A heat exchange system adjustment method, device and equipment

Abstract

The present application provides a method, device and equipment for regulating a heat exchange system, which is applied to the technical field of heat exchange systems. The heat exchange system may include a system loop and at least two heat exchange loops connected to the system loop, and the at least two heat exchange loops are arranged in parallel. The method includes: determining the first opening of the first throttling device in the main heat exchange loop based on the actual temperature detected by the system loop and the feedback regulation method. Based on the first opening, respectively determine the second opening and the opening limit interval of the second throttling device in the heat exchange branch loop. Feedback limit regulation is performed on the second opening through the opening limit interval to obtain the target opening of the heat exchange branch loop. The first throttling device is controlled according to the first opening, and the second throttling device is controlled according to the target opening. The opening of the throttling device of multiple branch loops in the heat exchange system can be accurately adjusted, and no other sensors need to be added during the adjustment process, which can reduce the number of components and reduce costs.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange systems, and in particular to a method, device and equipment for regulating a heat exchange system. Background Art

[0002] At present, the electronic expansion valve opening control method is mainly through PID control. There are three mainstream methods: one is through superheat control, which controls the flow through the heat exchanger through appropriate superheat to optimize the performance and energy efficiency of the heat exchanger. The other is through subcooling control. This method is generally used in the gas-liquid separator system, because the gas-liquid separator system cannot control the superheat and the gas-liquid separator has the function of autonomously adjusting the flow. The electronic expansion valve needs to cooperate with the gas-liquid separator system in this system to achieve the appropriate flow. By controlling the subcooling, the pressure difference before and after the electronic expansion valve can be changed to achieve the control flow. The third method is through the compressor exhaust superheat control. The compressor model can be used to infer the heat exchanger outlet superheat from the compressor exhaust superheat, thereby achieving the control of the appropriate opening.

[0003] For the gas-liquid separator heat pump system, the electronic expansion valve generally uses the second method or a combination of the second and third methods to control the opening. When the gas-liquid separator heat pump system becomes complicated, for example, when there are two or three branch circuits working in parallel, the main circuit electronic expansion valve can continue to be controlled according to the above method, but the other branch circuits also need to control the appropriate flow rate to meet the flow requirements of each branch circuit. At present, it is mainly achieved by adding additional sensors to each branch circuit, and then using the first method to control the flow of other branch circuits through superheat. When the operating conditions are more complicated, each branch circuit may become the main circuit. At this time, more sensors are required to achieve the throttling requirements, otherwise the flow requirements of each branch circuit cannot be met. This process requires compensation from other sensors, resulting in increased system costs.

[0004] Therefore, there is an urgent need for a heat exchange system adjustment method for accurately adjusting the opening of the electronic expansion valves of multiple branch circuits in the gas-liquid separator heat pump system. At the same time, no other sensors need to be added during the adjustment process, which can reduce the number of parts and reduce costs. Summary of the invention

[0005] The purpose of the present application is to provide a method, device and equipment for regulating a heat exchange system, so as to accurately adjust the opening of the electronic expansion valves of multiple branch circuits in a gas-liquid separator heat pump system. At the same time, no other sensors need to be added during the adjustment process, which can reduce the number of parts and reduce costs.

[0006] In a first aspect, an embodiment of the present application provides a method for regulating a heat exchange system, wherein the heat exchange system may include a system circuit and at least two heat exchange circuits connected to the system circuit, wherein the at least two heat exchange circuits are arranged in parallel, and the method includes: determining a first opening of a first throttling device in a main heat exchange circuit based on an actual temperature, an actual pressure and a feedback regulation method detected by the system circuit. The main heat exchange circuit is a target regulation circuit among the at least two heat exchange circuits. Based on the first opening, the second opening and the opening limit interval of the second throttling device in the heat exchange branch circuit are respectively determined. The second opening is feedback-limited and regulated through the opening limit interval to obtain a target opening of the heat exchange branch circuit. The first throttling device is controlled according to the first opening, and the second throttling device is controlled according to the target opening.

