 19 is in communication connection with the chip 18.

[0035] Those skilled in the art can understand that Figure 1 the structure shown in the figure does not constitute a limitation on the temperature control device 100, and can include more or fewer components than the figure, or combine certain components, or adopt different component arrangements.

[0036] The execution subject of each step of the technical scheme provided by the embodiments of the present application can be the temperature control device 100, such as the chip 18 in the temperature control device 100.

[0037] Currently, in the refrigeration process of the temperature control device, if the refrigeration mode includes the compressor refrigeration mode, the fluorine pump refrigeration mode and the mixed refrigeration mode. Then, if the indoor return air temperature set value is denoted as T, the outdoor temperature detection value is denoted as To, the temperature judgment condition for switching the refrigeration mode can be as follows: Cut into the fluorine pump refrigeration mode: T-To≥FC indoor-outdoor entering temperature difference (default 25℃) within 5 seconds; Cut out of the fluorine pump refrigeration mode: T-To<FC indoor-outdoor exiting temperature difference (default 20℃) within 30 seconds; Cut into the mixed refrigeration mode: T-To≥MIX indoor-outdoor entering temperature difference (default 20℃) within 5 seconds; Cut out of the mixed refrigeration mode: T-To<MIX indoor-outdoor exiting temperature difference (default 15℃) within 30 seconds.

[0038] In the related technology, the cut-in temperature difference and the cut-out temperature difference of each refrigeration mode are fixed values. When the supply-return air temperature difference detection value of the temperature control device is less than the supply-return air temperature difference set value, the supply fan speed of the temperature control device is reduced, the actual refrigeration capacity is reduced, and it indicates that the load of the temperature control device is reduced. If the temperature condition for entering the fluorine pump refrigeration mode is still a fixed value at this time, the temperature control device is still difficult to enter the fluorine pump refrigeration mode under the condition of small load, and can only use other refrigeration modes with high energy consumption, so that the natural cold source cannot be fully utilized and energy cannot be fully saved. Correspondingly, when the supply-return air temperature difference detection value of the temperature control device is greater than the supply-return air temperature difference set value, the supply fan speed of the temperature control device is increased, the actual refrigeration capacity is increased, and it indicates that the load of the temperature control device is increased. If the temperature condition for entering the fluorine pump refrigeration mode is still a fixed value at this time, the temperature control device does not timely cut out the fluorine pump refrigeration mode under the condition of large load, which will lead to low refrigeration efficiency of the device and affect the refrigeration effect of the temperature control device.

[0039] In the related technology, the indoor return air temperature set value T is generally not frequently changed, and the value of T-To is actually only determined by the outdoor temperature detection value To, which leads to that the determination result of the indoor-outdoor temperature difference is easy to be inconsistent with the actual value. For example, when the actual return air temperature detection value of the temperature control device is less than the return air temperature set value, that is, the actual indoor-outdoor temperature difference is less than the currently used indoor-outdoor temperature difference value, the current calculated value ΔT1 (T-To) meets the entering condition of the fluorine pump refrigeration mode or the mixed refrigeration mode, but actually ΔT2 (the actual temperature difference) is less than the FC / MIX indoor-outdoor entering temperature difference. That is, the fluorine pump refrigeration mode or the mixed refrigeration mode should not be entered at present, but the temperature control device still enters the fluorine pump refrigeration mode or the mixed refrigeration mode, thereby leading to inaccurate refrigeration mode control.

[0040] Therefore, the embodiments of the present application propose the following solutions. In the following, the technical solutions of the present application are introduced and described through several embodiments.

[0041] In some embodiments, the temperature control device includes a fluorine pump refrigeration mode and a mixed refrigeration mode.

[0042] The temperature condition for switching into the fluorine pump cooling mode is: within 5 seconds, the difference between the return air temperature detection value Tr and the condenser inlet air temperature To is △T=Tr-To≥the first cut-in temperature difference ΔTfc, ΔTfc is dynamically adjusted; Temperature conditions for switching into the mixed cooling mode: within 5 seconds, the difference between the return air temperature detection value Tr and the condenser inlet air temperature To is △T=Tr-To≥the second switching temperature difference ΔTmix, and ΔTmix is ​​dynamically adjusted.

[0043] In this embodiment, the first cut-in temperature difference ΔTfc and the second cut-in temperature difference Δtmix are both dynamically adjusted rather than fixed values. The cut-in temperature difference is adapted to the actual blower control requirements as much as possible, thereby improving the rationality of switching the cooling mode and further improving the cooling effect of the temperature control device.

[0044] Please refer to Figure 2 , which shows a flow chart of a mode control method provided by one embodiment of the present application. In this embodiment, the method is illustrated by applying it to the temperature control device described above. The method may include at least one of the following steps (210-230): Step 210: Obtain the indoor and outdoor temperature difference of the temperature control system.

[0045] In some embodiments, a temperature control system is used to regulate the temperature within an enclosed or semi-enclosed space, such as the indoor ambient air temperature of a building or structure. The temperature control system can lower the indoor temperature in cooling mode or raise the indoor temperature in heating mode. The present embodiments primarily utilize the cooling mode of the temperature control system as an example.

[0046] In some embodiments, the temperature control system hardware includes an outdoor unit and an indoor unit. The outdoor unit, also known as an air conditioner, allows the temperature control system to draw in air from the outside environment. The indoor unit, which can be mounted, vertical, or concealed, allows the temperature control system to blow fresh air into the room.

[0047] In some embodiments, the difference between the temperature of the air drawn into the outdoor unit and the temperature of the air in the room where the indoor unit is located, as determined by the temperature control system, is the indoor-outdoor temperature difference of the temperature control system. In the embodiments of the present application, the indoor-outdoor temperature difference refers to the difference between the indoor temperature and the outdoor temperature. Therefore, the outdoor temperature must be lower than the indoor temperature. If the outdoor temperature is greater than or equal to the indoor temperature, the temperature control system cannot utilize the outdoor natural cooling source to output cooling capacity to the indoor room, and the temperature control system naturally cannot switch to fluorine pump cooling mode or mixed cooling mode.

