Heat pump preheating control method and device, air source heat pump and computer readable storage medium

Abstract

Embodiments of the present application provide a heat pump preheating control method and device, an air source heat pump and a computer readable storage medium. The heat pump preheating control method, the heat pump comprising a compressor and a preheating module, the heat pump preheating control method comprising: in response to the heat pump receiving a start-up instruction, determining whether a compressor start-up condition is met; in response to determining that the compressor start-up condition is not met, performing a cyclic preheating operation until the compressor eliminates a start-up failure; the cyclic preheating operation comprising: controlling the compressor to remain stopped or stop starting, and controlling the preheating module to preheat the compressor; controlling the compressor to start, and determining whether the compressor has a start-up failure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat pumps, in particular to a heat pump preheating control method and device, an air source heat pump and a computer readable storage medium. BACKGROUND

[0002] Low temperature air source heat pump (LT-ASHP) is an energy-saving device that uses low-grade energy in the environment to convert low-grade heat into high-grade heat through the principle of reverse Carnot cycle. Low temperature air source heat pump is widely used in heating, hot water supply and other fields, and is particularly suitable for working in low temperature environments such as below -15℃, and has the advantages of high efficiency, environmental protection, economy, etc. In related technologies, when the low temperature air source heat pump starts in a low temperature environment, the compressor may fail to start normally, which may cause serious problems such as damage to the structure of the compressor. SUMMARY

[0003] The embodiments of the present application provide a heat pump preheating control method and device, an air source heat pump and a computer readable storage medium, which can preheat the compressor when the heat pump starts, eliminate the starting failure of the compressor, and ensure the safety and reliability of the compressor when starting.

[0004] In a first aspect, the embodiments of the present application provide a heat pump preheating control method, the heat pump comprising a compressor and a preheating module, the heat pump preheating control method comprising: in response to the heat pump receiving a start instruction, determining whether the compressor startup condition is met; in response to determining that the compressor startup condition is not met, performing a cycle preheating operation until the compressor eliminates the starting failure; the cycle preheating operation comprising: controlling the compressor to remain stopped or stop starting, and controlling the preheating module to preheat the compressor; controlling the compressor to start, and determining whether the compressor has a starting failure.

[0005] In some embodiments, the heat pump comprises a circulating water pump and an auxiliary heat source, the circulating water pump being used to drive the circulation of the refrigerant, and the auxiliary heat source being used to assist in heating the refrigerant; the heat pump preheating control method comprising: in response to determining that the compressor startup condition is not met, controlling the circulating water pump and the auxiliary heat source to start.

[0006] In some embodiments, the control of the preheating module to preheat the compressor comprises: determining a target preheating time for the current preheating according to the current preheating number; in response to the preheating module preheating the compressor for the first time, taking a first preset preheating time as the target preheating time for the current preheating; in response to the preheating module preheating the compressor for the second time, taking a second preset preheating time as the target preheating time for the current preheating; in response to the preheating module preheating the compressor for the i+1th time, determining the target preheating time for the current preheating according to the following formula:

[0007]

[0008] wherein t i is the target preheating time when the preheating module preheats the compressor for the ith time, t i+1 is the target preheating time when the preheating module preheats the compressor for the i+1th time, and i is a positive integer greater than 1.

[0009] In some embodiments, after the compressor eliminates the start-up failure, the heat pump preheating control method comprises: obtaining the preheating number of the cycle preheating operation, the preheating time of each preheating, and the outdoor environment temperature; updating the first preset preheating time according to the preheating number of the cycle preheating operation, the preheating time of each preheating, and the outdoor environment temperature, the first preset preheating time being the target preheating time for the first preheating.

