Defrosting control method and device, electronic equipment, storage medium and chip

Abstract

This disclosure provides a defrosting control method, apparatus, electronic device, storage medium, and chip, relating to the field of control technology. The method includes acquiring, when a heat exchange device enters defrosting mode, a first temperature change rate of the indoor environment in the current cycle and a second temperature change rate of the previous cycle for the indoor environment where the heat exchange device is located. Based on the first and second temperature change rates, a first defrosting frequency for the current cycle is determined, and defrosting is then performed based on the first defrosting frequency. This achieves dynamic adjustment of the defrosting frequency according to actual indoor temperature changes, reducing defrosting energy consumption and improving indoor thermal comfort.

Description

Technical Field

[0001] This disclosure relates to the field of control technology, and in particular to a defrosting control method, apparatus, electronic device, storage medium, and chip. Background Technology

[0002] During the operation of heat exchange equipment (such as air conditioners), frost will gradually accumulate on the heat exchanger. The frost will affect the heat exchange efficiency of the equipment, so it is necessary to defrost the heat exchanger.

[0003] Among the defrosting control technologies, defrosting control is usually relatively crude, not comfortable enough, and consumes a lot of energy. Summary of the Invention

[0004] This disclosure provides a defrosting control method, apparatus, electronic device, storage medium, and chip to solve problems in the related art.

[0005] A first aspect of this disclosure provides a defrosting control method, the method comprising:

[0006] In response to the heat exchange equipment entering defrost mode, the first temperature change rate of the indoor environment where the heat exchange equipment is located in the current cycle is obtained, and the second temperature change rate of the previous cycle in the current cycle is obtained.

[0007] Based on the first temperature change rate and the second temperature change rate, the first defrosting frequency of the heat exchange device in the current cycle is determined;

[0008] Based on the first defrosting frequency, the heat exchange equipment is defrosted.

[0009] In some possible implementations, controlling the heat exchange device to enter defrost mode includes:

[0010] The system obtains the first indoor temperature of the indoor environment in the current cycle, the first heat exchanger temperature of the heat exchange device, the set temperature of the heat exchange device, and the start-up operating time of the heat exchange device.

[0011] Based on the first indoor temperature, the first heat exchanger temperature, the set temperature, and the start-up running time, the heat exchange equipment is controlled to enter defrost mode.

[0012] In some possible implementations, controlling the heat exchange equipment to enter defrost mode based on the first indoor temperature, the first heat exchanger temperature, the set temperature, and the start-up duration includes:

[0013] Based on the startup duration and the temperature of the first heat exchanger, determine whether the heat exchanger of the heat exchange equipment is in the first frost state; the first frost state is the state in which there is a frost layer on the heat exchanger that is less than a preset thickness;

[0014] If the heat exchanger is in the first frost state, then based on the first indoor temperature and the set temperature, it is determined whether the indoor environment is in a preset thermal comfort state; the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to a first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than a first preset temperature difference threshold.

[0015] If the indoor environment is in the preset thermal comfort state, then the heat exchange equipment is controlled to enter the defrosting mode.

[0016] In some possible implementations, determining whether the heat exchanger of the heat exchange device is in a first frost state based on the start-up operating time and the temperature of the first heat exchanger includes:

[0017] Obtain the first outdoor temperature of the outdoor environment where the heat exchange equipment is located;

[0018] If the start-up running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is within the first preset temperature range, then the heat exchanger is determined to be in the first frost state.

[0019] If the startup duration is less than the first preset duration threshold, then it is determined that the heat exchanger is not in the first frost state.

[0020] In some possible implementations, determining whether the heat exchanger of the heat exchange device is in a first frost state based on the start-up operating time and the temperature of the first heat exchanger includes:

[0021] If the startup running time is greater than or equal to the first preset time threshold, and the temperature of the first heat exchanger is within the second preset temperature range, then the heat exchanger is determined to be in the first frost state.

[0022] If the startup running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is not within the first preset temperature range, then it is determined that the heat exchanger is not in the first frost state.

[0023] If the startup runtime is greater than or equal to the first preset duration threshold, and the temperature of the first heat exchanger is not within the second preset temperature range, then it is determined that the heat exchanger is not in the first frost state.

[0024] In some possible implementations, determining whether the indoor environment is in a preset thermal comfort state based on the first indoor temperature and the set temperature includes:

[0025] If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, then the indoor environment is determined to be in the preset thermal comfort state.

[0026] If the first indoor temperature is less than the first preset temperature threshold, then it is determined that the indoor environment is not in the preset thermal comfort state.

[0027] If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is greater than or equal to the first preset temperature difference threshold, then it is determined that the indoor environment is not in the preset thermal comfort state.

[0028] In some possible implementations, determining whether the indoor environment is in a preset thermal comfort state includes:

[0029] Based on the first indoor temperature and the first temperature change rate, determine whether the indoor environment is in the preset thermal comfort state; the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, or the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is greater than or equal to a preset rate threshold.

[0030] In some possible implementations, determining whether the indoor environment is in the preset thermal comfort state based on the first indoor temperature and the first temperature change rate includes:

[0031] If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is greater than or equal to the preset rate threshold, then the indoor environment is determined to be in the preset thermal comfort state.

[0032] If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is less than the preset rate threshold, then it is determined that the indoor environment is not in the preset thermal comfort state.

[0033] In some possible implementations, the method further includes:

[0034] If the indoor environment is not in the preset thermal comfort state, then based on the temperature of the first heat exchanger, it is determined whether the heat exchanger is in the second frost state; the second frost state is a state in which there is a frost layer on the heat exchanger that is greater than or equal to the preset thickness.

[0035] If the heat exchanger is in the second frost state, then control the heat exchange equipment to enter the defrosting mode.

[0036] In some possible implementations, determining whether the heat exchanger is in a second frost state based on the temperature of the first heat exchanger includes:

[0037] If the temperature difference between the first outdoor temperature and the first heat exchanger temperature is less than the second preset temperature difference threshold, then the heat exchanger is determined to be in the second frost state; the second preset temperature difference threshold is less than any temperature within the first preset temperature range.

[0038] If the temperature difference between the first outdoor temperature and the first heat exchanger temperature is greater than or equal to the second preset temperature difference threshold, then it is determined that the heat exchanger is not in the second frost state.

[0039] In some possible implementations, determining whether the heat exchanger is in a second frost state based on the temperature of the first heat exchanger includes:

[0040] If the temperature of the first heat exchanger is less than the second preset temperature threshold, then the heat exchanger is determined to be in the second frost state; the second preset temperature threshold is less than any temperature within the second preset temperature range.

[0041] If the temperature of the first heat exchanger is greater than or equal to the second preset temperature threshold, then it is determined that the heat exchanger is not in the second frost state.

[0042] In some possible implementations, the method for calculating the rate of temperature change in any given period includes:

[0043] The second indoor temperature of the indoor environment when the heat exchange equipment is turned on, and the third indoor temperature of the indoor environment in any cycle, and the operating time of the heat exchange equipment are obtained.

[0044] The temperature change rate for any given period is calculated based on the second indoor temperature, the third indoor temperature, and the operating time.

[0045] In some possible implementations, calculating the temperature change rate for any given period based on the second indoor temperature, the third indoor temperature, and the operating time includes:

[0046] The difference between the third indoor temperature and the second indoor temperature is calculated to obtain the first difference result;

[0047] The temperature change rate for any given cycle is obtained by quotienting the difference result with the startup duration.

[0048] In some possible implementations, determining the first defrosting frequency of the heat exchange device in the current cycle based on the first temperature change rate and the second temperature change rate includes:

[0049] Obtain the second defrosting frequency of the previous cycle;

[0050] Based on the changes in the first and second temperature change rates, the second defrosting frequency is adjusted by increasing or decreasing the magnitude of the adjustment to obtain the first defrosting frequency.

[0051] In some possible implementations, adjusting the second defrosting frequency by increasing or decreasing the magnitude based on the changes in the first temperature change rate and the second temperature change rate to obtain the first defrosting frequency includes:

[0052] If the first temperature change rate is less than the second temperature change rate, then the second defrosting frequency is adjusted by increasing the frequency to obtain the first defrosting frequency.

[0053] In some possible implementations, adjusting the second defrosting frequency by increasing or decreasing the magnitude based on the changes in the first temperature change rate and the second temperature change rate to obtain the first defrosting frequency includes:

[0054] If the first temperature change rate is greater than the second temperature change rate, then the second defrosting frequency is adjusted by reducing the amplitude to obtain the first defrosting frequency.

[0055] In some possible implementations, adjusting the second defrosting frequency by increasing or decreasing the magnitude based on the changes in the first temperature change rate and the second temperature change rate to obtain the first defrosting frequency includes:

[0056] If the first temperature change rate is equal to the second temperature change rate, then the second defrosting frequency is determined as the first defrosting frequency.

[0057] In some possible implementations, adjusting the second defrosting frequency by increasing or decreasing the magnitude based on the changes in the first temperature change rate and the second temperature change rate to obtain the first defrosting frequency includes:

[0058] The increase or decrease of the second defrosting frequency is adjusted according to the magnitude of the changes in the first temperature change rate and the second temperature change rate.

[0059] The second defrosting frequency is adjusted according to the adjusted increase or decrease range to obtain the first defrosting frequency; wherein the magnitude of the change is positively correlated with the increase or decrease range.

[0060] In some possible implementations, the method further includes:

[0061] If the defrosting time reaches a second preset time threshold when defrosting is performed at the first defrosting frequency, the heat exchange device is controlled to exit the defrosting mode; the second preset time threshold is a comparison threshold for determining whether the heat exchange device should exit the defrosting mode.

[0062] In some possible implementations, the method further includes:

[0063] Before the defrosting time according to the first defrosting frequency reaches the second preset time threshold, if the temperature of the second heat exchanger of the heat exchange equipment is less than the third preset temperature threshold, the second preset time threshold and the first preset defrosting time increment are summed, and the sum of the second preset time threshold and the first preset defrosting time increment is used as the updated second preset time threshold.

[0064] The step of defrosting at the first defrosting frequency reaching the second preset time threshold includes: the defrosting at the first defrosting frequency reaching the updated second preset time threshold.

[0065] In some possible implementations, the method further includes:

[0066] Before the defrosting time according to the first defrosting frequency reaches the second preset time threshold, if the temperature of the second heat exchanger is greater than or equal to the third preset temperature threshold, then the second outdoor temperature of the outdoor environment where the heat exchange equipment is located and the chassis temperature of the heat exchanger of the heat exchange equipment are obtained.

[0067] If the temperature difference between the second outdoor temperature and the chassis temperature is less than or equal to the third preset temperature difference threshold, then the heat exchange device is controlled to exit the defrosting mode.

[0068] In some possible implementations, the method further includes:

[0069] If the temperature difference between the second outdoor temperature and the chassis temperature is greater than the third preset temperature difference threshold, then obtain the second preset defrosting frequency change and the second preset defrosting time increment.

[0070] The first defrosting frequency and the change in the second preset defrosting frequency are summed, and the sum of the first defrosting frequency and the change in the second preset defrosting frequency is used as the updated first defrosting frequency.

[0071] The defrosting process of the heat exchange equipment based on the first defrosting frequency includes: defrosting according to the updated first defrosting frequency until the defrosting duration is greater than or equal to the sum of the second preset duration threshold and the second preset defrosting duration increment.

[0072] A second aspect of this disclosure provides a defrosting control device, the device comprising:

[0073] The rate acquisition unit is used to acquire the first temperature change rate of the indoor environment where the heat exchange equipment is located in the current cycle in response to the heat exchange equipment entering the defrosting mode, and to acquire the second temperature change rate of the previous cycle of the current cycle.

[0074] A frequency determination unit is used to determine a first defrosting frequency of the heat exchange device in the current cycle based on the first temperature change rate and the second temperature change rate.

[0075] A defrosting unit is used to perform defrosting on the heat exchange equipment based on the first defrosting frequency.

[0076] In some possible implementations, the device further includes:

[0077] The data acquisition unit is used to acquire the first indoor temperature of the indoor environment in the current cycle, the first heat exchanger temperature of the heat exchange device, the set temperature of the heat exchange device, and the start-up running time of the heat exchange device.

[0078] The defrosting control unit is used to control the heat exchange equipment to enter the defrosting mode based on the first indoor temperature, the first heat exchanger temperature, the set temperature, and the start-up running time.

[0079] In some possible implementations, the defrosting control unit includes:

[0080] The first state determination module is used to determine whether the heat exchanger of the heat exchange equipment is in the first frost state based on the start-up running time and the temperature of the first heat exchanger; the first frost state is the state in which there is a frost layer on the heat exchanger that is less than a preset thickness.

[0081] The second state determination module is used to determine whether the indoor environment is in a preset thermal comfort state based on the first indoor temperature and the set temperature when the heat exchanger is in the first frost state. The preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to a first preset temperature threshold and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than a first preset temperature difference threshold.