[0048] In step 220, the cut-in temperature difference of the refrigeration mode of the temperature control system is determined according to the air supply fan control demand value of the temperature control system.

[0049] In some embodiments, the air supply fan control demand value can be used to represent the refrigeration amount demand of the temperature control system. The air supply fan control demand value is positively correlated with the refrigeration amount demand, that is, the greater the refrigeration amount demand, the greater the air supply fan control demand value; the smaller the refrigeration amount demand, the smaller the air supply fan control demand value.

[0050] In some embodiments, the higher the air supply fan control demand value, the greater the refrigeration amount of the temperature control system and the greater the load inside the temperature control system, so the temperature control system should more easily enter the refrigeration mode with a greater refrigeration amount per unit time to perform refrigeration. Accordingly, the condition for the temperature control system to enter the refrigeration mode with a relatively small refrigeration amount per unit time should be more stringent, and this condition includes the cut-in temperature difference for switching into the refrigeration mode. Therefore, the cut-in temperature difference of the refrigeration mode of the temperature control system can be determined according to the air supply fan control demand value.

[0051] In some embodiments, the greater the load inside the temperature control system, the greater the refrigeration amount required to be output by the temperature control system according to the heat balance. The calculation method of the indoor side refrigeration amount is: refrigeration amount = (indoor side supply and return air) enthalpy difference x air volume ≈ (indoor side supply and return air) temperature difference x air volume (sensible heat ratio is close to 1). In actual operation, the indoor side supply and return air temperature difference is constant (i.e., operating according to the temperature difference set value), that is, the refrigeration amount is proportional to the air volume, and the air supply fan speed under the rated air supply fan speed corresponds to 100% refrigeration amount output of the unit (i.e., the temperature control system is under 100% load), and after the air conditioning refrigeration amount output is matched with the temperature control system load, different air supply fan outputs represent different loads of the temperature control system. Therefore, the load inside the machine room can be judged according to the air supply fan speed, and the air supply fan speed can be controlled through the air supply fan control demand CFF. According to this principle, the air supply fan control demand CFF is introduced, and a correlation relationship is established between the air supply fan control demand CFF and the indoor and outdoor temperature difference under different refrigeration modes, so as to adjust the switching point of the refrigeration mode in real time, that is, to adjust the cut-in temperature difference of each refrigeration mode.

[0052] In some embodiments, the refrigeration mode can include a compressor refrigeration mode, a fluorine pump refrigeration mode, and a mixed refrigeration mode. Among them, the compressor refrigeration mode refers to a mode in which only the compressor refrigeration subsystem is turned on for refrigeration; the fluorine pump refrigeration mode refers to a mode in which only the fluorine pump refrigeration subsystem is turned on for refrigeration; and the mixed refrigeration mode refers to a refrigeration mode in which the compressor refrigeration subsystem and the fluorine pump refrigeration subsystem are both turned on. In some embodiments, the compressor refrigeration mode can also be referred to as a DX (Direct Expansion, compressor refrigeration) compressor mode. In some embodiments, the fluorine pump mode can also be referred to as an FC fluorine pump mode. In some embodiments, the mixed mode can also be referred to as a MIX mixed mode.

[0053] Among them, the fluorine pump refrigeration mode and the mixed refrigeration mode, the compressor refrigeration mode can input more cold quantity to the indoor in unit time, that is, the compressor refrigeration mode can make the indoor temperature drop to the set temperature in a shorter time, and the cooling speed is the fastest.

[0054] Compared with the compressor refrigeration mode, the fluorine pump refrigeration mode can use natural cold source to deliver cold quantity (such as deliver cold air) to the indoor. That is, in the case that the outdoor temperature is lower than the indoor temperature, the cold air with lower temperature than the indoor temperature is used to output cold air to the indoor, so that the temperature control device can use natural cold source to deliver cold quantity to the indoor, and improve the energy efficiency of the temperature control system. Therefore, compared with the compressor refrigeration mode, in the case of using the fluorine pump refrigeration mode, the temperature control system outputs the same cold quantity to the indoor, and the energy (such as the consumed electric energy) required to be consumed is lower than that required to be consumed in the other two modes. From the energy consumption point of view, under the same conditions, if the indoor temperature is to be reduced to the set temperature, the energy consumption required by the fluorine pump refrigeration mode is lower than that required by the compressor refrigeration mode.

[0055] The mixed refrigeration mode is a mode between the compressor refrigeration mode and the fluorine pump refrigeration mode. Under the same conditions, the mixed refrigeration mode inputs less cold quantity to the indoor in unit time than the compressor refrigeration mode; but the mixed refrigeration mode inputs more cold quantity to the indoor in unit time than the fluorine pump refrigeration mode. Therefore, the cooling speed of the mixed refrigeration mode on the indoor temperature is also lower than that of the compressor refrigeration mode but higher than that of the mixed refrigeration mode. That is, the temperature control system load corresponding to the compressor refrigeration mode is greater than that corresponding to the mixed refrigeration mode; the refrigeration capacity corresponding to the compressor refrigeration mode is greater than that corresponding to the mixed refrigeration mode; the temperature control system load corresponding to the mixed refrigeration mode is greater than that corresponding to the fluorine pump refrigeration mode; the refrigeration capacity corresponding to the mixed refrigeration mode is greater than that corresponding to the fluorine pump refrigeration mode. In addition, under the same conditions, the energy efficiency of the mixed refrigeration mode is higher than that of the compressor refrigeration mode but lower than that of the mixed refrigeration mode; or in other words, under the same conditions, the energy consumption of the mixed refrigeration mode is lower than that of the compressor refrigeration mode but higher than that of the fluorine pump refrigeration mode.

