Intelligent water temperature control method, device and equipment for swimming pool heat pump and storage medium

Abstract

The invention provides an intelligent water temperature control method, device and equipment for a swimming pool heat pump and a storage medium, and the method comprises the steps: collecting original data, and preprocessing the original data to obtain operation state data; the original data comprises swimming pool water temperature, target water temperature, evaporator fin temperature and spraying water temperature; the temperature difference between the swimming pool water temperature and the set water temperature is calculated and converted into water temperature compensation power; the defrosting priority is quantified to obtain a defrosting weight; according to the water temperature compensation power and the defrosting weight, the heating proportion and the defrosting proportion of the swimming pool are calculated; the heating proportion and the defrosting proportion of the swimming pool are converted into control instructions; the control instruction is issued to an execution mechanism, and end judgment and back-cut constant temperature are carried out in the same control period; the ending judgment is completed by judging that a defrosting action index reaches a threshold value or reaches a time upper limit, and the defrosting action index is obtained by accumulating the spraying and machine side heat production effects of the current period.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of device control, and particularly relates to a pool heat pump intelligent water temperature control method, device, equipment and storage medium. BACKGROUND

[0002] In constant-temperature pool, hot spring and other hot water supply scenarios, heat pump equipment is widely used to convert environmental heat energy into usable heat energy of water body, so as to keep the water temperature stable. However, in a low-temperature and high-humidity environment, the surface of the heat pump evaporator is prone to frosting, and the frosting can significantly reduce the heat exchange efficiency, increase the energy consumption, and even cause the operation of the equipment to be interrupted. The existing technology generally adopts a reverse cycle defrosting mode, that is, the flow direction of the refrigerant is switched through a four-way valve, so that the heat pump enters a refrigeration mode and the evaporator is heated by using a high-temperature condenser, to realize defrosting. Although this mode can remove the frost layer, the heat pump stops providing heat to the pool during the defrosting process, the water temperature fluctuates obviously, and the user experience is affected; at the same time, the defrosting energy efficiency is low, the switching of the four-way valve and the operation of the high-frequency compressor consume a large amount of electric energy, and the heat generated during the heating process is not fully utilized, and the waste heat is directly dissipated; the defrosting waste water is often directly discharged, causing waste of heat energy and water resources; the complex four-way valve and pipeline structure increases the manufacturing cost and the maintenance difficulty, and the failure of the four-way valve can also cause the defrosting to fail and even cause the equipment to be damaged. In addition, the existing control strategy usually relies on fixed time or simple temperature difference to trigger and end defrosting, lacks precise response to different working conditions, cannot realize real-time coordination of spray defrosting and water temperature constant-temperature, and is prone to problems such as excessive defrosting, insufficient heating or frequent switching. Under the conditions of long-time operation and variable climate, these defects can cause the overall energy efficiency of the system to decrease, the service life of the equipment to be shortened, and the use comfort to be reduced. SUMMARY

[0003] The present application aims to design a pool heat pump intelligent water temperature control method, device, equipment and storage medium, which can realize synchronous control of spray defrosting and water temperature constant-temperature, efficient recovery of waste heat, and overall improvement of system energy efficiency and reliability, and is suitable for efficient and stable operation of various constant-temperature pools and similar hot water systems.

[0004] In order to achieve the above-mentioned purpose, in a first aspect of the present application, a pool heat pump intelligent water temperature control method is provided, and the method comprises:

[0005] Collecting original data and preprocessing the original data to obtain running state data; the original data includes pool water temperature, target water temperature, evaporator fin temperature and spray water temperature; the preprocessing includes time sequence synchronization and abnormality elimination;

[0006] The temperature difference between the pool water temperature and the set water temperature is calculated and converted into a water temperature compensation power; the defrosting priority is quantified to obtain a defrosting weight, which is obtained by normalizing the spray heating effect, and the spray heating effect is the difference between the spray water temperature and the evaporator fin temperature;

[0007] The pool heating ratio and the defrosting ratio are calculated according to the water temperature compensation power and the defrosting weight; the pool heating ratio is introduced into a heat guarantee item to ensure that the heating power corresponding to the pool heating ratio is not lower than the water temperature compensation power; the pool heating ratio and the defrosting ratio are converted into control instructions, and the control instructions include a duty cycle instruction of the spray branch and a compressor power instruction;

[0008] The control instructions are sent to the execution mechanism, and the end determination and the return to the constant temperature are performed in the same control cycle; the end determination is completed by judging whether the defrosting action index reaches a threshold value or reaches an upper limit of time, and the defrosting action index is obtained by accumulating the spray and the machine-side heat production in the current cycle.