[0082] The defrosting control module is used to control the heat exchange equipment to enter the defrosting mode when the indoor environment is in the preset thermal comfort state.

[0083] In some possible implementations, the first state determination module is used to:

[0084] Obtain the first outdoor temperature of the outdoor environment where the heat exchange equipment is located;

[0085] When the start-up running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is within the first preset temperature range, the heat exchanger is determined to be in the first frost state.

[0086] When the startup duration is less than the first preset duration threshold, it is determined that the heat exchanger is not in the first frost state.

[0087] In some possible implementations, the first state determination module is used to:

[0088] When the start-up running time is greater than or equal to the first preset time threshold, and the temperature of the first heat exchanger is within the second preset temperature range, the heat exchanger is determined to be in the first frost state.

[0089] When the start-up running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is not within the first preset temperature range, it is determined that the heat exchanger is not in the first frost state.

[0090] When the start-up running time is greater than or equal to the first preset time threshold, and the temperature of the first heat exchanger is not within the second preset temperature range, it is determined that the heat exchanger is not in the first frost state.

[0091] In some possible implementations, the second state determination module is used to:

[0092] When the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, the indoor environment is determined to be in the preset thermal comfort state.

[0093] When the first indoor temperature is less than the first preset temperature threshold, it is determined that the indoor environment is not in the preset thermal comfort state.

[0094] When the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is greater than or equal to the first preset temperature difference threshold, it is determined that the indoor environment is not in the preset thermal comfort state.

[0095] In some possible implementations, the second state determination module includes:

[0096] The state determination submodule is used to determine whether the indoor environment is in the preset thermal comfort state based on the first indoor temperature and the first temperature change rate. The preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, or the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold and the first temperature change rate is greater than or equal to a preset rate threshold.

[0097] In some possible implementations, the state determination submodule is used for:

[0098] When the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is greater than or equal to the preset rate threshold, the indoor environment is determined to be in the preset thermal comfort state.

[0099] When the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is less than the preset rate threshold, it is determined that the indoor environment is not in the preset thermal comfort state.

[0100] In some possible implementations, the device further includes:

[0101] The state determination unit is used to determine whether the heat exchanger is in a second frost state based on the temperature of the first heat exchanger when the indoor environment is not in the preset thermal comfort state; the second frost state is the state in which there is a frost layer on the heat exchanger that is greater than or equal to the preset thickness.

[0102] The defrosting control unit is used to control the heat exchange equipment to enter the defrosting mode when the heat exchanger is in the second frost layer state.

[0103] In some possible implementations, the state determination unit includes:

[0104] The third state determination module is used to determine that the heat exchanger is in the second frost state when the temperature difference between the first outdoor temperature and the first heat exchanger temperature is less than a second preset temperature difference threshold; the second preset temperature difference threshold is less than any temperature within the first preset temperature range.

[0105] The third state determination module is used to determine that the heat exchanger is not in the second frost state when the temperature difference between the first outdoor temperature and the first heat exchanger temperature is greater than or equal to the second preset temperature difference threshold.

[0106] In some possible implementations, the state determination unit includes:

[0107] The third state determination module is used to determine that the heat exchanger is in the second frost state when the temperature of the first heat exchanger is less than the second preset temperature threshold; the second preset temperature threshold is less than any temperature within the second preset temperature range.

[0108] The third state determination module is used to determine that the heat exchanger is not in the second frost state when the temperature of the first heat exchanger is greater than or equal to the second preset temperature threshold.

[0109] In some possible implementations, the device further includes:

[0110] The data acquisition unit is used to acquire the second indoor temperature of the indoor environment when the heat exchange equipment is turned on, the third indoor temperature of the indoor environment in any cycle, and the operating time of the heat exchange equipment.

[0111] The rate calculation unit is used to calculate the temperature change rate of any one cycle based on the second indoor temperature, the third indoor temperature, and the start-up running time.

[0112] In some possible implementations, the rate calculation unit includes:

[0113] The difference calculation module is used to calculate the difference between the third indoor temperature and the second indoor temperature to obtain a first difference result.

[0114] The rate calculation module is used to calculate the quotient between the difference result and the power-on running time to obtain the temperature change rate of any cycle.

[0115] In some possible implementations, the frequency determination unit includes:

[0116] The frequency acquisition module is used to acquire the second defrosting frequency of the previous cycle;

[0117] The frequency adjustment module is used to adjust the second defrosting frequency by increasing or decreasing the magnitude of the increase or decrease based on the changes in the first temperature change rate and the second temperature change rate, so as to obtain the first defrosting frequency.

[0118] In some possible implementations, the frequency adjustment module is used for:

[0119] When the first temperature change rate is less than the second temperature change rate, the second defrosting frequency is adjusted by increasing the frequency to obtain the first defrosting frequency.

[0120] In some possible implementations, the frequency adjustment module is used for:

[0121] When the first temperature change rate is greater than the second temperature change rate, the second defrosting frequency is adjusted by reducing the amplitude to obtain the first defrosting frequency.

[0122] In some possible implementations, the frequency adjustment module is used for:

[0123] When the first temperature change rate is equal to the second temperature change rate, the second defrosting frequency is determined as the first defrosting frequency.

[0124] In some possible implementations, the frequency adjustment module is used for:

[0125] The increase or decrease of the second defrosting frequency is adjusted according to the magnitude of the changes in the first temperature change rate and the second temperature change rate.

[0126] The second defrosting frequency is adjusted according to the adjusted increase or decrease range to obtain the first defrosting frequency; wherein the magnitude of the change is positively correlated with the increase or decrease range.

[0127] In some possible implementations, the device further includes:

[0128] The defrosting control unit is used to control the heat exchange device to exit the defrosting mode when the defrosting time according to the first defrosting frequency reaches a second preset time threshold; the second preset time threshold is a comparison threshold for determining whether the heat exchange device has exited the defrosting mode.

[0129] In some possible implementations, the device further includes:

[0130] The threshold update unit is used to, before the defrosting time of defrosting according to the first defrosting frequency reaches the second preset time threshold, when the temperature of the second heat exchanger of the heat exchange equipment is less than the third preset temperature threshold, sum the second preset time threshold with the first preset defrosting time increment, and use the sum of the second preset time threshold and the first preset defrosting time increment as the updated second preset time threshold.

[0131] The step of defrosting at the first defrosting frequency reaching the second preset time threshold includes: the defrosting at the first defrosting frequency reaching the updated second preset time threshold.

[0132] In some possible implementations, the device further includes:

[0133] The temperature acquisition unit is used to acquire the second outdoor temperature of the outdoor environment where the heat exchange equipment is located and the chassis temperature of the heat exchange equipment when the temperature of the second heat exchanger is greater than or equal to the third preset temperature threshold, before the defrosting time of defrosting according to the first defrosting frequency reaches the second preset time threshold.

[0134] The defrosting control unit is used to control the heat exchange device to exit the defrosting mode when the temperature difference between the second outdoor temperature and the chassis temperature is less than or equal to a third preset temperature difference threshold.

[0135] In some possible implementations, the device further includes:

[0136] The data acquisition unit is used to acquire the second preset defrosting frequency change and the second preset defrosting time increment when the temperature difference between the second outdoor temperature and the chassis temperature is greater than the third preset temperature difference threshold.

[0137] The frequency update unit is used to sum the change in the first defrosting frequency and the change in the second preset defrosting frequency, and use the sum of the change in the first defrosting frequency and the change in the second preset defrosting frequency as the updated first defrosting frequency.

[0138] The defrosting unit is used to: defrost the heat exchange equipment based on the first defrosting frequency, including: defrosting according to the updated first defrosting frequency until the defrosting duration is greater than or equal to the sum of the second preset duration threshold and the second preset defrosting duration increment.

[0139] A third aspect of this disclosure provides an electronic device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the methods described in the first aspect of this disclosure.

[0140] A fourth aspect of this disclosure provides a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to cause a computer to perform the methods described in the first aspect of this disclosure.

[0141] A fifth aspect of this disclosure provides a chip including one or more interfaces and one or more processors; the interfaces are configured to receive signals from the memory of an electronic device and send signals to the processors, the signals including computer instructions stored in the memory, which, when executed by the processor, cause the electronic device to perform the methods described in the first aspect of this disclosure.

[0142] In summary, the defrosting control method proposed in this disclosure includes acquiring, when the heat exchange equipment enters defrosting mode, a first temperature change rate of the indoor environment in the current cycle and a second temperature change rate of the previous cycle, determining a first defrosting frequency for the current cycle based on the first and second temperature change rates, and then performing defrosting based on the first defrosting frequency. This achieves dynamic adjustment of the defrosting frequency according to actual indoor temperature changes, reducing defrosting energy consumption and improving indoor thermal comfort.

[0143] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0144] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure, and are not intended to unduly limit this disclosure.

[0145] Figure 1 A flowchart of a defrosting control method provided in this embodiment of the present disclosure;

[0146] Figure 2 A flowchart of another defrosting control method provided in this disclosure embodiment;

[0147] Figure 3 A flowchart of another defrosting control method provided in this disclosure embodiment;

[0148] Figure 4A flowchart of another defrosting control method provided in this disclosure embodiment;

[0149] Figure 5 A flowchart of another defrosting control method provided in this disclosure embodiment;

[0150] Figure 6 A flowchart of another defrosting control method provided in this disclosure embodiment;

[0151] Figure 7 A flowchart of another defrosting control method provided in this disclosure embodiment;

[0152] Figure 8 A flowchart illustrating the entire defrosting control process provided in this embodiment of the disclosure;

[0153] Figure 9 This is a schematic diagram of the structure of a defrosting control device provided in an embodiment of the present disclosure;

[0154] Figure 10 This is a schematic diagram of another defrosting control device provided in an embodiment of the present disclosure;

[0155] Figure 11 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure;

[0156] Figure 12 This is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure;

[0157] Figure 13 This is a schematic diagram of another chip structure provided in an embodiment of this disclosure. Detailed Implementation

[0158] Embodiments of this disclosure are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0159] During the operation of heat exchange equipment (such as air conditioners), frost will gradually accumulate on the heat exchanger. The frost will affect the heat exchange efficiency of the equipment, so it is necessary to defrost the heat exchanger.

[0160] Among the defrosting control technologies, defrosting control is usually relatively crude, not comfortable enough, and consumes a lot of energy.

[0161] Therefore, to address the problems existing in related technologies, this disclosure proposes a defrosting control method. When the heat exchange equipment enters defrosting mode, it acquires the first temperature change rate of the indoor environment in the current cycle and the second temperature change rate of the previous cycle. Based on the first and second temperature change rates, a first defrosting frequency for the current cycle is determined, and defrosting is then performed based on this first defrosting frequency. This achieves dynamic adjustment of the defrosting frequency according to actual indoor temperature changes, reducing defrosting energy consumption and improving indoor thermal comfort.

[0162] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0163] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0164] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0165] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0166] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0167] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0168] The prefixes such as "first" and "second" in the embodiments of this disclosure are only for distinguishing different descriptive objects and do not constitute restrictions on the position, order, priority, number or content of the descriptive objects. For the description of the descriptive objects, please refer to the description in the claims or the context of the embodiments. The use of prefixes should not constitute unnecessary restrictions.

[0169] In the embodiments disclosed herein, "multiple" refers to two or more.

[0170] In the embodiments disclosed herein, terms such as “import”, “input”, and “read in” can be used interchangeably.

[0171] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0172] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0173] Figure 1 A flowchart of a defrosting control method provided in this disclosure embodiment is shown below. Figure 1 As shown, the defrosting control method includes steps 101-103.

[0174] Step 101: In response to the heat exchange device entering defrost mode, obtain the first temperature change rate of the indoor environment where the heat exchange device is located in the current cycle, and obtain the second temperature change rate of the previous cycle of the current cycle.

[0175] Heat exchange equipment refers to devices with heat exchange functions. Their main purpose is to exchange heat between indoor and outdoor environments to regulate comfort indicators such as indoor temperature and humidity. Heat exchange equipment includes, but is not limited to, air conditioners, refrigeration and freezing equipment, and cooling systems.

[0176] Defrosting mode refers to the mode in which the heat exchange equipment, in heating mode, eliminates frost and resumes normal operation by reversing its operation or heating when the external ambient temperature is too low or frost forms on the surface of the heat exchanger. The first temperature change rate refers to the rate at which the indoor ambient temperature changes over time within the current cycle. The first temperature change rate is typically calculated from temperature change data at multiple time points. The second temperature change rate refers to the rate at which the indoor ambient temperature changes over time in the previous cycle. Compared to the first temperature change rate, the second temperature change rate reflects the temperature change trend in the previous cycle. The current cycle refers to a continuous time period divided by fixed time intervals (e.g., 10 minutes) used for dynamically monitoring indoor environmental parameters. The previous cycle refers to the preceding time interval adjacent to the current cycle, used for comparing temperature change trends. This disclosure does not limit the specific value of the fixed time interval.