[0056] In some embodiments, for the above-mentioned fluorine pump refrigeration mode and the mixed refrigeration mode, the greater the air supply fan control demand value, the greater the corresponding cut-in temperature difference of the fluorine pump refrigeration mode and the mixed refrigeration mode; the smaller the air supply fan control demand value, the smaller the corresponding cut-in temperature difference of the fluorine pump refrigeration mode and the mixed refrigeration mode. Since the cooling speed of the indoor temperature by the mixed refrigeration mode is higher than the cooling speed of the indoor temperature by the mixed refrigeration mode, the condition for the temperature control system to switch to the fluorine pump refrigeration mode should be more stringent than the condition for the temperature control system to switch to the mixed refrigeration mode. Therefore, under the same conditions, the corresponding cut-in temperature difference of the fluorine pump refrigeration mode should be greater than the corresponding cut-in temperature difference of the mixed refrigeration mode.

[0057] Step 230, in the case that the indoor-outdoor temperature difference is greater than the cut-in temperature difference, control the temperature control system to switch to the refrigeration mode operation.

[0058] In some embodiments, if the indoor-outdoor temperature difference of the temperature control system is greater than the cut-in temperature difference of a certain refrigeration mode, the temperature control system can be controlled to switch to the refrigeration mode operation, that is, to carry out refrigeration in the refrigeration mode.

[0059] In some embodiments, if the indoor-outdoor temperature difference is negative, indicating that the indoor temperature is lower than the outdoor temperature, the temperature control system can only operate according to the compressor refrigeration mode.

[0060] In some embodiments, in the case that the temperature control system is in the compressor refrigeration mode, if the indoor-outdoor temperature difference of the temperature control system does not meet the condition for switching to the fluorine pump refrigeration mode or the mixed refrigeration mode, for example, the indoor-outdoor temperature difference does not meet the corresponding cut-in temperature difference of the fluorine pump refrigeration mode or the mixed refrigeration mode, the temperature control system should continue to carry out refrigeration in the compressor refrigeration mode.

[0061] In some embodiments, in the case that the duration of the indoor-outdoor temperature difference being greater than the cut-in temperature difference reaches a first duration, control the temperature control system to switch to the refrigeration mode operation. In some embodiments, the first duration is greater than or equal to the above-mentioned interval duration, so that the refrigeration mode is not switched at consecutive sampling time points. In some embodiments, the first duration is equal to n interval durations, and n is a positive integer. That is, if the indoor-outdoor temperature difference is greater than the cut-in temperature difference at consecutive n+1 sampling time points, it can be considered that the duration of the indoor-outdoor temperature difference being greater than the cut-in temperature difference reaches the first duration, and the temperature control system can be controlled to switch to the corresponding refrigeration mode operation.

[0062] In some embodiments, the first duration can be 5 seconds, 10 seconds, etc. Of course, the first duration can also be other numerical values, and the specific value of the first duration can be set by relevant technical personnel according to actual conditions, and the embodiments of the present application do not make specific limitations thereto.

[0063] In this embodiment, if the indoor-outdoor temperature difference is greater than the cut-in temperature difference at some time and is less than or equal to the cut-in temperature difference at some time within the first time length, it indicates that the indoor-outdoor temperature difference or the cut-in temperature difference is not stable enough, and thus the refrigeration mode is not switched at will, thereby avoiding the case that the switching frequency of the refrigeration mode is too high, and ensuring the operation stability of the temperature control system.

[0064] To sum up, in the technical scheme provided by the embodiments of the present application, the cut-in temperature difference of the refrigeration mode of the temperature control system is dynamically adjusted according to the air supply fan control demand of the temperature control system, so that the cut-in temperature difference is adapted to the actual air supply fan control demand as much as possible, thereby improving the rationality of switching the refrigeration mode and further improving the refrigeration effect of the temperature control system.

[0065] In addition, by dynamically adjusting the cut-in temperature difference of the refrigeration mode of the temperature control system, the control of the temperature control system is also more intelligent.

[0066] In some possible implementation manners, as shown in Figure 3 The step 220 can further include at least one of the following steps (221-222): In step 221, the air supply fan control demand value of the temperature control system at the first sampling time is determined.

[0067] In some embodiments, the temperature control system can perform periodic sampling, and the parameter is sampled or determined once every interval time length. In some embodiments, the interval time length can be 1 second, 2 seconds, 3 seconds, 5 seconds, 10 seconds, 15 seconds, 20 seconds, 30 seconds, etc. Of course, the interval time length can also be other numerical values, and the specific value of the interval time length can be set by the relevant technical personnel according to the actual situation, and the embodiments of the present application do not make specific limitations on this. In this step 221, the air supply fan control demand value is calculated once every interval time length, and the air supply fan control demand value can be used to represent the refrigeration demand and the load demand of the temperature control system. According to the air supply fan control demand value at each sampling time, the cut-in temperature difference of each refrigeration mode at each sampling time can be determined.

[0068] In some embodiments, the step 221 can further include at least one of the following steps: 1. Obtain the deviation value of the supply-return air temperature difference detection value of the temperature control system at the first sampling time and the supply-return air temperature difference set value, and the supply-return air temperature difference detection value refers to the difference between the return air temperature detection value and the supply air temperature detection value of the temperature control system; 2. Determine the air supply fan control demand value of the temperature control system at the first sampling time based on the deviation value.

[0069] In some embodiments, the return-air temperature difference detection value refers to the actual difference between the return-air temperature and the supply-air temperature on the indoor side of the temperature control system, which can be obtained by subtracting the return-air temperature detection value from the supply-air temperature detection value. That is, the return-air temperature difference detection value is calculated based on the actual detection values. The return-air temperature refers to the temperature of the air drawn into the temperature control system from the indoor environment. The supply-air temperature refers to the temperature of the air blown into the indoor environment by the supply-air outlet of the temperature control system.