[0009] Further, the pool water temperature is measured by a temperature sensor installed on the pool circulating outlet pipe; the evaporator fin temperature is collected by a thermistor sensor located in the central part of the fin bundle; and the spray water temperature is obtained by a fast-response thermocouple at the outlet of the spray pipe.

[0010] Further, the collection process of the original data is triggered by the clock of the control unit in each control cycle, and if the change of any sensor in two consecutive sampling cycles exceeds a preset reasonable range, the value of the last cycle is used instead.

[0011] Further, a defrosting transition penalty term is introduced into the water temperature compensation power, which is used to pre-increase the heating power of the main loop before the heat is about to be diverted to the defrosting loop.

[0012] Further, a decay factor is introduced into the defrosting weight, which is adjusted by the control unit according to the average spray heating effect in the past several cycles, and is decreased by a preset proportion when it is detected that the spray heating effect in K consecutive cycles is lower than an empirical threshold of effective spray heating.

[0013] Further, the duty cycle instruction is calculated by calculating the PWM duty cycle of the electromagnetic valve in the spray loop according to the defrosting ratio, and the actual spray water flow is calculated based on the rated flow of the spray branch water pump.

[0014] Further, the compressor power instruction is calculated according to the pool heating ratio and the rated output power of the heat pump, and the compressor power instruction is mapped into the target frequency of the variable frequency unit or the start-stop duty cycle of the fixed frequency unit.

[0015] An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method as described above when executing the program.

[0016] A computer readable storage medium, having stored thereon a computer program, wherein the program, when executed by a processor, implements the method as described above.

[0017] In a second aspect of the present application, a pool heat pump intelligent water temperature control device is provided, the device comprising:

[0018] A data acquisition module is configured to acquire raw data and pre-process the raw data to obtain running state data; the raw data includes pool water temperature, target water temperature, evaporator fin temperature and spray water temperature; the pre-processing includes time sequence synchronization and abnormality elimination;

[0019] A demand determination module is configured to calculate the temperature difference between the pool water temperature and the set water temperature and convert it into water temperature compensation power; and quantize the defrosting priority to obtain a defrosting weight, wherein the defrosting weight is obtained by normalizing the spray heating effect, and the spray heating effect is the difference between the spray water temperature and the evaporator fin temperature;

[0020] An instruction generation module is configured to calculate a pool heating ratio and a defrosting ratio according to the water temperature compensation power and the defrosting weight; the pool heating ratio is introduced with a heat guarantee item to ensure that the heating power corresponding to the pool heating ratio is not lower than the water temperature compensation power; and the pool heating ratio and the defrosting ratio are converted into control instructions, wherein the control instructions include a duty cycle instruction of the spray branch and a compressor power instruction;

[0021] An execution record module is configured to issue the control instructions to an execution mechanism, and perform end determination and return to constant temperature in the same control cycle; the end determination is completed by judging whether the defrosting action index reaches a threshold or reaches an upper limit of time, and the defrosting action index is obtained by accumulating the spray and machine-side heat production in the current cycle.

[0022] The present application has at least the following beneficial technical effects:

[0023] In response to the above problems, the present invention provides an intelligent water temperature control method, device, equipment and storage medium for a swimming pool heat pump. By arranging high-precision sensors at key positions of the water channel, the swimming pool water temperature, target water temperature, fin temperature and spray water temperature are synchronously collected, a real-time operating status set is constructed and the temperature difference between the spray and fin is calculated; in combination with the heat capacity and operating cycle of the swimming pool water body, a water temperature compensation power calculation model is designed that introduces a defrost preheating penalty term to achieve an early response to the defrost heat diversion; in the heat distribution strategy, a proportional formula containing a defrost gain correction term is adopted to dynamically couple the water temperature demand and the defrost priority, and convert them into a spray branch duty cycle instruction and a compressor power instruction; in the execution stage, the dual criteria of the defrost action index and the time upper limit based on the accumulation of execution volume are used to achieve accurate termination of defrosting and smooth switching to constant temperature mode without the need for additional sensors.