[0010] In some embodiments, the control of the preheating module to preheat the compressor comprises: in response to the preheating module preheating the compressor for the first time, determining whether a preheating stopping condition is met; in response to determining that the preheating stopping condition is met, controlling the preheating module to stop preheating; the preheating stopping condition comprises at least one of the following conditions: the actual preheating time reaches the target preheating time for the current preheating; the exhaust temperature of the compressor is greater than a second exhaust temperature threshold; the exhaust temperature of the compressor is greater than a third exhaust temperature threshold; the outdoor environment temperature is greater than or equal to a second outdoor temperature threshold; wherein the second exhaust temperature threshold is a preset value; the third exhaust temperature threshold is determined according to the outdoor environment temperature.

[0011] In some embodiments, determining whether the compressor start condition is met comprises: obtaining an outdoor ambient temperature and an exhaust temperature of the compressor, and determining a first exhaust temperature threshold according to the outdoor ambient temperature; determining whether the outdoor ambient temperature is less than a first outdoor ring temperature threshold and whether the exhaust temperature is less than the first exhaust temperature threshold; in response to determining that the outdoor ambient temperature is less than the first outdoor ring temperature threshold and the exhaust temperature is less than the first exhaust temperature threshold, determining that the compressor start condition is not met; and in response to determining that the outdoor ambient temperature is greater than or equal to the first outdoor ring temperature threshold and / or the exhaust temperature is greater than or equal to the first exhaust temperature threshold, determining that the compressor start condition is met.

[0012] In some embodiments, controlling the preheating module to preheat the compressor comprises: determining a preheating power of the preheating module according to an outdoor ambient temperature; and controlling the preheating module to preheat according to the preheating power.

[0013] In a second aspect, the embodiments of the present application provide a heat pump preheating control device, comprising: a trial start control circuit configured to determine whether a compressor start condition is met; and a preheating control circuit configured to perform a cyclic preheating operation until the compressor eliminates a start failure; the cyclic preheating operation comprises: controlling the compressor to remain stopped or stop starting, and controlling the preheating module to preheat the compressor; and controlling the compressor to start, and determining whether the compressor has a start failure.

[0014] In a third aspect, the embodiments of the present application provide an air source heat pump, comprising: a compressor; a preheating module configured to preheat the compressor; a memory storing a computer program; and a processor, the computer program being executed by the processor to implement the heat pump preheating control method according to any one of the above embodiments.

[0015] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to perform the steps of the heat pump preheating control method described above.

[0016] The heat pump preheating control method provided by the embodiments of the present application first determines whether the compressor start condition is met when the heat pump receives a start instruction, and performs a cyclic preheating operation when it is determined that the compressor start condition is not met, so as to preheat the compressor one time or multiple times according to the actual working condition of the compressor by using the preheating module until the compressor eliminates the start failure. In this way, on the one hand, the compressor can be preheated when necessary to ensure that the compressor is reliably started in a safe state after preheating, and on the other hand, the time required in the preheating stage can be greatly compressed to improve the response speed of the heat pump start and meet the user's need for starting use in a timely manner. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 is a flow chart of the heat pump preheating control method provided by some embodiments of the present application;

[0019] Figure 2 is a partial flow chart of the heat pump preheating control method provided by some embodiments of the present application;

[0020] Figure 3 is another partial flow chart of the heat pump preheating control method provided by some embodiments of the present application;

[0021] Figure 4 is still another partial flow chart of the heat pump preheating control method provided by some embodiments of the present application;

[0022] Figure 5 is still another partial flow chart of the heat pump preheating control method provided by some embodiments of the present application;

[0023] Figure 6 is still another partial flow chart of the heat pump preheating control method provided by some embodiments of the present application;

[0024] Figure 7 is still another partial flow chart of the heat pump preheating control method provided by some embodiments of the present application;

[0025] Figure 8 is a structure diagram of an air source heat pump provided by some embodiments of the present application.

[0026] Main element symbol explanation:

[0027] 1-air source heat pump, 10-processor, 20-memory. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are intended to refer to the orientation or position as shown in the accompanying drawings, and are used only for convenience in describing the present application and simplifying the description, and are not intended to indicate or imply that a device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second", are used only for descriptive purposes and are not used to indicate or imply relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise expressly specified.