[0177] The heat exchange equipment collects indoor temperature data in real time using built-in temperature sensors. The equipment divides the collected data into time periods, each period constituting a cycle. Within each cycle, the equipment records temperature changes and calculates the rate of temperature change.

[0178] The rate of temperature change can be calculated using formula (1):

[0179]

[0180] Where V is the rate of temperature change, and T n Let T1 be the third indoor temperature in any period n, T2 be the second indoor temperature when the heat exchange equipment is turned on, and Δt be the operating time of the heat exchange equipment when it has been running continuously for any period n. The rate of temperature change can be the rate of temperature rise.

[0181] For example, the rate of temperature change can also be calculated by dividing the difference in temperature data within the period by the time difference. For instance, if the temperature changes from T2 to T3 within the current period, and the time interval is t, then the first rate of temperature change is (T2-T3) / t. However, it should be clear that this statement is not intended to limit the rate of temperature change to the above method; it can also be achieved by other methods.

[0182] By acquiring and analyzing the rate of change of indoor temperature in the current and previous cycles, we can more accurately understand the dynamic changes in indoor ambient temperature and the impact of equipment operation on indoor temperature. This provides reliable data support for determining a reasonable defrosting frequency, enabling the defrosting process to more accurately adapt to different indoor environmental conditions and equipment operating conditions, avoiding over-defrosting or under-defrosting, thereby improving the defrosting effect and operating efficiency of heat exchange equipment.

[0183] Step 102: Determine the first defrosting frequency of the heat exchange device in the current cycle based on the first temperature change rate and the second temperature change rate.

[0184] The first defrosting frequency refers to the frequency at which the heat exchange equipment defrosts in the current cycle. The defrosting frequency determines the operating rhythm of the heat exchange equipment in defrosting mode. A higher defrosting frequency means that the equipment performs more defrosting operations per unit time or that the energy output during the defrosting process is more frequent, which will make the defrosting speed faster, but will also increase energy consumption accordingly; a lower defrosting frequency, on the contrary, will make the defrosting speed relatively slower, but will reduce energy consumption relatively.

[0185] If the first temperature change rate is less than the second temperature change rate, it indicates that the frost layer is thickening, which leads to a decrease in heat exchange efficiency, and the defrosting frequency needs to be increased; if the first temperature change rate is greater than the second temperature change rate, it indicates that the frost layer is decreasing or the heat load is decreasing, and the defrosting frequency can be reduced; if the first temperature change rate is equal to the second temperature change rate, it indicates that the frost layer is stable, and the current defrosting frequency should be maintained.

[0186] By dynamically adjusting the frequency, the indoor temperature is prevented from dropping suddenly during defrosting, resulting in smaller fluctuations in the perceived temperature for users and improved thermal comfort.

[0187] Step 103: Based on the first defrosting frequency, perform defrosting treatment on the heat exchange equipment.

[0188] Defrosting refers to the process in heat exchange equipment where, when frost forms on the surface of the heat exchanger and affects the heat exchange effect, the frost layer is melted by reversing the operation, heating, or other methods, thereby restoring the equipment to normal operation.

[0189] Based on the initial defrosting frequency, the operating parameters of the heat exchange equipment are adjusted accordingly. For example, the compressor speed is controlled to achieve the operating state corresponding to the initial defrosting frequency. If the initial defrosting frequency is high, it may be necessary to increase the compressor speed to enhance refrigerant circulation and accelerate defrosting; if the frequency is low, the compressor speed is appropriately reduced to decrease energy consumption. Simultaneously, the fan speed is adjusted to coordinate with the compressor operation, ensuring effective heat exchange and frost melting during the defrosting process. During defrosting, the operating status of other related components (such as four-way valves and solenoid valves) also needs to be controlled to achieve the best defrosting effect.

[0190] During the defrosting process, the operating status of the heat exchange equipment is monitored in real time, including parameters such as heat exchanger temperature, indoor temperature, and outdoor temperature. By monitoring changes in the heat exchanger temperature, the melting status of the frost can be determined. For example, when the heat exchanger temperature continues to rise and reaches a certain threshold, it may indicate that the frost has largely melted. Simultaneously, indoor temperature changes are monitored to ensure that the defrosting process does not have an excessive impact on the indoor environment, such as keeping indoor temperature fluctuations within a reasonable range.

[0191] The defrosting termination conditions are set, such as the defrosting time reaching a second preset time threshold, or the heat exchanger temperature reaching a third preset temperature threshold. When the defrosting termination conditions are met, the control system issues a command to cause the heat exchange equipment to exit defrosting mode and resume normal operation.

[0192] A reasonable initial defrosting frequency can avoid problems such as over-defrosting or under-defrosting. This reduces unnecessary energy consumption while ensuring effective defrosting.

[0193] In summary, the defrosting control method proposed in this disclosure includes acquiring, when the heat exchange equipment enters defrosting mode, a first temperature change rate of the indoor environment in the current cycle and a second temperature change rate of the previous cycle, determining a first defrosting frequency for the current cycle based on the first and second temperature change rates, and then performing defrosting based on the first defrosting frequency. This achieves dynamic adjustment of the defrosting frequency according to actual indoor temperature changes, reducing defrosting energy consumption and improving indoor thermal comfort.

[0194] As a refinement of step 101, when controlling the heat exchange device to enter the defrost mode, it can be implemented in the following ways, but not limited to: obtaining the first indoor temperature of the indoor environment in the current cycle, the first heat exchanger temperature of the heat exchange device, the set temperature of the heat exchange device, and the start-up running time of the heat exchange device; and controlling the heat exchange device to enter the defrost mode based on the first indoor temperature, the first heat exchanger temperature, the set temperature, and the start-up running time.

[0195] The first indoor temperature refers to the temperature of the indoor environment in the current cycle, reflecting the current indoor heat load status; the first heat exchanger temperature refers to the temperature of the heat exchanger surface in the current cycle, used to determine the degree of frost accumulation; the set temperature refers to the target indoor temperature set by the user through the remote control or control panel, representing thermal comfort requirements; in this embodiment, the start-up running time can be the cumulative running time of the heat exchange equipment from start-up to the current cycle, used to evaluate the frost growth cycle.

[0196] During each cycle, the heat exchange equipment monitors the indoor temperature in real time using temperature sensors installed indoors. These sensors are typically located in key locations within the room (such as the center or an area near the heat exchange equipment) and acquire initial indoor temperatures by periodically collecting data. Temperature sensors within the heat exchange equipment directly monitor the heat exchanger temperature. These sensors are usually installed at the heat exchanger inlet and outlet, providing real-time feedback on the heat exchanger's operating status. The set temperature is usually preset by the user through the equipment control panel or automatically set by the intelligent adjustment system. The set temperature can be the target temperature that the equipment needs to maintain during the current cycle. The temperature sensors, through their runtime recording function, track the start-up time of the heat exchange equipment and the end time of the current cycle, calculating the continuous operating time of the temperature sensors, i.e., the continuous runtime. This continuous runtime can be recorded by the heat exchange equipment control system, automatically generating data each time the heat exchange equipment completes a working cycle.

[0197] In the control system of the heat exchange equipment, a series of preset judgment conditions and logical algorithms are used to analyze the relationship between the first indoor temperature, the first heat exchanger temperature, the set temperature, and the operating time. For example, when the first heat exchanger temperature is below a certain low-temperature threshold (e.g., 0℃), the operating time exceeds a certain period (e.g., 1 hour), and the difference between the first indoor temperature and the set temperature begins to increase (e.g., exceeding 2℃), the control system determines that a certain thickness of frost may have accumulated on the surface of the heat exchanger, affecting the heat exchange efficiency, and defrosting is required. When the control system determines that the requirements for entering the defrosting mode are met based on the above conditions, it automatically controls the heat exchange equipment to enter the defrosting mode. In the defrosting mode, the heat exchange equipment will take corresponding defrosting measures, such as starting the electric heating device and changing the refrigerant flow direction, to remove the frost layer on the surface of the heat exchanger and restore the normal operating state of the heat exchange equipment.

[0198] By intelligently controlling the defrosting mode based on indoor temperature, heat exchanger temperature, set temperature, and equipment operating time, frost can be effectively removed, ensuring efficient heat exchange of the heat exchanger and preventing frost buildup that leads to decreased efficiency.

[0199] This disclosure presents a flowchart of a defrosting control method. Based on Figure 1The embodiments shown further explain the above embodiments. Figure 2 This may include the following steps:

[0200] Step 201: Based on the startup running time and the temperature of the first heat exchanger, determine whether the heat exchanger of the heat exchange equipment is in the first frost state; the first frost state is the state in which there is a frost layer on the heat exchanger that is less than a preset thickness.

[0201] The temperature of the heat exchanger is monitored in real time by temperature sensors on the heat exchange equipment to obtain the temperature of the first heat exchanger. Simultaneously, the operating time is recorded using an internal timer to obtain the start-up running time. Preset heat exchanger temperature thresholds and running time thresholds, determined based on extensive experiments and equipment operating experience, are used to determine the critical conditions for frost formation. For example, the preset heat exchanger temperature threshold is 2℃, and the preset running time threshold is 30 minutes. During the operation of the heat exchange equipment, the temperature of the first heat exchanger is compared in real time with the preset heat exchanger temperature thresholds, and it is determined whether the start-up running time has reached the preset running time threshold. If the temperature of the first heat exchanger is lower than the preset temperature threshold and the start-up running time reaches or exceeds the preset running time threshold, the heat exchanger is considered to be in the first frost state. For example, when the heat exchanger temperature is consistently below 2℃ and the equipment has been running continuously for 30 minutes or longer, it can be determined that a thin layer of frost has formed on the heat exchanger. Once it is determined that the heat exchanger is in the first frost state, this determination result is output to the control system of the heat exchange equipment. Based on this result, the control system decides whether further measures are needed, such as entering defrosting mode or adjusting operating parameters, to prevent the frost layer from thickening further and affecting equipment performance. In this embodiment, the specific value of the preset thickness is limited.

[0202] Once the first frost layer is detected in time, measures can be taken in advance, such as adjusting the operating mode or preparing to enter the defrosting process, to prevent the frost layer from becoming too thick and causing a significant drop in heat exchanger performance.

[0203] Step 202: If the heat exchanger is in the first frost state, then determine whether the indoor environment is in a preset thermal comfort state based on the first indoor temperature and the set temperature; the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to a first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than a first preset temperature difference threshold.

[0204] To facilitate understanding, an example is provided: when the heat exchanger is in the first frost state, check whether the first indoor temperature is ≥24℃, and calculate whether the absolute value of the temperature difference between the set temperature and the first indoor temperature is <1℃. If both conditions are met, the indoor environment is determined to be in the preset thermal comfort state.

[0205] The embodiments disclosed herein do not limit the specific values ​​of the first preset temperature threshold and the first preset temperature difference threshold.

[0206] Ensure that the indoor temperature is maintained within a comfortable range, avoid indoor temperature fluctuations caused by frost treatment, and guarantee the thermal comfort of users.

[0207] Step 203: If the indoor environment is in the preset thermal comfort state, then control the heat exchange device to enter the defrosting mode.

[0208] By ensuring that defrosting only occurs when the indoor environment is at a thermally comfortable level, excessive fluctuations in indoor temperature caused by frequent or inappropriate defrosting are avoided, thus preventing negative impacts on user comfort. For example, in cold weather, if the air conditioner enters defrosting mode before the indoor temperature reaches a comfortable level, the indoor temperature may drop sharply, causing discomfort to the user. This disclosed embodiment enables defrosting while maintaining indoor warmth and comfort, reducing the impact of the defrosting process on indoor temperature.

[0209] This disclosure presents a flowchart of a defrosting control method. Based on Figure 2 The illustrated embodiment further explains step 201. Figure 3 This may include the following steps:

[0210] Step 301: Obtain the first outdoor temperature of the outdoor environment where the heat exchange device is located.

[0211] The first outdoor temperature refers to the air temperature of the environment surrounding the heat exchange equipment, which is collected in real time by the outdoor temperature sensor of the heat exchange equipment, and is expressed in degrees Celsius. The first outdoor temperature reflects the heat load status of the outdoor environment when the heat exchange equipment is operating.

[0212] Changes in outdoor temperature directly affect the operating efficiency and cooling / heating performance of heat exchange equipment. By acquiring real-time outdoor temperature data, the air conditioning control system can automatically adjust operating parameters such as compressor speed and fan speed according to different outdoor temperature conditions, ensuring that the air conditioner is always in optimal operating condition, improving cooling / heating speed and performance, and enhancing user comfort.

[0213] Step 302: If the start-up running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is within the first preset temperature range, then the heat exchanger is determined to be in the first frost state.