[0024] Through the above mechanism, the system can achieve synchronous control of spray defrost and water temperature control, efficient recovery of waste heat, and overall improvement of system energy efficiency and reliability. It is suitable for the efficient and stable operation of various constant temperature swimming pools and similar hot water systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative effort.

[0026] Figure 1 This is a flow chart of an intelligent water temperature control method for a swimming pool heat pump according to the present invention.

[0027] Figure 2 This is a framework diagram of an intelligent water temperature control device for a swimming pool heat pump according to the present invention. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In one or more embodiments, Figure 1 As shown, a method for intelligent water temperature control of a swimming pool heat pump is disclosed, the method comprising the following steps:

[0030] S1: Collecting raw data and preprocessing the raw data to obtain operating status data; the raw data includes swimming pool water temperature, target water temperature, evaporator fin temperature and spray water temperature; the preprocessing includes time series synchronization and abnormality elimination;

[0031] Specifically, the target of this step is to complete the collection and preliminary processing of operating state data in the pool heat pump spray defrosting and waste heat recovery system, and to provide accurate and synchronous basic data for subsequent water temperature compensation calculation and heat distribution strategy. Because the spray defrosting process is dynamic, and the water temperature stability depends on the real-time coordination of defrosting and heating, the data collection needs to be designed in terms of hardware arrangement, sampling method and signal processing, so that the results are both representative and easy to use directly.

[0032] This step directly collects the pool water temperature T w , the target water temperature T set , the evaporator fin temperature T f and the spray water temperature T s from the physical system. w set f s

[0033] The pool water temperature T w is measured by a high-precision digital temperature sensor installed on the pool circulating outlet pipe, such as a platinum resistance thermometer (PT1000) with a resolution of 0.01, and the signal is sent to the control unit through a 4-20 mA conversion module. The target water temperature T set is input by the user on the heat pump control panel or the upper computer and stored in the parameter register of the control unit. The evaporator fin temperature T f is collected by a thermistor sensor located in the center of the fin bundle, which can reflect the average temperature of the overall heat exchange surface, and the signal is transmitted through the built-in analog-to-digital conversion module. The spray water temperature T s is obtained by a fast-response thermocouple at the outlet of the spray pipe, and the sheath material is corrosion-resistant and suitable for the chemical properties of the pool water to ensure fast response under water flow impact.

[0034] The collection process is triggered simultaneously by the clock of the control unit in each control period, ensuring the time synchronization of each data. For example, when the fin temperature is low and the spray water temperature is high, the calculated temperature difference can accurately reflect the heating effect of the spray. To avoid abnormal values caused by electromagnetic interference or water flow disturbance, if the change of a sensor in two consecutive sampling periods exceeds the physical reasonable range (such as temperature change exceeding 5), the system temporarily uses the value of the last period instead.

[0035] After completing synchronous sampling and abnormal value elimination, the instantaneous temperature difference between the spray water temperature and the fin temperature is calculated:

[0036] ΔT sf = T s -T f ;

[0037] Where ΔT sf represents the difference between the spray water temperature and the fin temperature, T s is measured by the thermocouple at the outlet of the spray pipe, and Tf Thermistor measurement from the center of the fin. Both are taken at the same sampling period, and the results are kept consistent in physical dimension to reflect the driving force of the spray hot water on the fin temperature rise. When ΔT sf is higher than the empirical threshold, the spray effect is better, which is conducive to rapid defrosting; otherwise, the spray strategy or heating power may need to be adjusted.

[0038] S2: Calculate the temperature difference between the pool water temperature and the set water temperature, and convert it to water temperature compensation power; quantify the defrosting priority to obtain a defrosting weight, which is obtained by normalizing the spray heating effect, and the spray heating effect is the difference between the spray water temperature and the evaporator fin temperature;

[0039] Specifically, the goal of this step is to calculate the compensation power required to maintain the pool water temperature in the current period based on the operating state data obtained in the first step, combined with the special working conditions of pool heat pump spray defrosting and waste heat recovery, and at the same time evaluate the immediate priority of spray defrosting. This calculation not only depends on the difference between the pool water temperature and the target temperature, but also introduces the dynamic performance of the spray and fin temperature difference, so that the heating and defrosting can be coordinated in subsequent heat distribution.