[0030] "A and / or B" includes the following three combinations: only A, only B, and a combination of A and B.

[0031] The use of "adapted to" or "configured to" in the present application means open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps. In addition, the use of "based on" means open and inclusive, as a process, step, calculation or other action "based on" one or more stated conditions or values can be based on additional conditions or values beyond those stated in practice.

[0032] In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation described as "exemplary" in the present application is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the present application. In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present application. It should be appreciated that one skilled in the art can realize

[0033] As Figure 1As shown, in the first aspect, the embodiments of the present application provide a heat pump preheating control method for controlling a heat pump. The heat pump can be an air source heat pump 1, which includes a compressor and a preheating module. The preheating module is configured to preheat the compressor; the type of the preheating module can be determined according to actual needs, and can be, for example, a winding coil built in the compressor, an external heating source arranged outside the compressor, etc., which is not limited in the embodiments of the present application.

[0034] Here, the heat pump preheating control method includes S10-S30, which can preheat the compressor in a cycle when the heat pump is started, eliminate the start-up failure of the compressor, and ensure the safety and reliability of the compressor when starting.

[0035] S10: In response to the heat pump receiving a start-up instruction, it is determined whether the compressor start-up condition is met.

[0036] In some embodiments, the start-up instruction can be directly input to the heat pump by a user through an interactive terminal such as a switch button, a remote controller, an application program on a smart terminal, etc. In other embodiments, the start-up instruction can be automatically generated by the control system of the heat pump; for example, after the heat pump stops running, if the heat pump restart conditions such as reaching the restart time, the refrigerant temperature being lower than the restart threshold, etc. are met, the control system of the heat pump can generate a start-up instruction to control the heat pump to restart.

[0037] After receiving the start-up instruction, the heat pump will not directly start up, but needs to first determine whether the compressor start-up condition is met. The specific way of determining whether the compressor start-up condition is met can be determined according to actual needs, which is not limited in the embodiments of the present application.

[0038] S20: In response to determining that the compressor start-up condition is not met, a cycle preheating operation is performed until the compressor eliminates the start-up failure. Here, the cycle preheating operation includes S21-S22.

[0039] S21: The compressor is controlled to remain stopped or stop starting, and the preheating module is controlled to preheat the compressor.

[0040] Here, if the compressor is still in the stopped state, the compressor is controlled to remain stopped; if the compressor is in the starting state, the compressor is controlled to stop starting. At the same time, the preheating module is controlled to preheat the compressor to increase the temperature of the refrigerant in the compressor.

[0041] S22: The compressor is controlled to start, and it is determined whether the compressor has a start-up failure.

[0042] After the preheating module completes one preheating of the compressor, the compressor can be controlled to start, and whether a start failure occurs to the compressor during the starting process is determined. Here, the start failure can include types of failure phenomena such as current protection of the compressor, step-out of the compressor, and the like, which are not limited by the embodiments of the present application. When it is determined that a start failure occurs to the compressor, S21-S22 are executed again, that is, the compressor is controlled to stop starting, and the preheating module is controlled to preheat the compressor again. When it is determined that no start failure occurs to the compressor, the compressor can be controlled to continue starting, so that the heat pump is operated to meet the use needs of the user. According to actual working conditions, the preheating module preheats the compressor at least once in one cycle preheating operation.

[0043] S30: In response to determining that the compressor start condition is met, the compressor is controlled to start. When it is determined that the compressor start condition is met, it can be determined that there is no safety risk, and the compressor can be controlled to start, so that the heat pump is operated to meet the use needs of the user.