[0007] The heat exchange system adjustment method provided in the embodiment of the present application determines the opening of the throttling device based on the actual temperature detected by the heat exchange system loop and the feedback adjustment method, which can achieve accurate control of the operating state of the heat exchange system. By setting the opening limit interval and performing feedback limit adjustment on the second opening, it is possible to avoid system instability caused by excessive opening changes and improve the overall stability of the system. Only the heat exchange main loop sensor feedback and other existing sensors in the heat exchange system are required to complete the control of the opening of each throttling device, and no additional sensors are required, which can reduce the number of components and reduce costs.

[0008] A possible implementation method is to determine the second opening and the opening limit interval of the second throttling device in the heat exchange branch circuit based on the first opening, including: determining the second opening of the heat exchange branch circuit based on the first opening, the target heat exchange amount of the heat exchange main circuit, and the target heat exchange amount of the heat exchange branch circuit. Determine the opening limit interval of the heat exchange branch circuit based on the first opening, the actual performance coefficient of the heat exchange main circuit, and the actual performance coefficient of the heat exchange branch circuit.

[0009] A possible implementation method is to determine the second opening of the heat exchange branch circuit based on the first opening, the target heat exchange amount of the heat exchange main circuit, and the target heat exchange amount of the heat exchange branch circuit, including: determining the ratio of the target heat exchange amount of the heat exchange main circuit to the target heat exchange amount of the heat exchange branch circuit. Using the ratio and the first opening, determine the second opening of the second throttling device.

[0010] In a possible implementation, the heat exchange system adjustment method provided in the embodiment of the present application further includes: using a compensation coefficient between the heat exchange main circuit and the heat exchange branch circuit to correct the second opening, and determining the corrected second opening as the second opening of the heat exchange branch circuit. The compensation coefficient is determined based on the evaporation enthalpy difference of the working fluid in the heat exchange main circuit and the evaporation enthalpy difference of the working fluid in the heat exchange branch circuit.

[0011] In a possible implementation, the actual performance coefficient of the main heat exchange loop includes one or more of the following: the resistance coefficient of the first throttling device, the relative coefficient between the actual opening of the first throttling device and the ideal opening of the first throttling device, and the relative coefficient between the actual flow of the first throttling device and the opening of the first throttling device. The actual performance coefficient of the branch heat exchange loop includes one or more of the following: the resistance coefficient of the second throttling device, the relative coefficient between the actual opening of the second throttling device and the ideal opening of the second throttling device, and the relative coefficient between the actual flow of the second throttling device and the opening of the second throttling device.

[0012] A possible implementation method is to perform feedback limiting adjustment on the second opening through the opening limit interval to obtain the target opening of the heat exchange branch circuit, including: when the second opening belongs to the opening limit interval, determining the second opening as the target opening. Or, when the second opening is greater than the upper limit opening of the opening limit interval, determining the upper limit opening as the target opening. Or, when the second opening is less than the lower limit opening of the opening limit interval, determining the lower limit opening as the target opening.

[0013] A possible implementation method is to determine the first opening of the first throttling device in the main heat exchange loop based on the actual temperature, actual pressure and feedback adjustment method detected by the system loop, including: determining the actual subcooling degree and the corresponding target subcooling degree of the main heat exchange loop based on the saturation temperature and actual temperature of the actual pressure of the main heat exchange loop. The first opening of the first throttling device is adjusted using the actual subcooling degree and the target subcooling degree. The first opening is the opening when the actual subcooling degree is equal to the target subcooling degree.

[0014] In a second aspect, an embodiment of the present application provides a regulating device for a heat exchange system, wherein the heat exchange system includes a system loop and at least two heat exchange loops connected to the system loop, and the at least two heat exchange loops are arranged in parallel. The device includes: a processing module and a control module.

[0015] The processing module is used to determine the first opening of the first throttling device in the main heat exchange loop based on the actual temperature detected by the system loop and the feedback adjustment method. The main heat exchange loop is the target adjustment loop in at least two heat exchange loops. Based on the first opening, the second opening and the opening limit interval of the second throttling device in the heat exchange branch loop are determined respectively.

[0016] The control module is used to perform feedback limiting adjustment on the second opening through the opening limiting interval to obtain the target opening of the heat exchange branch circuit, control the first throttling device according to the first opening, and control the second throttling device according to the target opening.