[0214] The first preset duration threshold refers to a pre-set lower limit for continuous operation time (e.g., 2 hours), used to determine whether the equipment has run for a sufficient duration to generate a risk of frost accumulation. This embodiment of the present disclosure does not limit the specific value of the first preset duration threshold. The first preset temperature range refers to a pre-set temperature difference range (e.g., -5℃ to 5℃), used to determine whether the temperature difference between the outdoor temperature and the heat exchanger temperature is within a reasonable range, to assist in identifying frost formation conditions. This embodiment of the present disclosure does not limit the specific value of the first preset temperature range.

[0215] For ease of understanding, an example is provided. Assume that the startup duration is 10 minutes, the first preset duration threshold is 9 minutes, the first outdoor temperature is 5 degrees Celsius, the first heat exchanger temperature is 2 degrees Celsius, and the first preset temperature range is 2 to 5 degrees Celsius. Then, the heat exchanger is determined to be in the first frost state.

[0216] By combining runtime and temperature difference to determine the frost condition, it is possible to more accurately identify whether the operating efficiency of heat exchange equipment is affected by frost.

[0217] Step 303: If the startup running time is less than the first preset time threshold, then it is determined that the heat exchanger is not in the first frost state.

[0218] For ease of understanding, an example is provided: assuming the startup time is 8 minutes and the first preset time threshold is 9 minutes, it is determined that the heat exchanger is not in the first frost state.

[0219] In the initial stage of operation of heat exchange equipment, due to the short operating time, it is unlikely that a frost layer of sufficient thickness to reach the first frost layer state will form on the heat exchanger. Therefore, by directly comparing the start-up operating time with a first preset time threshold, it can be quickly and easily determined that the heat exchanger is not in the first frost layer state, avoiding complex temperature difference calculations and judgments, simplifying the frost layer state judgment logic, and improving the operating efficiency of the control system.

[0220] This disclosure presents a flowchart of a defrosting control method. Based on Figure 2 The illustrated embodiment further explains step 201. Figure 4 This may include the following steps:

[0221] Step 401: If the start-up running time is greater than or equal to the first preset time threshold, and the temperature of the first heat exchanger is within the second preset temperature range, then the heat exchanger is determined to be in the first frost state.

[0222] The second preset temperature range is a pre-defined temperature range used to determine whether the temperature of the first heat exchanger meets the conditions for frost formation. For example, it can be set to 2 to 5 degrees Celsius.

[0223] For ease of understanding, an example is provided: assuming the startup time is 10 minutes, the first preset time threshold is 9 minutes, the first heat exchanger temperature is 2 degrees Celsius, and the second preset temperature range is 2 to 5 degrees Celsius, then the heat exchanger is determined to be in the first frost state.

[0224] By determining the appropriate duration and temperature, the defrosting process can be initiated only when the equipment is indeed covered in frost, thus avoiding unnecessary defrosting operations and improving the working efficiency of the heat exchange equipment.

[0225] Step 402: If the start-up running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is not within the first preset temperature range, then it is determined that the heat exchanger is not in the first frost state.

[0226] For ease of understanding, an example is provided: assuming the startup duration is 10 minutes, the first preset duration threshold is 9 minutes, the first outdoor temperature is 8 degrees Celsius, the first heat exchanger temperature is 2 degrees Celsius, and the first preset temperature range is 2 to 5 degrees Celsius, then it is determined that the heat exchanger is not in the first frost state.

[0227] Step 403: If the startup running time is greater than or equal to the first preset time threshold, and the temperature of the first heat exchanger is not within the second preset temperature range, then it is determined that the heat exchanger is not in the first frost state.

[0228] For ease of understanding, an example is provided: assuming the startup time is 10 minutes, the first preset time threshold is 9 minutes, the first heat exchanger temperature is 6 degrees Celsius, and the second preset temperature range is 2 to 5 degrees Celsius, then it is determined that the heat exchanger is not in the first frost state.

[0229] This disclosure presents a flowchart of a defrosting control method. Based on Figure 2 The illustrated embodiment further explains step 202. Figure 5 This may include the following steps:

[0230] Step 501: If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, then the indoor environment is determined to be in the preset thermal comfort state.

[0231] For ease of understanding, an example is provided: assuming a first indoor temperature of 25 degrees Celsius, a first preset temperature threshold of 25 degrees Celsius, a set temperature of 26 degrees Celsius, and a first preset temperature difference threshold of 3 degrees Celsius, the indoor environment is determined to be in a preset thermal comfort state. This embodiment does not limit the specific values ​​of the first preset temperature threshold and the first preset temperature difference threshold.

[0232] By accurately determining whether the indoor environment is in a thermally comfortable state, the system can provide users with a more comfortable temperature control experience. The system can ensure that the indoor temperature is close to the ideal comfort range, provided it does not exceed the set temperature difference threshold.

[0233] Step 502: If the first indoor temperature is less than the first preset temperature threshold, then it is determined that the indoor environment is not in the preset thermal comfort state.

[0234] For ease of understanding, an example is provided: assuming the first indoor temperature is 24 degrees Celsius and the first preset temperature threshold is 25 degrees Celsius, then it is determined that the indoor environment is not in the preset thermal comfort state.

[0235] Step 503: If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is greater than or equal to the first preset temperature difference threshold, then it is determined that the indoor environment is not in the preset thermal comfort state.

[0236] For ease of understanding, an example is provided: assuming the first indoor temperature is 25 degrees Celsius, the first preset temperature threshold is 25 degrees Celsius, the set temperature is 29 degrees Celsius, and the first preset temperature difference threshold is 3 degrees Celsius, then it is determined that the indoor environment is not in the preset thermal comfort state.

[0237] As a refinement of step 202, when determining whether the indoor environment is in a preset thermal comfort state, the following methods can be used, but are not limited to: determining whether the indoor environment is in the preset thermal comfort state based on the first indoor temperature and the first temperature change rate; the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, or the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is greater than or equal to a preset rate threshold.

[0238] The preset rate threshold is a preset rate value used to determine whether the rate of change of indoor temperature is too fast. When the first temperature change rate is greater than or equal to the preset rate threshold, it indicates that the temperature change is too drastic, thereby affecting indoor comfort. This disclosure does not limit the specific value of the preset rate threshold.

[0239] Determine whether the first indoor temperature is greater than or equal to a first preset temperature threshold. If yes, further determine whether the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold. If yes, determine that the indoor environment is in a preset thermal comfort state. If no, continue to determine whether the first temperature change rate is greater than or equal to a preset rate threshold. If yes, determine that the indoor environment is in a preset thermal comfort state. If no, determine that the indoor environment is not in a preset thermal comfort state.

[0240] By intelligently determining whether a preset thermal comfort state has been reached, the system can avoid unnecessary overheating or cooling, thereby achieving energy conservation and emission reduction. The system will only adjust the temperature or rate when the indoor temperature does not meet the comfort standard, ensuring efficient energy use.

[0241] As a refinement of the above embodiments, when performing the step of determining whether the indoor environment is in the preset thermal comfort state based on the first indoor temperature and the first temperature change rate, the following methods can be used, but are not limited to: if the first indoor temperature is greater than or equal to the first preset temperature threshold and the first temperature change rate is greater than or equal to the preset rate threshold, then the indoor environment is determined to be in the preset thermal comfort state; if the first indoor temperature is greater than or equal to the first preset temperature threshold and the first temperature change rate is less than the preset rate threshold, then the indoor environment is determined not to be in the preset thermal comfort state.

[0242] For ease of understanding, an example is provided. Assume the first indoor temperature is 25 degrees Celsius, the first preset temperature threshold is 25 degrees Celsius, the first temperature change rate is 2 degrees Celsius / minute, and the preset rate threshold is 1 degree Celsius / minute. Then the indoor environment is in a preset thermal comfort state. Conversely, if the first indoor temperature is 25 degrees Celsius, the first preset temperature threshold is 25 degrees Celsius, the first temperature change rate is 0.5 degrees Celsius / minute, and the preset rate threshold is 1 degree Celsius / minute, then the indoor environment is not in a preset thermal comfort state.

[0243] In practical applications, there may be situations where the indoor environment is not in the preset thermal comfort state. When the indoor environment is not in the preset thermal comfort state, the following methods can be used, but are not limited to: if the indoor environment is not in the preset thermal comfort state, then determine whether the heat exchanger is in the second frost state based on the temperature of the first heat exchanger; the second frost state is the state where there is a frost layer on the heat exchanger that is greater than or equal to the preset thickness; if the heat exchanger is in the second frost state, then control the heat exchange equipment to enter the defrosting mode.

[0244] If the indoor environment is not in the preset thermal comfort state, the system determines whether the heat exchanger is in the second frost state based on the temperature of the first heat exchanger. For example, if the temperature of the first heat exchanger is lower than the second preset temperature threshold (e.g., 0°C), and other frost detection methods (e.g., frost sensor detection, comprehensive judgment based on running time and heat exchanger temperature changes) further determine that the frost thickness on the heat exchanger is greater than or equal to the preset thickness, then the heat exchanger is determined to be in the second frost state, and the control system controls the heat exchange equipment to enter defrosting mode.

[0245] When the frost layer on the heat exchanger surface is too thick, it can lead to a significant decrease in heat exchange efficiency and may even cause equipment failure. Automated frost detection and defrosting mode control can prevent equipment damage or operational instability caused by frost accumulation.

[0246] As a refinement of the above embodiments, when determining whether the heat exchanger is in the second frost state based on the temperature of the first heat exchanger, the following methods can be used, but are not limited to: if the temperature difference between the first outdoor temperature and the first heat exchanger temperature is less than a second preset temperature difference threshold, then the heat exchanger is determined to be in the second frost state; the second preset temperature difference threshold is less than any temperature within the first preset temperature range; if the temperature difference between the first outdoor temperature and the first heat exchanger temperature is greater than or equal to the second preset temperature difference threshold, then the heat exchanger is determined not to be in the second frost state.

[0247] For ease of understanding, an example is provided. Assume the first outdoor temperature is 5 degrees Celsius, the first heat exchanger temperature is 5 degrees Celsius, and the second preset temperature difference threshold is 1 degree Celsius. Then, the heat exchanger is determined to be in the second frost state. Alternatively, assume the first outdoor temperature is 5 degrees Celsius, the first heat exchanger temperature is 4 degrees Celsius, and the second preset temperature difference threshold is 1 degree Celsius. Then, the heat exchanger is determined not to be in the second frost state.

[0248] As a refinement of the above embodiments, when performing the step of determining whether the heat exchanger is in the second frost state based on the temperature of the first heat exchanger, it can be implemented in the following ways, but is not limited to: if the temperature of the first heat exchanger is less than a second preset temperature threshold, then the heat exchanger is determined to be in the second frost state; the second preset temperature threshold is less than any temperature within a second preset temperature range; if the temperature of the first heat exchanger is greater than or equal to the second preset temperature threshold, then the heat exchanger is determined not to be in the second frost state.

[0249] For ease of understanding, an example is provided: assuming the first heat exchanger temperature is 0 degrees Celsius and the second preset temperature threshold is 1 degree Celsius, then the heat exchanger is determined to be in the second frost state. If the first heat exchanger temperature is 1 degree Celsius and the second preset temperature threshold is 1 degree Celsius, then the heat exchanger is determined not to be in the second frost state.

[0250] In practical applications, the method for calculating the rate of temperature change in any given period can be implemented in, but is not limited to, the following ways: obtaining the second indoor temperature of the indoor environment when the heat exchange equipment is turned on, the third indoor temperature of the indoor environment in any given period, and the operating time of the heat exchange equipment; and calculating the rate of temperature change in any given period based on the second indoor temperature, the third indoor temperature, and the operating time.

[0251] In this embodiment, the startup runtime can be the cumulative running time of the heat exchange device from startup to any cycle. For details of the implementation process of this embodiment, please refer to formula (1).

[0252] As a refinement of the above embodiments, when performing the calculation of the temperature change rate of any cycle based on the second indoor temperature, the third indoor temperature, and the operating time, it can be implemented in the following manner, but is not limited to: calculating the difference between the third indoor temperature and the second indoor temperature to obtain a first difference result; and calculating the quotient between the difference result and the operating time to obtain the temperature change rate of any cycle.

[0253] Specifically, the implementation process of this embodiment is a textual description of formula (1).

[0254] This disclosure presents a flowchart of a defrosting control method. Based on Figure 1 The illustrated embodiment further explains step 102. Figure 6 This may include the following steps:

[0255] Step 601: Obtain the second defrosting frequency of the previous cycle.

[0256] The second defrosting frequency refers to the defrosting frequency used by the heat exchange equipment in the previous cycle, and is used to measure the frequency of defrosting operations of the equipment in that cycle.

[0257] Step 602: Adjust the second defrosting frequency by increasing or decreasing the amount of increase or decrease based on the changes in the first temperature change rate and the second temperature change rate to obtain the first defrosting frequency.

