Compressor frequency modulation control method, device and equipment of heat pump system and storage medium

Abstract

The invention relates to the technical field of heat pumps, and provides a compressor frequency modulation control method, device and equipment of a heat pump system and a storage medium, and the method comprises the steps that the operation mode, the water inlet temperature, the target temperature and the environment temperature of the heat pump system are obtained; wherein the operation modes comprise a heating mode, an energy-saving mode and a mute mode; determining a temperature difference and a temperature difference interval corresponding to the temperature difference based on the inlet water temperature and the target temperature; determining a target operation frequency based on the operation mode, a temperature difference interval corresponding to the temperature difference and the environment temperature; and according to the target operation frequency, the operation state of a compressor in the heat pump system is controlled. According to the mode, the requirements of the user in different scenes are met, and meanwhile, the balance between the performance and the energy efficiency is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat pump, in particular to a compressor frequency control method, device and equipment of heat pump system and storage medium. BACKGROUND

[0002] The heat pump heats the water temperature by controlling the running frequency of the compressor. In related technologies, the heat pump controls the compressor by using fixed control logic or single control parameter under different load demands and use scenarios. For example, when running at night or under medium and low load, the compressor is controlled to maintain a high running frequency, which leads to energy waste and noise disturbance. However, under a lower running frequency, the water temperature fluctuates greatly and the heating is slow, so it is difficult to balance performance, energy efficiency and user experience. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a compressor frequency control method, device and equipment of heat pump system to meet the needs of users in different scenarios and balance performance and energy efficiency.

[0004] In a first aspect, the present application provides a compressor frequency control method of heat pump system, the method comprising: obtaining the running mode, the water inlet temperature, the target temperature and the environment temperature of the heat pump system; wherein the running mode comprises a heating mode, an energy-saving mode and a silent mode; determining the temperature difference and the temperature difference interval corresponding to the temperature difference based on the water inlet temperature and the target temperature; determining the target running frequency based on the running mode, the temperature difference interval corresponding to the temperature difference and the environment temperature; and controlling the running state of the compressor in the heat pump system according to the target running frequency.

[0005] Further, a plurality of temperature difference intervals are preset in the system; determining the target running frequency based on the running mode, the temperature difference interval corresponding to the temperature difference and the environment temperature, comprising: if the running mode is the heating mode, determining the first target running frequency based on the heating mode and the temperature difference interval; if the running mode is the energy-saving mode, determining the second target running frequency based on the energy-saving mode, the temperature difference interval and the environment temperature; and if the running mode is the silent mode, determining the third target running frequency based on the silent mode, the temperature difference interval and the environment temperature.

[0006] Further, determining the second target running frequency based on the energy-saving mode, the temperature difference interval and the environment temperature, comprising: determining the first temperature difference interval based on the energy-saving mode and the temperature difference; determining the first target minimum running frequency based on the first temperature difference interval when the environment temperature is greater than the environment temperature threshold; determining the first target minimum running frequency as the second target running frequency; determining the first target maximum running frequency based on the first temperature difference interval when the environment temperature is less than or equal to the environment temperature threshold; and determining the first target maximum running frequency as the second target running frequency.

[0007] Further, the third target operating frequency is determined based on the mute mode, the temperature difference interval and the ambient temperature, comprising: determining a second temperature difference interval based on the mute mode and the temperature difference; determining a second target minimum operating frequency based on the second temperature difference interval when the ambient temperature is greater than an ambient temperature threshold; determining the second target minimum operating frequency as the third target operating frequency; determining a second target maximum operating frequency based on the second temperature difference interval when the ambient temperature is less than or equal to the ambient temperature threshold; and determining the second target maximum operating frequency as the third target operating frequency.

[0008] Further, the operating state of the compressor in the heat pump system is controlled according to the target operating frequency, comprising: if the target operating frequency is equal to zero, the compressor is stopped; and if the target operating frequency is greater than zero, the compressor is operated according to the target operating frequency.