[0044] Compared with the related art, the heat pump preheating control method provided by the embodiments of the present application first determines whether the compressor start condition is met when the heat pump receives a start instruction, and performs a cycle preheating operation when it is determined that the compressor start condition is not met, so that the preheating module preheats the compressor according to the actual working conditions of the compressor, one time or multiple times, until the start failure of the compressor is eliminated. In this way, on the one hand, the compressor can be preheated when necessary to ensure that the compressor is reliably started in a safe state after preheating, and on the other hand, the time required in the preheating stage can be greatly compressed to improve the response speed of the start of the heat pump, and the use needs of the user for starting are met in a timely manner.

[0045] In some embodiments, the heat pump includes a circulating water pump and an auxiliary heat source; the circulating water pump is used to drive the circulating flow of the refrigerant, and the auxiliary heat source is used to assist in heating the refrigerant. The type of the auxiliary heat source can be determined according to actual needs, and types such as electric auxiliary heating and the like can be used, which are not limited by the embodiments of the present application; for example, the heat pump can include a buffer water tank connected to the refrigerant circuit through the circulating water pump and the circulating refrigerant pipeline, and the auxiliary heat source is used to heat the refrigerant in the buffer water tank when starting. As shown in Figure 2 The heat pump preheating control method can include S40.

[0046] S40: In response to determining that the compressor start condition is not met, the circulating water pump and the auxiliary heat source are controlled to start.

[0047] When it is determined that the compressor start condition is not met, a circulating preheating operation needs to be performed first to preheat the compressor; at this time, the circulating water pump and the auxiliary heat source can be controlled to start, the auxiliary heat source is used to assist in heating the cold carrier, and the circulating water pump is used to deliver the heated cold carrier to the heat utilization terminal such as a hot water faucet / shower, heating sheet, etc., so as to quickly meet the heat utilization needs of the user. Further, after the compressor is started to make the heat pump normally run for heating, the auxiliary heat source can be turned off to save energy.

[0048] By setting S40, the heat pump preheating control method provided by the embodiment of the present application can start the circulating water pump and the auxiliary heat source first when the compressor cannot be started temporarily, and the auxiliary heat source provides the required heat to the user to quickly meet the heat utilization needs of the user.

[0049] As shown in Figure 3 In some embodiments, S10 can include S11-S14.

[0050] S11: Obtain the outdoor environment temperature and the discharge temperature of the compressor, and determine a first discharge temperature threshold according to the outdoor environment temperature.

[0051] Here, the outdoor environment temperature can be measured in real time by a temperature sensor arranged on the outdoor side, or can be obtained from the local weather data published by a weather measurement unit, and the embodiment of the present application does not limit this. The discharge temperature of the compressor can be measured in real time by a temperature sensor arranged near the discharge port of the compressor. After obtaining the outdoor environment temperature, a first discharge temperature threshold corresponding to the outdoor environment temperature can be determined, which can be used as a mark for judging the high and low of the discharge temperature of the compressor.

[0052] S12: Determine whether the outdoor environment temperature is less than a first outdoor temperature threshold and whether the discharge temperature is less than a first discharge temperature threshold. Here, the first outdoor temperature threshold can be pre-set in the control system of the heat pump, and used as a mark for judging the high and low of the outdoor environment temperature.

[0053] S13: In response to determining that the outdoor environment temperature is less than the first outdoor temperature threshold and the discharge temperature is less than the first discharge temperature threshold, it is determined that the compressor start condition is not met.

[0054] When it is determined that the outdoor environment temperature is less than the first outdoor temperature threshold and the discharge temperature is less than the first discharge temperature threshold, it can be determined that the compressor is in a relatively severe outdoor low-temperature environment, and if the compressor is directly started, the compressor will face a high risk of start failure and fault, so it can be determined that the compressor start condition is not met.

[0055] S14: In response to determining that the outdoor ambient temperature is greater than or equal to the first external ambient temperature threshold and / or the exhaust temperature is greater than or equal to the first exhaust temperature threshold, determine that the compressor start-up conditions are met.