[0258] If the first temperature change rate is less than the second temperature change rate, then proceed to step 603; if the first temperature change rate is greater than the second temperature change rate, then proceed to step 604; if the first temperature change rate is equal to the second temperature change rate, then proceed to step 605.

[0259] Step 603: Adjust the second defrosting frequency by increasing its amplitude to obtain the first defrosting frequency.

[0260] The first defrosting frequency can be obtained by adjusting the second defrosting frequency by increasing its magnitude until the increase reaches a first preset defrosting frequency change amount. Here, the first preset defrosting frequency change amount is a pre-set defrosting frequency adjustment value used to increase the current defrosting frequency under specific conditions to optimize the defrosting effect. However, it should be clarified that this statement is not intended to limit the adjustment of the second defrosting frequency to a single magnitude; the first defrosting frequency can be obtained using only the above method, but other methods can also be used.

[0261] For ease of understanding, an example is provided: assuming the first temperature change rate is 1 degree Celsius / minute, the second temperature change rate is 2 degrees Celsius / minute, the second defrosting frequency is 30, and the first preset defrosting frequency change amount is 10, then the first defrosting frequency is 40.

[0262] By adjusting the second defrosting frequency, the defrosting frequency can be dynamically adjusted based on the defrosting situation of the previous cycle and the current operating conditions, making the defrosting operation more precise and efficient, effectively removing the frost layer, improving heat exchange efficiency, and ensuring the normal operation and performance of the heat exchange equipment.

[0263] Step 604: Adjust the second defrosting frequency by a reduction to obtain the first defrosting frequency.

[0264] The first defrosting frequency can be obtained by reducing the second defrosting frequency until the reduction reaches the first preset defrosting frequency change amount. For ease of understanding, an example is provided: assuming the first temperature change rate is 2 degrees Celsius / minute, the second temperature change rate is 1 degree Celsius / minute, the second defrosting frequency is 30, and the first preset defrosting frequency change amount is 10, then the first defrosting frequency is 20. However, it should be clarified that this statement is not intended to limit the reduction of the second defrosting frequency; the first defrosting frequency can be obtained only through the above method, but can also be achieved through other methods.

[0265] By adjusting the second defrosting frequency, the defrosting frequency can be dynamically adjusted based on the defrosting situation of the previous cycle and the current operating conditions, thereby reducing defrosting energy consumption without affecting thermal comfort.

[0266] Step 605: Determine the second defrosting frequency as the first defrosting frequency.

[0267] For ease of understanding, an example is provided: assuming the first temperature change rate is 2 degrees Celsius / minute, the second temperature change rate is 2 degrees Celsius / minute, and the second defrosting frequency is 30, then the first defrosting frequency is 30.

[0268] As a refinement of step 602, when adjusting the second defrosting frequency based on the changes in the first and second temperature change rates to obtain the first defrosting frequency, the following methods can be used, but are not limited to: adjusting the increase or decrease of the second defrosting frequency based on the magnitude of the changes in the first and second temperature change rates; adjusting the second defrosting frequency based on the adjusted increase or decrease to obtain the first defrosting frequency; wherein the magnitude of the change is positively correlated with the increase or decrease.

[0269] The magnitude of the change refers to the difference between the rate of temperature change in the current cycle and the previous cycle, that is, the numerical difference between the first and second rate of temperature change. The greater the difference, the greater the magnitude of the change; the smaller the difference, the smaller the magnitude of the change. The increment or decrement refers to the magnitude used when adjusting the second defrosting frequency. The magnitude of the increment or decrement determines the degree of adjustment to the defrosting frequency. When the rate of temperature change has a large magnitude, the increment or decrement also increases accordingly, and vice versa.

[0270] During the operation of the heat exchange equipment, indoor environmental temperature data is collected in real time within the current cycle, and corresponding time information is recorded to calculate the first temperature change rate. Simultaneously, the temperature change rate data stored in the previous cycle, i.e., the second temperature change rate, is acquired. The magnitude of the change is determined by calculating the difference between the first and second temperature change rates. For example, if the first temperature change rate is 0.5℃ / min and the second temperature change rate is 0.3℃ / min, the magnitude of the change is 0.2℃ / min. A pre-defined correspondence between the magnitude of change and the increment / decrease is established; for example, for every increase of 0.1℃ / min in the magnitude of change, the increment / decrease increases by 10%. Based on the calculated magnitude of change and this correspondence, the current increment / decrease is determined. Assuming the magnitude of change is 0.2℃ / min, the increment / decrease increases by 20%. Based on the determined increment / decrease, the second defrosting frequency is adjusted to obtain the first defrosting frequency. For example, if the second defrosting frequency is once per hour, and the increment / decrease is 20%, the first defrosting frequency is adjusted to 1.2 times per hour. The adjusted first defrosting frequency will be used to guide the defrosting operation of the heat exchange equipment in the current cycle, such as controlling the defrosting time interval or defrosting duration.

[0271] The positive correlation between the magnitude of change and the magnitude of increase or decrease means that when the magnitude of the rate of temperature change increases, the magnitude of increase or decrease will also increase accordingly; conversely, when the magnitude of the rate of temperature change decreases, the magnitude of increase or decrease will also decrease accordingly. For example, if the magnitude of the rate of temperature change increases from 0.1℃ / min to 0.2℃ / min, the magnitude of increase or decrease will increase from 10% to 20%.

[0272] Based on a pre-defined positive correlation between the magnitude of the change and the increment / decrease range (e.g., for every 0.05℃ / minute increase in the magnitude of the change, the increment / decrease range increases by 5%), an initial increment / decrease range is determined. The influence of equipment operating status and environmental factors on the defrosting effect is considered, and the initial increment / decrease range is adjusted. For example, if the current outdoor temperature is low, the frost layer will be more difficult to melt; in this case, the increment / decrease range is appropriately increased to increase the defrosting frequency. If the equipment has been running for a long time, to avoid damage to the equipment from frequent start-ups and shutdowns, the increment / decrease range can be appropriately decreased. Based on the adjusted increment / decrease range, the second defrosting frequency is increased or decreased. If the adjusted increment / decrease range is positive, the corresponding range is increased to obtain the first defrosting frequency; if the adjusted increment / decrease range is negative, the corresponding range is decreased.

[0273] Based on the positive correlation between the magnitude of change and the magnitude of increase / decrease, and by adjusting the magnitude of increase / decrease in conjunction with actual factors, the first defrosting frequency can be determined more accurately. This allows the defrosting operation to better meet actual needs, avoids over- or under-defrosting, improves defrosting effectiveness, and reduces energy waste.

[0274] As a refinement of step 103, when performing the defrosting process on the heat exchange device based on the first defrosting frequency, it can be implemented in the following ways, but is not limited to: if the defrosting time at the first defrosting frequency reaches a second preset time threshold, then control the heat exchange device to exit the defrosting mode; the second preset time threshold is a comparison threshold for determining whether the heat exchange device has exited the defrosting mode.

[0275] Defrosting time refers to the length of time that the heat exchange equipment operates continuously at the first defrosting frequency. This embodiment does not limit the specific value of the second preset time threshold.

[0276] For ease of understanding, an example is provided: assuming the defrosting time is 2 minutes and the second preset time threshold is 1 minute, the heat exchange device is controlled to exit the defrosting mode.

[0277] Prevent excessively long defrosting times that could lead to energy waste and unnecessary equipment wear. Once defrosting is complete, promptly exit defrosting mode to allow the equipment to quickly return to normal operation, thus improving overall equipment efficiency.

[0278] In practical applications, the value of the second preset duration threshold is not fixed. It can be dynamically adjusted according to the actual defrosting situation. This can be achieved in ways that are not limited to the following: If the temperature of the second heat exchanger of the heat exchange equipment is less than a third preset temperature threshold before the defrosting time according to the first defrosting frequency reaches the second preset duration threshold, then the second preset duration threshold is summed with the first preset defrosting time increment, and the sum of the second preset duration threshold and the first preset defrosting time increment is used as the updated second preset duration threshold; the defrosting time according to the first defrosting frequency reaching the second preset duration threshold includes: the defrosting time according to the first defrosting frequency reaching the updated second preset duration threshold.

[0279] The second heat exchanger temperature refers to the real-time temperature of the heat exchanger during the defrosting process. It reflects the degree of frost melting and the heat exchange status of the heat exchanger. By obtaining the second heat exchanger temperature, the degree of frost melting can be determined more accurately. If the temperature does not reach the expected value, the defrosting time can be appropriately extended or the defrosting frequency adjusted to ensure that the frost is completely removed and improve heat exchange efficiency.

[0280] The first preset defrosting time increment is a pre-set time value used to extend the defrosting time under specific conditions to ensure that the frost layer is completely removed. This embodiment does not limit the specific value of the first preset defrosting time increment. If the frost layer on the equipment is not removed in time, it will lead to a decrease in heat exchange efficiency, thereby increasing energy consumption. By timely obtaining the first preset defrosting time increment and extending the defrosting time, the system can avoid energy waste and improve the energy efficiency of the equipment.

[0281] When the heat exchange equipment meets the defrosting conditions, the control system initiates the defrosting mode according to the first defrosting frequency, and simultaneously starts a timer to record the defrosting duration. The sum of the second preset duration threshold and the first preset defrosting duration increment is used as the updated second preset duration threshold, and the defrosting duration at the first defrosting frequency reaches the updated second preset duration threshold. For example, if the second preset duration threshold is 10 minutes and the first preset duration increment is 3 minutes, then the updated second preset duration threshold is 13 minutes. During the defrosting process, the control system monitors the defrosting duration in real time. If the defrosting duration does not reach the second preset duration threshold, defrosting continues at the first defrosting frequency until the defrosting duration is greater than or equal to the second preset duration threshold.

[0282] Proper defrosting reduces the extra burden on equipment caused by excessive frost, lowers wear and energy consumption, and helps extend the service life of heat exchange equipment.

[0283] As a refinement of step 103, when performing the defrosting process on the heat exchange equipment based on the first defrosting frequency, it can be implemented in, but is not limited to, the following ways:

[0284] Before the defrosting time according to the first defrosting frequency reaches the second preset time threshold, if the temperature of the second heat exchanger is greater than or equal to the third preset temperature threshold, then the second outdoor temperature of the outdoor environment where the heat exchange equipment is located and the chassis temperature of the heat exchange equipment are obtained; if the temperature difference between the second outdoor temperature and the chassis temperature is less than or equal to the third preset temperature difference threshold, then the heat exchange equipment is controlled to exit the defrosting mode.

[0285] The control system compares the measured temperature of the second heat exchanger with a third preset temperature threshold. If the temperature of the second heat exchanger is greater than or equal to the third preset temperature threshold before the defrosting time reaches the second preset time threshold (assuming the first defrosting frequency), it indicates that the frost layer may have largely melted. At this point, the second outdoor temperature and the chassis temperature are acquired. The temperature difference between the second outdoor temperature and the chassis temperature is calculated. If this temperature difference is less than or equal to the third preset temperature difference threshold, it indicates that the heat exchange between the outdoor environment and the heat exchanger chassis has reached equilibrium, and the frost layer has completely melted. The control system then issues a command to control the heat exchange equipment to exit defrosting mode and resume normal cooling or heating operation.

[0286] By monitoring the temperature of the second heat exchanger and comparing the temperature difference, it is possible to more accurately determine whether the frost layer has melted, avoiding problems caused by insufficient or excessive defrosting time, and improving the reliability of the defrosting process.

[0287] This disclosure presents a flowchart of a defrosting control method. Based on Figure 1 The illustrated embodiment further explains step 103. Figure 7 This may include the following steps:

[0288] Step 901: If the temperature difference between the second outdoor temperature and the chassis temperature is greater than the third preset temperature difference threshold, then obtain the second preset defrosting frequency change and the second preset defrosting time increment.

[0289] The third preset temperature difference threshold is a pre-set temperature difference value used to determine whether defrosting parameters need adjustment. When the actual temperature difference exceeds this threshold, it indicates that the current defrosting effect may be inadequate, and further defrosting operations are needed. The second preset defrosting frequency change is a pre-set defrosting frequency adjustment value. When it is necessary to enhance the defrosting effect, the current defrosting frequency is increased by this increment to improve defrosting efficiency. The second preset defrosting duration increment is a pre-set defrosting time extension value. When it is necessary to ensure that the frost layer is fully melted, the current defrosting time is extended by this duration to ensure thorough defrosting.

[0290] By monitoring the temperature difference in real time and obtaining incremental parameters, the defrosting frequency and duration can be adjusted in a timely manner to ensure that the frost layer melts completely, improve the defrosting effect, and maintain the heat exchange efficiency of the equipment.

[0291] Step 902: Sum the first defrosting frequency and the change in the second preset defrosting frequency, and use the sum of the first defrosting frequency and the change in the second preset defrosting frequency as the updated first defrosting frequency.