[0009] Further, the method further comprises: determining the running duration of the compressor at the target operating frequency; and adjusting the target operating frequency by at most a preset adjustment frequency when the running duration reaches a running duration threshold.

[0010] Further, after the operating state of the compressor in the heat pump system is controlled according to the target operating frequency, the method further comprises: determining a first calculation result obtained by adding the target temperature and a preset temperature difference; stopping the compressor if the water inlet temperature is greater than or equal to the first calculation result and is maintained for a preset duration; determining a second calculation result obtained by subtracting the temperature difference from the target temperature; and restarting the compressor according to the operating mode if the actual water temperature drops to the second calculation result.

[0011] In a second aspect, the present application further provides a compressor frequency control device of a heat pump system, comprising: an acquisition module for acquiring an operating mode, a water inlet temperature, a target temperature and an ambient temperature of the heat pump system; wherein the operating mode comprises a heating mode, an energy-saving mode and a mute mode; a first determination module for determining a temperature difference and a temperature difference interval corresponding to the temperature difference based on the water inlet temperature and the target temperature; a second determination module for determining a target operating frequency based on the operating mode, the temperature difference interval corresponding to the temperature difference and the ambient temperature; and a control module for controlling the operating state of a compressor in the heat pump system according to the target operating frequency.

[0012] In a third aspect, the present application further provides a compressor frequency control device of a heat pump system, comprising a processor and a memory, wherein the memory stores computer executable instructions capable of being executed by the processor, and the processor executes the computer executable instructions to implement the compressor frequency control method of the heat pump system.

[0013] Fourthly, the present invention also provides a computer-readable storage medium storing computer-executable instructions, which, when called and executed by a processor, cause the processor to implement the compressor frequency modulation control method of the above-mentioned heat pump system.

[0014] This invention brings the following beneficial effects:

[0015] The compressor frequency regulation control method, device, equipment, and storage medium of the aforementioned heat pump system acquire the operating mode, inlet water temperature, target temperature, and ambient temperature of the heat pump system; wherein, the operating mode includes heating mode, energy-saving mode, and silent mode; based on the inlet water temperature and target temperature, the temperature difference and the corresponding temperature difference range are determined; based on the operating mode, the corresponding temperature difference range, and the ambient temperature, the target operating frequency is determined; and the operating state of the compressor in the heat pump system is controlled according to the target operating frequency.

[0016] In this method, the operating frequency of the heat pump system compressor is adjusted based on three different operating modules, combined with ambient temperature, inlet water temperature and target temperature. The operating state of the compressor is controlled according to the adjusted operating frequency. The operating strategy can be flexibly switched according to user needs, and dynamic frequency adjustment can be achieved in combination with ambient temperature, which meets the needs of users in different scenarios and achieves a balance between performance and energy efficiency.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A flowchart of a compressor frequency regulation control method for a heat pump system provided in an embodiment of the present invention;

[0021] Figure 2 A flowchart for determining the target operating frequency based on different operating modes provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a compressor frequency regulation control device for a heat pump system provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a compressor frequency regulation control device for a heat pump system provided in an embodiment of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Heat pumps typically contain a compressor, and by controlling the operating frequency of the compressor, water temperature can be heated.

[0026] In related technologies, heat pumps mostly use fixed control logic or single control parameters to control the compressor under different load requirements and usage scenarios. For example, when running at night or under medium and low loads, the compressor is controlled to maintain a high operating frequency, resulting in energy waste and noise pollution. However, at lower operating frequencies, the water temperature fluctuates greatly and heating is slow, making it difficult to balance performance, energy efficiency and user experience.

[0027] In addition, some current products lack coordinated control over factors such as ambient temperature and user preset modes, as well as intelligent and adaptive adjustment capabilities.

[0028] Based on this, the compressor frequency regulation control method, device, equipment and storage medium of the heat pump system provided by the embodiments of the present invention can be applied to the compressor of the heat pump system, especially in the scenario of dynamic frequency regulation of the compressor of the heat pump system.

