Compressor starting control method and device, electronic equipment and temperature adjusting system

Abstract

The invention provides a compressor starting control method and device, electronic equipment and a temperature adjusting system. The control method is applied to a low-temperature working condition and comprises the steps of determining whether the current state of a compressor meets a first preset condition or not based on a starting instruction; starting coil heating according to the first preset condition; wherein the first preset condition comprises at least one of the following conditions: the temperature of a control module of the compressor is lower than a first preset temperature, the shutdown duration of the compressor is greater than or equal to a first preset duration, the exhaust temperature of the compressor is lower than a second preset temperature, and the second preset temperature is configured according to the working environment temperature; and the compressor is controlled to be started according to the fact that coil heating meets a second preset condition, and the second preset condition is used for representing that the difference value between the coil temperature threshold value and the coil temperature is smaller than or equal to the first temperature difference value in the static state. According to the oil return control method and device, before the compressor operates, the oil pool is preheated by heating the coil, and the oil return reliability during operation of the compressor is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of compressors, and in particular to a compressor startup control method and device, an electronic device, and a temperature regulation system. Background Art

[0002] Compressor lubricant oil has a certain viscosity. The lower the temperature, the greater the viscosity, which hinders oil return from the compressor. To ensure reliable oil return when a heat pump unit is restarted after a long shutdown in extremely low ambient temperatures, the common solution is to preheat the oil sump by starting the compressor intermittently or using heaters at the bottom of the compressor. However, these two methods only increase the temperature of the oil sump to a limited extent. Increasing the power of the heaters or increasing the number of heaters increases costs and risks material degradation. Summary of the Invention

[0003] The present disclosure provides a compressor startup control method and device, an electronic device, and a temperature adjustment system.

[0004] According to a first aspect of the present disclosure, a compressor startup control method is provided, which is applied to low-temperature operating conditions. The low-temperature operating conditions include when the operating environment temperature of the compressor is less than a first boundary temperature. The method includes:

[0005] Based on the start instruction of the compressor, determining whether the current state of the compressor meets a first preset condition;

[0006] Based on the current state satisfying a first preset condition, starting coil heating of the compressor to preheat the oil pool of the compressor; wherein the first preset condition includes at least one of the following: a control module temperature of the compressor is less than a first preset temperature, a shutdown time of the compressor is greater than or equal to the first preset time, and an exhaust temperature of the compressor is less than a second preset temperature, and the second preset temperature corresponds to an operating ambient temperature;

[0007] The compressor is controlled to start based on the coil heating of the compressor meeting a second preset condition, where the second preset condition is used to indicate that the difference between the static coil temperature threshold and the coil temperature is less than or equal to the first temperature difference.

[0008] In some embodiments, the first preset condition further includes: the duration during which the working environment temperature is lower than the first boundary temperature is greater than or equal to a second preset duration.

[0009] In some embodiments, the control module temperature of the compressor is less than a first preset temperature, comprising: a duration during which the control module temperature is less than the first preset temperature is greater than or equal to a third preset duration.

[0010] In some embodiments, the second preset condition includes at least one of the following:

[0011] The coil heating time meets the fourth preset time;

[0012] The difference between the control module temperature and the maximum operating temperature is less than or equal to the second temperature difference.

[0013] In some embodiments, based on the compressor startup instruction, determining whether the current state of the compressor meets the first preset condition includes:

[0014] determining, based on the startup instruction, whether the operating environment temperature is greater than or equal to a first boundary temperature;

[0015] If the working environment temperature is greater than or equal to the first boundary temperature, the compressor is controlled to start; otherwise, it is determined whether the current state of the compressor meets the first preset condition.

[0016] In some embodiments, controlling the compressor to start according to the coil heating of the compressor meeting a second preset condition includes:

[0017] According to the coil heating of the compressor meeting the second preset condition, turning off the coil heating of the compressor;

[0018] Controls the compressor start.

[0019] In some embodiments, controlling the compressor to start according to the coil heating of the compressor meeting a second preset condition includes:

[0020] According to the coil heating of the compressor meeting the second preset condition, the coil heating of the compressor is maintained, and the compressor is controlled to start.

[0021] In some embodiments, before controlling the compressor to start, the method further includes at least one of the following:

[0022] According to the failure of the ambient temperature detection device, the coil heating of the compressor is turned off;

[0023] According to the operating environment temperature being greater than or equal to the first boundary temperature, the coil heating of the compressor is turned off.