[0040] First, the control unit calculates the temperature difference ΔT w between the pool water temperature and the set value: set T w -T comp This is a direct basis for judging the current heating demand. In order to reflect the influence of different pool capacities and different water body thermal inertia, the temperature difference is converted to power compensation demand P pool ( calculated by the pool volume and the specific heat capacity of water measured on site), and combined with the time adjustment coefficient k t ( set according to the control period and the expected temperature rise time). In the spray defrosting scene, the instantaneous heat diversion effect of defrosting on the main heating circuit also needs to be considered, so a transition penalty term λ sf ·g(ΔT d ) related to ΔT sf is added to the formula, which is used to reserve heating margin for the upcoming heat diversion:

[0041]

[0042] Where the first term is the basic compensation power, and the second term is the defrosting transition penalty term; λ d is the adjustment coefficient, which is set by experiment to control the additional heating preparation when the spray temperature difference is insufficient; ΔT th is the empirical threshold of spray effective heating ( such as 15), and when ΔT sfThe increase of this item is lower, so as to raise the heating power of the main circuit in advance before the heat is diverted to the defrosting circuit, avoiding the water temperature drop. This design is an improvement for the "instant heat transfer" feature of pool heat pump spray defrosting, which is not common in general heat pump systems.

[0043] Further, in order to guide the subsequent heat distribution ratio, the priority of the current defrosting needs to be quantified. This step uses the normalized spray heating effect as the defrosting weight w def , and adds a decay factor β t to reflect the impact of continuous high-intensity defrosting on system thermal efficiency. The decay factor is automatically adjusted by the control unit according to the average ΔT sf in the past several cycles, and when continuous defrosting and the effect gradually decrease, the weight is reduced to protect system efficiency:

[0044]

[0045] where β t ∈(0, 1], the initial value is 1, and it decreases by a set proportion every time it is detected that ΔT sf is lower than ΔT th for several consecutive cycles. This processing method can prevent repeated investment of a large amount of heat under low-efficiency defrosting conditions, and ensure that the heat distribution is tilted towards maintaining the water temperature.

[0046] Through the above calculation, P comp integrates water temperature deviation, pool heat capacity, time adjustment, defrosting preheating penalty and other factors, and directly reflects the minimum heating capacity required by the main circuit in the next cycle; w def quantifies the importance of defrosting based on the spray effect and historical decay characteristics. Both are derived from the data collected in the first step and calculated in the same cycle, ensuring immediate consistency with the system thermal state.

[0047] S3: Calculate the pool heating ratio and defrosting ratio according to the water temperature compensation power and the defrosting weight; introduce a heat guarantee item into the pool heating ratio to ensure that the heating power corresponding to the pool heating ratio is not lower than the water temperature compensation power; convert the pool heating ratio and the defrosting ratio into control instructions, which include the duty cycle instruction of the spray branch and the compressor power instruction;

[0048] Specifically, the goal of this step is to calculate the water temperature compensation power P comp and the defrosting weight w defConverts into the heat distribution scheme that can be directly executed in the current control cycle, and further generates the actual control instructions of the heat pump compressor and the spray branch. It plays a role in the whole patent scheme - the previous steps complete the state perception and demand calculation, and this step will put these calculation results into controllable physical actions to ensure the stable pool water temperature and efficient cooperation of spray defrosting. Since the pool heat pump will appear the phenomenon of instantaneous heat flow transfer from the main heating circuit to the defrosting circuit during spray defrosting, the distribution strategy must consider both goals: guaranteeing water temperature stability and rapid defrosting, which is also the special place of this step relative to general heat pump control.

[0049] First, P comp and w def are needed to calculate the pool heating ratio α pool and the defrosting ratio α def . Considering the nonlinear effect of spray defrosting on system heat balance, this step introduces two key items in the distribution calculation:

[0050] Heat guarantee item: Ensure that the corresponding heating power of α pool is not lower than P comp ;

[0051] Defrosting gain correction item: When w def is high, add a correction quantity inversely proportional to P comp to the defrosting ratio, which reflects the strategy of “prioritizing defrosting when water temperature margin is large”.