[0017] In a third aspect, an embodiment of the present application provides a heat exchange system regulating device, which has the function of implementing the heat exchange system regulating method of the first aspect or any possible implementation method. The function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0018] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores instructions. When the computer-readable storage medium is run on a computer, the computer can execute the method for regulating a heat exchange system according to the first aspect or any possible implementation method.

[0019] In a fifth aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method for regulating a heat exchange system according to the first aspect or any possible implementation method.

[0020] Among them, the technical effects brought about by any design method in the second to fifth aspects can refer to the technical effects brought about by different possible implementation methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a heat exchange system provided in an embodiment of the present application;

[0023] Figure 2 A schematic flow chart of a method for regulating a heat exchange system provided in an embodiment of the present application;

[0024] Figure 3 Another schematic flow chart of a method for regulating a heat exchange system provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of a regulating device for a heat exchange system provided in an embodiment of the present application;

[0026] Figure 5 A structural schematic diagram of a regulating system of a heat exchange system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0029] Heat exchange systems, such as heat pump air conditioners, belong to the reverse Carnot cycle process. A necessary part of the process is the throttling process, which requires the working fluid in the system to flow through the throttling device. In this process, the physical properties of the working fluid change, generally from liquid phase to gas-liquid two-phase, and the working fluid pressure decreases, the volume expands, and the flow rate increases.

[0030] Among them, the throttling device can be selected from a capillary tube, a thermal expansion valve, an electronic expansion valve, etc. The capillary tube is a throttling tube with a small diameter and a long and thin diameter. The thermal expansion valve controls the opening of the expansion valve by the superheat of the gaseous refrigerant at the outlet of the evaporator, which is specifically realized by a mechanical structure. The electronic expansion valve uses the electrical signal generated by the adjusted parameter to control the voltage or current applied to the expansion valve, thereby achieving the purpose of adjusting the liquid supply. Among the three different throttling devices, the electronic expansion valve has active adjustability, and the controller can select the size of the opening to control it according to the feedback provided by the sensor. The capillary tube and the thermal expansion valve are respectively a physical structure and an adjustable mechanical structure, and do not have active adjustability.

[0031] At present, when the throttling device is an electronic expansion valve, the adjustment method for the throttling device in the heat exchange system is mainly adjusted through PID. However, during this adjustment process, when there are multiple heat exchange loops in the heat exchange system, it is necessary to add additional sensors to each heat exchange loop, and then control the flow through the heat exchanger by superheat to meet the loop requirements of each heat exchange loop. When the operating conditions are more complex, each branch may become the main loop, and more sensors are required to achieve the throttling requirements. Otherwise, the flow requirements of each branch cannot be met, and other sensors are required to compensate, resulting in increased system costs.

[0032] Based on this, an embodiment of the present application provides a method for regulating a heat exchange system, the heat exchange system comprising a system loop and two heat exchange loops connected to the system loop, at least two heat exchange loops being arranged in parallel. The method comprises: determining a first opening of a first throttling device in a main heat exchange loop based on an actual temperature detected by the system loop and a feedback regulation method. The main heat exchange loop is a target regulation loop in at least two heat exchange loops. Based on the first opening, the second opening and the opening limit interval of a second throttling device in a branch heat exchange loop are respectively determined. Feedback restriction regulation is performed on the second opening through the opening limit interval to obtain a target opening of the branch heat exchange loop. The first throttling device is controlled according to the first opening, and the second throttling device is controlled according to the target opening. The process can achieve precise control of the operating state of the heat exchange system by determining the opening of the throttling device based on the actual temperature detected by the heat exchange system loop and the feedback regulation method. By setting the opening limit interval and performing feedback restriction regulation on the second opening, it is possible to avoid system instability caused by excessive opening changes and improve the overall stability of the system. Only the feedback from the heat exchange main circuit sensor and other existing sensors in the heat exchange system are needed to complete the control of the opening of each throttling device. No additional sensors are needed, which can reduce the number of parts and reduce costs.

[0033] On the one hand, the heat exchange system adjustment method provided in the embodiment of the present application can be performed by the heat exchange system. Figure 1 As shown, the heat exchange system 100 may include: a system loop 101 and at least two heat exchange loops 102 .

