Defrosting method and device of heating equipment, heating equipment and storage medium

Abstract

The invention relates to a defrosting method and device of heating equipment, the heating equipment and a storage medium, the method is applied to the heating equipment, and the method comprises the steps that under the condition that it is determined that a condensation module in the heating equipment meets a preset defrosting condition, the current initial operation frequency of a compression module is determined; in the process that the heating equipment operates in the defrosting mode, the defrosting operation frequency of the compression module is determined, and the compression module is controlled to operate at the defrosting operation frequency; under the condition that it is determined that the condensation module meets the preset defrosting stopping condition, the current final operation frequency of the compression module is determined; and according to the initial operation frequency, the defrosting operation frequency and the final operation frequency, the operation quit frequency when the compression module quits the defrosting mode is determined, and the compression module is controlled to quit the defrosting mode at the operation quit frequency. Therefore, the operation frequency of the compression module of the heating equipment in the defrosting process can be intelligently adjusted, the risk in the defrosting process is reduced, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of heating equipment, and in particular to a defrosting method and device for heating equipment, heating equipment and a storage medium. Background Art

[0002] With the development of air source heat pumps, air source heat pumps have gradually developed from fixed frequency to variable frequency, their functions have been continuously improved, and user experience has been continuously improved.

[0003] In actual applications, when the air source heat pump unit is in heating operation, the condenser in the unit heats the refrigerant in the system by absorbing heat from the air. Therefore, the surface temperature of the condenser is mostly lower than the air temperature. This can easily cause moisture to condense on the condenser and form frost, thereby reducing the thermal conductivity between the condenser and the air and reducing the condensation efficiency.

[0004] At present, the defrosting of the condenser is generally carried out by timing the compressor to transfer the compressed high-temperature and high-pressure refrigerant to the condenser at a preset frequency for defrosting. However, during the defrosting process of this method, the water supply temperature in the air source heat pump unit is generally seriously affected, which can easily lead to accidents such as freezing and leakage in the water supply system, seriously affecting the user experience. Summary of the invention

[0005] The present application provides a defrosting method for heating equipment to solve the technical problem that the defrosting method for heating equipment in the prior art easily causes accidents such as freezing and cracking and water leakage in the water supply system, seriously affecting the user experience.

[0006] In a first aspect, the present application provides a defrosting method for a heating device, which is applied to the heating device, and the method comprises:

[0007] When it is determined that the condensing module in the heating device meets the preset defrosting condition, determining the current initial operating frequency of the compression module, and controlling the heating device to operate in a defrosting mode;

[0008] During the operation of the heating device in the defrost mode, determining the defrost operation frequency of the compression module, and controlling the compression module to operate at the defrost operation frequency;

[0009] When it is determined that the condensing module meets the preset defrosting stop condition, determining the current final operating frequency of the compression module;

[0010] An exit operation frequency of the compression module when exiting the defrost mode is determined according to the initial operation frequency, the defrost operation frequency, and the final operation frequency, and the compression module is controlled to exit the defrost mode at the exit operation frequency.

[0011] As an optional implementation, determining the current initial operating frequency of the compression module includes:

[0012] Determining a first compression correction coefficient of the compression module, and obtaining a plurality of preset system correction coefficients;

[0013] Obtaining a current first high pressure value and a first low pressure value of the compression module;

[0014] An initial operating frequency of the compression module is determined according to the first compression correction coefficient, the plurality of system correction coefficients, the first high-pressure value, and the first low-pressure value.

[0015] As an optional implementation, determining the initial operating frequency of the compression module according to the first compression correction coefficient, the plurality of system correction coefficients, the first high pressure value, and the first low pressure value includes:

[0016] The first compression correction coefficient, the plurality of system correction coefficients, the first high pressure value, and the first low pressure value are calculated by a first preset formula to obtain an initial operating frequency of the compression module; wherein the first preset formula is as follows:

[0017]

[0018] Wherein, F1 is the initial operating frequency, A is the first compression correction coefficient, X, Y, and Z are all system correction coefficients, and P h is the first high pressure value, the P l is the first low pressure value.

[0019] As an optional implementation manner, determining the defrosting operation frequency of the compression module includes:

[0020] Get the preset time interval;

[0021] According to the time interval, the defrosting operation frequency of the compression module is regularly determined.

[0022] As an optional implementation manner, determining the defrosting operation frequency of the compression module includes:

[0023] Obtaining the ambient temperature of the condensing module before the heating device operates in the defrosting mode, and a preset second compression correction coefficient of the compression module;

[0024] Collecting the inlet temperature of the heat exchange module in the heating equipment;

[0025] The defrosting operation frequency of the compression module is determined according to the second compression correction coefficient, the ambient temperature, and the inlet temperature.

[0026] As an optional implementation, determining the defrosting operation frequency of the compression module according to the second compression correction coefficient, the ambient temperature, and the inlet temperature includes:

[0027] The second compression correction coefficient, the ambient temperature, and the inlet temperature are calculated by a second preset formula to obtain the defrosting operation frequency of the compression module. The second preset formula is as follows:

[0028]

[0029] F0 is the defrosting operation frequency, B is the second compression correction coefficient, T i is the inlet temperature, the T e is the ambient temperature.

[0030] As an optional implementation manner, determining the current final operating frequency of the compression module includes:

[0031] Obtaining a current second high pressure value and a second low pressure value of the compression module;

[0032] The current final operating frequency of the compression module is determined according to the first compression correction coefficient, the multiple system correction coefficients, the second high-pressure value, and the second low-pressure value.

[0033] As an optional implementation, when it is determined that the condensing module in the heating equipment meets the preset defrosting condition, it also includes:

[0034] Determine a first temperature difference between a current outlet temperature and a current inlet temperature of a heat exchange medium in a heat exchange module of the heating device;

[0035] The step of determining the exit operation frequency of the compression module when exiting the defrost mode according to the initial operation frequency, the defrost operation frequency, and the final operation frequency includes:

[0036] Comparing the final operating frequency with the initial operating frequency and the defrost operating frequency respectively to obtain a comparison result; wherein the defrost operating frequency is less than the initial operating frequency;

[0037] An exit operation frequency of the compression module when exiting the defrost mode is determined according to the comparison result and the first temperature difference.