[0070] In some embodiments, the return-air temperature difference set value refers to the difference between the return-air temperature set value and the supply-air temperature set value of the temperature control system. The supply-air temperature set value is determined according to the target temperature set by the user for adjusting the indoor temperature of the temperature control system, and can be equal to the target temperature set by the user. For example, the user sets the target temperature for adjusting the indoor temperature of the temperature control system to 20 degrees Celsius through remote control or by operating the physical controls on the temperature control system, and the supply-air temperature set value of the temperature control system can be 20 degrees Celsius. The return-air temperature set value refers to the set value of the air temperature in the indoor environment, which does not change frequently. Since the return-air temperature set value and the supply-air temperature set value do not change frequently, the return-air temperature difference set value also does not change frequently.

[0071] In some embodiments, based on the deviation value between the return-air temperature difference detection value and the return-air temperature difference set value and the change of the deviation value, the demand for the load of the temperature control system in the current situation can be determined, and thus the supply-air fan control demand value can be determined. In this embodiment, the supply-air fan control demand value can be effectively calculated based on the deviation value between the return-air temperature difference detection value and the return-air temperature difference set value, thereby improving the compliance of the supply-air fan control demand value with the actual load demand, and further ensuring the accuracy of the cut-in temperature difference.

[0072] In some embodiments, based on the deviation value, the supply-air fan control demand value of the temperature control system at the first sampling time is determined, including at least one of the following steps: 2.1, obtaining a proportional coefficient, an integral coefficient, a differential coefficient, and a supply-air fan temperature difference control period; 2.2, for the first sampling time, performing a PID operation on the first sampling time based on the proportional coefficient, the integral coefficient, the differential coefficient, the supply-air fan temperature difference control period, the deviation value corresponding to the first sampling time, and the deviation values corresponding to at least one sampling time before the first sampling time, to obtain the supply-air fan control demand value of the first sampling time.

[0073] In some embodiments, the proportional coefficient, the integral coefficient, the differential coefficient, and the supply-air fan temperature difference control period are constant values, which can be set by a relevant technical person according to the actual situation, and the present application does not make specific limitations thereto.

[0074] In some embodiments, a supply fan control demand value is calculated, which can be specifically referred to as Formula One: Formula One:

[0075] wherein, PID calculation value at the kth sampling moment; the range of is [-100%, 100%]; deviation value of the supply and return air temperature detection value and the supply and return air temperature set value at the kth sampling moment; deviation value of the supply and return air temperature detection value and the supply and return air temperature set value at the (k-1)th sampling moment; proportional coefficient, which can also be referred to as a supply fan temperature difference control proportional coefficient; integral coefficient, which can also be referred to as a supply fan temperature difference control integral coefficient; derivative coefficient, which can also be referred to as a supply fan temperature difference control derivative coefficient; supply fan temperature difference control period, which can be in seconds.

[0076] In this embodiment, through PID operation, the supply fan control demand at the future (next sampling moment) can be predicted based on the change of the deviation value of the supply and return air temperature detection value and the supply and return air temperature set value at the current and previous sampling moments, so that the supply fan control demand is adapted to the actual situation as much as possible, thereby ensuring the accuracy of the cut-in temperature difference.

[0077] Step 222, determining the cut-in temperature difference corresponding to the first sampling moment based on the supply fan control demand value at the first sampling moment.

[0078] In some embodiments, the cut-in temperature difference and the supply fan control demand value are in a positive correlation. That is, within a certain range, the greater the supply fan control demand value, the greater the load of the temperature control system, and thus the greater the cut-in temperature difference should be; the smaller the supply fan control demand value, the smaller the load of the temperature control system, and thus the smaller the cut-in temperature difference should be.

[0079] In some embodiments, the cut-in temperature difference and the supply fan control demand value are in a linear relationship. Therefore, the relationship between the cut-in temperature difference and the supply fan control demand value can be represented by a linear function: cut-in temperature difference = A*supply fan control demand value + B, wherein A and B are positive numbers.

[0080] In this embodiment, by establishing a linear function relationship in positive correlation, i.e., a linear function relationship, the cut-in temperature difference that is in line with the actual situation can be directly calculated based on the supply fan control demand value, thereby ensuring the accuracy of the cut-in temperature difference.

[0081] In some embodiments, the cut-in temperature difference is a multiple function of the air supply fan control demand value, such as a quadratic function, a cubic function, etc. The function graph corresponding to the multiple function can include a curve, so that the calculated cut-in temperature difference can be more consistent with the actual demand, further ensuring the accuracy of the finally obtained cut-in temperature difference.

[0082] In this implementation, by establishing a function relationship between the cut-in temperature difference and the air supply fan control demand value, and calculating the cut-in temperature difference based on the air supply fan control demand value, the finally obtained cut-in temperature difference is as consistent as possible with the actual demand, thereby ensuring the refrigeration effect of the temperature control system as much as possible.

[0083] In some possible implementations, the temperature control system includes a condenser, and the indoor-outdoor temperature difference of the temperature control system is obtained by at least one of the following steps: 1. obtaining a return air temperature detection value of the temperature control system and an inlet air temperature detection value of the condenser; 2. determining the difference between the return air temperature detection value and the inlet air temperature detection value as the indoor-outdoor temperature difference.

[0084] In some embodiments, the return air temperature on the indoor side of the temperature control system is taken as the indoor air temperature, and the inlet air temperature of the condenser is taken as the outdoor air temperature, so that the difference between the return air temperature detection value and the inlet air temperature detection value can be taken as the indoor-outdoor temperature difference, thereby ensuring the accuracy of the indoor-outdoor temperature difference.