[0034] The system loop 101 may include: a compressor 1011 , a gas-liquid separator 1012 , a condenser 1013 , a pre-valve temperature sensor 1014 , and a pressure sensor 1015 .

[0035] The compressor 1011 is used to absorb low-temperature and low-pressure liquid working medium based on the reverse Carnot cycle and compress it into high-temperature and high-pressure gaseous working medium, and transmit the high-temperature and high-pressure gaseous working medium to the condenser 1013 through the system loop 101.

[0036] The gas-liquid separator 1012 is used to separate the gaseous working medium and the liquid working medium in the system loop 101, ensuring that only the gaseous working medium is transmitted to the compressor 1011 through the system loop 101, thereby protecting the compressor 1011 from damage.

[0037] The condenser 1013 is used to condense the high-temperature and high-pressure gaseous working fluid transmitted by the compressor 1011 into a liquid working fluid, and transfer the heat carried in the working fluid to the external environment outside the vehicle to reduce the internal environment temperature of the vehicle.

[0038] The pre-valve temperature sensor 1014 is used to detect the actual temperature of the system loop.

[0039] The pressure sensor 1015 is used to detect the outlet pressure value of the compressor 1011.

[0040] The heat exchange circuit 102 may include: a heat exchanger 1021 , a throttling device 1022 , and a heat exchanger sensor 1023 .

[0041] The heat exchanger 1021 is used to evaporate the liquid working medium transmitted by the condenser 1013 into a gaseous working medium, and absorb heat from the internal environment of the vehicle to reduce the internal environment temperature of the vehicle. Exemplarily, the heat exchanger 1021 may include a front evaporator, a rear evaporator, a battery cooler, etc. The front evaporator may be deployed at the front of the vehicle, the rear evaporator may be deployed at the rear of the vehicle, and the battery cooler may be used to cool the battery of the vehicle.

[0042] The throttling device 1022 is used to accurately control the flow rate of the working medium by adjusting the opening. For example, the throttling device 1022 can be an electronic expansion valve or the like.

[0043] The heat exchanger sensor 1023 is used to detect the actual temperature of the working fluid in the heat exchange circuit after passing through the heat exchanger.

[0044] It should be noted that the number of the heat exchange circuits 102 may be at least two, and the present application does not limit the specific number of the heat exchange circuits 102 .

[0045] On the one hand, the embodiment of the present application provides a heat exchange system adjustment method, which can be Figure 1 The heat exchange system shown is implemented. Figure 2 As shown, the method may include:

[0046] S201, determining a first opening degree of a first throttling device in a main heat exchange loop based on actual temperature, actual pressure and feedback regulation mode detected by a system loop.

[0047] Among them, the main heat exchange loop is the target regulating loop in at least two heat exchange loops.

[0048] A possible implementation method is to determine the target subcooling degree of the heat exchange main circuit based on the saturation temperature of the actual pressure and the actual temperature of the heat exchanger of the heat exchange main circuit. The first opening degree of the first throttling device is adjusted by using the actual subcooling degree and the corresponding target subcooling degree. The target subcooling degree is a manually defined target value. The first opening degree is the opening degree when the actual subcooling degree is equal to the target subcooling degree.

[0049] For example, Figure 3As shown, the heat exchange system determines the main heat exchange loop in the heat exchange system in response to the user's adjustment instruction. The adjustment instruction includes the main heat exchange loop and the target temperature. The main heat exchange loop is a heat exchange loop calculated according to the position of the vehicle interior that needs to be adjusted according to the user's selection. The opening of the first throttling device is adjusted by calculating the difference between the actual subcooling degree and the target subcooling degree.

[0050] This process determines the opening of the throttling device based on the actual temperature, actual pressure and feedback adjustment method detected by the heat exchange system loop, so as to achieve precise control of the operating state of the heat exchange system.

[0051] S202: Based on the first opening, respectively determine the second opening and the opening limit interval of the second throttling device in the heat exchange branch circuit.

[0052] A possible implementation manner is to determine the second opening degree of the heat exchange branch circuit based on the first opening degree, the target heat exchange capacity of the main heat exchange circuit, and the target heat exchange capacity of the heat exchange branch circuit.