[0052] Considering the above factors, the calculation formula of the distribution ratio is:

[0053]

[0054] Where P rated is the rated output power of the heat pump, obtained through the equipment nameplate or test; γ s is the proportional smoothing coefficient, used to suppress system efficiency fluctuations caused by rapid changes in the ratio; η boost is the defrosting gain coefficient, adjusted by actual measurement, so that the defrosting ratio is moderately increased when the water temperature margin is large without affecting the constant temperature performance. The special nature of this formula is that the defrosting gain correction item is specially designed based on the pool heat pump spray defrosting scenario, which not only uses w def to represent the defrosting effect, but also introduces the inverse relationship of P comp to dynamically balance the water temperature demand.

[0055] Further, the distribution ratio needs to be converted into specific control instructions of the actuator. In the spray circuit, according to α def , the PWM duty cycle d s of the electromagnetic valve is calculated, and it is corresponded to the actual spray water flow Qspray =α def Q rated , where Q rated is the rated flow of the sprinkler branch pump. The duty cycle signal directly drives the solenoid valve through the digital output port of the control unit to achieve flow regulation. For the swimming pool heating circuit, according to α pool Calculate the compressor power command P cmd And map it to the target frequency f of the frequency conversion unit cmd Or the start-stop duty cycle of a fixed-frequency unit:

[0056] P cmd =α pool ·P rated ;

[0057] P cmd The generation of α ensures that the pool heating output is consistent with the calculated ratio while not exceeding the rated capacity of the heat pump. def Higher P cmd will automatically decrease, thus transferring more available power to the defrost branch; on the contrary, when w def Lower or P comp When α is large, pool Rising, giving priority to ensuring stable water temperature.

[0058] S4: Sending the control instruction to the actuator, performing an end determination and switching back to constant temperature in the same control cycle; the end determination is completed by judging whether the defrost action index reaches a threshold or reaches a time limit, and the defrost action index is obtained by accumulating the spraying and heat generation of the machine side in the current cycle;

[0059] Specifically, the goal of this step is to convert the sprinkler branch duty cycle instruction d given in step 3 into s and compressor power command P cmd Directly dispatched to the actuator, the defrost process is concluded and the temperature is switched back to constant temperature within the same control cycle. No new modeling or redistribution is required; the focus is solely on command implementation, process monitoring, and termination decision-making, ensuring reproducible actions and consistency with previous calculations.

[0060] The execution details are implemented discretely according to the control cycle. First, the spray channel is divided into two parts according to d s Generate valve opening and closing sequence, and form repeatable spray envelope with constant flow of circulation pump; secondly, the heating channel is set according to P cmd Generate the compressor target power and complete the soft start / soft back cut-off according to the established slope limit. In order to complete the defrost end judgment without introducing new measurement quantities, this step constructs a cumulative "defrost action index" J based on the execution quantity. def, the spray in the current period and the heat production on the machine side are accumulated discretely, and when it reaches a threshold or reaches an upper limit of time, it is determined to be completed. The recursive calculation is as follows:

[0061] J def [k]=J def [k-1]+φ·d s [k]·P cmd [k];

[0062] wherein J def [k] is the cumulative index of the kth control period; d s [k] is the duty cycle of the valve in the period; P cmd [k] is the compressor power instruction in the period; and φ is the spray-machine side coupling calibration coefficient (obtained by factory calibration or on-site self-learning, used to map the two execution quantities to a unified cumulative scale, and the dimensional difference has been handled by normalization).

[0063] The defrosting completion determination follows a double condition strategy of “cumulative action reaching a threshold or reaching an upper limit of time”. The threshold J th is obtained by factory calibration or on-site self-learning; and the upper limit of time t lim is a control parameter. The determination logic is as follows:

[0064] If J def [k]≥J th or

[0065] wherein J th is the cumulative index threshold; and t lim is the upper limit of time in control period count. If either condition is met, the switching back is executed: d s is set to zero (the spray is immediately turned off), and P cmd is adjusted back to the constant temperature power with a set slope (for example, maintaining the baseline level obtained in step 3), to avoid the load step on the heat pump side causing water temperature fluctuations. To ensure reproducibility, the control unit records the trajectory of d s , P cmd , J def and the trigger reason (threshold satisfaction or time reaching) in the current period when switching back, as the basis for subsequent parameter setting.