[0056] When the outdoor ambient temperature is determined to be greater than or equal to the first external ambient temperature threshold and / or the exhaust temperature is determined to be greater than or equal to the first exhaust temperature threshold, the compressor start-up conditions are determined to be met, and the compressor can be controlled to start directly.

[0057] By setting S11 to S14, it is possible to determine more accurately whether the compressor start-up conditions are met, and then accurately perform the cycle preheating operation when the compressor start-up conditions are not met, thereby eliminating the risk of compressor start-up failure in a timely manner.

[0058] like Figure 4 As shown, in some embodiments, S21 may include S2111 to S2114 to control the preheating module to preheat the compressor.

[0059] S2111: Determine the target preheating time for the current preheating cycle based on the current number of preheating cycles.

[0060] Here, the current preheating count refers to the sequence number of the preheating module's current preheating cycle since entering the cyclic heating operation. For example, if the preheating module has not preheated the compressor three times before performing the current preheating cycle since entering the cyclic heating operation, then the current preheating count is the first preheating cycle; if the preheating module has preheated the compressor three times before performing the current preheating cycle, then the current preheating count is the fourth preheating cycle; and so on. The target preheating time is the preheating operation time required for the preheating module to maintain during the current preheating cycle, and it is related to the current preheating count.

[0061] S2112: In response to the preheating module performing the first preheating of the compressor, the first preset preheating time is used as the target preheating time for the current preheating.

[0062] When the preheating module preheats the compressor for the first time, it can be determined that the current preheating count is 1, and the first preset preheating time can be used as the target preheating time for this preheating. Here, the first preset preheating time is a preset value set in the heat pump control system. The first preset preheating time corresponds to the first preheating and can be directly invoked when the current preheating count is 1.

[0063] S2113: In response to the preheating module preheating the compressor for the second time, the second preset preheating time is taken as the target preheating time of the current preheating.

[0064] When the preheating module preheats the compressor for the second time, it can be determined that the current preheating number is two, and then the second preset preheating time can be taken as the target preheating time of the current preheating. Here, the second preset preheating time is a preset value in the control system of the heat pump, and the second preset preheating time and the second preheating are correspondingly set, which can be directly called when the current preheating number is 2.

[0065] S2114: In response to the preheating module preheating the compressor for the i+1th time, the target preheating time of the current preheating is determined according to the following formula:

[0066]

[0067] Wherein, t i is the target preheating time when the preheating module preheats the compressor for the ith time, t i+1 is the target preheating time when the preheating module preheats the compressor for the i+1th time, and i is a positive integer greater than 1.

[0068] For example, according to the above formula, when the preheating module preheats the compressor for the third time, the target preheating time of the third preheating is 2t2; when the preheating module preheats the compressor for the fourth time, the target preheating time of the third preheating is 3t2; and so on, which will not be described here.

[0069] By setting S2111-S2114, the compressor can be preheated in cycles, and at least since the third preheating, the target preheating time of each preheating is gradually increased with the increase of the preheating number, and the target preheating time is adjusted according to the severity of the low temperature environment. Specifically, when the severity of the low temperature environment is lighter, the compressor can be quickly brought to the starting condition, and the time required in the preheating stage can be greatly compressed; when the severity of the low temperature environment is heavier, for example, in a deep low temperature state of-30℃, the target preheating time can be gradually increased to increase the preheating amount of the preheating module, and the reliable start of the compressor in the safe temperature range can be greatly ensured.

[0070] As shown in FIG. Figure 5 In some embodiments, after the compressor eliminates the starting failure, i.e., ends the cycle preheating operation, the heat pump preheating control method can include S51-S52.

[0071] S51: Obtain the preheating number of the cycle preheating operation, the preheating time of each preheating, and the outdoor environment temperature.

[0072] S52: Update the first preset preheating time based on the number of preheating cycles, the preheating time for each preheating cycle, and the outdoor ambient temperature. The first preset preheating time is the target preheating time for the first preheating cycle.