[0038] As an optional implementation, determining the exit operation frequency of the compression module when exiting the defrost mode according to the comparison result and the first temperature difference includes:

[0039] When the comparison result indicates that the final operating frequency is greater than the defrosting operating frequency, obtaining a second temperature difference between an outlet temperature and an inlet temperature of the heat exchange medium in the heat exchange module when the condensing module currently meets a preset defrosting stop condition;

[0040] When it is determined that the heat exchange module currently meets the preset operating conditions according to the second temperature difference and the first temperature difference, and the comparison result indicates that the final operating frequency is less than or equal to the initial operating frequency, the initial operating frequency is determined as the exit operating frequency;

[0041] When it is determined that the heat exchange module currently meets the preset operating conditions according to the second temperature difference and the first temperature difference, and the comparison result indicates that the final operating frequency is greater than the initial operating frequency, the final operating frequency is determined as the exit operating frequency.

[0042] As an optional implementation, determining, based on the second temperature difference and the first temperature difference, whether the heat exchange module currently meets a preset operating condition includes:

[0043] Determining an equivalent temperature difference corresponding to the second temperature difference according to the initial operating frequency, the defrosting operating frequency, the final operating frequency, and the second temperature difference;

[0044] When it is determined that the equivalent temperature difference is less than or equal to the first temperature difference, it is determined that the heat exchange module currently meets the preset operating conditions.

[0045] As an optional implementation, determining the equivalent temperature difference corresponding to the second temperature difference according to the initial operating frequency, the defrosting operating frequency, the final operating frequency, and the second temperature difference includes:

[0046] Get the preset temperature difference coefficient;

[0047] Determining a maximum operating frequency from the final operating frequency and the initial operating frequency;

[0048] Determining a ratio of the maximum operating frequency to the defrosting operating frequency;

[0049] The temperature difference coefficient, the ratio, and the first temperature difference are multiplied to obtain an equivalent temperature difference corresponding to the second temperature difference.

[0050] As an optional implementation, the method further includes:

[0051] When it is determined that the equivalent temperature difference is greater than the first temperature difference, the compression module is controlled to stop running, and a preset auxiliary heat source module is controlled to heat the heat exchange medium entering the heat exchange module;

[0052] Re-determining a third temperature difference between the outlet temperature and the inlet temperature of the heat exchange medium in the heat exchange module;

[0053] Determining a new equivalent temperature difference corresponding to the third temperature difference;

[0054] When the new equivalent temperature difference is less than or equal to the first temperature difference, the compression module is controlled to restart according to the final operating frequency or the initial operating frequency.

[0055] As an optional implementation, the method further includes:

[0056] When the comparison result indicates that the final operation frequency is less than or equal to the defrost operation frequency, the defrost operation frequency is determined as the exit operation frequency.

[0057] In a second aspect, the present application provides a defrosting device for a heating device, which is applied to the heating device, and the device comprises:

[0058] A first determination module is used to determine the current initial operating frequency of the compression module and control the heating device to operate in a defrosting mode when it is determined that the condensing module in the heating device meets the preset defrosting condition;

[0059] A second determining module is used to determine the defrost operation frequency of the compression module when the heating device is operating in the defrost mode, and control the compression module to operate at the defrost operation frequency;

[0060] A third determination module is used to determine the current final operating frequency of the compression module when it is determined that the condensing module meets the preset defrosting stop condition;

[0061] The fourth determination module is used to determine the exit operation frequency of the compression module when exiting the defrost mode according to the initial operation frequency, the defrost operation frequency, and the final operation frequency, and control the compression module to exit the defrost mode at the exit operation frequency.

[0062] In a third aspect, the present application provides a heating device, comprising: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; the memory is used to store a computer program; the processor is used to implement the defrosting method of the heating device described in any one of the first aspects when executing the computer program.

[0063] In a fourth aspect, the present application provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the defrosting method for the heating equipment described in any one of the first aspects.

[0064] The technical solution provided by the embodiment of the present application is to determine the current initial operating frequency of the compression module and control the above-mentioned heating device to operate in the defrost mode when it is determined that the condensing module in the heating device meets the preset defrost conditions, determine the defrost operating frequency of the compression module during the operation of the heating device in the defrost mode, and control the compression module to operate at the above-mentioned defrost operating frequency, determine the current final operating frequency of the compression module when it is determined that the above-mentioned condensing module meets the preset stop defrost conditions, determine the exit operating frequency of the compression module when exiting the defrost mode according to the above-mentioned initial operating frequency, the above-mentioned defrost operating frequency, and the above-mentioned final operating frequency, and control the compression module to exit the above-mentioned defrost mode at the above-mentioned exit operating frequency. This technical solution controls the operating frequency of the compression module when it enters defrosting, and during the defrosting process, dynamically determines the defrosting operating frequency of the compression module according to the defrosting load index, and after completing the defrosting, can determine the defrosting exit frequency of the compression module when exiting the defrosting according to multiple operating frequencies involved in the defrosting process of the compression module. This method can intelligently adjust the initial operating frequency, defrosting operating frequency, and exit operating frequency of the compression module during the entire defrosting process, and can intelligently adjust the operating frequency of the compression module during the entire defrosting process, thereby preventing the sudden change in frequency caused by defrosting from causing a sudden drop in water temperature, resulting in accidents such as freezing and leakage of the water supply system, and realizing intelligent adjustment of the operating frequency of the compression module of the heating equipment during the defrosting process, reducing the risks of failures during the defrosting process and freezing when exiting the defrosting, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0066] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0067] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0068] Figure 1 A schematic diagram of the structure of a heating device provided in an embodiment of the present application;

[0069] Figure 2 A flow chart of an embodiment of a defrosting method for a heating device provided in an embodiment of the present application;

[0070] Figure 3 A flowchart of another embodiment of a defrosting method for a heating device provided in an embodiment of the present application;

[0071] Figure 4 A flow chart of another embodiment of a defrosting method for a heating device provided in an embodiment of the present application;