[0024] According to a second aspect of the present disclosure, a startup control device for a compressor is provided, and the control device is used to implement any control method of the present disclosure.

[0025] According to a third aspect of the present disclosure, there is provided an electronic device, including:

[0026] at least one processor; and

[0027] a memory communicatively connected to at least one processor; wherein,

[0028] The memory stores instructions that can be executed by at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to perform any control method of the present disclosure.

[0029] According to a fourth aspect of the present disclosure, a temperature adjustment system is provided, comprising a compressor and a control device or an electronic device according to an embodiment of the present disclosure.

[0030] The technical solution disclosed in the present invention, under low-temperature working conditions, needs to determine whether the current state of the compressor meets the first preset condition based on the start-up instruction of the compressor; if so, the coil heating of the compressor is turned on to preheat the oil pool; when the coil heating meets the second preset condition, the heat generated by the coil heating is conducted to the oil pool through the compressor, causing the oil pool temperature to rise. At this time, the compressor is controlled to start operation, which can reduce the risk of poor oil return during compressor operation due to excessively low oil pool temperature, thereby improving the oil return reliability during compressor operation.

[0031] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are provided to facilitate a better understanding of the present invention and do not constitute a limitation of the present disclosure.

[0033] Figure 1 1 is a flow chart of a startup control method for a compressor according to an embodiment of the present disclosure;

[0034] Figure 2 It is a curve of exhaust temperature change when the compressor is running;

[0035] Figure 3 The exhaust temperature change curve after the compressor stops in different ambient temperature ranges;

[0036] Figure 4 A schematic diagram showing the relationship between the ambient temperature range and the maximum exhaust temperature is shown;

[0037] Figure 5 Schematic diagram of heating a coil in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0038] The following description of exemplary embodiments of the present disclosure is made in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding. These details should be considered as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0039] In order to preset the oil pool of the compressor, the embodiment of the present disclosure provides a startup control method for the compressor. Figure 1 The figure is a flow chart of a startup control method of a compressor according to an embodiment of the present disclosure.

[0040] like Figure 1 As shown, the compressor startup control method is applied to low temperature working conditions, where the working environment temperature of the compressor is less than the first boundary temperature. The method includes steps S11 to S13. It can be understood that the control method disclosed herein is for the compressor in a stopped state.

[0041] Step S11 : determining whether the current state of the compressor satisfies a first preset condition based on the start-up instruction of the compressor.

[0042] The working environment temperature in this article refers to the temperature of the environment in which the compressor is located. For example, if the compressor is located indoors, the working environment temperature is the indoor temperature; if the compressor is located outdoors, the working environment temperature is the outdoor temperature.

[0043] The working environment temperature can be obtained through the ambient temperature detection device. The first boundary temperature is usually less than 0 degrees Celsius. For example, the numerical range of the first boundary temperature is -30℃ to -15℃. For example, the first boundary temperature is -20℃. The specific numerical value of the first boundary temperature can be determined according to actual conditions. By judging the relationship between the working environment temperature and the first boundary temperature, it can be determined whether the working environment temperature is less than the first boundary temperature. When the working environment temperature is less than the first boundary temperature, it indicates that the compressor is in a low temperature working condition. Under low temperature working conditions, there is a risk that the oil pool temperature will be lower than the second boundary temperature, and there is a risk of poor oil return. Therefore, it is necessary to judge whether the current state of the compressor meets the first preset condition.

[0044] Compressors can be used in temperature control systems, which can include air conditioning systems, heat pump units, and other temperature control systems. When the compressor is stopped, a start command can be generated based on the operating status of the temperature control system. For example, if the temperature control system detects that the ambient temperature is too low and heating is required, it can generate a start command to start the compressor. The start command can also be generated by a user operation, for example, by operating the temperature control system's remote control to turn on the temperature control system, which in turn generates a compressor start command to start the compressor.

[0045] The current state may include current operating parameters of the compressor, such as the operating environment temperature, the temperature of the compressor control module, the compressor shutdown time (i.e., the length of time the compressor stops operating), the exhaust temperature at the compressor exhaust port, and other parameters used to indicate the current operating state of the compressor. After receiving a start command for the compressor, whether the current state meets the first preset condition can be determined based on the current operating parameters of the compressor.