[0029] The present invention discloses a compressor frequency regulation control method for a heat pump system, such as... Figure 1 As shown, the compressor frequency regulation control method of this heat pump system includes the following steps:

[0030] Step S102: Obtain the operating mode, inlet water temperature, target temperature, and ambient temperature of the heat pump system; wherein, the operating mode includes heating mode, energy-saving mode, and silent mode.

[0031] In one implementation, when the heat pump system is running, the user can switch between three operating modes, such as heating mode, energy-saving mode, and silent mode.

[0032] The heating mode described above is used in scenarios where the water temperature rises rapidly. Under high-load conditions of rapid heating, the compressor always maintains a 100% operating frequency. Here, there is no need to consider the inlet water temperature, target temperature, or ambient temperature.

[0033] The aforementioned energy-saving mode is used in scenarios where energy efficiency is prioritized, such as when there is ample time for water temperature to rise. Under medium-load conditions prioritizing energy efficiency, the compressor undergoes tiered frequency regulation control based on the inlet water temperature, target temperature, and ambient temperature. In energy-saving mode, the compressor unit in the heat pump system exhibits a higher COP (Coefficient of Performance).

[0034] The aforementioned silent mode is used in scenarios where quiet operation is prioritized, such as when the target water temperature and the actual water temperature are close, or for noise-sensitive nighttime conditions. Under low-load conditions with quiet operation as the priority, the compressor operation is controlled by combining the inlet water temperature, target temperature, and ambient temperature. At this time, the compressor's operating frequency is usually low.

[0035] Understandably, in energy-saving and silent modes, ambient temperature can affect the compressor's operating frequency, thus requiring adaptive adjustment of the operating frequency.

[0036] Step S104: Based on the inlet water temperature and the target temperature, determine the temperature difference and the corresponding temperature difference range;

[0037] In one implementation, the current inlet water temperature and target temperature are obtained in the heat pump system. The difference between the inlet water temperature and the target temperature is calculated to obtain the temperature difference between the inlet water temperature and the target temperature. Here, multiple temperature difference ranges can be preset. Different temperature difference ranges can be understood as preset different levels. Each temperature difference range has a reference temperature difference, which is usually the upper limit of the temperature difference range. The corresponding temperature difference range is determined based on the temperature difference.

[0038] For example, multiple temperature difference ranges are preset, with a reference temperature difference of 0.5 between every two temperature difference ranges. For example, the reference temperature differences are 1.5, 1, 0.5, 0, -0.5, ..., -3.5, -4, and the corresponding temperature difference ranges are [1.5, 1], [1, 0.5], [0.5, 0], [0, -0.5], ..., [-3.5, -4]. The difference between the inlet water temperature and the target temperature is calculated to obtain the temperature difference ΔT, and the corresponding temperature difference range is determined based on the temperature difference ΔT.

[0039] Step S106: Determine the target operating frequency based on the operating mode, the temperature difference range corresponding to the temperature difference, and the ambient temperature;

[0040] In one implementation, the current operating mode is determined. If the operating mode is heating mode, then there is no need to consider the ambient temperature. The target operating frequency can be determined based on the temperature difference range corresponding to the temperature difference. For example, the first frequency range is determined based on the temperature difference range, and then the target operating frequency is determined.

[0041] If the operating mode is either energy-saving or silent mode, the target operating frequency needs to be determined by considering the ambient temperature and the corresponding temperature difference range. Here, for the same temperature difference range, the target operating frequency can be different or the same if the ambient temperature is different; similarly, for the same ambient temperature, the target operating frequency can be different or the same if the temperature difference range is different. Generally, the target operating frequency for silent mode is lower than that for energy-saving mode.

[0042] The above method, by linking with the ambient temperature, can adopt different operating frequency output strategies when the ambient temperature is too high or too low.