[0072] Figure 5 A flow chart of another embodiment of a defrosting method for a heating device provided in an embodiment of the present application;

[0073] Figure 6 A flowchart of another embodiment of a defrosting method for a heating device provided in an embodiment of the present application;

[0074] Figure 7 A block diagram of an embodiment of a defrosting device for a heating device provided in an embodiment of the present application;

[0075] Figure 8 A schematic structural diagram of another heating device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0077] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0078] In order to solve the technical problem that the defrosting method for heating equipment in the prior art is prone to cause accidents such as freezing and cracking, water leakage, etc. in the water supply system, which seriously affects the user experience, the present application provides a defrosting method for heating equipment, which can control the operating frequency of the compression module when entering the defrosting process, and dynamically determine the defrosting operating frequency of the compression module according to the defrosting load index during the defrosting process, and after the defrosting is completed, determine the exit defrosting frequency of the compression module when exiting the defrosting according to the multiple operating frequencies involved in the defrosting process of the compression module. The method can intelligently adjust the operating frequency of the compression module during the entire defrosting process by intelligently adjusting the initial operating frequency, defrosting operating frequency, and exit operating frequency of the compression module during the entire defrosting process, thereby preventing the frequency mutation caused by defrosting from causing a sudden drop in water temperature, resulting in accidents such as freezing and cracking, water leakage, etc. in the water supply system, and realizing intelligent adjustment of the operating frequency of the compression module of the heating equipment during the defrosting process, reducing the risks of failures during the defrosting process and freezing when exiting the defrosting, and improving the user experience.

[0079] To facilitate understanding of the defrosting method for a heating device provided in the present application, the structure of the heating device involved in the present application is first exemplarily described below.

[0080] See also Figure 1 , is a schematic diagram of the structure of a heating device provided in an embodiment of the present application. Figure 1 As shown, the heating equipment 100 may include: a compressor 1, an exhaust temperature sensor 2, a high-pressure sensor 3, a four-way valve 4, an environmental temperature sensor 5, a fin condenser 6, a main electronic expansion valve 7, an auxiliary electronic expansion valve 8, an economizer 9, a shell and tube heat exchanger 10, a water flow switch 11, an inlet temperature sensor 12, an outlet temperature sensor 13, a gas-liquid separator 14, and a low-pressure sensor 15.

[0081] The heating device 100 may be an air source heat pump unit or other types of heating equipment, which is not limited in the embodiment of the present application.

[0082] The compressor 1 can be used as a compression module in a heating device, which can be used to compress the refrigerant in the entire system to compress the low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant. The compressor 1 can be a low-pressure compressor or a high-pressure compressor, which is not limited in the embodiment of the present application. The refrigerant can be fluorine or other media, such as carbon dioxide, which is not limited in the embodiment of the present application.

[0083] The exhaust temperature sensing package 2 may be a temperature sensor in a heating device, and is used to measure the temperature of the high-temperature and high-pressure refrigerant discharged from the compressor 1 . The embodiment of the present application does not limit the type of the exhaust temperature sensing package 2 .

[0084] The high-pressure sensor 3 and the low-pressure sensor 15 are respectively used to measure the high-pressure pressure value of the refrigerant discharged from the compressor 1 and the low-pressure pressure value of the refrigerant entering. The embodiment of the present application does not limit the types of the high-pressure sensor 3 and the low-pressure sensor 15.

[0085] The four-way valve 4 is used to control the flow direction of the refrigerant in the system.

[0086] The above-mentioned environmental temperature sensing package 5 is used to measure the ambient temperature value of the fin condenser 6. The embodiment of the present application does not limit the type and installation method of the above-mentioned environmental temperature sensing package 5.

[0087] The fin condenser 6, as a condensing module in the heating equipment, can be used to heat the refrigerant by absorbing heat from the air to obtain a low-temperature and low-pressure refrigerant.

[0088] The main electronic expansion valve 7 and the auxiliary electronic expansion valve 8 are used to adjust the refrigerant flow in the system. The embodiment of the present application does not limit the types of the electronic expansion valve 7 and the electronic expansion valve 8.

[0089] The economizer 9 is used to cool the refrigerant in the system. The embodiment of the present application does not limit the type of the economizer 9.

[0090] The above-mentioned shell and tube heat exchanger 10 can be used as a heat exchange module in a heating device, which is used to absorb the heat of the high-temperature and high-pressure refrigerant output by the compressor 1 through a heat exchange medium (such as water), thereby heating the indoor environment through the heat exchange medium to achieve a heating effect.

[0091] The water flow switch 11 is used to control the flow rate of the heat exchange medium (such as water) flowing into the shell and tube heat exchanger 10 .

[0092] The water inlet temperature sensing package 12 and the water outlet temperature sensing package 13 are used to measure the inlet temperature and the outlet temperature of the shell and tube heat exchanger 10, respectively. The embodiment of the present application does not limit the types of the water inlet temperature sensing package 12 and the water outlet temperature sensing package 13.

[0093] The gas-liquid separator 14 is used to separate the liquid refrigerant and the gaseous refrigerant in the system. The embodiment of the present application does not limit the type of the gas-liquid separator 14 .

[0094] In actual application, when the above-mentioned heating equipment 100 is in heating operation, the compressor 1 compresses the low-temperature and low-pressure refrigerant to obtain a high-temperature and high-pressure refrigerant. Afterwards, the high-temperature and high-pressure refrigerant flows into the shell-and-tube heat exchanger 10 through the four-way valve 4 to heat the heat exchange medium therein, thereby obtaining a low-medium temperature refrigerant after cooling. Afterwards, the low-medium temperature refrigerant flows into the economizer 9 for further cooling to obtain a liquid refrigerant, which flows into the fin condenser 6 after passing through the electronic expansion valve 7 and / or the electronic expansion valve 8. The fin condenser 6 heats the liquid refrigerant by absorbing heat from the air to obtain a low-temperature and low-pressure gas refrigerant, and the low-temperature and low-pressure gas refrigerant enters the compressor 1 through the four-way valve 4 for recompression, thereby completing a cycle.