[0085] In some embodiments, the return air temperature detection value of the temperature control system and the inlet air temperature of the condenser are obtained by at least one of the following steps: 1.1, obtaining temperature detection values respectively collected by at least one first sensor of the temperature control system, the first sensor being a sensor for detecting the return air temperature detection value; 1.2, determining the average of the temperature detection values respectively collected by the at least one first sensor as the return air temperature detection value; 1.3, obtaining temperature detection values respectively collected by at least one second sensor of the temperature control system, the second sensor being a sensor for detecting the air temperature entering the condenser; 1.4, determining the average of the temperature detection values respectively collected by the at least one second sensor as the inlet air temperature detection value of the condenser.

[0086] In some embodiments, the at least one first sensor can be arranged at the return air inlet on the indoor side of the temperature control system, and the average of the temperature detection values collected by the at least one first sensor respectively is determined as the return air temperature detection value. For example, the average of the temperature detection values collected by the at least one first sensor respectively at the first sampling time is determined as the return air temperature detection value at the first sampling time. Similarly, the return air temperature detection values at other sampling times can be obtained. In this embodiment, if the number of first sensors is multiple, the detection method of taking the average of multiple measurements can minimize the error of the finally obtained return air temperature detection value, thereby minimizing the error of the finally obtained indoor-outdoor temperature difference.

[0087] In some embodiments, the at least one second sensor can be arranged at the head position of the condenser on the outdoor side of the temperature control system, i.e., the position where the outdoor air just enters the condenser, and the average of the temperature detection values collected by the at least one second sensor respectively is determined as the inlet air temperature detection value. For example, the average of the temperature detection values collected by the at least one second sensor respectively at the first sampling time is determined as the inlet air temperature detection value at the first sampling time. Similarly, the inlet air temperature detection values at other sampling times can be obtained. In this embodiment, if the number of second sensors is multiple, the detection method of taking the average of multiple measurements can minimize the error of the finally obtained inlet air temperature detection value, thereby minimizing the error of the finally obtained indoor-outdoor temperature difference.

[0088] In some possible implementations, the cooling mode includes a first cooling mode and a second cooling mode. In the case that the indoor-outdoor temperature difference is greater than the cut-in temperature difference, the temperature control system is controlled to switch to the cooling mode operation, including at least one of the following steps: 1. In the case that the indoor-outdoor temperature difference is greater than the cut-in temperature difference corresponding to the first cooling mode, the temperature control system is controlled to switch to the first cooling mode operation; 2. In the case that the indoor-outdoor temperature difference is less than the cut-in temperature difference corresponding to the first cooling mode and the indoor-outdoor temperature difference is greater than the cut-in temperature difference corresponding to the second cooling mode, the temperature control system is controlled to switch to the second cooling mode operation.

[0089] In some embodiments, the cooling mode of the temperature control system includes a first cooling mode and a second cooling mode, and the cut-in temperature difference corresponding to the first cooling mode is greater than the cut-in temperature difference corresponding to the second cooling mode. Through multiple cooling modes, the cooling control process of the temperature control system can be more detailed and more intelligent.

[0090] In some embodiments, the temperature control system includes a compressor refrigeration subsystem and a fluorine pump refrigeration subsystem. The first refrigeration mode is a refrigeration mode in which only the fluorine pump refrigeration subsystem is activated for refrigeration, and the second refrigeration mode is a refrigeration mode in which both the compressor refrigeration subsystem and the fluorine pump refrigeration subsystem are activated for refrigeration. In some embodiments, the first refrigeration mode can be the fluorine pump refrigeration mode described above, and the second refrigeration mode can be the hybrid mode described above. In some embodiments, the cut-in temperature difference corresponding to the first refrigeration mode can be referred to as the first switching temperature difference, and the cut-in temperature difference corresponding to the second refrigeration mode can be referred to as the second switching temperature difference.

[0091] In some embodiments, the condition for the temperature control system to switch to the fluorine pump cooling mode can be: ΔT = Tr - To ≥ ΔTfc, where ΔT is the indoor and outdoor entering temperature difference, Tr is the return air temperature detection value, To is the inlet air temperature detection value, and ΔTfc is the first cut-in temperature difference. In some embodiments, ΔTfc can also be referred to as the FC indoor and outdoor entering temperature difference.

[0092] In some embodiments, the condition for the temperature control system to switch to mixed cooling mode can be: ΔT = Tr - To ≥ ΔTmix, where ΔT is the indoor and outdoor entry temperature difference, Tr is the return air temperature detection value, To is the inlet air temperature detection value, and ΔTmix is ​​the second cut-in temperature difference. In some embodiments, ΔTmix can also be referred to as the MIX indoor and outdoor entry temperature difference. Here, ΔTfc is greater than Δtmix. In other words, the temperature conditions for the temperature control system to switch to fluorine pump cooling mode are higher and more stringent than those for mixed cooling mode.

[0093] In some embodiments, as Figure 4 As shown, the linear functional relationship between ΔTfc and the fan control demand CFF(k) can be expressed as: ΔTfc = A1 * CFF(k) + B1, where A1 and B1 are positive numbers. A1 is a linear coefficient: A1 = (FC indoor / outdoor entering temperature difference upper limit - FC indoor / outdoor entering temperature difference lower limit) / (FC indoor / outdoor entering temperature difference fan demand upper limit - FC indoor / outdoor entering temperature difference fan demand lower limit). B1 is a constant: B1 = FC indoor / outdoor entering temperature difference lower limit - FC indoor / outdoor entering temperature difference fan demand lower limit * A1. The FC indoor / outdoor entering temperature difference must be within the range of the FC indoor / outdoor entering temperature difference lower limit and the FC indoor / outdoor entering temperature difference upper limit. Any temperature outside this range is treated as a boundary condition.