[0043] Step S108: Control the operating status of the compressor in the heat pump system according to the target operating frequency.

[0044] For example, after obtaining the target operating frequency, the compressor in the heat pump system is controlled to stop or start according to the target operating frequency. After the compressor has run for a preset duration according to the target operating frequency, it can be adjusted by one level, such as increasing or decreasing the target operating frequency by 5%; so that the compressor maintains an operating frequency for a shorter period of time, avoiding frequent switching when the actual water temperature is close to the target temperature.

[0045] The compressor frequency control method of the above-mentioned heat pump system obtains the operating mode, inlet water temperature, target temperature, and ambient temperature of the heat pump system; wherein, the operating mode includes heating mode, energy-saving mode, and silent mode; based on the inlet water temperature and target temperature, the temperature difference and the corresponding temperature difference range are determined; based on the operating mode, the corresponding temperature difference range, and the ambient temperature, the target operating frequency is determined; and the operating state of the compressor in the heat pump system is controlled according to the target operating frequency.

[0046] In this method, the operating frequency of the heat pump system compressor is adjusted based on three different operating modules, combined with ambient temperature, inlet water temperature and target temperature. The operating state of the compressor is controlled according to the adjusted operating frequency. The operating strategy can be flexibly switched according to user needs, and dynamic frequency adjustment can be achieved in combination with ambient temperature, which meets the needs of users in different scenarios and achieves a balance between performance and energy efficiency.

[0047] In one implementation, the system has multiple preset temperature difference ranges; different temperature difference ranges can be understood as preset different levels, and each temperature difference range has a reference temperature difference, which is usually the upper limit of the temperature difference range; the temperature difference ranges correspond to preset operating frequencies, and the operating frequencies corresponding to different temperature difference ranges can be the same or different.

[0048] Specifically, the target operating frequency is determined based on the operating mode, the temperature difference range corresponding to the temperature difference, and the ambient temperature, including the following steps:

[0049] Step S202: If the operating mode is heating mode, then determine the first target operating frequency based on the heating mode and the temperature difference range;

[0050] For example, if the operating mode is heating mode, then multiple temperature ranges corresponding to the heating mode are obtained, the first target temperature range corresponding to the temperature difference is determined, and then the first target operating frequency of the compressor is determined based on the first target temperature range.

[0051] Step S204: If the operating mode is energy-saving mode, then determine the second target operating frequency based on the energy-saving mode, temperature difference range, and ambient temperature.

[0052] For example, if the operating mode is energy-saving mode, then multiple temperature ranges corresponding to the energy-saving mode are obtained, and the second target temperature range corresponding to the temperature difference is determined. Then, based on the second target temperature range and the comparison result between the ambient temperature and the ambient temperature threshold, the second target operating frequency of the compressor is determined.

[0053] Step S206: If the operating mode is silent mode, then the third target operating frequency is determined based on the silent mode, temperature difference range and ambient temperature.

[0054] For example, if the operating mode is silent mode, then multiple temperature ranges corresponding to silent mode are obtained, and the third target temperature range corresponding to the temperature difference is determined. Then, based on the third target temperature range and the comparison result between the ambient temperature and the ambient temperature threshold, the third target operating frequency of the compressor is determined.

[0055] Furthermore, based on the energy-saving mode and temperature difference, a first temperature difference range is determined; when the ambient temperature is greater than the ambient temperature threshold, a first target minimum operating frequency is determined based on the first temperature difference range; the first target minimum operating frequency is determined as the second target operating frequency; when the ambient temperature is less than or equal to the ambient temperature threshold, a first target maximum operating frequency is determined based on the first temperature difference range; the first target maximum operating frequency is determined as the second target operating frequency.

[0056] This ambient temperature threshold is usually preset, such as 15°C.