[0053] For example, Figure 3 As shown, first determine the target heat exchange amount of the main heat exchange loop and the target heat exchange amount of the sub-heat exchange loop. The heat exchange amount determination process may include the following three situations.

[0054] 1. Specific heat method: When the heat exchanger in the circuit where the throttling device is located is a battery cooler, the heat exchange capacity of the circuit where the battery cooler is located = (heating water pump outlet temperature - actual battery inlet temperature) * battery water flow demand * unit conversion coefficient. The unit heat exchange coefficient is determined based on (battery inlet water temperature + heating water pump outlet water temperature) / 2.

[0055] 2. Thermal resistance method: The heat exchange capacity of the battery cooler circuit = (low-pressure saturation temperature - actual motor inlet water temperature) * thermal resistance. The thermal resistance is determined according to the motor water flow demand.

[0056] 3. Enthalpy difference method:

[0057] 1) When the heat exchanger in the circuit where the throttling device is located is the front evaporator, the heat exchange capacity of the circuit where the front evaporator is located is determined by the enthalpy difference method. The heat exchange capacity of the circuit where the front evaporator is located = (front air conditioning intake air temperature - front air conditioning target evaporation temperature) * front air conditioning blower mass air volume * dimension coefficient + (50)W.

[0058] 2) When the heat exchanger in the circuit where the throttling device is located is the rear evaporator, the heat exchange capacity of the circuit where the rear evaporator is located is determined using the enthalpy difference method. Estimated heat exchange capacity of the rear air conditioner evaporator = (rear air conditioner intake air temperature - rear air conditioner target evaporation temperature) * rear air conditioner blower mass air volume * dimension coefficient + (30)W.

[0059] After determining the target heat exchange amount of the loop, a first-order lag filter is performed on the target heat exchange amount to smooth the heat exchange amount and reduce the impact of noise on the heat exchange system.

[0060] Further, such as Figure 3 As shown, after determining the target heat exchange of the heat exchange main circuit and the target heat exchange of the heat exchange branch circuit, the ratio of the target heat exchange of the heat exchange main circuit to the target heat exchange of the heat exchange branch circuit is determined. The second opening of the second throttling device is determined by using the ratio of the target heat exchange of the heat exchange main circuit to the target heat exchange of the heat exchange branch circuit and the first opening. Then, the duty cycle is determined by using the second opening of the second throttling device. Among them, the ratio of the target heat exchange of the heat exchange main circuit to the target heat exchange of the heat exchange branch circuit can be equivalent to the ratio of the mass flow of the heat exchange main circuit to the mass flow of the heat exchange branch circuit.

[0061] For example,

[0062]

[0063] in, represents the mass flow rate of the main heat exchange circuit, represents the mass flow rate of the heat exchange branch circuit, represents the duty cycle of the main heat exchange circuit, represents the duty cycle of the heat exchange branch circuit, Indicates the actual throttling diameter and relationship, Indicates the actual throttling diameter and relationship.

[0064] The process of determining this relationship can be

[0065]

[0066]

[0067] in, represents mass flow, C is the flow coefficient, ε is the expansion coefficient, β is the ratio of the diameter of the electronic expansion valve to the diameter of the main circuit, ρ is the average density, For high pressure, For low pressure, is the isentropic coefficient, and d represents the true path.

[0068] Because the main heat exchange circuit and heat exchange branch circuit are equal, so the flow ratio of the main heat exchange circuit and the branch heat exchange circuit minus the same coefficient can be

[0069]

[0070] Since the actual diameter of the heat exchange branch circuit has a functional relationship with the duty cycle of the electronic expansion valve .

[0071] so, , we can get .

[0072] Further, such as Figure 3 As shown, after determining the second opening, the second opening can also be corrected by using the compensation coefficient between the heat exchange main circuit and the heat exchange branch circuit, and the corrected second opening is determined as the second opening of the heat exchange branch circuit. The compensation coefficient is determined based on the evaporation enthalpy difference of the working fluid in the heat exchange main circuit and the evaporation enthalpy difference of the working fluid in the heat exchange branch circuit. The compensation coefficient is compensated based on the target difference between the evaporation enthalpy difference of the working fluid in the heat exchange main circuit and the evaporation enthalpy difference of the working fluid in the heat exchange branch circuit on the basis of the second throttling device opening and the first throttling device opening.