[0095] Among them, when the above-mentioned heating equipment is in heating operation, since the fin condenser 6 heats the refrigerant in the system by absorbing heat from the air, the surface temperature of the fin condenser 6 is mostly lower than the air temperature, which easily causes moisture to continuously condense on the fin condenser 6 and form frost, thereby reducing the thermal conductivity between the fin condenser 6 and the air and reducing the condensation efficiency.

[0096] At present, for the defrosting of the above-mentioned finned condenser 6, the compressor 1 is generally controlled to transmit the compressed high-temperature and high-pressure refrigerant to the finned condenser 6 at a preset frequency for defrosting. However, in the process of defrosting, the water supply temperature (the temperature when the heat exchange medium flows into) of the shell-and-tube heat exchanger 10 is generally seriously affected, which easily leads to accidents such as freezing and leakage in the water supply system, seriously affecting the user experience.

[0097] In this regard, the present application provides a defrosting method for a heating device, which can reduce the risks of failures during the defrosting process and freezing when exiting defrosting, thereby improving the user experience.

[0098] See also Figure 2 , which is a flow chart of an embodiment of a defrosting method for a heating equipment provided in an embodiment of the present application. Figure 2 The process shown can be applied to heating plants, e.g. Figure 1 The heating device 100 shown. Figure 2 As shown, the process may include the following steps:

[0099] Step 201: When it is determined that the condensing module in the heating equipment meets the preset defrosting conditions, the current initial operating frequency of the compression module is determined, and the heating equipment is controlled to operate in the defrosting mode.

[0100] The above-mentioned heating equipment refers to equipment used to heat the indoor environment, such as Figure 1 A heating device 10 is shown.

[0101] The above-mentioned condensing module refers to the module used to heat the refrigerant in the heating equipment, such as Figure 1 The finned condenser 6 in the shown structure can heat the inflowing refrigerant by absorbing heat from the air.

[0102] The above-mentioned defrosting conditions are used to characterize the frosting of the condensing module and the conditions under which the condensing module needs to be defrosted.

[0103] The above-mentioned initial operating frequency refers to the initial operating frequency when the compression module enters the defrost mode when the above-mentioned condensing module meets the preset defrost conditions.

[0104] The above-mentioned defrost mode refers to the operating mode of the heating device, and the heating device may include a heating mode, a defrost mode, and a cooling mode, etc., which is not limited in the present embodiment of the application. Among them, the refrigerant flow directions of the heating mode and the defrost mode of the heating device are different, for example Figure 1 In the heating device shown, when the heating device is in heating mode, the high-temperature and high-pressure refrigerant compressed by the compressor 1 flows to the shell and tube heat exchanger 10, and when the heating device is in defrosting mode or cooling mode, the high-temperature and high-pressure refrigerant compressed by the compressor 1 flows to the fin heat exchanger 6 for heating the fin heat exchanger, thereby melting the frost produced by the fin heat exchanger 6.

[0105] In an embodiment of the present application, the executor of the embodiment of the present application may be a heating device. During the operation of the heating device, in order to avoid frosting of the condensing module in the heating device and thus reduce the operating efficiency of the device, the heating device may determine in real time whether the condensing module meets the preset defrosting conditions.

[0106] As an optional implementation, the heating device may obtain the characterization value of the condensing module in real time or at a fixed time, and determine whether the condensing module meets the defrosting condition according to the characterization value. The above-mentioned characterization value may include the color of the condensing module, the thickness of frost, or the weight when frosted, etc., which is not limited in the embodiment of the present application.

[0107] As an exemplary implementation, the above-mentioned characterization value of the condensing module can be determined by resistance measurement, infrared measurement, or gravity measurement.

[0108] Optionally, when it is determined that the condensing module meets the above-mentioned defrosting conditions, the current initial operating frequency of the compression module can be determined, and the heating equipment can be controlled to operate in the defrosting mode, so as to defrost the condensing module.

[0109] As for how to determine the current initial operating frequency of the compression module, you can refer to the following Figure 3 The process shown is explained and will not be described in detail here.

[0110] Step 202: When the heating device is operating in the defrost mode, determine the defrost operation frequency of the compression module, and control the compression module to operate at the defrost operation frequency.

[0111] The defrost operation frequency refers to the operation frequency of the compression module when the condensing module is defrosted in real time or at a fixed time. The defrost operation frequency may be changed in real time or at a fixed time, rather than being fixed.

[0112] In the embodiment of the present application, when the heating equipment starts to operate in the defrost mode, since the flow direction of the refrigerant is opposite to that during the heating operation, the refrigerant changes from heating the heat exchange module to cooling it. Therefore, in order to prevent the refrigerant from cooling the heat exchange module too quickly, resulting in freezing at the heat exchange medium inlet of the heat exchange module, the compression module can be controlled to operate in the defrost mode, and its operating frequency can be gradually reduced from the above-mentioned initial operating frequency.

[0113] Based on this, the heating device can determine the defrost operation frequency of the compression module during operation in the defrost mode, and control the compression module to operate at the defrost operation frequency, wherein the defrost operation frequency is less than the initial operation frequency.

[0114] As an optional implementation method, the heating device can determine the defrost operation frequency of the compression module in real time.

[0115] As another optional implementation, the heating device can periodically determine the defrost operation frequency of the compression module.

[0116] As an exemplary implementation, a preset time interval may be obtained, and the defrosting operation frequency of the compression module may be regularly determined according to the time interval.

[0117] As for how to determine the defrost operation frequency of the compression module, please refer to the following Figure 4 The process shown is explained and will not be described in detail here.

[0118] Step 203: When it is determined that the condensing module meets the preset defrosting stop condition, determine the current final operating frequency of the compression module.

[0119] Step 204, determining the exit operation frequency of the compression module when exiting the defrost mode according to the initial operation frequency, the defrost operation frequency, and the final operation frequency, and controlling the compression module to exit the defrost mode at the exit operation frequency.

[0120] The following is a unified description of step 203 and step 204:

[0121] The above-mentioned defrost stop condition refers to the condition used to indicate that the defrosting of the condenser has been completed, or that the defrost mode can be exited at present, for example, it is determined that there is no more frost on the surface of the condenser or the frost is less, and it no longer affects the heating operation of the heating equipment.