[0057] For example, if the current operating mode is energy-saving mode and the temperature difference is 0.2, the first temperature difference range is determined as [0, 0.5] based on the temperature difference. After comparing the ambient temperature with the ambient temperature threshold of 15℃, if the ambient temperature is greater than the ambient temperature threshold, the first target minimum operating frequency is determined in the first temperature difference range, and then the first target minimum operating frequency is determined as the second target operating frequency. If the ambient temperature is less than or equal to the ambient temperature threshold, the first target maximum operating frequency is determined in the first temperature difference range, and then the first target maximum operating frequency is determined as the second target operating frequency.

[0058] Understandably, if the first temperature difference range corresponds to several operating frequencies, then the first target minimum operating frequency and the first target maximum operating frequency are usually different; of course, if the first temperature difference range corresponds to only one operating frequency, then the first target minimum operating frequency and the first target maximum operating frequency can also be the same.

[0059] Furthermore, based on the silent mode and temperature difference, a second temperature difference range is determined; when the ambient temperature is greater than the ambient temperature threshold, a second target minimum operating frequency is determined based on the second temperature difference range; the second target minimum operating frequency is determined as the third target operating frequency; when the ambient temperature is less than or equal to the ambient temperature threshold, a second target maximum operating frequency is determined based on the second temperature difference range; the second target maximum operating frequency is determined as the third target operating frequency.

[0060] For example, if the current operating mode is silent mode and the temperature difference is -2.1, the second temperature difference range is determined to be [-2, -2.5]. After comparing the ambient temperature with the ambient temperature threshold of 15℃, if the ambient temperature is greater than the ambient temperature threshold, the second target minimum operating frequency is determined in the first temperature difference range, and then the second target minimum operating frequency is determined as the third target operating frequency. If the ambient temperature is less than or equal to the ambient temperature threshold, the second target maximum operating frequency is determined in the second temperature difference range, and then the second target maximum operating frequency is determined as the third target operating frequency.

[0061] Understandably, if the second temperature difference range corresponds to several operating frequencies, then the minimum operating frequency of the second target and the maximum operating frequency of the second target are usually different; of course, if the second temperature difference range corresponds to only one operating frequency, then the minimum operating frequency of the second target and the maximum operating frequency of the second target can also be the same.

[0062] In one implementation, if the target operating frequency is zero, the compressor is controlled to stop; if the target operating frequency is greater than zero, the compressor is controlled to operate at the target operating frequency.

[0063] For example, if the target operating frequency is determined to be zero based on the temperature difference range corresponding to the temperature difference, then the compressor of the heat pump system will be shut down.

[0064] If the target operating frequency is determined to be greater than zero, then the operating frequency of the compressor in the heat pump system is adjusted according to the target operating frequency, and the compressor is controlled to operate at the target operating frequency.

[0065] In one implementation, the operating time of the compressor at the target operating frequency is determined; when the operating time reaches the operating time threshold, the target operating frequency is adjusted to a preset adjustment frequency at most once.

[0066] In one example, the runtime threshold is 5 minutes, and the preset adjustment frequency is 5%. When the runtime reaches the runtime threshold, the target runtime frequency will be adjusted to a level at most once. There is a preset adjustment frequency between every two levels. For example, every 5 minutes, the target runtime frequency will be increased or decreased by 5% at most once.

[0067] At each target operating frequency, the principle of "shortest maintenance time and maximum frequency limitation" is maintained to ensure that the heat pump system operates stably when the actual temperature difference is close to the target temperature, and to avoid frequent switching.

[0068] In one implementation, a first calculation result is obtained by adding the target temperature and the preset hysteresis temperature; if the inlet water temperature is greater than or equal to the first calculation result and is maintained for a preset duration, the compressor is controlled to stop; a second calculation result is obtained by calculating the difference between the target temperature and the hysteresis temperature; if the actual water temperature drops to the second calculation result, the compressor is controlled to restart according to the operating mode.

[0069] The hysteresis temperature is different from the aforementioned temperature difference. The temperature difference is a variable that is related to the inlet water temperature, while the hysteresis temperature is a preset parameter value, such as 2℃.