[0046] Step S12: based on the current state satisfying the first preset condition, start the coil heating of the compressor to preheat the oil pool of the compressor; wherein the first preset condition includes at least one of the following: the control module temperature of the compressor is less than the first preset temperature, the shutdown time of the compressor is greater than or equal to the first preset time, and the exhaust temperature of the compressor is less than the second preset temperature, and the second preset temperature is configured according to the working environment temperature.

[0047] The first preset condition may be used to indicate that the oil pool temperature of the compressor is lower than the second boundary temperature. When the oil pool temperature is lower than the second boundary temperature, if the compressor is started directly, there is a risk of oil return failure in the compressor, resulting in the compressor being unable to start normally.

[0048] The operation of the compressor is controlled by the control module. As the compressor operating time increases, the temperature of the control module will continue to rise and remain within an appropriate range. The control module has a maximum operating temperature Tfmax that it can tolerate. When the compressor stops, the temperature of the control module will drop. As the downtime increases, the temperature of the control module gradually decreases until the temperature of the control module is maintained at the first low temperature. Therefore, after the compressor stops, the drop in the temperature of the control module can reflect the length of time the compressor has been stopped. The control module temperature Tf of the compressor can be understood as the temperature of the controller in the control module, which can be obtained through the temperature control system where the compressor is located.

[0049] The first preset temperature Tf' is lower than the maximum operating temperature Tfmax. The first preset temperature Tf' can be set to a relatively low temperature, for example, less than 0 degrees Celsius. The specific value of the first preset temperature Tf' can be determined based on experience. When the compressor control module temperature Tf is lower than the first preset temperature Tf', it may indicate that the compressor has been down for a long time. Especially under low temperature conditions, a control module temperature Tf lower than the first preset temperature Tf' will cause the oil sump temperature to fall below the second boundary temperature, causing the current state to meet the first preset condition.

[0050] The first preset duration can correspond to the operating environment temperature. A corresponding ambient temperature range can be determined based on the operating environment temperature. For example, when the operating environment temperature is within the first ambient temperature range, the first preset duration is a first value; when the operating environment temperature is within the second ambient temperature range, the first preset duration is a second value. The specific values ​​of the first preset duration for each ambient temperature range can be obtained based on experience or testing.

[0051] Under low temperature conditions, if the compressor is restarted when the downtime is less than the first preset time, it means that the compressor downtime is relatively short. At this time, the oil pool temperature will not drop too much, and will not affect the oil return reliability. There is no need to turn on the coil heating.

[0052] Under low temperature conditions, if the compressor shutdown time is greater than or equal to the first preset time, the oil pool temperature will be lower than the second boundary temperature, and there is a risk of poor oil return, so that the current state meets the first preset condition.

[0053] The compressor has static and dynamic states. Static states refer to the state where the compressor stops running, stops compressing gas, and the refrigerant stops circulating. Dynamic states refer to the state where the compressor is running, compressing gas, and the refrigerant is circulating. The static and dynamic states of the compressor have different requirements for coil reliability. In dynamic state, the maximum temperature that the coil can reach is the dynamic coil temperature threshold Ts1; in static state, the maximum temperature that the coil can reach is the static coil temperature threshold Ts2. Ts2 <Ts1。

[0054] The compressor has an air inlet and an air outlet, and the exhaust temperature of the compressor is the temperature of the compressor exhaust outlet. Figure 2 The curve of the exhaust temperature change when the compressor is running, where the horizontal axis is time t and the vertical axis is the exhaust temperature Tp. Figure 2 It can be seen that when the compressor is running, the compressor exhaust temperature has a maximum exhaust temperature Tp max .

[0055] When the compressor is running, the compressor exhaust temperature is positively correlated with the winding temperature. The compressor exhaust temperature Tp reaches the maximum exhaust temperature Tp max , that is, the highest exhaust temperature during the compressor heating process, the compressor winding temperature usually also reaches the highest temperature, that is, the dynamic lower coil temperature threshold Ts1. At this time, if the compressor is turned off, that is, Cmp = OFF, the compressor exhaust temperature Tp begins to decay.