[0073] A possible implementation manner is to determine the opening limit interval of the heat exchange branch circuit based on the first opening, the actual performance coefficient of the heat exchange main circuit and the actual performance coefficient of the heat exchange branch circuit.

[0074] Among them, the actual performance coefficient of the main heat exchange circuit includes one or more of the following: the resistance coefficient of the first throttling device, the relative coefficient between the actual opening of the first throttling device and the ideal opening of the first throttling device, and the relative coefficient between the actual flow of the first throttling device and the opening of the first throttling device.

[0075] The actual performance coefficient of the heat exchange branch circuit includes one or more of the following: the resistance coefficient of the second throttling device, the relative coefficient between the actual opening of the second throttling device and the ideal opening of the second throttling device, and the relative coefficient between the actual flow of the second throttling device and the opening of the second throttling device.

[0076] For example, Figure 3 As shown, firstly, the estimated opening value of the heat exchange branch circuit is determined by using the first opening, the actual performance coefficient of the heat exchange main circuit and the actual performance coefficient of the heat exchange branch circuit. .

[0077] in, Indicates the actual performance coefficient of the main heat exchange circuit, Indicates the inverse value of the actual performance coefficient of the heat exchange branch circuit.

[0078] Furthermore, using the opening estimation value , determine the upper limit of the opening limit interval as , the lower limit of the opening limit interval is .

[0079] This process sets the opening limit range and performs feedback limit adjustment on the second opening to avoid excessive opening changes that may cause the second opening to be adjusted into the adjustment dead zone, thereby causing the branch superheat or dryness to exceed the range. The use of feedback adjustment alone will fail in some operating conditions, causing irreversible damage to the system and improving the overall stability of the system.

[0080] S203, performing feedback limiting adjustment on the second opening through the opening limiting interval to obtain a target opening of the heat exchange branch circuit.

[0081] A possible implementation is Figure 3 As shown, the process of feedback limiting the second opening through the opening limit interval is that when the second opening belongs to the opening limit interval, the second opening is determined as the target opening. Or, when the second opening is greater than the upper limit opening of the opening limit interval, the upper limit opening is determined as the target opening. Or, when the second opening is less than the lower limit opening of the opening limit interval, the lower limit opening is determined as the target opening.

[0082] S204, controlling the first throttling device according to the first opening, and controlling the second throttling device according to the target opening.

[0083] The heat exchange system adjustment method provided in the embodiment of the present application only requires feedback from the heat exchange main circuit sensor and can control the opening of each throttling device with the help of other existing sensors in the heat exchange system. No additional sensors are required, which can reduce the number of components and reduce costs.

[0084] It should be noted that the above is only explained from the perspective of one heat exchange branch circuit among at least two heat exchange circuits connected to the system circuit in the heat exchange system. The target opening of other heat exchange branch circuits connected to the system circuit in the heat exchange system and the specific process of controlling the throttling device in other heat exchange branch circuits according to the target opening are the same as those of the heat exchange branch circuit, and the present application will not elaborate on this.

[0085] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the working principle of the device. It can be understood that in order to realize the above functions, the regulating device of the heat exchange system includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0086] The embodiment of the present application can divide the regulating device of the heat exchange system into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules.

[0087] It should be noted that the division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. Figure 4 FIG. 2 shows a possible schematic diagram of the composition of the regulating device of the heat exchange system involved in the above-mentioned embodiment. Figure 4 As shown, the regulating device 400 of the heat exchange system may include: a processing module 401 and a control module 402 .

[0088] Among them, the processing module 401 is used to support the heat exchange system adjustment device 400 provided in the embodiment of the present application to execute S201 or S202 in the heat exchange system adjustment method.

[0089] The control module 402 is used to support the heat exchange system regulating device 400 provided in the embodiment of the present application to execute S203 or S204 in the heat exchange system regulating method.