[0070] In one example, the target temperature (e.g., 28°C) and the preset hysteresis temperature are summed to obtain the first calculation result, such as 30°C. If the inlet water temperature is greater than or equal to the first calculation result and is maintained for a preset duration, such as 10 minutes, then the compressor is controlled to stop, that is, the compressor's operating frequency is zero.

[0071] After the compressor stops, the second calculation result is obtained by calculating the difference between the target temperature and the hysteresis temperature, such as 26℃. If the actual water temperature drops below the second calculation result, then the compressor is restarted according to the current operating mode and runs at the target operating frequency.

[0072] In one specific embodiment, the compressor frequency regulation control method of the heat pump system is implemented according to the data in Table 1 below:

[0073] Table 1

[0074]

[0075] Specifically, after obtaining the target temperature, inlet water temperature, temperature difference range corresponding to the temperature difference, operating mode, and ambient temperature, the target operating frequency can be determined based on the target temperature, inlet water temperature, reference temperature difference, compressor frequency, operating mode, and ambient temperature in Table 1 above, and the compressor can be controlled to operate at the target operating frequency.

[0076] The above embodiments of this application have the following advantages:

[0077] 1) Flexible response: It can adapt to different user needs and scenarios, such as fast heating, energy saving, and quiet operation;

[0078] 2) Significant energy saving: Through frequency-level control and ambient temperature compensation strategies, the system's COP (Coefficient of Performance) is improved, which is the energy efficiency ratio of cooling capacity to input power.

[0079] 3) Silent mode optimization: In silent mode, the highest frequency is limited in stages to effectively reduce operating noise.

[0080] The present invention discloses a compressor frequency regulation control device for a heat pump system, such as... Figure 3 As shown, it includes:

[0081] The acquisition module 31 is used to acquire the operating mode, inlet water temperature, target temperature, and ambient temperature of the heat pump system; wherein the operating mode includes heating mode, energy-saving mode, and silent mode.

[0082] The first determining module 32 is used to determine the temperature difference and the temperature difference range corresponding to the temperature difference based on the inlet water temperature and the target temperature.

[0083] The second determining module 33 is used to determine the target operating frequency based on the operating mode, the temperature difference range corresponding to the temperature difference, and the ambient temperature.

[0084] The control module 34 is used to control the operating status of the compressor in the heat pump system according to the target operating frequency.

[0085] The compressor frequency control device of the aforementioned heat pump system acquires the operating mode, inlet water temperature, target temperature, and ambient temperature of the heat pump system. The operating modes include heating mode, energy-saving mode, and silent mode. Based on the inlet water temperature and target temperature, it determines the temperature difference and the corresponding temperature difference range. Based on the operating mode, the corresponding temperature difference range, and the ambient temperature, it determines the target operating frequency. According to the target operating frequency, it controls the operating status of the compressor in the heat pump system.

[0086] In this method, the operating frequency of the heat pump system compressor is adjusted based on three different operating modules, combined with ambient temperature, inlet water temperature and target temperature. The operating state of the compressor is controlled according to the adjusted operating frequency. The operating strategy can be flexibly switched according to user needs, and dynamic frequency adjustment can be achieved in combination with ambient temperature, which meets the needs of users in different scenarios and achieves a balance between performance and energy efficiency.

[0087] The above system has multiple preset temperature difference ranges; the second determining module is also used to: if the operating mode is heating mode, determine a first target operating frequency based on the heating mode and the temperature difference range; if the operating mode is energy-saving mode, determine a second target operating frequency based on the energy-saving mode, the temperature difference range and the ambient temperature; if the operating mode is silent mode, determine a third target operating frequency based on the silent mode, the temperature difference range and the ambient temperature.