[0073] By setting S51 to S52, the first preset preheating time can be updated in a timely manner according to the actual working conditions and environmental parameters of the preheating cycle after each operation ends. This makes the updated first preset preheating time more accurately match the actual environment of the heat pump, so that the compressor can reach a safe start-up state with the shortest preheating time when the heat pump is turned on next time, thus taking into account both the start-up safety of the compressor and the timeliness of the preheating process.

[0074] like Figure 6 As shown, in some embodiments, S21 may include S2121 to S2122.

[0075] S2121: In response to the preheating module performing the first preheating of the compressor, determine whether the preheating stop condition is met.

[0076] S2122: In response to determining that the preheating stop condition is met, control the preheating module to stop preheating.

[0077] Here, the preheating stop condition includes at least one of the following: the actual preheating time reaches the target preheating time for this preheating cycle; the compressor exhaust temperature is greater than the second exhaust temperature threshold; the compressor exhaust temperature is greater than the third exhaust temperature threshold; the outdoor ambient temperature is greater than or equal to the second ambient temperature threshold. In other words, as long as any one of the above conditions is met, it can be determined that the preheating stop condition has been met, and the preheating module can be controlled to stop preheating.

[0078] The second exhaust temperature threshold is a preset value pre-set in the heat pump's control system; for example, the second exhaust temperature threshold is greater than the first exhaust temperature threshold. The third exhaust temperature threshold can be determined based on the outdoor ambient temperature, and the algorithm used to determine the third exhaust temperature threshold can be determined according to actual needs; this application embodiment does not limit this; for example, the third exhaust temperature threshold is greater than the first exhaust temperature threshold. Thus, it is possible to directly determine whether the preheating stop condition is met based on the second exhaust temperature threshold, or to determine the third exhaust temperature threshold based on the outdoor ambient temperature and then determine whether the preheating stop condition is met based on the third exhaust temperature threshold.

[0079] like Figure 7 As shown, in some embodiments, S21 may include S2131 to S2132.

[0080] S2131: Determine the preheating power of the preheating module based on the outdoor ambient temperature.

[0081] Here, a correspondence between the outdoor environment temperature and the preheating power of the preheating module can be established in advance in the control system of the heat pump, and different preheating powers can be set corresponding to different outdoor environment temperatures to meet the preheating amount needs under different outdoor environment temperatures. After the outdoor environment temperature is obtained, the preheating power corresponding to the outdoor environment temperature can be determined, so as to determine the preheating power of the preheating module.

[0082] In some examples, a plurality of outer ring temperature intervals successively and continuously distributed can be set in advance in the control system of the heat pump, and a corresponding preheating power value can be set for each outer ring temperature interval. With the gradual decrease of the outer ring temperature interval, the corresponding preheating power value can gradually increase, for example, increase in equal difference. For example, at least four outer ring temperature intervals successively and continuously distributed can be set, which are a first outer ring temperature interval less than a first outer ring temperature and greater than or equal to a second outer ring temperature, a second outer ring temperature interval less than the second outer ring temperature and greater than or equal to a third outer ring temperature, a third outer ring temperature interval less than the third outer ring temperature and greater than or equal to a fourth outer ring temperature, and a fourth outer ring temperature interval less than the fourth outer ring temperature, and the preheating power values corresponding to the first outer ring temperature interval to the fourth outer ring temperature interval increase in equal difference.

[0083] S2132: controlling the preheating module to preheat according to the preheating power.

[0084] By setting S2131-S2132, the preheating module can be more accurately controlled to preheat according to the required preheating power, which can effectively ensure the preheating efficiency of the compressor and avoid energy waste, and achieve better energy saving effect.