[0094] In some embodiments, as Figure 5As shown, the linear function relationship between ΔTmix and the control requirement CFF(k) of the air supply fan can be expressed as: ΔTmix=A2*CFF(k)+B2, wherein A2 and B2 are positive numbers. A2 is a first order coefficient, A2=(MIX indoor-outdoor entering temperature upper boundary-MIX indoor-outdoor entering temperature lower boundary) / (MIX indoor-outdoor entering temperature air supply fan requirement upper limit-MIX indoor-outdoor entering temperature air supply fan requirement lower limit); B2 is a constant, B2=MIX indoor-outdoor entering temperature lower boundary-MIX indoor-outdoor entering temperature air supply fan requirement lower limit*A2; wherein the MIX indoor-outdoor entering temperature is within the range of MIX indoor-outdoor entering temperature lower boundary and MIX indoor-outdoor entering temperature upper boundary, and is processed according to the boundary when exceeding the range.

[0095] In some embodiments, as shown, the first refrigeration mode can be the fluorine pump refrigeration mode introduced above, and the second refrigeration mode can be the mixed mode introduced above. The method can include the following steps (601-608): Figure 6 As shown, the first refrigeration mode can be the fluorine pump refrigeration mode introduced above, and the second refrigeration mode can be the mixed mode introduced above. The method can include the following steps (601-608): Step 601: Collecting indoor return air temperature Tr and condenser inlet air temperature To; Step 602: Calculating indoor-outdoor temperature difference ΔT, first switching temperature difference ΔTfc, and second switching temperature difference ΔTmix; Step 603: Determining whether ΔT is greater than ΔTfc. If yes, execute step 604; if no, execute step 605; Step 604: Switching to the fluorine pump refrigeration mode, and then executing step 608; Step 605: Determining whether ΔT is greater than ΔTmix. If yes, execute step 606; if no, execute step 607; Step 606: Switching to the mixed refrigeration mode, and then executing step 608; Step 607: Maintaining the current refrigeration mode, and then executing step 608; Step 608: Continuously determining other mode exit conditions or mode entry conditions.

[0096] In some embodiments, the refrigeration demand prediction method can also associate the control of refrigeration mode switching with the following parameter values, for example: (1) Refrigerant side enthalpy difference method (refrigerant flow rate*enthalpy difference): measuring the refrigerant inlet and outlet pressures and temperatures of the temperature control system, calculating the enthalpy difference; calculating the refrigerant flow rate through the compressor / fluorine pump speed and head.

[0097] The calculation formula of the compressor refrigeration capacity y can be: wherein Te and Tc are the rare and saturated temperature (evaporation temperature) and the exhaust saturated temperature (condensation temperature) respectively, y is the compressor refrigeration capacity, and c1-c10 are fitting coefficients.

[0098] (2) Wind enthalpy difference method (wind volume enthalpy difference): measure the temperature and humidity of the supply / return air outlet of the temperature control system, calculate the enthalpy difference; calculate the air volume through the fan speed and pressure difference.

[0099] Wherein, the pressure difference of the pressure port Wherein, k is a coefficient, k is related to the size of the air guide ring; is the pressure difference before and after the air guide ring; is the enthalpy difference of the supply and return air.

[0100] The following is an embodiment of the device of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0101] Please refer to Figure 7 , which shows a block diagram of a mode control device provided by an embodiment of the present application. The device has the functions of implementing the above-mentioned method examples of mode control, which can be realized by hardware or corresponding software executed by hardware. The device can be the temperature control equipment introduced above, or can be arranged on the temperature control equipment. The device 700 can include a temperature difference acquisition module 710, a temperature difference determination module 720, and a mode control module 730.

[0102] The temperature difference acquisition module 710 is configured to acquire the indoor-outdoor temperature difference of the temperature control system.

[0103] The temperature difference determination module 720 is configured to determine the cut-in temperature difference of the refrigeration mode of the temperature control system according to the supply fan control demand value of the temperature control system.

[0104] The mode control module 730 is configured to control the temperature control system to switch to the refrigeration mode operation in the case that the indoor-outdoor temperature difference is greater than the cut-in temperature difference.

[0105] In some embodiments, the temperature difference determination module 720 includes a demand determination sub-module and a temperature difference determination sub-module.

[0106] The demand determination sub-module is configured to determine the supply fan control demand value of the temperature control system at a first sampling time.

[0107] The temperature difference determination sub-module is configured to determine the cut-in temperature difference corresponding to the first sampling time based on the supply fan control demand value at the first sampling time.

[0108] Wherein, the cut-in temperature difference and the supply fan control demand value have a positive correlation.

[0109] In some embodiments, the demand determination sub-module includes a difference determination unit and a demand determination unit.

[0110] The difference determination unit is configured to obtain a deviation value of a return-air temperature detection value and a supply-air temperature detection value of the temperature control system at the first sampling time, where the deviation value is a difference between the return-air temperature detection value and the supply-air temperature detection value of the temperature control system.

[0111] The demand determination unit is configured to determine a supply fan control demand value of the temperature control device at the first sampling time based on the deviation value.

[0112] In some embodiments, the demand determination unit is configured to: obtain a proportional coefficient, an integral coefficient, a differential coefficient, and a supply fan temperature difference control period; perform a PID (Proportion Integral Differential) operation on the first sampling time based on the proportional coefficient, the integral coefficient, the differential coefficient, the supply fan temperature difference control period, the deviation value corresponding to the first sampling time, and deviation values corresponding to at least one sampling time before the first sampling time, to obtain a supply fan control demand value of the first sampling time.

[0113] In some embodiments, the cut-in temperature difference and the supply fan control demand value are in a linear relationship. Alternatively, the cut-in temperature difference and the supply fan control demand value are in a multiple function relationship.

[0114] In some embodiments, the mode control module 730 is configured to control the temperature control device to switch to the cooling mode operation when the duration in which the indoor-outdoor temperature difference is greater than the cut-in temperature difference reaches a first duration.