[0088] The second determining module is further configured to: determine a first temperature difference range based on the energy-saving mode and the temperature difference; when the ambient temperature is greater than the ambient temperature threshold, determine a first target minimum operating frequency based on the first temperature difference range; determine the first target minimum operating frequency as a second target operating frequency; when the ambient temperature is less than or equal to the ambient temperature threshold, determine a first target maximum operating frequency based on the first temperature difference range; and determine the first target maximum operating frequency as the second target operating frequency.

[0089] The aforementioned second determining module is further configured to: determine a second temperature difference range based on the silent mode and the temperature difference; when the ambient temperature is greater than the ambient temperature threshold, determine a second target minimum operating frequency based on the second temperature difference range; determine the second target minimum operating frequency as a third target operating frequency; when the ambient temperature is less than or equal to the ambient temperature threshold, determine a second target maximum operating frequency based on the second temperature difference range; and determine the second target maximum operating frequency as a third target operating frequency.

[0090] The second determining module is further configured to: control the compressor to stop if the target operating frequency is equal to zero; and control the compressor to operate at the target operating frequency if the target operating frequency is greater than zero.

[0091] The aforementioned device also includes a holding and adjustment module, used to: determine the operating time of the compressor at the target operating frequency; and when the operating time reaches the operating time threshold, adjust the target operating frequency to a preset adjustment frequency at most once.

[0092] The aforementioned device also includes a constant temperature shutdown module, used for: determining a first calculation result obtained by adding the target temperature and a preset hysteresis temperature; if the inlet water temperature is greater than or equal to the first calculation result and is maintained for a preset duration, then controlling the compressor to shut down; determining a second calculation result obtained by performing a difference calculation on the target temperature and the hysteresis temperature; if the actual water temperature drops to the second calculation result, then controlling the compressor to restart according to the operating mode.

[0093] This embodiment also provides a compressor frequency regulation control device for a heat pump system, including a processor and a memory. The memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the compressor frequency regulation control method of the heat pump system described above.

[0094] See Figure 4 As shown, the compressor frequency control device of the heat pump system includes a processor 100 and a memory 101. The memory 101 stores computer-executable instructions that can be executed by the processor 100. The processor 100 executes the computer-executable instructions to implement the compressor frequency control method of the heat pump system described above.

[0095] Furthermore, Figure 4 The compressor frequency control device of the heat pump system shown also includes a bus 102 and a communication interface 103. The processor 100, the communication interface 103 and the memory 101 are connected through the bus 102.

[0096] The memory 101 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one communication interface 103 (which can be wired or wireless), such as the Internet, wide area network, local area network, or metropolitan area network. The bus 102 may be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 4 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0097] Processor 100 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of processor 100 or by instructions in software form. Processor 100 may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this invention can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software module can reside in a readily available storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 101, and the processor 100 reads the information from memory 101 and, in conjunction with its hardware, completes the steps of the method described in the foregoing embodiments.

[0098] This embodiment also provides a computer-readable storage medium storing computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions cause the processor to implement the compressor frequency regulation control method of the above-mentioned heat pump system.

[0099] The computer program product of the compressor frequency regulation control method, apparatus, device and storage medium of the heat pump system provided in the embodiments of the present invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods described in the preceding method embodiments. For specific implementation, please refer to the method embodiments, which will not be repeated here.

[0100] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0101] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0102] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0103] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0104] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A compressor frequency regulation control method for a heat pump system, characterized in that, The method includes: The operating mode, inlet water temperature, target temperature, and ambient temperature of the heat pump system are obtained; wherein the operating mode includes heating mode, energy-saving mode, and silent mode. Based on the inlet water temperature and the target temperature, the temperature difference and the temperature difference range corresponding to the temperature difference are determined; Based on the operating mode, the temperature difference range corresponding to the temperature difference, and the ambient temperature, the target operating frequency is determined; The operating state of the compressor in the heat pump system is controlled according to the target operating frequency.