[0292] The current first defrost frequency is read from the storage module of the heat exchange device, and the second preset defrost frequency change is obtained from the preset parameter table. For example, the current first defrost frequency is 35, and the second preset defrost frequency change is 8. The sum of the first defrost frequency and the second preset defrost frequency change is taken as the updated first defrost frequency. In this example, the updated first defrost frequency is 35 + 8 = 43.

[0293] When the detected temperature difference is too large, increasing the defrosting frequency can more effectively remove the frost layer, avoid the reduction in heat exchange efficiency caused by excessive frost layer, and ensure the normal operation and performance of the equipment.

[0294] The updated first defrost frequency is an adjusted defrost frequency that will be used in subsequent defrost cycles. The updated first defrost frequency is determined based on the previous defrost frequency and current operating conditions, aiming to optimize defrosting performance and ensure efficient heat exchange by the heat exchanger.

[0295] By summing the changes in the first defrost frequency and the second preset defrost frequency as the updated first defrost frequency, the heat exchange equipment can dynamically adjust the defrost frequency according to actual operating conditions. This makes the defrosting operation more precise and efficient when facing frost layers of different thicknesses and different temperature conditions, enabling more thorough removal of frost layers and restoring the heat exchanger's heat exchange performance.

[0296] Step 903, the defrosting process of the heat exchange equipment based on the first defrosting frequency, includes: defrosting according to the updated first defrosting frequency until the defrosting duration is greater than or equal to the sum of the second preset duration threshold and the second preset defrosting duration increment.

[0297] The control system reads the updated first defrosting frequency from the device's storage module and performs defrosting accordingly. Simultaneously, it retrieves the second preset duration threshold and the second preset defrosting duration increment from the preset parameter table. For example, the updated first defrosting frequency is 43, the second preset duration threshold is 10 minutes, and the second preset defrosting duration increment is 5 minutes. The second preset duration threshold and the second preset defrosting duration increment are added together to obtain the sum of the second preset duration threshold and the second preset defrosting duration. In this example, the sum of the second preset duration threshold and the second preset defrosting duration is 15 minutes. The defrosting mode is initiated according to the updated first defrosting frequency, and a timer is started to record the defrosting duration. During the defrosting process, the control system monitors the defrosting duration in real time. If the defrosting duration does not reach the sum of the second preset duration threshold and the second preset defrosting duration, the updated first defrosting frequency continues until the defrosting duration is greater than or equal to the sum of the second preset duration threshold and the second preset defrosting duration.

[0298] Avoid the reduction of heat exchange efficiency caused by insufficient defrosting, reduce energy waste, and make the equipment operate more stably and efficiently.

[0299] In an implementable manner of the embodiments of the present disclosure, for a better understanding of the entire process of defrosting control, as Figure 8 shown, Figure 8 is a flowchart of the entire process of defrosting control provided by the embodiments of the present disclosure. During the heating operation, the heating continuous operation time (τh), the outdoor ambient temperature (tw), and the outdoor heat exchanger coil temperature (to) are detected in real time, and the frost layer thickness is determined according to tw - to or to. If τh ≥ τ0, and tw - to or to is within a certain temperature range, it is considered that the air conditioner is in a stable operation state, and at this time, only a thin layer of frost adheres to the outdoor heat exchanger coil. When determining the thin frost according to tw - to or to, the temperature range can be obtained through tests. Generally, the value ranges of Δt1 and Δt2 are 0 to 15°C, and Δt1 < Δt2; the value ranges of t1 and t2 are -10 to 0°C, and t1 < t2. Further, the thermal comfort state of the indoor environment is determined according to the detected indoor temperature (tn), the difference between the set temperature and the indoor temperature (ts - tn), or the temperature rise rate (the quotient of the difference between the indoor temperature and the indoor temperature at the start-up moment and the heating continuous operation time, Δtn / τh). If tn ≥ t3 (t3 is generally taken as 25°C), it is considered that the indoor ambient temperature meets the human thermal comfort requirements; if |ts - tn| < Δt3 at this time (the value range of Δt3 is 0 to 2°C), it is considered that the indoor temperature tn is relatively close to the set temperature ts; that is, the required indoor temperature is reached. If Δtn / τh ≥ a at this time (the value range of a is 0 to 10°C / min), it is considered that the temperature rise rate is relatively fast and the heat preservation performance of the building envelope is good. The temperature rise rate judges the temperature rise rate of the previous cycle. Generally, it refers to the temperature rise rate at the start of defrosting in the cycle when starting the next machine after defrosting. When tn ≥ t3, and |ts - tn| < Δt3 or Δtn / τh ≥ a (that is, when the indoor temperature meets 25°C, and it is necessary to meet that the indoor temperature is close to the set temperature or the indoor temperature rise speed is relatively fast), the defrosting control is entered, otherwise, the conventional defrosting control logic is judged. The temperature rise rate judgment is modified as follows: Judge that the heating start-up speed of cycle I and cycle II is a1 and a2 respectively. If a1 - a2 > 0, the compressor frequency increases for defrosting; if a1 - a2 < 0, the compressor frequency decreases for defrosting; if the conventional heating defrosting control conditions are met, the defrosting control is entered.

[0300] The entry conditions for conventional heating defrost control are also determined based on the difference between the outdoor ambient temperature and the outdoor heat exchanger coil temperature (tw - to) or the outdoor heat exchanger coil temperature (to). However, at this time, both tw - to and to are smaller than those during the above - mentioned defrost determination, and the frosting condition is worse. At this time, the frost layer on the outdoor heat exchanger is thicker, and the heating capacity has already started to decline. Both Δt4 and t4 are determined based on measured data, and Δt4 < Δt1, t4 < t1. After entering the defrost as described above: When the air conditioner switches from the heating mode to the defrost mode, the system changes from the heating operation state to the cooling operation state. At this time, the condenser of the outdoor unit of the air conditioner is responsible for absorbing heat, causing the frost on the outer coil surface to melt into water and drain out through the drainage holes on the chassis. However, if the moisture on the chassis cannot be completely drained, the remaining moisture will refreeze on the chassis, forming an ice layer. This icing phenomenon will hinder the thorough progress of the defrost process, thereby reducing the heating efficiency of the air conditioner and the comfort during use. Therefore, optimizing the drainage design to ensure that the moisture on the chassis is completely drained is the key to avoiding icing, improving the defrost effect, and enhancing the heating efficiency of the air conditioner.

[0301] Judge whether the defrost duration τ of the air conditioner meets the first defrost exit condition. If so, control the air conditioner to exit the defrost mode; where the first defrost exit condition is τ ≥ τm, and τm refers to the maximum defrost cycle that the air conditioner can maintain in a low - temperature environment. When the defrost cycle τ reaches or exceeds the preset maximum defrost cycle τm, the first defrost exit condition is met, that is, τ ≥ τm, indicating that the frost on the outdoor unit has completely melted, and continuing the defrost operation may reduce the heating efficiency indoors. Therefore, the system will trigger an instruction to exit the defrost mode to prevent unnecessary energy waste and indoor temperature fluctuations; if τ < τm, the system will enter the second - stage judgment. At this time, the temperature to of the outdoor unit coil will be detected, and it will be evaluated whether this temperature meets the second defrost exit condition; when to ≥ T1, the outdoor unit coil temperature to meets the second defrost exit condition; where T1 is the first threshold temperature. If τ < τm, it means that the frost on the outdoor unit of the air conditioner has not melted cleanly. Therefore, according to the magnitude relationship between the outdoor unit coil temperature to and the first threshold temperature T1, it is judged whether there is unfrozen frost at the outdoor unit coil. If to ≥ T1, it means that the temperature at the outer coil is high enough, that is, the frost at the outer coil has melted cleanly; if to < T1, it means that the temperature at the outer coil is not high enough, indicating that the frost at the outer coil has not completely melted. Then, continue to defrost at the current defrost frequency for the first preset duration τ1, and then judge whether the air conditioner exits the defrost mode based on the defrost duration τ of the air conditioner and the outdoor unit coil temperature to. Thus, it is ensured that the frost at the outer coil has completely melted before entering the next judgment process.

[0302] The third defrost exit condition is tw-td≤T2. Based on the relationship between the difference between the outdoor ambient temperature tw and the outdoor unit chassis temperature td and the second threshold temperature T2, it is determined whether there is any undefrosted ice on the chassis of the outdoor unit. If tw-td≤T2, the air conditioner exits defrost mode; if tw-td>T2, the defrost frequency f of the air conditioner is increased, and it runs at the increased defrost frequency for a second preset duration τ2, then it is determined whether the defrost duration τ meets the first defrost exit condition. If tw-td≤T2, it means there is a sufficiently low temperature difference between the outdoor unit chassis temperature and the outdoor ambient temperature, that is, the ice on the chassis has melted completely. At this time, the air conditioner is controlled to exit the defrosting mode. If tw-td>T2, it means the outdoor unit chassis temperature is much lower than the outdoor ambient temperature, that is, there is still unmelted ice on the chassis. At this time, the defrosting frequency of the air conditioner is increased, and the air conditioner runs at the increased defrosting frequency for a second preset duration τ2. Then, the air conditioner is controlled to defrost according to the defrosting duration τ and the outdoor unit coil temperature to.

[0303] By precisely adjusting the compressor's operating frequency to adapt to the rate of indoor temperature rise, this system can more effectively reduce energy consumption compared to systems operating at a fixed frequency. It implements a multi-level defrosting control strategy, comprehensively covering various situations that may occur during defrosting, thereby improving defrosting efficiency. By evaluating whether the air conditioner's defrosting cycle τ has reached the preset defrosting exit standard, it can accurately determine whether the frost on the outdoor unit has completely melted, avoiding the problems of reduced heating effect and decreased comfort caused by incomplete defrosting. Combining the outdoor unit chassis temperature and outdoor coil temperature data to determine whether to exit defrosting mode ensures that frost and ice on the outdoor coil and chassis have been completely removed when exiting defrosting mode, thereby improving defrosting thoroughness and avoiding reduced heating efficiency due to chassis icing. Through a two-stage control strategy to adjust the compressor frequency, it not only improves energy efficiency before defrosting but also achieves rational energy utilization during defrosting, ensuring that the system operates efficiently according to actual needs.

[0304] In summary, the embodiments disclosed herein can achieve the following beneficial effects:

[0305] The disclosed solution acquires the first temperature change rate of the indoor environment in the current cycle and the second temperature change rate in the previous cycle when the heat exchange equipment enters defrost mode. Based on the first and second temperature change rates, a first defrost frequency for the current cycle is determined, and defrosting is then performed based on this first defrost frequency. This achieves dynamic adjustment of the defrost frequency according to actual indoor temperature changes, reducing defrost energy consumption and improving indoor thermal comfort.

[0306] Corresponding to the defrosting control method described above, the present invention also proposes a defrosting control device. Since the device embodiments of the present invention correspond to the method embodiments described above, details not disclosed in the device embodiments can be referred to in the method embodiments described above, and will not be repeated here.

[0307] Figure 9 This is a schematic diagram of a defrosting control device 1000 provided in an embodiment of the present disclosure. The defrosting control device includes, but is not limited to, applications in refrigeration equipment (such as refrigeration and freezing equipment, industrial cooling systems) that rely on heat exchangers to prevent frost formation, such as household appliances, air conditioners, refrigerators, washing machines, and vehicles. The defrosting control device includes:

[0308] The rate acquisition unit 1001 is used to acquire the first temperature change rate of the indoor environment where the heat exchange equipment is located in the current cycle and the second temperature change rate of the previous cycle in the current cycle in response to the heat exchange equipment entering the defrosting mode.

[0309] The frequency determination unit 1002 is used to determine the first defrosting frequency of the heat exchange device in the current cycle based on the first temperature change rate and the second temperature change rate.

[0310] The defrosting unit 1003 is used to perform defrosting on the heat exchange equipment based on the first defrosting frequency.

[0311] According to the defrosting control device disclosed herein, the device includes acquiring a first temperature change rate of the indoor environment where the heat exchange equipment is located in the current cycle and a second temperature change rate of the previous cycle when the heat exchange equipment enters defrosting mode; determining a first defrosting frequency for the current cycle based on the first and second temperature change rates; and then performing defrosting based on the first defrosting frequency. This achieves dynamic adjustment of the defrosting frequency according to actual indoor temperature changes, reducing defrosting energy consumption and improving indoor thermal comfort.

[0312] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the device further includes:

[0313] The data acquisition unit 1004 is used to acquire the first indoor temperature of the indoor environment in the current cycle, the first heat exchanger temperature of the heat exchange device, the set temperature of the heat exchange device, and the start-up running time of the heat exchange device.

[0314] The defrosting control unit 1005 is used to control the heat exchange equipment to enter the defrosting mode based on the first indoor temperature, the first heat exchanger temperature, the set temperature and the start-up running time.

[0315] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the defrosting control unit 1005 includes:

[0316] The first state determination module 10051 is used to determine whether the heat exchanger of the heat exchange equipment is in the first frost state based on the start-up running time and the temperature of the first heat exchanger; the first frost state is the state in which there is a frost layer on the heat exchanger that is less than a preset thickness.