[0115] In some embodiments, the temperature control device includes a condenser, and the temperature difference acquisition module 710 includes a temperature acquisition submodule and a temperature difference determination submodule.

[0116] The temperature acquisition submodule is configured to obtain a return-air temperature detection value of the temperature control device and an inlet-air temperature detection value of the condenser.

[0117] The temperature difference determination submodule is configured to determine a difference between the return-air temperature detection value and the inlet-air temperature detection value as the indoor-outdoor temperature difference.

[0118] In some embodiments, the temperature acquisition submodule is configured to: obtain temperature detection values respectively collected by at least one first sensor of the temperature control device, where the first sensor is a sensor for collecting a return-air temperature detection value of an indoor side; The average of the temperature detection values collected by the at least one first sensor is determined as the return air temperature detection value; Obtaining temperature detection values collected by at least one second sensor of the temperature control device, the second sensor being a sensor for detecting the temperature of air entering the condenser; The average of the temperature detection values collected by the at least one second sensor is determined as the return air temperature detection value;

[0119] In some embodiments, the refrigeration mode includes a first refrigeration mode and a second refrigeration mode; the mode control module 730 is configured to: In the case where the indoor-outdoor temperature difference is greater than the cut-in temperature difference corresponding to the first refrigeration mode, the temperature control device is controlled to switch to the first refrigeration mode for operation; In the case where the indoor-outdoor temperature difference is less than the cut-in temperature difference corresponding to the first refrigeration mode and the indoor-outdoor temperature difference is greater than the cut-in temperature difference corresponding to the second refrigeration mode, the temperature control device is controlled to switch to the second refrigeration mode for operation.

[0120] In some embodiments, the temperature control device includes a compressor refrigeration subsystem and a fluorine pump refrigeration subsystem, the first refrigeration mode is a refrigeration mode in which only the fluorine pump refrigeration subsystem is turned on for refrigeration, and the second refrigeration mode is a refrigeration mode in which the compressor refrigeration subsystem and the fluorine pump refrigeration subsystem are used simultaneously for refrigeration.

[0121] In summary, in the technical scheme provided by the embodiments of the present application, the cut-in temperature difference of the refrigeration mode of the temperature control device is dynamically adjusted by controlling the demand of the air supply fan of the temperature control device, so that the cut-in temperature difference is as compatible as possible with the actual demand of the air supply fan control, thereby improving the rationality of switching the refrigeration mode and further improving the refrigeration effect of the temperature control device.

[0122] It should be noted that the device provided in the above embodiments is only used as an example to illustrate the division of the above functional modules in realizing its functions. In actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the device and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is described in detail in the method embodiments, which will not be repeated here.

[0123] The embodiments of the present application also provide a temperature control device, which can be the temperature control device described above. The temperature control device comprises a processor and a memory, and the memory stores a computer program; the processor is configured to execute the computer program in the memory to implement the mode control method provided by each method embodiment.

[0124] By way of example, Figure 8 is a structural block diagram of a temperature control device provided by an example embodiment of the present application.

[0125] Generally, the temperature control device 800 includes a processor 801 and a memory 802.

[0126] The processor 801 can include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 801 can be implemented in at least one of a hardware form of a Digital Signal Processing (DSP), a Field-Programmable Gate Array (FPGA), a Programmable Logic Array (PLA). The processor 801 can also include a main processor and a coprocessor, the main processor being a processor for processing data in an awake state, also known as a Central Processing Unit (CPU), and the coprocessor being a low-power processor for processing data in a standby state. In some embodiments, the processor 801 can be integrated with a Graphics Processing Unit (GPU), the GPU being responsible for rendering and drawing the content required to be displayed by the display screen. In some embodiments, the processor 801 can further include an Artificial Intelligence (AI) processor, the AI processor being used to process computing operations related to machine learning.

[0127] The memory 802 can include one or more computer-readable storage media, which can be non-transitory. The memory 802 can also include a high-speed random access memory, and a non-volatile memory such as one or more disk storage devices, flash storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 802 is used to store at least one instruction for being executed by the processor 801 to implement the mode control method provided by the method embodiment of the present application.

[0128] In some embodiments, the temperature control device 800 can further optionally include an input interface 803 and an output interface 804. The processor 801, the memory 802, and the input interface 803 and the output interface 804 can be connected through a bus or a signal line. Each peripheral device can be connected to the input interface 803 and the output interface 804 through a bus, a signal line, or a circuit board. The input interface 803 and the output interface 804 can be used to connect at least one peripheral device related to input / output (I / O) to the processor 801 and the memory 802. In some embodiments, the processor 801, the memory 802, and the input interface 803 and the output interface 804 are integrated on the same chip or circuit board; in some other embodiments, any one or both of the processor 801, the memory 802, and the input interface 803 and the output interface 804 can be implemented on a separate chip or circuit board, and the embodiments of the present application do not limit this.

[0129] Those skilled in the art can understand that the above-mentioned structures do not constitute a limitation on the temperature control device 800, and can include more or fewer components than those shown, or combine certain components, or use different component arrangements.

[0130] In an exemplary embodiment, a chip is also provided, which includes programmable logic circuitry and / or a computer program, and when the chip is running, is used to implement the above-mentioned mode control method.

[0131] In an exemplary embodiment, a computer readable storage medium is also provided, which stores a computer program, and when the computer program is executed by a processor, is used to implement the above-mentioned mode control method.

[0132] Optionally, the computer readable storage medium can include a ROM (Read-Only Memory), a RAM (Random-Access Memory), a SSD (Solid State Drives), or an optical disc, etc. Among them, the random access memory can include a ReRAM (Resistance Random Access Memory) and a DRAM (Dynamic Random Access Memory).

[0133] In an exemplary embodiment, a computer program product is also provided, which includes a computer program stored in a computer readable storage medium. A processor of a computer device reads the computer program from the computer readable storage medium, and the processor executes the computer program, so that the computer device executes the above-mentioned mode control method.