[0122] The above-mentioned final operating frequency refers to the final operating frequency reached by the compression module under the current operating condition when the condensing module meets the defrosting stop condition, which is determined according to a preset method. The final operating frequency is determined differently from the above-mentioned defrosting operating frequency.

[0123] In the embodiment of the present application, when the heating equipment is operating in the defrost mode, it can be determined in real time whether the condensing module meets the preset defrost stopping conditions.

[0124] As an optional implementation, the heating device may obtain the characterization value of the condensing module in real time or at a fixed time, and determine whether the condenser meets the above-mentioned defrosting stop condition according to the characterization value. The above-mentioned characterization value may include the color of the condensing module, the thickness of frost, or the weight when frosted, etc., which is not limited in the embodiment of the present application.

[0125] Optionally, when it is determined that the condensing module meets the above-mentioned defrosting stop conditions, the final operating frequency that the compression module may reach under the current operating conditions may be determined.

[0126] As for how to determine the above final operating frequency, it can be found in the following Figure 3 The process shown is explained and will not be described in detail here.

[0127] In the embodiment of the present application, in order to prevent the compression module from malfunctioning or freezing when exiting the defrost mode due to a sudden change in the operating frequency when exiting the defrost mode, the heating device can determine the exit operating frequency of the compression module when exiting the defrost mode according to the operating frequency of the compression module during the entire defrost process. That is, the exit operating frequency of the compression module when exiting the defrost mode is determined according to the initial operating frequency, the defrost operating frequency, and the final operating frequency.

[0128] As for how to determine the exit operation frequency of the compression module when exiting the defrost mode according to the above initial operation frequency, the above defrost operation frequency, and the above final operation frequency, it can be described below by Figure 5 The process shown is explained and will not be described in detail here.

[0129] In addition, in order to prevent the heat exchange module from freezing during the defrosting process, the heating equipment can determine the outlet temperature of the heat exchange module in real time, and determine whether the outlet temperature is greater than or equal to a preset temperature threshold (for example, 3°C).

[0130] Optionally, if the outlet temperature is greater than or equal to the temperature threshold, the system may continue to operate in the defrost mode.

[0131] On the contrary, if the outlet temperature is lower than the temperature threshold, in order to prevent the heat exchange module from freezing, the defrosting can be stopped and the preset standby heat source module can be started to heat the heat exchange medium in the heat exchange module. When the outlet temperature is greater than or equal to the above temperature threshold, the defrosting mode will continue to operate.

[0132] The technical solution provided by the embodiment of the present application is to determine the current initial operating frequency of the compression module and control the above-mentioned heating device to operate in the defrost mode when it is determined that the condensing module in the heating device meets the preset defrost conditions, determine the defrost operating frequency of the compression module during the operation of the heating device in the defrost mode, and control the compression module to operate at the above-mentioned defrost operating frequency, determine the current final operating frequency of the compression module when it is determined that the above-mentioned condensing module meets the preset stop defrost conditions, determine the exit operating frequency of the compression module when exiting the defrost mode according to the above-mentioned initial operating frequency, the above-mentioned defrost operating frequency, and the above-mentioned final operating frequency, and control the compression module to exit the above-mentioned defrost mode at the above-mentioned exit operating frequency. This technical solution controls the operating frequency of the compression module when it enters defrosting, and during the defrosting process, dynamically determines the defrosting operating frequency of the compression module according to the defrosting load index, and after completing the defrosting, can determine the defrosting exit frequency of the compression module when exiting the defrosting according to multiple operating frequencies involved in the defrosting process of the compression module. This method can intelligently adjust the initial operating frequency, defrosting operating frequency, and exit operating frequency of the compression module during the entire defrosting process, and can intelligently adjust the operating frequency of the compression module during the entire defrosting process, thereby preventing the sudden change in frequency caused by defrosting from causing a sudden drop in water temperature, resulting in accidents such as freezing and leakage of the water supply system, and realizing intelligent adjustment of the operating frequency of the compression module of the heating equipment during the defrosting process, reducing the risks of failures during the defrosting process and freezing when exiting the defrosting, and improving the user experience.

[0133] Furthermore, when determining the operating frequency of the compression module, the pressure value of the compression module also needs to be considered. For this purpose, an embodiment of the present application provides another defrosting method for heating equipment.

[0134] See also Figure 3 , which is a flow chart of an embodiment of a defrosting method for another heating equipment provided in an embodiment of the present application. Figure 3 The process shown in Figure 2 Based on the process shown in the figure, it further describes how the initial operating frequency and the final operating frequency of the compression module are determined. Figure 3 As shown, the process may include the following steps:

[0135] Step 301: When it is determined that the condensing module in the heating equipment meets the preset defrosting conditions, a first compression correction coefficient of the compression module is determined, and a plurality of preset system correction coefficients are obtained.

[0136] Step 302: Obtain the current first high pressure value and first low pressure value of the compression module.

[0137] Step 303: Determine the initial operating frequency of the compression module according to the first compression correction coefficient, multiple system correction coefficients, the first high pressure value, and the first low pressure value.

[0138] The following is a unified description of steps 301 to 303:

[0139] The above-mentioned first compression correction coefficient refers to the coefficient used to correct the operating frequency of the compressor when determining the operating frequency of the compressor. It can be determined according to the structure and module parameters of the heating equipment. The above-mentioned module parameters may include four-way valve parameters, displacement of the compression module, etc.

[0140] The above-mentioned system correction parameters are correction parameters determined in advance according to the refrigerant.

[0141] The above-mentioned first high-pressure value refers to the pressure value of the high pressure corresponding to the compression module when the condensing module meets the defrosting conditions.

[0142] The above-mentioned first low pressure value refers to the pressure value of the compression module corresponding to the low pressure when the condensing module meets the defrosting conditions.

[0143] In an embodiment of the present application, in order to more accurately determine the initial operating frequency of the compression module, the heating equipment may first determine the first compression correction coefficient of the compression module and obtain a plurality of preset system correction coefficients.