[0056] When the ambient temperature range is different, the corresponding Tp max Can be different. Figure 3 The exhaust temperature change curve after the compressor stops in different ambient temperature ranges is shown in Figure 3 In the same Tp maxFor comparison, where T4a, T4b, and T4c respectively represent three different ambient temperature ranges, with T4a > T4b > T4c, through Figure 3 It can be seen that the lower the ambient temperature, the faster the exhaust gas temperature Tp of the compressor drops after shutdown. The decay process of the compressor exhaust gas temperature Tp under static conditions (i.e., when the compressor is shutdown) can qualitatively characterize the decay of the coil temperature. Therefore, when the exhaust gas temperature of the compressor is less than the second preset temperature, it can be characterized that the coil temperature is less than the second low temperature.

[0057] When the compressor just shuts down, or when the exhaust gas temperature of the compressor is greater than the second preset temperature, it indicates that there is more residual heat in the coil. If the coil is heated, there is a risk of overheating and burning out the coil. When the exhaust gas temperature of the compressor is less than the second preset temperature, making the coil temperature less than the second low temperature, at this time, the residual heat in the coil is less. Heating the coil will cause the coil to dry burn and will not burn out the coil, ensuring the safety of coil heating. Characterizing the coil temperature through the exhaust gas temperature of the compressor does not require monitoring the coil temperature and does not require adding a coil temperature sensor.

[0058] It can be understood that the maximum exhaust gas temperature Tp of the compressor max corresponds to the ambient temperature range of the compressor, and the second preset temperature is configured according to the working ambient temperature. For example, the corresponding relationship between the ambient temperature range and the second preset temperature can be pre-stored; according to the working ambient temperature, the corresponding ambient temperature range can be determined, and then the corresponding second preset temperature can be determined. The second preset temperature is less than Tp of the corresponding ambient temperature range max . Figure 4 Shows a schematic diagram of the relationship between the ambient temperature range and the maximum exhaust gas temperature. As Figure 4 shown, the temperature of each ambient temperature range is less than the first boundary temperature T4u. When T41 < T4 ≤ T42, the maximum exhaust gas temperature Tp max1 ; when T42 < T4 ≤ T43, the maximum exhaust gas temperature Tp max2 ; when T43 < T4 ≤ T44, the maximum exhaust gas temperature Tp max3 . When the working ambient temperature T4 < T4u, the coil heating can be triggered, i.e., coil = ON; when the working ambient temperature T4 ≥ T4u, the coil heating is turned off, i.e., coil = OFF. The second preset temperature Tpa is less than the corresponding maximum exhaust gas temperature, i.e., Tpa < Tp max , and the specific value of Tpa can be obtained through testing or experience.

[0059] The exhaust temperature of the compressor can be obtained through the temperature sensor at the compressor exhaust port, and then it can be determined whether the exhaust temperature is less than the second preset temperature. When the exhaust temperature is less than the second preset temperature, it indicates that the compressor coil temperature has reached the second low temperature under low-temperature conditions, causing the oil sump temperature to be lower than the second boundary temperature, meeting the first preset condition, and there is a risk of poor oil return. At this time, the coil heating is turned on, causing the coil to dry burn without damaging the coil.

[0060] Turning on the coil heating of the compressor can be understood as providing a preset current to the compressor coil to make the coil heat up.

[0061] When the current state meets the first preset condition, turn on the coil heating of the compressor. The heat generated by the coil is conducted to the oil sump through the compressor to preheat the oil sump, avoiding poor oil return after the compressor starts and improving the oil return reliability of the compressor.

[0062] Step S13, according to the coil heating of the compressor meeting the second preset condition, control the compressor to start. The second preset condition is used to represent that the difference between the coil temperature threshold in the static state and the coil temperature is less than or equal to the first temperature difference.

[0063] The compressor has a static state and a dynamic state. In the dynamic state, the coil temperature Ts is less than the coil temperature threshold Ts1 in the dynamic state, that is, Ts < Ts1; in the static state, the coil temperature Ts is less than the coil temperature threshold Ts2 in the static state, that is, Ts < Ts2.

[0064] When the difference between the coil temperature threshold in the static state and the coil temperature is less than or equal to the first temperature difference, it indicates that coil dry burning is not allowed, otherwise it is easy to cause the risk of coil damage. The second preset condition is used to represent that the difference between the coil temperature threshold in the static state and the coil temperature is less than or equal to the first temperature difference. Thus, when the coil heating of the compressor meets the second preset condition, it indicates that the coil temperature has reached the critical value of dry burning. At this time, the compressor can be started so that the refrigerant cycle can cool the coil or make the compressor in the dynamic state to ensure the safety of the coil. At the same time, after the coil heating meets the second preset condition, the coil has provided enough heat, and the heat generated by the coil can be conducted to the oil sump through the compressor, increasing the temperature of the oil sump and improving the oil return reliability of the compressor in the dynamic state.