[0134] It should be understood that the "multiple" mentioned herein refers to two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0135] The above only describes exemplary embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mode control method characterized by, The method comprises: obtaining the indoor-outdoor temperature difference of the temperature control system; determining the cut-in temperature difference of the refrigeration mode of the temperature control system according to the air supply fan control demand value of the temperature control system; in the case that the indoor-outdoor temperature difference is greater than the cut-in temperature difference, controlling the temperature control system to switch to the refrigeration mode operation.

2. The method of claim 1, wherein, The determination of the cut-in temperature difference of the refrigeration mode of the temperature control system according to the air supply fan control demand value of the temperature control system comprises: determining the air supply fan control demand value of the temperature control system at a first sampling time; determining the cut-in temperature difference corresponding to the first sampling time based on the air supply fan control demand value of the first sampling time; wherein the cut-in temperature difference and the air supply fan control demand value are in a positive correlation.

3. The method of claim 2, wherein, The determination of the air supply fan control demand value of the temperature control system at the first sampling time comprises: obtaining the deviation value of the return air supply temperature difference detection value and the return air supply temperature difference set value of the temperature control system at the first sampling time, wherein the return air supply temperature difference detection value refers to the difference between the return air temperature detection value and the supply air temperature detection value of the temperature control system; determining the air supply fan control demand value of the temperature control system at the first sampling time based on the deviation value.

4. The method of claim 3, wherein, The determination of the air supply fan control demand value of the temperature control system at the first sampling time based on the deviation value comprises: obtaining a proportional coefficient, an integral coefficient, a differential coefficient, and an air supply fan temperature difference control period; for the first sampling time, performing PID operation on the first sampling time based on the proportional coefficient, the integral coefficient, the differential coefficient, the air supply fan temperature difference control period, the deviation value of the first sampling time, and the deviation values corresponding to at least one sampling time before the first sampling time, to obtain the air supply fan control demand value of the first sampling time.

5. The method of claim 2, wherein: the cut-in temperature difference and the air supply fan control demand value are in a linear relationship; or the cut-in temperature difference and the air supply fan control demand value are in a multiple function relationship. In the case that the indoor-outdoor temperature difference is greater than the cut-in temperature difference, the temperature control system is controlled to switch to the refrigeration mode operation.

6. The method according to any one of claims 1 to 5, characterized in that, In the case that the duration of the indoor-outdoor temperature difference being greater than the cut-in temperature difference reaches a first duration, the temperature control system is controlled to switch to the refrigeration mode operation. The temperature control system comprises a condenser, and the obtaining of the indoor-outdoor temperature difference of the temperature control system comprises:

7. The method according to any one of claims 1 to 5, characterized in that, obtaining the return air temperature detection value of the temperature control system and the inlet air temperature detection value of the condenser; determining the difference between the return air temperature detection value and the inlet air temperature detection value as the indoor-outdoor temperature difference. The obtaining of the return air temperature detection value of the temperature control system and the inlet air temperature of the condenser comprises:

8. The method of claim 7, wherein, obtaining temperature detection values collected by at least one first sensor of the temperature control system, wherein the first sensor is a sensor for collecting the return air temperature detection value on the indoor side; determining the average of the temperature detection values collected by the at least one first sensor as the return air temperature detection value; ​ obtain temperature detection values collected by at least one second sensor of the temperature control system respectively, the second sensor being a sensor for detecting air temperature entering the condenser; determine a mean value of the temperature detection values collected by the at least one second sensor respectively as an air inlet temperature detection value of the condenser.

9. The method according to any one of claims 1 to 5, characterized in that, The refrigeration mode includes a first refrigeration mode and a second refrigeration mode. The control of the temperature control system to switch to the refrigeration mode in the case where the indoor-outdoor temperature difference is greater than the cut-in temperature difference includes: In the case where the indoor-outdoor temperature difference is greater than the cut-in temperature difference corresponding to the first refrigeration mode, the temperature control system is controlled to switch to the first refrigeration mode. In the case where the indoor-outdoor temperature difference is less than the cut-in temperature difference corresponding to the first refrigeration mode and the indoor-outdoor temperature difference is greater than the cut-in temperature difference corresponding to the second refrigeration mode, the temperature control system is controlled to switch to the second refrigeration mode.

10. The method of claim 9, wherein, The temperature control system includes a compressor refrigeration subsystem and a fluorine pump refrigeration subsystem, the first refrigeration mode is a refrigeration mode in which only the fluorine pump refrigeration subsystem is turned on to perform refrigeration, and the second refrigeration mode is a refrigeration mode in which the compressor refrigeration subsystem and the fluorine pump refrigeration subsystem are used simultaneously to perform refrigeration.

11. A mode control device, characterized by comprising: The device includes: a temperature difference acquisition module configured to acquire an indoor-outdoor temperature difference of a temperature control system; a temperature difference determination module configured to determine a cut-in temperature difference of a refrigeration mode of the temperature control system according to a supply air fan control requirement value of the temperature control system; a mode control module configured to control the temperature control system to switch to the refrigeration mode in the case where the indoor-outdoor temperature difference is greater than the cut-in temperature difference.

12. A temperature control device, characterized by The computer device includes a processor and a memory, the memory stores a computer program, the computer program is loaded and executed by the processor to implement the method of any one of claims 1 to 10.

13. A chip, characterized by The chip includes a programmable logic circuit and / or a computer program, when the chip is running, is used to implement the method of any one of claims 1 to 10.

14. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, the computer program is loaded and executed by the processor to implement the method of any one of claims 1 to 10.

15. A computer program product, characterised in that, The computer program product includes a computer program, the computer program is stored in a computer readable storage medium, and the processor reads and executes the computer program from the computer readable storage medium to implement the method of any one of claims 1 to 10.

Images