[0144] As an optional implementation, when determining the first compression correction coefficient, the correction coefficient of the compressor (the correction coefficient is an empirical coefficient, and its value range can be 1 to 1.6), the four-way valve in the heating equipment (for example Figure 1 The leakage of the four-way valve 4) shown in the figure, and the displacement of the compressor, and the above correction coefficient, leakage, and displacement are multiplied to obtain the first compression correction coefficient.

[0145] As an optional implementation method, the above-mentioned multiple system correction coefficients can be pre-set by technical personnel and stored in a preset storage medium. Therefore, the heating equipment can directly obtain the above-mentioned multiple system correction coefficients from the above-mentioned storage medium.

[0146] Afterwards, the heating equipment can obtain the current high-pressure pressure value (for the convenience of description, referred to as the first high-pressure pressure value hereinafter) and low-pressure pressure value (for the convenience of description, referred to as the first low-pressure pressure value hereinafter) of the compression module.

[0147] As an optional implementation, the high pressure sensors (such as Figure 1 The high pressure sensor 3 shown) and the low pressure sensor (eg Figure 1 The low pressure sensor 15 shown in the figure obtains the first high pressure value and the first low pressure value of the compression module.

[0148] Based on this, the initial operating frequency of the compression module can be determined according to the above-mentioned first compression coefficient, multiple system correction coefficients, the first high-pressure value, and the first low-pressure value.

[0149] As an optional implementation, the first compression coefficient, multiple system correction coefficients, the first high pressure value, and the first low pressure value can be calculated by a first preset formula to obtain the initial operating frequency of the compression module. The first preset formula can be shown as the following formula (1):

[0150]

[0151] Wherein, the above F1 is the above initial operating frequency, the above A is the above first compression correction coefficient (its value can be 2.8), the above X (its value can be 7.87), the above Y (its value can be 9.65), and the above Z (its value can be 6.33) are all the above system correction coefficients, and the above P h is the first high pressure value, and the P l is the first low pressure value mentioned above.

[0152] Furthermore, when the determined initial operating frequency is a decimal, the initial operating frequency may be rounded to an integer, thereby controlling the compression module to operate according to the rounded initial operating frequency.

[0153] Step 304: When it is determined that the condensing module meets the preset defrosting stop condition, obtain the current second high pressure value and second low pressure value of the compression module.

[0154] Step 305: Determine the current final operating frequency of the compression module according to the first compression correction coefficient, the multiple system correction coefficients, the second high pressure value, and the second low pressure value.

[0155] The following is a unified description of step 304 and step 305:

[0156] The above-mentioned second high-pressure value refers to the pressure value of the high pressure corresponding to the compression module when the condensing module meets the preset defrosting stop conditions.

[0157] The above-mentioned first low pressure value refers to the pressure value of the compression module corresponding to the low pressure when the condensing module meets the preset defrosting stop conditions.

[0158] In an embodiment of the present application, when it is determined that the condensing module meets the preset conditions for stopping defrosting, in order to more accurately determine the final operating frequency of the compression module, the heating equipment can obtain the current high-pressure pressure value (for the convenience of description, referred to as the second high-pressure pressure value hereinafter) and low-pressure pressure value (for the convenience of description, referred to as the second low-pressure pressure value hereinafter) of the compression module.

[0159] As an optional implementation, the high pressure sensors (such as Figure 1 The high pressure sensor 3 shown) and the low pressure sensor (eg Figure 1 The low pressure sensor 15 shown in the figure obtains the second high pressure value and the second low pressure value of the compression module.

[0160] Based on this, the final operating frequency of the compression module can be determined according to the above-mentioned first compression coefficient, multiple system correction coefficients, the second high pressure value, and the second low pressure value.

[0161] As an optional implementation, the first compression coefficient, multiple system correction coefficients, the first high pressure value, and the first low pressure value can be calculated by a preset formula to obtain the initial operating frequency of the compression module. The preset formula can be shown as the following formula (II):

[0162]

[0163] Wherein, the above F1 is the above initial operating frequency, the above A is the above first compression correction coefficient, the above X, the above Y, and the above Z are all the above system correction coefficients, and the above P h2 is the second high pressure value, and the P l2 It is the second low pressure value mentioned above.

[0164] Furthermore, when the determined initial operating frequency is a decimal, the initial operating frequency may be rounded to an integer, thereby controlling the compression module to operate according to the rounded initial operating frequency.

[0165] The technical solution provided by the embodiment of the present application determines the first compression correction coefficient of the compression module and obtains a plurality of preset system correction coefficients when it is determined that the condensing module in the heating equipment meets the preset defrosting conditions, obtains the current first high-pressure value and the first low-pressure value of the compression module, and determines the initial operating frequency of the compression module according to the first compression correction coefficient, the plurality of system correction coefficients, the first high-pressure value, and the first low-pressure value. This technical solution can determine the initial operating frequency and the final operating frequency of the compressor by determining the compression correction coefficient of the compressor and the plurality of preset system correction coefficients, and according to the high-pressure value and the low-pressure value corresponding to the compressor. By correcting the compression correction coefficient and the system correction coefficient, the initial operating frequency and the final operating frequency of the compressor can be determined more accurately.

[0166] Furthermore, when the heating equipment is operating in the defrost mode, when determining the defrost operating power of the compression module, the inlet temperature of the heat exchange medium in the heat exchange module must also be considered to prevent the initial freezing of the heat exchange module. In this regard, the embodiment of the present application provides another defrost method for the heating equipment.

[0167] See also Figure 4 , which is a flow chart of an embodiment of a defrosting method for a heating device provided in an embodiment of the present application. Figure 4 The process shown in Figure 2 Based on the process shown in the figure, it further describes how to determine the defrosting operation power of the compression module. Figure 4 As shown, the process may include the following steps:

[0168] Step 401: Obtain the ambient temperature of the condensing module before the heating equipment operates in the defrost mode.

[0169] The above-mentioned ambient temperature refers to the ambient temperature value of the condensing module when the condensing module in the heating equipment meets the preset defrosting conditions.

[0170] In the embodiment of the present application, when determining the defrost operation frequency of the compression module, the heating equipment may first determine the ambient temperature of the condensing module when the defrost conditions are met.