[0065] The technical solution of the present disclosure, under low-temperature conditions, based on the start command of the compressor, it is necessary to determine whether the current state of the compressor meets the first preset condition; if it meets, turn on the coil heating of the compressor to preheat the oil sump; when the coil heating meets the second preset condition, the heat generated by the coil heating is conducted to the oil sump through the compressor, increasing the temperature of the oil sump. At this time, control the compressor to start running, which can reduce the risk of poor oil return during compressor operation caused by too low oil sump temperature and improve the oil return reliability during compressor operation.

[0066] The working environment of the compressor may experience sudden temperature changes, which sometimes do not have a negative impact on the oil pool temperature and will not cause poor oil return. In one embodiment, the first preset condition may also include: the working environment temperature is less than the first boundary temperature for a duration greater than or equal to a second preset duration. The specific value of the second preset duration can be obtained based on testing or experience. Experiments have shown that when the working environment temperature of the compressor is less than the first boundary temperature for a duration greater than or equal to the second preset duration, there is a risk that the oil pool temperature will be lower than the second boundary temperature. At this time, if the compressor is started, there is a risk of poor oil return.

[0067] In order to make the compressor control module temperature more accurately reflect the coil waste heat temperature or the compressor shutdown duration, the first preset condition can also include: the control module temperature is less than the first preset temperature for a duration greater than or equal to a third preset duration. As can be seen from the above, a drop in the control module temperature can reflect the compressor shutdown duration. When the control module temperature is less than the first preset temperature for a duration greater than or equal to the third preset duration, it means that the compressor shutdown duration under low temperature conditions has reached the first preset duration, and there is a risk of poor oil return if the compressor is started. The specific value of the third preset duration can be obtained through testing or experience.

[0068] In one embodiment, the second preset condition includes: the coil heating duration meets a fourth preset duration. That is, the compressor can be controlled to start when the coil heating duration reaches the fourth preset duration. When heating the coil, not only the coil's tolerance but also the user experience must be considered. If the fourth preset duration is too long, there is a risk of coil overheating and burning, which may be unacceptable to the user. If the coil heating time is too short, the oil pool preheating effect cannot be achieved. An appropriate fourth preset duration can be selected based on testing or experience to ensure that the oil pool preheating effect is achieved without excessively delaying the compressor's operation.

[0069] It is understandable that coil heating is usually controlled by a control module. Therefore, when the coil is heated, the coil temperature rises, and the control module temperature gradually rises with the heating time. Therefore, the control module temperature can be used to represent the coil temperature.

[0070] In one embodiment, the second preset condition may include: a difference between the control module temperature and the maximum operating temperature is less than or equal to a second temperature difference.

[0071] It's understandable that heating the coil in static mode can cause the coil to dry out, and prolonged heating can even burn the coil. If the difference between the control module temperature and the maximum operating temperature is less than or equal to the second temperature difference, it indicates that the coil temperature is very close to the static coil temperature threshold Ts2. At this point, coil heating should be stopped or the compressor should be started. To prevent coil burnout, the specific value of the second temperature difference can be determined through testing or experience.

[0072] In one embodiment, determining whether the current state of the compressor meets the first preset condition based on the start-up instruction of the compressor may include: determining whether the working environment temperature is greater than or equal to the first boundary temperature based on the start-up instruction; controlling the compressor to start according to the working environment temperature being greater than or equal to the first boundary temperature; otherwise, determining whether the current state of the compressor meets the first preset condition.

[0073] That is, when the ambient operating temperature is greater than or equal to the first boundary temperature, the compressor is not operating at a low temperature. The relatively high ambient operating temperature will not cause the oil pool temperature to be too low. At this time, there is no need to preheat the oil pool; after the start command is issued, the compressor can be directly controlled to start. When the ambient operating temperature is less than the first boundary temperature, it indicates that the compressor is operating at a low temperature. If the compressor is started directly based on the start command, there is a risk of poor oil return. It is necessary to determine whether the current state of the compressor meets the first preset condition, and then determine whether coil heating needs to be turned on.