[0090] It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0091] The heat exchange system regulating device 400 provided in the embodiment of the present application is used to perform the above Figure 2 Or the adjustment method of the heat exchange system shown in 3, so the same effect as the adjustment method of the heat exchange system mentioned above can be achieved.

[0092] The present application also provides a heat exchange system regulating device. The heat exchange system regulating device may be the one described in the above embodiment. Figure 1 The throttling device shown can execute the regulating method and related steps of the heat exchange system in the above method embodiment.

[0093] The embodiment of the present application also provides a computer-readable storage medium on which instructions are stored. When the instructions are executed, the heat exchange system adjustment method and related steps in the above method embodiment are executed.

[0094] The embodiment of the present application also provides a computer program product. When the computer program product is run on a computer, the computer executes the heat exchange system adjustment method and related steps in the above method embodiment.

[0095] In some embodiments, the methods described herein may be implemented as computer program instructions encoded in a machine-readable format on a computer-readable storage medium or encoded on other non-transitory media or articles of manufacture.

[0096] The present application also provides a heat exchange system adjustment system 500, such as Figure 5 As shown, the regulating system 500 of the heat exchange system includes at least one processor 501 and at least one interface circuit 502 .

[0097] As an example, when the heat exchange system regulating system 500 includes a processor and an interface circuit, the processor may be Figure 5 The processor 501 shown in the solid line frame (or the processor 501 shown in the dotted line frame) may be Figure 5 The interface circuit 502 shown in the solid line frame (or the interface circuit 502 shown in the dotted line frame). When the chip system 500 includes two processors and two interface circuits, the two processors include Figure 5 The processor 501 shown in the solid line frame and the processor 501 shown in the dotted line frame, the two interface circuits include Figure 5 The interface circuit 502 shown in the solid line frame and the interface circuit 502 shown in the dotted line frame are not limited to this.

[0098] The processor 501 and the interface circuit 502 may be interconnected via a line. For example, the interface circuit 502 may be used to receive a signal. In another example, the interface circuit 502 may be used to send a signal to another device (e.g., the processor 501). For example, the interface circuit 502 may read a computer instruction stored in a memory and send the computer instruction to the processor 501. The processor 501 executes the instruction and implements the various steps in the above embodiments in combination with the input and output devices, such as implementing Figure 2 or Figure 3 The various steps performed in the method embodiment shown. Of course, the chip system may also include other discrete devices, which are not specifically limited in the embodiment of the present application.

[0099] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0100] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0101] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0102] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0103] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

[0104] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for regulating a heat exchange system, characterized in that: The heat exchange system comprises a system loop and at least two heat exchange loops connected to the system loop, the at least two heat exchange loops are arranged in parallel, the system loop comprises a pre-valve temperature sensor and a pressure sensor, and the method comprises: Determine the first opening of the first throttling device in the main heat exchange loop based on the actual temperature detected by the pre-valve temperature sensor in the system loop, the actual pressure detected by the pressure sensor and the feedback regulation method; the main heat exchange loop is the target regulation loop in the at least two heat exchange loops; Based on the first opening, respectively determine the second opening and the opening limit interval of the second throttling device in the heat exchange branch circuit; the heat exchange branch circuit is a heat exchange circuit in at least two heat exchange circuits connected to the system circuit in the heat exchange system; Performing feedback limiting adjustment on the second opening through the opening limiting interval to obtain a target opening of the heat exchange branch circuit; controlling the first throttling device according to the first opening, and controlling the second throttling device according to the target opening; The method of determining the first opening of the first throttling device in the main heat exchange loop based on the actual temperature detected by the pre-valve temperature sensor in the system loop, the actual pressure detected by the pressure sensor and the feedback adjustment method comprises: Determining an actual degree of subcooling of the main heat exchange circuit and a corresponding target degree of subcooling based on the saturation temperature of the actual pressure of the main heat exchange circuit and the actual temperature; The actual degree of subcooling and the target degree of subcooling are used to adjust a first opening of the first throttling device; the first opening is the opening when the actual degree of subcooling is equal to the target degree of subcooling.