[0171] As an optional implementation, when the heating device determines that the condensing module meets the defrosting conditions, the ambient temperature of the condensing module at this time can be obtained and stored in a preset storage medium. Based on this, when the heating device is running in the defrosting mode, the ambient temperature can be directly obtained from the storage medium.

[0172] As an exemplary embodiment, the heating device can directly detect the temperature of the condensing module through a temperature sensor (e.g. Figure 1The ambient temperature sensing package 5) shown obtains the above ambient temperature.

[0173] Step 402: Obtain a second compression correction coefficient of a preset compressor module.

[0174] Step 403: Collect the inlet temperature of the heat exchange module in the heating equipment.

[0175] Step 404: Determine the defrost operation frequency of the compression module according to the second compression correction coefficient, the ambient temperature, and the inlet temperature.

[0176] The following is a unified description of steps 402 to 404:

[0177] The above-mentioned second compression correction coefficient refers to a pre-set correction coefficient corresponding to when determining the operating frequency of the compression module according to the ambient temperature. It can be 3600000 or other values. The embodiment of the present application does not limit this.

[0178] The above-mentioned inlet temperature refers to the temperature at the inlet of the heat exchange medium flowing into the heat exchange module of the heating equipment. The above-mentioned heat exchange medium can be water or other media, and the embodiment of the present application does not impose any limitation on this.

[0179] In an embodiment of the present application, when the heating equipment determines the defrost operation frequency of the compression module, in order to prevent freezing at the inlet of the heat exchange module, the inlet temperature of the heat exchange module in the heating equipment can be collected, and the defrost operation frequency of the compression module can be determined based on the above-mentioned second compression correction coefficient, ambient temperature, and inlet temperature.

[0180] As an optional implementation, when collecting the inlet temperature of the heat exchange module in the heating equipment, a temperature sensor (e.g. Figure 1 The inlet water temperature sensing package 12) shown obtains the inlet temperature.

[0181] As an optional implementation method, when determining the defrosting operation frequency of the compression module, the second compression correction coefficient, the ambient temperature, and the inlet temperature can be calculated by a second preset formula to obtain the defrosting operation frequency of the compression module. The second preset formula can be shown as the following formula (III):

[0182]

[0183] The above F0 is the above defrosting operation frequency, the above B is the above second compression correction coefficient, and the above T i is the above inlet temperature, the above T e For the above ambient temperature.

[0184] Furthermore, when the determined defrost operation frequency is a decimal, the defrost operation frequency may be rounded to an integer, thereby controlling the compression module to operate according to the rounded defrost operation frequency.

[0185] The technical solution provided by the embodiment of the present application obtains the ambient temperature of the condensing module before the heating equipment is operated in the defrost mode, obtains the preset second compression correction coefficient of the compressor module, collects the inlet temperature of the heat exchange module in the heating equipment, and determines the defrost operation frequency of the compression module according to the second compression correction coefficient, the ambient temperature, and the inlet temperature. This technical solution determines the defrost operation frequency of the compression module in real time or at a fixed time according to the ambient temperature of the condensing module when the defrost conditions are met and the inlet temperature of the heat exchange module during the operation of the heating equipment in the defrost mode, so that the defrost operation frequency of the compression module can be dynamically adjusted according to the inlet temperature of the heat exchange module and the ambient temperature of the condensing module when the defrost conditions are met, thereby realizing dynamic adjustment of the defrost operation frequency of the compression module, thereby improving the adaptability of the compression module operation and avoiding safety issues such as excessive defrost pressure and freezing of the heat exchange module.

[0186] Furthermore, in order to prevent the compression module from suddenly changing its operating frequency when exiting the defrost mode, thereby causing the temperature of the heat exchange module to be too low and freezing, the temperature difference between the inlet temperature and the outlet temperature of the heat exchange module may be considered when determining the exit operating frequency of the compression module when exiting the defrost mode. In this regard, the embodiment of the present application provides another defrosting method for heating equipment.

[0187] See also Figure 5 , which is a flow chart of an embodiment of a defrosting method for a heating device provided in an embodiment of the present application. Figure 5 The process shown in Figure 2 Based on the process shown in the figure, it is further described how to determine the exit operation frequency of the compression module when exiting the defrost mode according to the initial operation frequency, the defrost operation frequency, and the final operation frequency. Figure 5 As shown, the process may include the following steps:

[0188] Step 501: When it is determined that the condensing module in the heating equipment meets the preset defrosting condition, determine a first temperature difference between a current outlet temperature and a current inlet temperature of a heat exchange medium in a heat exchange module of the heating equipment.

[0189] The above-mentioned first temperature difference refers to the temperature difference between the outlet temperature and the inlet temperature in the heat exchange module of the heating equipment when the condensing module in the heating equipment meets the preset defrosting conditions.

[0190] As an optional implementation, when it is determined that the condensing module in the heating device meets the preset defrosting condition, the temperature sensor (e.g. Figure 1 The outlet water temperature sensor 13 shown) and the inlet temperature sensor (eg Figure 1 The water inlet temperature sensing package 12) shown in the figure obtains the outlet temperature and inlet temperature of the heat exchange module.

[0191] As an exemplary implementation, the first temperature difference may be obtained by subtracting the inlet temperature from the outlet temperature.

[0192] As another exemplary implementation, the first temperature difference may be obtained by subtracting the outlet temperature from the inlet temperature.

[0193] Afterwards, the first temperature difference may be stored in a preset storage medium.

[0194] Step 502: When it is determined that the condensing module meets the preset defrosting stop condition, the final operating frequency is compared with the initial operating frequency and the defrosting operating frequency to obtain a comparison result, wherein the defrosting operating frequency is less than the initial operating frequency.

[0195] Step 503: Determine the exit operation frequency of the compression module when exiting the defrost mode according to the comparison result and the first temperature difference.

[0196] The following is a unified description of step 502 and step 503:

[0197] In the embodiment of the present application, when determining the defrosting stop condition of the compression module, the first temperature difference can be obtained, and the final operating frequency can be compared with the initial operating frequency and the defrosting operating frequency to obtain a comparison result. In particular, since the operating frequency of the compression module will decrease when it enters the defrosting mode, the initial operating frequency is greater than the defrosting operating frequency.