2. The compressor frequency regulation control method for a heat pump system according to claim 1, characterized in that, The system has multiple preset temperature difference ranges; Based on the operating mode, the temperature difference range corresponding to the temperature difference, and the ambient temperature, the target operating frequency is determined, including: If the operating mode is the heating mode, then the first target operating frequency is determined based on the heating mode and the temperature difference range; If the operating mode is the energy-saving mode, then the second target operating frequency is determined based on the energy-saving mode, the temperature difference range, and the ambient temperature. If the operating mode is the silent mode, then the third target operating frequency is determined based on the silent mode, the temperature difference range, and the ambient temperature.

3. The compressor frequency regulation control method for a heat pump system according to claim 2, characterized in that, Based on the energy-saving mode, the temperature difference range, and the ambient temperature, the second target operating frequency is determined, including: Based on the energy-saving mode and the temperature difference, a first temperature difference range is determined; When the ambient temperature is greater than the ambient temperature threshold, a first target minimum operating frequency is determined based on the first temperature difference range; the first target minimum operating frequency is then determined as the second target operating frequency. When the ambient temperature is less than or equal to the ambient temperature threshold, a first target maximum operating frequency is determined based on the first temperature difference range; the first target maximum operating frequency is then determined as the second target operating frequency.

4. The compressor frequency regulation control method for a heat pump system according to claim 2, characterized in that, Based on the silent mode, the temperature difference range, and the ambient temperature, the third target operating frequency is determined, including: Based on the silent mode and the temperature difference, a second temperature difference range is determined; When the ambient temperature is greater than the ambient temperature threshold, a second target minimum operating frequency is determined based on the second temperature difference range; the second target minimum operating frequency is then determined as the third target operating frequency. When the ambient temperature is less than or equal to the ambient temperature threshold, the second target maximum operating frequency is determined based on the second temperature difference range; the second target maximum operating frequency is then determined as the third target operating frequency.

5. The compressor frequency regulation control method for a heat pump system according to claim 1, characterized in that, Controlling the operating state of the compressor in the heat pump system according to the target operating frequency includes: If the target operating frequency is zero, then control the compressor to stop; If the target operating frequency is greater than zero, then the compressor is controlled to operate at the target operating frequency.

6. The compressor frequency regulation control method for a heat pump system according to claim 1, characterized in that, The method further includes: Determine the operating time of the compressor at the target operating frequency; When the runtime reaches the runtime threshold, the target runtime frequency will be adjusted to a preset adjustment frequency at most once.

7. The compressor frequency regulation control method for a heat pump system according to claim 1, characterized in that, After controlling the operating state of the compressor in the heat pump system according to the target operating frequency, the method further includes: The first calculation result is obtained by adding the target temperature and the preset hysteresis temperature; if the inlet water temperature is greater than or equal to the first calculation result and is maintained for a preset duration, the compressor is controlled to stop. The second calculation result is obtained by performing a difference calculation between the target temperature and the hysteresis temperature; if the actual water temperature drops to the second calculation result, the compressor is restarted according to the operating mode.

8. A compressor frequency regulation control device for a swimming pool heat pump system, characterized in that, The device includes: The acquisition module is used to acquire the operating mode, inlet water temperature, target temperature, and ambient temperature of the heat pump system; wherein, the operating mode includes heating mode, energy-saving mode, and silent mode; The first determining module is used to determine the temperature difference and the temperature difference range corresponding to the temperature difference based on the inlet water temperature and the target temperature. The second determining module is used to determine the target operating frequency based on the operating mode, the temperature difference range corresponding to the temperature difference, and the ambient temperature. The control module is used to control the operating status of the compressor in the heat pump system according to the target operating frequency.

9. A compressor frequency regulation control device for a heat pump system, characterized in that, The system includes a processor and a memory, the memory storing computer-executable instructions that can be executed by the processor, the processor executing the computer-executable instructions to implement the compressor frequency regulation control method of the heat pump system according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when invoked and executed by a processor, cause the processor to implement the compressor frequency regulation control method of the heat pump system according to any one of claims 1-7.

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