[0066] The output includes two items: one is the execution closing state of the current period (the spray is turned off and the compressor is stabilized at the constant temperature power instruction), and the other is the execution log package (including the final value of J def and the trigger information). Both items are generated by the control unit and saved in the local storage for direct reading and use by the next control period.

[0067] In one or more embodiments, as Figure 2As shown, a pool heat pump intelligent water temperature control device is disclosed, which comprises:

[0068] A data acquisition module is configured to acquire raw data and pre-process the raw data to obtain running state data; the raw data includes pool water temperature, target water temperature, evaporator fin temperature and spray water temperature; the pre-processing includes time sequence synchronization and abnormality elimination;

[0069] A demand determination module is configured to calculate the temperature difference between the pool water temperature and the set water temperature and convert it into water temperature compensation power; and quantize the defrosting priority to obtain a defrosting weight, which is obtained by normalizing the spray heating effect, wherein the spray heating effect is the difference between the spray water temperature and the evaporator fin temperature.

[0070] An instruction generation module is configured to calculate the pool heating ratio and the defrosting ratio according to the water temperature compensation power and the defrosting weight; the pool heating ratio is introduced with a heat guarantee item to make the heating power corresponding to the pool heating ratio not lower than the water temperature compensation power; and the pool heating ratio and the defrosting ratio are converted into control instructions, wherein the control instructions include the duty cycle instruction of the spray branch and the compressor power instruction.

[0071] An execution record module is configured to issue the control instructions to an execution mechanism, and perform end determination and return to constant temperature in the same control cycle; the end determination is completed by judging that the defrosting action index reaches a threshold or reaches an upper limit of time, and the defrosting action index is obtained by accumulating the spray and machine-side heat production in the current cycle.

[0072] It is worth noting that the specific working process of the pool heat pump intelligent water temperature control device provided by the embodiment of the present application is the same as the process of the pool heat pump intelligent water temperature control method described in the above embodiment, and will not be repeated here.

[0073] The embodiment of the present application also provides a pool heat pump intelligent water temperature control device, which comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor; when the processor executes the computer program, the steps in the above-mentioned pool heat pump intelligent water temperature control method embodiment are implemented, such as the steps described in Figure 1

[0074] S1-S4; alternatively, when the processor executes the computer program, the functions of the modules in the above-mentioned system embodiments are implemented.

[0075] ​For example, the computer program can be divided into one or more modules, which are stored in the memory and executed by the processor to complete the present application. The one or more modules can be a series of computer program instruction segments capable of completing a specific function, which are used to describe the execution process of the computer program in the pool heat pump intelligent water temperature control device.

[0076] The pool heat pump intelligent water temperature control device can be a desktop computer, a notebook computer, a palm computer, a cloud server and the like. The pool heat pump intelligent water temperature control device can include, but is not limited to, a processor, a memory. Those skilled in the art can understand that the pool heat pump intelligent water temperature control device can also include an input / output device, a network access device, a bus and the like.

[0077] The processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor and the like. The processor is the control center of the pool heat pump intelligent water temperature control device, and connects various parts of the pool heat pump intelligent water temperature control device through various interfaces and lines.

[0078] The memory can be used to store the computer program and / or modules, and the processor realizes various functions of the pool heat pump intelligent water temperature control device by running or executing the computer program and / or modules stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required by a function and the like; the data storage area can store data created according to the running of the air conditioner controller and the like. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, for example, a hard disk, a memory, a plug-in hard disk, a smart memory card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state memory devices.

[0079] The modules integrated in the pool heat pump intelligent water temperature control device can be stored in a computer readable storage medium if they are implemented in the form of software function units and sold or used as independent products. Based on this understanding, all or part of the processes in the above-mentioned embodiment methods can also be completed by a computer program instructing related hardware. The computer program can be stored in a computer readable storage medium. When the computer program is executed by a processor, the steps of the above-mentioned various method embodiments can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0080] It can be understood by those skilled in the art that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware. The program can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned various method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0081] The above is the preferred embodiment of the present application. It should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application. These improvements and refinements are also considered within the scope of protection of the present application.