[0074] In one embodiment, controlling the compressor to start based on the compressor coil heating satisfying a second preset condition includes: turning off the compressor coil heating based on the compressor coil heating satisfying the second preset condition; and controlling the compressor to start. In this case, when the compressor coil heating satisfies the second preset condition, the compressor coil heating is first turned off; and then the compressor is controlled to start.

[0075] In this embodiment, two different control units can be used for coil heating and compressor operation. For example, the coil control unit is used to heat the coil, and the compressor control unit is used to control the start and stop of the compressor. The coil heating is turned off when the compressor is stopped and turned on when the compressor is running. In other words, coil heating and compressor operation are performed simultaneously. When the method disclosed herein is used, when the coil heating meets the second preset condition, the coil heating is turned off by the coil control unit; then, the compressor operation is started by the compressor control unit, and the coil heating is performed simultaneously.

[0076] Figure 5 This is a schematic diagram of heating the coil in one embodiment of the present disclosure. Figure 5 In the static state, the exhaust temperature decay of the compressor is used to represent the change of coil temperature, such as Figure 5As shown, after the compressor stops, that is, Cmp=OFF, the compressor exhaust temperature Tp(t) begins to decay over time from the maximum exhaust temperature Tpmax until the first preset duration t1. During this process, the energy Power provided to the coil is ≈ 0, that is, the energy Power provided to the coil by the coil control unit is ≈ 0. At the moment when the first preset duration t1 is reached, based on the compressor start instruction and the current state meets the first preset condition, such as the compressor shutdown duration reaches the first preset duration t1, the coil heating is turned on, that is, the coil control unit provides a preset current to the coil to heat the coil. The start of the coil heating is represented by coil=ON. When the coil heating duration meets the fourth preset duration t2, that is, the second preset condition is met, the coil heating is turned off, so that the energy provided to the coil by the coil control unit is restored to 0, and the compressor is controlled to start through the compressor control unit.

[0077] In another embodiment, controlling the compressor to start based on the compressor coil heating satisfying a second preset condition includes: maintaining the compressor coil heating and controlling the compressor to start based on the compressor coil heating satisfying the second preset condition. In this case, when the compressor coil heating satisfies the second preset condition, the coil heating is maintained while controlling the compressor to start. After the compressor starts, the refrigerant in the temperature control system begins to circulate, cooling the coil.

[0078] In this embodiment, coil heating and compressor operation can utilize the same control unit, but coil heating and compressor operation can be enabled independently. When using the disclosed method, based on a startup instruction, coil heating is enabled first if the current state of the compressor satisfies a first preset condition. When coil heating satisfies a second preset condition, compressor operation is enabled, maintaining coil heating.

[0079] In one embodiment, before controlling the compressor to start, the method further includes at least one of the following: shutting down the coil heating of the compressor based on a failure of the ambient temperature detection device; shutting down the coil heating of the compressor based on the working ambient temperature being greater than or equal to a first boundary temperature.

[0080] The ambient temperature detection device is used to detect the compressor's operating environment temperature. In this disclosure, the coil heating function is implemented based on low-temperature operating conditions. If the ambient temperature detection device fails, it cannot be used to determine whether the operating condition is low temperature. In this case, to prevent the coil from burning out, the compressor coil heating needs to be turned off. In other words, independent coil heating is not allowed when the compressor is stopped.

[0081] When the operating ambient temperature is greater than or equal to the first boundary temperature, the operating ambient temperature is high. In this case, even if the compressor is shut down for a long time, it is generally believed that there is no risk of poor oil return due to low oil sump temperature. In this case, the compressor coil heating can be turned off. Based on the compressor start command, the compressor can be directly controlled to start.

[0082] An embodiment of the present disclosure further provides a startup control device for a compressor, which is used to implement the control method of any embodiment of the present disclosure.

[0083] According to an embodiment of the present disclosure, the present disclosure further provides an electronic device. The electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor. The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the control method of any embodiment of the present disclosure.

[0084] An embodiment of the present disclosure further provides a readable storage medium storing a computer program, which, when executed by a processor, implements the control method in any embodiment of the present disclosure.

[0085] The present disclosure also provides a temperature control system, including a compressor and a control device or electronic device according to the present disclosure. The temperature control system may include an air conditioning system, a heating and ventilation system, or a heat pump system.