[0085] In a second aspect, the embodiments of the present application provide a heat pump preheating control device, which comprises: a trial start control circuit configured to determine whether the compressor start condition is met; a preheating control circuit configured to perform a cycle preheating operation until the compressor eliminates the start failure; the cycle preheating operation comprises: controlling the compressor to remain stopped or stopped to start, and controlling the preheating module to preheat the compressor; controlling the compressor to start, and determining whether the compressor has a start failure.

[0086] As shown in Figure 8 In a third aspect, the embodiments of the present application provide an air source heat pump 1, which comprises a compressor, a preheating module, a processor 10 and a memory 20. The preheating module is configured to preheat the compressor, and the type of the preheating module can be determined according to actual needs, which can be, for example, a winding coil built in the compressor, an external heating source arranged outside the compressor, etc., which is not limited by the embodiments of the present application. The memory 20 stores a computer program, and the computer program is executed by the processor 10 to realize the heat pump preheating control method provided by any of the above embodiments.

[0087] The processor 10 is connected to the memory 20 and can perform various actions and processes according to programs stored in the memory 20. Specifically, the processor 10 can be an integrated circuit chip with processing capability of signals. The processor 10 can be a general-purpose processor, 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, discrete hardware components, and can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor or the like, which can be of X86 architecture or ARM architecture.

[0088] The memory 20 can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. The non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, and not limitation, many forms of RAM can be used, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct rambus random access memory (DRRAM). It should be noted that the memory 20 of the method described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0089] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, which stores a computer program, and the computer program is loaded by the processor 10 to execute the steps in the control method of any one of the above embodiments.

[0090] Exemplary computer-readable storage media can include, but are not limited to, magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., compact disk (CD), digital versatile disk (DVD), etc.), smart cards, and flash memory devices (e.g., EPROM, card, stick, or key drive, etc.). Various computer-readable storage media described in embodiments of the present disclosure can represent one or more devices or other machine-readable storage media for storing information. The term "machine-readable storage media" shall accordingly include, but not be limited to, wireless channels and various other media capable of storing, containing, and / or carrying instruction(s) and / or data.

[0091] The above provides a kind of heat pump preheating control method, device, air source heat pump and computer readable storage medium provided by the embodiments of the present application in detail, the principle and implementation of the present application are described in this paper by applying specific example, the above embodiment is only for helping to understand the method and its core idea of the present application;Meanwhile, for the skilled in the art, according to the idea of the present application, there will be changes in specific implementation and application range, as described above, the content of the specification should not be understood as the limitation of the present application.

Claims

1. A heat pump preheating control method, characterized in that, The heat pump includes a compressor and a preheating module, and the heat pump preheating control method includes: In response to the heat pump receiving a start-up command, determine whether the compressor start-up conditions are met; In response to the determination that the compressor start-up conditions are not met, a cyclic preheating operation is performed until the compressor eliminates the start-up fault; the cyclic preheating operation includes: The compressor is controlled to remain stopped or stop starting, and the preheating module is controlled to preheat the compressor. Control the compressor to start, and determine whether the compressor has experienced a starting failure; Determine whether the compressor start-up conditions are met, including: The outdoor ambient temperature and the exhaust temperature of the compressor are obtained, and a first exhaust temperature threshold is determined based on the outdoor ambient temperature. Determine whether the outdoor ambient temperature is less than a first ambient temperature threshold and whether the exhaust temperature is less than a first exhaust temperature threshold. In response to determining that the outdoor ambient temperature is less than the first ambient temperature threshold and the exhaust temperature is less than the first exhaust temperature threshold, it is determined that the compressor start-up conditions are not met. In response to determining that the outdoor ambient temperature is greater than or equal to the first ambient temperature threshold and / or the exhaust temperature is greater than or equal to the first exhaust temperature threshold, it is determined that the compressor start-up conditions are met.

2. The heat pump preheating control method according to claim 1, characterized in that, The heat pump includes a circulating water pump and an auxiliary heat source. The circulating water pump drives the refrigerant to circulate, and the auxiliary heat source provides auxiliary heating to the refrigerant. The heat pump preheating control method includes: In response to the determination that the compressor start-up conditions are not met, the circulating water pump and the auxiliary heat source are controlled to start.