2. The method according to claim 1, characterized in that The determining, based on the first opening, respectively the second opening and the opening limit interval of the second throttling device in the heat exchange branch circuit comprises: Determining a second opening degree of the heat exchange branch circuit based on the first opening degree, the target heat exchange amount of the heat exchange main circuit, and the target heat exchange amount of the heat exchange branch circuit; Based on the first opening, the actual performance coefficient of the main heat exchange circuit and the actual performance coefficient of the heat exchange branch circuit, the opening limit interval of the heat exchange branch circuit is determined; the actual performance coefficient of the main heat exchange circuit includes one or more of the following: the resistance coefficient of the first throttling device, the relative coefficient between the actual opening of the first throttling device and the ideal opening of the first throttling device, and the relative coefficient between the actual flow of the first throttling device and the opening of the first throttling device; the actual performance coefficient of the heat exchange branch circuit includes one or more of the following: the resistance coefficient of the second throttling device, the relative coefficient between the actual opening of the second throttling device and the ideal opening of the second throttling device, and the relative coefficient between the actual flow of the second throttling device and the opening of the second throttling device.

3. The method according to claim 2, characterized in that The determining, based on the first opening degree, the target heat exchange rate of the main heat exchange circuit and the target heat exchange rate of the heat exchange branch circuit, the second opening degree of the heat exchange branch circuit comprises: Determining a ratio of a target heat exchange amount of the main heat exchange loop to a target heat exchange amount of the branch heat exchange loop; The second opening of the second throttling device is determined using the ratio and the first opening.

4. The method according to claim 3, characterized in that The method further comprises: The second opening is corrected by using a compensation coefficient between the main heat exchange circuit and the sub-heat exchange circuit, and the corrected second opening is determined as the second opening of the sub-heat exchange circuit; the compensation coefficient is determined based on the difference in evaporation enthalpy of the working fluid in the main heat exchange circuit and the difference in evaporation enthalpy of the working fluid in the sub-heat exchange circuit.

5. The method according to claim 1, characterized in that The step of performing feedback limiting adjustment on the second opening through the opening limiting interval to obtain a target opening of the heat exchange branch circuit includes: When the second opening degree belongs to the opening degree restriction interval, determining the second opening degree as the target opening degree; or, when the second opening is greater than an upper limit opening of the opening limit interval, determining the upper limit opening as the target opening; Alternatively, when the second opening is smaller than a lower limit opening of the opening restriction interval, the lower limit opening is determined as the target opening.

6. A heat exchange system regulating device, characterized in that: The heat exchange system comprises a system loop and at least two heat exchange loops connected to the system loop, wherein the at least two heat exchange loops are arranged in parallel, the system loop comprises a pre-valve temperature sensor and a pressure sensor, and the device comprises: a processing module, configured to determine a first opening of a first throttling device in a main heat exchange loop based on an actual temperature detected by the pre-valve temperature sensor in the system loop, an actual pressure detected by the pressure sensor, and a feedback regulation method; the main heat exchange loop is a target regulation loop in the at least two heat exchange loops; based on the first opening, respectively determine a second opening and an opening restriction interval of a second throttling device in a branch heat exchange loop; the branch heat exchange loop is a heat exchange loop in the at least two heat exchange loops connected to the system loop in the heat exchange system; a control module, configured to perform feedback limiting adjustment on the second opening through the opening limiting interval to obtain a target opening of the heat exchange branch circuit; control the first throttling device according to the first opening, and control the second throttling device according to the target opening; The processing module is specifically used to determine the actual subcooling degree and the corresponding target subcooling degree of the heat exchange main circuit based on the saturation temperature of the actual pressure of the heat exchange main circuit and the actual temperature; and to adjust the first opening degree of the first throttling device using the actual subcooling degree and the target subcooling degree; the first opening degree is the opening degree when the actual subcooling degree is equal to the target subcooling degree.

7. A heat exchange system regulating device, characterized in that: The regulating device of the heat exchange system comprises a processor and a memory, wherein the memory stores machine executable instructions that can be executed by the processor, and the processor executes the machine executable instructions to implement the regulating method of the heat exchange system according to any one of claims 1-5.

8. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instructions are executed by a processor, the steps of the method for regulating a heat exchange system according to any one of claims 1 to 5 are implemented.

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