[0086] The disclosed temperature control system utilizes the disclosed compressor startup control method. When a compressor is restarted after a prolonged shutdown under low-temperature conditions, the system determines whether the compressor's current state meets a first preset condition. If the first condition is met, the system activates coil heating to preheat the compressor's oil sump, raising the oil sump temperature during operation. If the coil heating meets a second preset condition, the compressor is controlled to start. At this point, the oil sump temperature has already risen, eliminating the risk of poor oil return after compressor startup, thereby improving oil return reliability during compressor operation. Furthermore, this solution eliminates the need for separate coil temperature monitoring, minimizing hardware costs.

[0087] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0088] The program code for implementing the method of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device so that when the program code is executed by the processor or controller, the functions / operations specified in the flow chart and / or block diagram are implemented. The program code can be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0089] In the context of the present disclosure, a machine-readable medium can be a tangible medium that can contain or store a program for use by or in conjunction with an instruction execution system, device or equipment. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium can include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0090] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0091] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0092] A computer system may include a client and a server. The client and server are generally remote from each other and typically interact through a communication network. The client-server relationship arises through computer programs running on the respective computers and having a client-server relationship with each other. The server may be a cloud server, a server in a distributed system, or a server integrated with a blockchain.

[0093] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. This is not a limitation herein.

[0094] The above specific embodiments do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the scope of protection of this disclosure.

Claims

1. A compressor startup control method, characterized in that: Applied to low temperature working conditions, wherein the low temperature working conditions include the working environment temperature of the compressor being lower than a first boundary temperature, the method includes: Based on the start-up instruction of the compressor, determining whether the current state of the compressor meets a first preset condition; According to the current state satisfying the first preset condition, turning on the coil heating of the compressor to preheat the oil pool of the compressor; wherein the first preset condition includes at least one of the following: the temperature of the control module of the compressor is less than a first preset temperature, the shutdown time of the compressor is greater than or equal to the first preset time, and the exhaust temperature of the compressor is less than a second preset temperature, and the second preset temperature is configured according to the working environment temperature; The compressor is controlled to start based on the coil heating of the compressor meeting a second preset condition, where the second preset condition is used to indicate that the difference between the static coil temperature threshold and the coil temperature is less than or equal to a first temperature difference.

2. The method according to claim 1, characterized in that The first preset condition further includes: the duration for which the working environment temperature is lower than the first boundary temperature is greater than or equal to a second preset duration.

3. The method according to claim 1, characterized in that The first preset condition further includes: the duration for which the temperature of the control module is lower than the first preset temperature is greater than or equal to a third preset duration.

4. The method according to claim 1, wherein The second preset condition includes at least one of the following: The coil heating time meets the fourth preset time; The difference between the control module temperature and the maximum operating temperature is less than or equal to a second temperature difference.

5. The method according to claim 1, wherein Determining, based on a start-up instruction of the compressor, whether a current state of the compressor satisfies a first preset condition includes: determining, based on the startup instruction, whether the operating environment temperature is greater than or equal to the first boundary temperature; If the working environment temperature is greater than or equal to the first boundary temperature, the compressor is controlled to start; otherwise, it is determined whether the current state of the compressor meets the first preset condition.

6. The method according to claim 1, wherein According to the coil heating of the compressor meeting a second preset condition, controlling the compressor to start includes: According to the coil heating of the compressor meeting a second preset condition, turning off the coil heating of the compressor; The compressor is controlled to start.

7. The method according to claim 1, characterized in that According to the coil heating of the compressor meeting a second preset condition, controlling the compressor to start includes: According to the coil heating of the compressor meeting a second preset condition, the coil heating of the compressor is maintained, and the compressor is controlled to start.

8. The method according to any one of claims 1 to 7, characterized in that Before controlling the compressor to start, the method further includes at least one of the following: shutting down coil heating of the compressor according to a failure of the ambient temperature detection device; According to the working environment temperature being greater than or equal to the first boundary temperature, the coil heating of the compressor is turned off.

9. A compressor startup control device, characterized in that: The control device is used to implement the control method according to any one of claims 1 to 8.

10. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to perform the control method according to any one of claims 1 to 8.

11. A temperature control system, characterized in that: The invention comprises a compressor and also comprises the control device according to claim 9 or the electronic device according to claim 10.

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