[0317] The second state determination module 10052 is used to determine whether the indoor environment is in a preset thermal comfort state based on the first indoor temperature and the set temperature when the heat exchanger is in the first frost state; the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to a first preset temperature threshold and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than a first preset temperature difference threshold.

[0318] The defrosting control module 10053 is used to control the heat exchange equipment to enter the defrosting mode when the indoor environment is in the preset thermal comfort state.

[0319] Furthermore, in one possible implementation of this disclosure embodiment, the first state determination module 10051 is used for:

[0320] Obtain the first outdoor temperature of the outdoor environment where the heat exchange equipment is located;

[0321] When the start-up running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is within the first preset temperature range, the heat exchanger is determined to be in the first frost state.

[0322] When the startup running time is less than the first preset time threshold, it is determined that the heat exchanger is not in the first frost state.

[0323] Furthermore, in one possible implementation of this disclosure embodiment, the first state determination module 10051 is used for:

[0324] When the start-up running time is greater than or equal to the first preset time threshold, and the temperature of the first heat exchanger is within the second preset temperature range, the heat exchanger is determined to be in the first frost state.

[0325] When the start-up running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is not within the first preset temperature range, it is determined that the heat exchanger is not in the first frost state.

[0326] When the start-up running time is greater than or equal to the first preset time threshold, and the temperature of the first heat exchanger is not within the second preset temperature range, it is determined that the heat exchanger is not in the first frost state.

[0327] Furthermore, in one possible implementation of this disclosure embodiment, the second state determination module 10052 is used for:

[0328] When the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, the indoor environment is determined to be in the preset thermal comfort state.

[0329] When the first indoor temperature is less than the first preset temperature threshold, it is determined that the indoor environment is not in the preset thermal comfort state.

[0330] When the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is greater than or equal to the first preset temperature difference threshold, it is determined that the indoor environment is not in the preset thermal comfort state.

[0331] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the second state determination module 10052 includes:

[0332] The state determination submodule 100521 is used to determine whether the indoor environment is in the preset thermal comfort state based on the first indoor temperature and the first temperature change rate; the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, or the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold and the first temperature change rate is greater than or equal to a preset rate threshold.

[0333] Furthermore, in one possible implementation of this disclosure embodiment, the state determination submodule 100521 is used for:

[0334] When the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is greater than or equal to the preset rate threshold, the indoor environment is determined to be in the preset thermal comfort state.

[0335] When the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is less than the preset rate threshold, it is determined that the indoor environment is not in the preset thermal comfort state.

[0336] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the device further includes:

[0337] The state determination unit 1006 is used to determine whether the heat exchanger is in a second frost state based on the temperature of the first heat exchanger when the indoor environment is not in the preset thermal comfort state; the second frost state is the state in which there is a frost layer on the heat exchanger that is greater than or equal to the preset thickness.

[0338] The defrosting control unit 1005 is used to control the heat exchange equipment to enter the defrosting mode when the heat exchanger is in the second frost layer state.

[0339] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the state determination unit 1006 includes:

[0340] The third state determination module 10061 is used to determine that the heat exchanger is in the second frost state when the temperature difference between the first outdoor temperature and the first heat exchanger temperature is less than a second preset temperature difference threshold; the second preset temperature difference threshold is less than any temperature within the first preset temperature range.

[0341] The third state determination module 10061 is used to determine that the heat exchanger is not in the second frost state when the temperature difference between the first outdoor temperature and the first heat exchanger temperature is greater than or equal to the second preset temperature difference threshold.

[0342] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the state determination unit 1006 includes:

[0343] The third state determination module 10061 is used to determine that the heat exchanger is in the second frost state when the temperature of the first heat exchanger is less than the second preset temperature threshold; the second preset temperature threshold is less than any temperature within the second preset temperature range.

[0344] The third state determination module 10061 is used to determine that the heat exchanger is not in the second frost state when the temperature of the first heat exchanger is greater than or equal to the second preset temperature threshold.

[0345] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the device further includes:

[0346] The data acquisition unit 1004 is used to acquire the second indoor temperature of the indoor environment when the heat exchange equipment is turned on, the third indoor temperature of the indoor environment in any cycle, and the operating time of the heat exchange equipment.

[0347] The rate calculation unit 1007 is used to calculate the temperature change rate of any cycle based on the second indoor temperature, the third indoor temperature and the start-up running time.

[0348] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the rate calculation unit 1007 includes:

[0349] The difference calculation module 10071 is used to calculate the difference between the third indoor temperature and the second indoor temperature to obtain a first difference result.

[0350] The rate calculation module 10072 is used to calculate the quotient between the difference result and the power-on running time to obtain the temperature change rate of any cycle.

[0351] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the frequency determination unit 1002 includes:

[0352] The frequency acquisition module 10021 is used to acquire the second defrosting frequency of the previous cycle;

[0353] The frequency adjustment module 10022 is used to adjust the second defrosting frequency by increasing or decreasing the magnitude of the increase or decrease based on the changes in the first temperature change rate and the second temperature change rate, so as to obtain the first defrosting frequency.

[0354] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the frequency adjustment module 10022 is used for:

[0355] When the first temperature change rate is less than the second temperature change rate, the second defrosting frequency is adjusted by increasing the frequency to obtain the first defrosting frequency.

[0356] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the frequency adjustment module 10022 is used for:

[0357] When the first temperature change rate is greater than the second temperature change rate, the second defrosting frequency is adjusted by reducing the amplitude to obtain the first defrosting frequency.

[0358] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the frequency adjustment module 10022 is used for:

[0359] When the first temperature change rate is equal to the second temperature change rate, the second defrosting frequency is determined as the first defrosting frequency.

[0360] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the frequency adjustment module 10022 is used for:

[0361] The increase or decrease of the second defrosting frequency is adjusted according to the magnitude of the changes in the first temperature change rate and the second temperature change rate.

[0362] The second defrosting frequency is adjusted according to the adjusted increase or decrease range to obtain the first defrosting frequency; wherein the magnitude of the change is positively correlated with the increase or decrease range.

[0363] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the device further includes:

[0364] The defrosting control unit 1005 is used to control the heat exchange device to exit the defrosting mode when the defrosting time for defrosting at the first defrosting frequency reaches a second preset time threshold; the second preset time threshold is a comparison threshold for determining whether the heat exchange device has exited the defrosting mode.

[0365] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the device further includes:

[0366] The threshold update unit 1008 is used to, before the defrosting time of defrosting according to the first defrosting frequency reaches the second preset time threshold, when the temperature of the second heat exchanger of the heat exchange equipment is less than the third preset temperature threshold, sum the second preset time threshold with the first preset defrosting time increment, and use the sum of the second preset time threshold and the first preset defrosting time increment as the updated second preset time threshold;

[0367] The step of defrosting at the first defrosting frequency reaching the second preset time threshold includes: the defrosting at the first defrosting frequency reaching the updated second preset time threshold.

[0368] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10As shown, the device further includes:

[0369] Temperature acquisition unit 1009 is used to acquire the second outdoor temperature of the outdoor environment where the heat exchange equipment is located and the chassis temperature of the heat exchange equipment when the temperature of the second heat exchanger is greater than or equal to the third preset temperature threshold before the defrosting time of defrosting according to the first defrosting frequency reaches the second preset time threshold.

[0370] The defrosting control unit 1005 is used to control the heat exchange device to exit the defrosting mode when the temperature difference between the second outdoor temperature and the chassis temperature is less than or equal to a third preset temperature difference threshold.

[0371] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 10 As shown, the device further includes:

[0372] The data acquisition unit 1004 is used to acquire the second preset defrosting frequency change and the second preset defrosting time increment when the temperature difference between the second outdoor temperature and the chassis temperature is greater than the third preset temperature difference threshold.

[0373] The frequency update unit 10010 is used to sum the change in the first defrosting frequency and the change in the second preset defrosting frequency, and use the sum of the change in the first defrosting frequency and the change in the second preset defrosting frequency as the updated first defrosting frequency.

[0374] The defrosting unit 1003 is used to: defrost the heat exchange equipment based on the first defrosting frequency, including: defrosting according to the updated first defrosting frequency until the defrosting duration is greater than or equal to the sum of the second preset duration threshold and the second preset defrosting duration increment.

[0375] Since the apparatus provided in this embodiment corresponds to the methods provided in the above embodiments, the implementation of the methods is also applicable to the apparatus provided in this embodiment, and will not be described in detail in this embodiment.

[0376] The methods and apparatus provided in the embodiments of this application have been described above. To implement the functions of the methods provided in the embodiments of this application, the electronic device may include a hardware structure and software modules, and may implement the above functions in the form of a hardware structure, software modules, or a hardware structure plus software modules. One of the above functions may be executed in the form of a hardware structure, software modules, or a hardware structure plus software modules.

[0377] Figure 11This is a block diagram illustrating an electronic device 1100 for implementing the above-described defrosting control method according to an exemplary embodiment. For example, the electronic device 1100 may be used in, but is not limited to, refrigeration equipment (such as refrigeration and freezing equipment, industrial cooling systems) that rely on heat exchangers for frosting prevention, such as home appliances, air conditioners, refrigerators, washing machines, and vehicles.

[0378] Reference Figure 11 The electronic device 1100 may include one or more of the following components: a processing component 1102, a memory 1104, a power supply component 1106, a multimedia component 1108, an audio component 1110, an input / output (I / O) interface 1112, a sensor component 1114, and a communication component 1116.

[0379] Processing component 1102 typically controls the overall operation of electronic device 1100, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 1102 may include one or more processors 1120 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 1102 may include one or more modules to facilitate interaction between processing component 1102 and other components. For example, processing component 1102 may include a multimedia module to facilitate interaction between multimedia component 1108 and processing component 1102.

[0380] Memory 1104 is configured to store various types of data to support the operation of electronic device 1100. Examples of such data include instructions for any application or method operating on electronic device 1100, contact data, phonebook data, messages, pictures, videos, etc. Memory 1104 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0381] Power supply component 1106 provides power to various components of electronic device 1100. Power supply component 1106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 1100.

[0382] Multimedia component 1108 includes a screen that provides an output interface between electronic device 1100 and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 1108 includes a front-facing camera and / or a rear-facing camera. When electronic device 1100 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0383] Audio component 1110 is configured to output and / or input audio signals. For example, audio component 1110 includes a microphone (MIC) configured to receive external audio signals when electronic device 1100 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 1104 or transmitted via communication component 1116. In some embodiments, audio component 1110 also includes a speaker for outputting audio signals.

[0384] I / O interface 1112 provides an interface between processing component 1102 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0385] Sensor assembly 1114 includes one or more sensors for providing state assessments of various aspects of electronic device 1100. For example, sensor assembly 1114 may detect the on / off state of electronic device 1100, the relative positioning of components such as the display and keypad of electronic device 1100, changes in position of electronic device 1100 or a component of electronic device 1100, the presence or absence of user contact with electronic device 1100, the orientation or acceleration / deceleration of electronic device 1100, and temperature changes of electronic device 1100. Sensor assembly 1114 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1114 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 1114 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0386] Communication component 1116 is configured to facilitate wired or wireless communication between electronic device 1100 and other devices. Electronic device 1100 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, 4G LTE, 5G NR (NewRadio), or combinations thereof. In one exemplary embodiment, communication component 1116 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 1116 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0387] In an exemplary embodiment, the electronic device 1100 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0388] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1104 including instructions, which can be executed by a processor 1120 of an electronic device 1100 to perform the above-described method for defrosting control. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0389] Embodiments of this disclosure also provide a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to cause a computer to perform the methods described in the above embodiments of this disclosure.

[0390] To implement the above embodiments, this disclosure also proposes a chip, including: the chip includes processing circuitry configured to perform the methods provided in the foregoing embodiments.

[0391] Figure 12 This is a schematic diagram of the structure of a chip according to an embodiment of this disclosure. See also... Figure 12 The diagram shown is a schematic representation of the structure of chip 1200, but it is not limited to this.

[0392] Chip 1200 includes processing circuit 1201 and interface circuit 1202. Interface circuit 1202 is used to read instructions and send instructions to processing circuit 1201 so that processing circuit 1201 executes the above-described method.

[0393] Optionally, such as Figure 13 As shown, Figure 13 This is a schematic diagram of another chip structure proposed in an embodiment of this disclosure. Chip 1200 may further include: a memory 1203 for storing instructions, and an interface circuit 1202 for reading instructions stored in the memory 1203.

[0394] Optionally, the interface circuit 1202 is connected to the memory 1203. The interface circuit 1202 can be used to receive signals from the memory 1203 or other devices, and can also be used to send signals to the memory 1203 or other devices. For example, the interface circuit 1202 can read instructions stored in the memory 1203 and send the instructions to the processing circuit 1201.