3. The heat pump preheating control method according to claim 1, characterized in that, Controlling the preheating module to preheat the compressor includes: Determine the target preheating time for the current preheating cycle based on the current number of preheating cycles; In response to the preheating module performing the first preheating of the compressor, the first preset preheating time is used as the target preheating time for the current preheating. In response to the preheating module performing a second preheating of the compressor, the second preset preheating time is used as the target preheating time for the current preheating; In response to the (i+1)th preheating of the compressor by the preheating module, the target preheating time for the current preheating is determined according to the following formula: Among them, t i t is the target preheating time for the i-th preheating of the compressor by the preheating module. i+1 The target preheating time is the (i+1)th preheating time of the compressor by the preheating module, where i is a positive integer and greater than 1.

4. The heat pump preheating control method according to claim 1, characterized in that, After the compressor eliminates the startup fault, the heat pump preheating control method includes: The number of preheating cycles, the preheating time for each preheating cycle, and the outdoor ambient temperature are obtained. The first preset preheating time is updated based on the number of preheating cycles, the preheating time for each preheating cycle, and the outdoor ambient temperature. The first preset preheating time is the target preheating time for the first preheating cycle.

5. The heat pump preheating control method according to claim 1, characterized in that, Controlling the preheating module to preheat the compressor includes: In response to the preheating module performing the first preheating of the compressor, determine whether the preheating stop condition is met; In response to determining that the preheating stop condition is met, the preheating module is controlled to stop preheating; The preheating stop conditions include at least one of the following: the actual preheating time reaches the target preheating time for the current preheating; the exhaust temperature of the compressor is greater than the second exhaust temperature threshold; the exhaust temperature of the compressor is greater than the third exhaust temperature threshold; the outdoor ambient temperature is greater than or equal to the second outer ambient temperature threshold. The second exhaust temperature threshold is a preset value; the third exhaust temperature threshold is determined based on the outdoor ambient temperature.

6. The heat pump preheating control method according to claim 1, characterized in that, Controlling the preheating module to preheat the compressor includes: The preheating power of the preheating module is determined based on the outdoor ambient temperature. The preheating module is controlled to preheat according to the preheating power.

7. A heat pump preheating control device, characterized in that, The heat pump includes a compressor and a preheating module, and the heat pump preheating control device includes: The test start control circuit is configured to determine whether the compressor start-up conditions are met. A preheating control circuit is configured to perform a cyclic preheating operation until the compressor eliminates the start-up fault; the cyclic preheating operation includes: The compressor is controlled to remain stopped or stop starting, and the preheating module is controlled to preheat the compressor. Control the compressor to start, and determine whether the compressor has experienced a starting failure; Determine whether the compressor start-up conditions are met, including: The outdoor ambient temperature and the exhaust temperature of the compressor are obtained, and a first exhaust temperature threshold is determined based on the outdoor ambient temperature. Determine whether the outdoor ambient temperature is less than a first ambient temperature threshold and whether the exhaust temperature is less than a first exhaust temperature threshold. In response to determining that the outdoor ambient temperature is less than the first ambient temperature threshold and the exhaust temperature is less than the first exhaust temperature threshold, it is determined that the compressor start-up conditions are not met. In response to determining that the outdoor ambient temperature is greater than or equal to the first ambient temperature threshold and / or the exhaust temperature is greater than or equal to the first exhaust temperature threshold, it is determined that the compressor start-up conditions are met.

8. An air source heat pump, characterized in that, include: compressor; A preheating module is configured to preheat the compressor; Memory, which stores computer programs; A processor, wherein the computer program, when executed by the processor, implements the heat pump preheating control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps of the heat pump preheating control method according to any one of claims 1 to 6.

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