Claims

1. A swimming pool heat pump intelligent water temperature control method, characterized in that: The method comprises: Collecting raw data and preprocessing the raw data to obtain operating status data; the raw data includes swimming pool water temperature, target water temperature, evaporator fin temperature and spray water temperature; the preprocessing includes time series synchronization and abnormality elimination; The temperature difference between the pool water temperature and the set water temperature is calculated and converted into water temperature compensation power; the defrost priority is quantified to obtain a defrost weight, which is obtained by normalizing the spray heating effect, which is the difference between the spray water temperature and the evaporator fin temperature; The pool heating ratio and defrost ratio are calculated based on the water temperature compensation power and the defrost weight. A heat guarantee item is introduced into the pool heating ratio to ensure that the heating power corresponding to the pool heating ratio is not less than the water temperature compensation power. The pool heating ratio and defrost ratio are converted into control instructions, including a duty cycle instruction for the spray branch and a compressor power instruction. The control instruction is sent to the execution mechanism, and the end judgment and the constant temperature are switched back in the same control cycle; the end judgment is completed by judging that the defrost action index reaches a threshold or reaches a time limit, and the defrost action index is obtained by accumulating the spraying and machine-side heat generation effects of the current cycle.

2. The intelligent water temperature control method for a swimming pool heat pump according to claim 1, characterized in that: The swimming pool water temperature is measured by a temperature sensor installed on the swimming pool circulation outlet pipe; the evaporator fin temperature is collected by a thermistor sensor located in the center of the fin bundle; and the spray water temperature is obtained at the spray pipe outlet by a fast-response thermocouple.

3. The intelligent water temperature control method for a swimming pool heat pump according to claim 1, characterized in that: The raw data collection process is triggered simultaneously by the control unit's clock in each control cycle. If the change of any sensor exceeds the preset reasonable range in two consecutive sampling cycles, the value of the previous cycle is used instead.

4. The intelligent water temperature control method for a swimming pool heat pump according to claim 1, characterized in that: A defrost transition penalty term is introduced into the water temperature compensation power to pre-increase the heating power of the main circuit before the heat is diverted to the defrost circuit.

5. The intelligent water temperature control method for a swimming pool heat pump according to claim 1, characterized in that: An attenuation factor is also introduced into the defrost weight, which is adjusted by the control unit based on the average spray heating effect in the past several cycles. When it is detected that the spray heating effect is lower than the empirical threshold of effective spray heating for K consecutive cycles, the attenuation factor is decreased according to a preset ratio.

6. The intelligent water temperature control method for a swimming pool heat pump according to claim 1, characterized in that: The duty cycle instruction calculates the PWM duty cycle of the solenoid valve according to the defrost ratio in the spray circuit, and calculates the actual spray water flow rate based on the rated flow rate of the spray branch water pump.

7. The intelligent water temperature control method for a swimming pool heat pump according to claim 1, characterized in that: The compressor power instruction is calculated based on the swimming pool heating ratio and the rated output power of the heat pump, and the compressor power instruction is mapped to the target frequency of the variable frequency unit or the start-stop duty cycle of the fixed frequency unit.

8. An electronic device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method according to any one of claims 1 to 7 is implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. An intelligent water temperature control device for a swimming pool heat pump, characterized in that: The device comprises: A data acquisition module is used to collect raw data and pre-process the raw data to obtain operating status data; the raw data includes swimming pool water temperature, target water temperature, evaporator fin temperature and spray water temperature; the pre-processing includes time series synchronization and abnormality elimination; The demand determination module is used to calculate the temperature difference between the pool water temperature and the set water temperature and convert it into water temperature compensation power; quantify the defrost priority to obtain a defrost weight, which is obtained by normalizing the spray heating effect, which is the difference between the spray water temperature and the evaporator fin temperature; An instruction generation module is configured to calculate the pool heating ratio and defrost ratio based on the water temperature compensation power and the defrost weight; the pool heating ratio includes a heat guarantee term to ensure that the heating power corresponding to the pool heating ratio is not less than the water temperature compensation power; and the pool heating ratio and defrost ratio are converted into control instructions, including a duty cycle instruction for the spray branch and a compressor power instruction. An execution recording module is used to send the control instruction to the execution mechanism, and perform end judgment and return to constant temperature in the same control cycle; the end judgment is completed by judging that the defrost action index reaches a threshold or reaches a time limit, and the defrost action index is obtained by accumulating the spraying and machine-side heat generation effects of the current cycle.

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