[0395] Optionally, the number of memories 1203 can be one or more. The number of interface circuits 1202 can also be one or more.

[0396] In some embodiments, the interface circuit 1202 performs at least one of the communication steps such as sending and / or receiving in the above method, while the processing circuit 1201 performs other steps.

[0397] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0398] Alternatively, all or part of the memory 1203 may be located outside the chip 1200.

[0399] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented through hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this application.

[0400] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0401] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0402] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0403] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processing module, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (control method), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic device, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0404] It should be understood that various parts of the embodiments of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0405] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0406] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc.

[0407] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A defrosting control method, characterized in that, The method includes: In response to the heat exchange equipment entering defrost mode, the first temperature change rate of the indoor environment where the heat exchange equipment is located in the current cycle is obtained, and the second temperature change rate of the previous cycle in the current cycle is obtained. Based on the first temperature change rate and the second temperature change rate, the first defrosting frequency of the heat exchange device in the current cycle is determined; Based on the first defrosting frequency, the heat exchange equipment is defrosted.

2. The method according to claim 1, characterized in that, Controlling the heat exchange device to enter defrost mode includes: The system obtains the first indoor temperature of the indoor environment in the current cycle, the first heat exchanger temperature of the heat exchange device, the set temperature of the heat exchange device, and the start-up operating time of the heat exchange device. Based on the first indoor temperature, the first heat exchanger temperature, the set temperature, and the start-up operating time, the heat exchange equipment is controlled to enter defrost mode.

3. The method according to claim 2, characterized in that, The step of controlling the heat exchange equipment to enter defrost mode based on the first indoor temperature, the first heat exchanger temperature, the set temperature, and the start-up operating time includes: Based on the startup duration and the temperature of the first heat exchanger, determine whether the heat exchanger of the heat exchange equipment is in the first frost state; the first frost state is the state in which there is a frost layer on the heat exchanger that is less than a preset thickness; If the heat exchanger is in the first frost state, then based on the first indoor temperature and the set temperature, it is determined whether the indoor environment is in a preset thermal comfort state; the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to a first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than a first preset temperature difference threshold. If the indoor environment is in the preset thermal comfort state, then the heat exchange equipment is controlled to enter the defrosting mode.

4. The method according to claim 3, characterized in that, The step of determining whether the heat exchanger of the heat exchange equipment is in the first frost state based on the start-up operating time and the temperature of the first heat exchanger includes: Obtain the first outdoor temperature of the outdoor environment where the heat exchange equipment is located; If the start-up running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is within the first preset temperature range, then the heat exchanger is determined to be in the first frost state. If the startup duration is less than the first preset duration threshold, then it is determined that the heat exchanger is not in the first frost state.

5. The method according to claim 4, characterized in that, The step of determining whether the heat exchanger of the heat exchange equipment is in the first frost state based on the start-up operating time and the temperature of the first heat exchanger includes: If the startup running time is greater than or equal to the first preset time threshold, and the temperature of the first heat exchanger is within the second preset temperature range, then the heat exchanger is determined to be in the first frost state. If the startup running time is greater than or equal to the first preset time threshold, and the temperature difference between the first outdoor temperature and the first heat exchanger temperature is not within the first preset temperature range, then it is determined that the heat exchanger is not in the first frost state. If the startup runtime is greater than or equal to the first preset duration threshold, and the temperature of the first heat exchanger is not within the second preset temperature range, then it is determined that the heat exchanger is not in the first frost state.

6. The method according to claim 3, characterized in that, The step of determining whether the indoor environment is in a preset thermal comfort state based on the first indoor temperature and the set temperature includes: If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, then the indoor environment is determined to be in the preset thermal comfort state. If the first indoor temperature is less than the first preset temperature threshold, then it is determined that the indoor environment is not in the preset thermal comfort state. If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is greater than or equal to the first preset temperature difference threshold, then it is determined that the indoor environment is not in the preset thermal comfort state.

7. The method according to claim 3, characterized in that, Determining whether the indoor environment is in a preset thermal comfort state includes: Based on the first indoor temperature and the first temperature change rate, determine whether the indoor environment is in the preset thermal comfort state; the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold, and the absolute value of the temperature difference between the set temperature and the first indoor temperature is less than the first preset temperature difference threshold, or the preset thermal comfort state is the state in which the indoor environment is when the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is greater than or equal to a preset rate threshold.

8. The method according to claim 7, characterized in that, The step of determining whether the indoor environment is in the preset thermal comfort state based on the first indoor temperature and the first temperature change rate includes: If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is greater than or equal to the preset rate threshold, then the indoor environment is determined to be in the preset thermal comfort state. If the first indoor temperature is greater than or equal to the first preset temperature threshold, and the first temperature change rate is less than the preset rate threshold, then it is determined that the indoor environment is not in the preset thermal comfort state.

9. The method according to claim 4, characterized in that, The method further includes: If the indoor environment is not in the preset thermal comfort state, then based on the temperature of the first heat exchanger, it is determined whether the heat exchanger is in the second frost state; the second frost state is a state in which there is a frost layer on the heat exchanger that is greater than or equal to the preset thickness. If the heat exchanger is in the second frost state, then control the heat exchange equipment to enter the defrosting mode.

10. The method according to claim 9, characterized in that, The step of determining whether the heat exchanger is in a second frost state based on the temperature of the first heat exchanger includes: If the temperature difference between the first outdoor temperature and the first heat exchanger temperature is less than the second preset temperature difference threshold, then the heat exchanger is determined to be in the second frost state; the second preset temperature difference threshold is less than any temperature within the first preset temperature range. If the temperature difference between the first outdoor temperature and the first heat exchanger temperature is greater than or equal to the second preset temperature difference threshold, then it is determined that the heat exchanger is not in the second frost state.

11. The method according to claim 10, characterized in that, The step of determining whether the heat exchanger is in a second frost state based on the temperature of the first heat exchanger includes: If the temperature of the first heat exchanger is less than the second preset temperature threshold, then the heat exchanger is determined to be in the second frost state; the second preset temperature threshold is less than any temperature within the second preset temperature range. If the temperature of the first heat exchanger is greater than or equal to the second preset temperature threshold, then it is determined that the heat exchanger is not in the second frost state.

12. The method according to claim 1, characterized in that, Methods for calculating the rate of temperature change in any given period include: The second indoor temperature of the indoor environment when the heat exchange equipment is turned on, and the third indoor temperature of the indoor environment in any cycle, and the operating time of the heat exchange equipment are obtained. The temperature change rate for any given period is calculated based on the second indoor temperature, the third indoor temperature, and the operating time.

13. The method according to claim 12, characterized in that, The step of calculating the temperature change rate for any given period based on the second indoor temperature, the third indoor temperature, and the operating time includes: The difference between the third indoor temperature and the second indoor temperature is calculated to obtain the first difference result; The temperature change rate for any given cycle is obtained by quotienting the difference result with the startup duration.

14. The method according to claim 1, characterized in that, Determining the first defrosting frequency of the heat exchange device in the current cycle based on the first temperature change rate and the second temperature change rate includes: Obtain the second defrosting frequency of the previous cycle; Based on the changes in the first and second temperature change rates, the second defrosting frequency is adjusted by increasing or decreasing the magnitude of the adjustment to obtain the first defrosting frequency.

15. The method according to claim 14, characterized in that, The step of adjusting the second defrosting frequency based on the changes in the first and second temperature change rates to obtain the first defrosting frequency includes: If the first temperature change rate is less than the second temperature change rate, then the second defrosting frequency is adjusted by increasing the frequency to obtain the first defrosting frequency.

16. The method according to claim 14, characterized in that, The step of adjusting the second defrosting frequency based on the changes in the first and second temperature change rates to obtain the first defrosting frequency includes: If the first temperature change rate is greater than the second temperature change rate, then the second defrosting frequency is adjusted by reducing the amplitude to obtain the first defrosting frequency.

17. The method according to claim 14, characterized in that, The step of adjusting the second defrosting frequency based on the changes in the first and second temperature change rates to obtain the first defrosting frequency includes: If the first temperature change rate is equal to the second temperature change rate, then the second defrosting frequency is determined as the first defrosting frequency.

18. The method according to claim 14, characterized in that, The step of adjusting the second defrosting frequency based on the changes in the first and second temperature change rates to obtain the first defrosting frequency includes: The increase or decrease of the second defrosting frequency is adjusted according to the magnitude of the changes in the first temperature change rate and the second temperature change rate. The second defrosting frequency is adjusted according to the adjusted increase or decrease range to obtain the first defrosting frequency; wherein the magnitude of the change is positively correlated with the increase or decrease range.

19. The method according to claim 1, characterized in that, The method further includes: If the defrosting time at the first defrosting frequency reaches a second preset time threshold, the heat exchange device is controlled to exit the defrosting mode; the second preset time threshold is a comparison threshold for determining whether the heat exchange device should exit the defrosting mode.

20. The method according to claim 19, characterized in that, The method further includes: Before the defrosting time according to the first defrosting frequency reaches the second preset time threshold, if the temperature of the second heat exchanger of the heat exchange equipment is less than the third preset temperature threshold, the second preset time threshold and the first preset defrosting time increment are summed, and the sum of the second preset time threshold and the first preset defrosting time increment is used as the updated second preset time threshold. The step of defrosting at the first defrosting frequency reaching the second preset time threshold includes: the defrosting at the first defrosting frequency reaching the updated second preset time threshold.

21. The method according to claim 20, characterized in that, The method further includes: Before the defrosting time according to the first defrosting frequency reaches the second preset time threshold, if the temperature of the second heat exchanger is greater than or equal to the third preset temperature threshold, then the second outdoor temperature of the outdoor environment where the heat exchange equipment is located and the chassis temperature of the heat exchanger of the heat exchange equipment are obtained. If the temperature difference between the second outdoor temperature and the chassis temperature is less than or equal to the third preset temperature difference threshold, then the heat exchange device is controlled to exit the defrosting mode.

22. The method according to claim 21, characterized in that, The method further includes: If the temperature difference between the second outdoor temperature and the chassis temperature is greater than the third preset temperature difference threshold, then obtain the second preset defrosting frequency change and the second preset defrosting time increment. The first defrosting frequency and the change in the second preset defrosting frequency are summed, and the sum of the first defrosting frequency and the change in the second preset defrosting frequency is used as the updated first defrosting frequency. The defrosting process of the heat exchange equipment based on the first defrosting frequency includes: defrosting according to the updated first defrosting frequency until the defrosting duration is greater than or equal to the sum of the second preset duration threshold and the second preset defrosting duration increment.

23. A defrosting control device, characterized in that, The device includes: The rate acquisition unit is used to acquire the first temperature change rate of the indoor environment where the heat exchange equipment is located in the current cycle in response to the heat exchange equipment entering the defrosting mode, and to acquire the second temperature change rate of the previous cycle of the current cycle. A frequency determination unit is used to determine a first defrosting frequency of the heat exchange device in the current cycle based on the first temperature change rate and the second temperature change rate. A defrosting unit is used to perform defrosting on the heat exchange equipment based on the first defrosting frequency.

24. The apparatus according to claim 23, characterized in that, The frequency determination unit includes: The frequency acquisition module is used to acquire the second defrosting frequency of the previous cycle; The frequency adjustment module is used to adjust the second defrosting frequency by increasing or decreasing the magnitude of the increase or decrease based on the changes in the first temperature change rate and the second temperature change rate, so as to obtain the first defrosting frequency.

25. The apparatus according to claim 24, characterized in that, The frequency adjustment module is used for: When the first temperature change rate is less than the second temperature change rate, the second defrosting frequency is adjusted by increasing the frequency to obtain the first defrosting frequency.

26. The apparatus according to claim 24, characterized in that, The frequency adjustment module is used for: When the first temperature change rate is greater than the second temperature change rate, the second defrosting frequency is adjusted by reducing the amplitude to obtain the first defrosting frequency.

27. The apparatus according to claim 24, characterized in that, The frequency adjustment module is used for: When the first temperature change rate is equal to the second temperature change rate, the second defrosting frequency is determined as the first defrosting frequency.

28. The apparatus according to claim 24, characterized in that, The frequency adjustment module is used for: The increase or decrease of the second defrosting frequency is adjusted according to the magnitude of the changes in the first temperature change rate and the second temperature change rate. The second defrosting frequency is adjusted according to the adjusted increase or decrease range to obtain the first defrosting frequency; wherein the magnitude of the change is positively correlated with the increase or decrease range.

29. 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 to enable the at least one processor to perform the method of any one of claims 1-22.

30. A computer-readable storage medium storing computer instructions, characterized in that, The computer instructions are used to cause the computer to perform the method according to any one of claims 1-22.

31. A chip, characterized in that, The chip includes a processing circuit and an interface circuit; wherein the interface circuit is used to read instructions and send the instructions to the processing circuit so that the processing circuit executes the method as described in any one of claims 1-22.

Images