[0198] As an optional implementation, it can be seen from the description in step 501 that after determining the first temperature difference, the heating device can store the first temperature difference in a preset storage medium. Based on this, the heating device can obtain the first temperature difference from the above storage medium.

[0199] Afterwards, the exit operation frequency of the compression module when exiting the defrost mode can be determined based on the above comparison result and the first temperature difference.

[0200] As an optional implementation manner, a comparison result between the final operating frequency and the above-mentioned defrosting operating frequency may be determined first.

[0201] Optionally, when the comparison result indicates that the final operating frequency is less than or equal to the above-mentioned defrost operating frequency, the above-mentioned defrost operating frequency can be directly determined as the exit operating frequency. At this time, when the compression module exits the defrost mode at the defrost operating frequency, there will be no freezing phenomenon at the inlet of the heat exchange module.

[0202] Optionally, when the comparison result indicates that the final operating frequency is greater than the defrosting operating frequency, if the compression module exits the defrosting mode at the defrosting operating frequency, the inlet temperature of the heat exchange module may be too low, thereby causing freezing at the inlet of the heat exchange module. Therefore, the second temperature difference between the outlet temperature and the inlet temperature of the heat exchange medium in the heat exchange module can be obtained when the condensing module currently meets the preset defrosting stop condition.

[0203] As an optional implementation, when it is determined that the condensing module in the heating device meets the preset defrosting stop condition, the temperature sensor (e.g. Figure 1 The outlet water temperature sensor 13 shown) and the inlet temperature sensor (eg Figure 1 The water inlet temperature sensing package 12) shown in the figure obtains the outlet temperature and inlet temperature of the heat exchange module.

[0204] As an exemplary implementation, the second temperature difference may be obtained by subtracting the inlet temperature from the outlet temperature.

[0205] As another exemplary implementation, the second temperature difference may be obtained by subtracting the outlet temperature from the inlet temperature.

[0206] Afterwards, it can be determined whether the heat exchange module currently meets the preset operating conditions based on the first temperature difference and the second temperature difference. The above operating conditions refer to the conditions under which the heat exchange module can continue to operate, that is, when the compression module exits the defrost mode, if it continues to operate, it will not cause freezing and other phenomena in the heat exchange module.

[0207] Optionally, when it is determined that the heat exchange module currently meets the preset operating conditions, a comparison result of the final operating frequency and the initial operating frequency may be obtained. At this time, it has been compared that the final operating frequency is greater than the defrosting operating frequency.

[0208] As an implementation manner, if the comparison result indicates that the final operating frequency is less than or equal to the initial operating frequency, the initial operating frequency is determined as the above-mentioned exit operating frequency.

[0209] As an implementation manner, if the comparison result indicates that the final operating frequency is greater than the initial operating frequency, the final operating frequency may be determined as the exit operating frequency.

[0210] In one embodiment, when determining whether the heat exchange module currently meets the preset operating conditions, the equivalent temperature difference corresponding to the second temperature difference can be determined according to the initial operating frequency, the defrosting operating frequency, the final operating frequency, and the second temperature difference. The equivalent temperature difference is used to characterize the temperature difference between the outlet temperature and the inlet temperature of the heat exchange module after the entire defrosting process is completed when the condensing module meets the defrosting stop condition.

[0211] As an exemplary embodiment, when determining the equivalent temperature difference, a preset temperature difference coefficient can be obtained, and the maximum operating frequency can be determined from the final operating frequency and the initial operating frequency, and the ratio between the maximum operating frequency and the defrosting operating frequency can be determined. Afterwards, the temperature difference coefficient, the ratio, and the first temperature difference can be multiplied to obtain the equivalent temperature difference corresponding to the second temperature difference. For example, the equivalent temperature difference can be determined by the following formula (IV):

[0212]

[0213] The above-mentioned Δt′ is the above-mentioned equivalent temperature difference, the above-mentioned C is the above-mentioned temperature difference coefficient (which may be 0.8), the above-mentioned max(F1, F2) is the maximum operating frequency between the final operating frequency and the initial operating frequency, the above-mentioned F0 is the above-mentioned defrost operating frequency, and the above-mentioned Δt is the above-mentioned second temperature difference.

[0214] Afterwards, when it is determined that the equivalent temperature difference is less than or equal to the first temperature difference, it can be determined that the heat exchange module currently meets the preset operating conditions.

[0215] Optionally, when it is determined that the equivalent temperature difference is greater than the first temperature difference, it means that the temperature difference of the heat exchange module is too large. If the compression module continues to operate, freezing may easily occur at the inlet of the heat exchange module. Therefore, the compression module can be controlled to stop operating.

[0216] Afterwards, the preset auxiliary heat source module can be controlled to heat the heat exchange medium entering the heat exchange module. For example, when the heat exchange medium is water, the water flowing into the heat exchange module can be heated.

[0217] Afterwards, the third temperature difference between the outlet temperature and the inlet temperature of the heat exchange medium in the heat exchange module can be re-determined, and the new equivalent temperature difference corresponding to the third temperature difference can be re-determined according to the above formula (IV).

[0218] Optionally, when it is determined that the new equivalent temperature difference is less than or equal to the first temperature difference, the compression module may be controlled to restart at the final operating frequency or the initial operating frequency. As an exemplary embodiment, the compression module may be restarted at the maximum operating frequency of the final operating frequency and the initial operating frequency.

[0219] Further, the first temperature difference may be re-determined, for example, the first temperature difference may be increased by a preset value (for example, 2° C.) to obtain a new first temperature difference. Afterwards, when it is determined that the new equivalent temperature difference is less than or equal to the new first temperature difference, the compression module may be controlled to restart at the final operating frequency or the initial operating frequency.

[0220] On the contrary, when it is determined that the new equivalent temperature difference is greater than the first temperature difference, the auxiliary heat source module may continue to be controlled to heat the heat exchange medium entering the heat exchange module.

[0221] The technical solution provided by the embodiment of the present application is to determine the first temperature difference between the current outlet temperature and the current inlet temperature of the heat exchange medium in the heat exchange module of the heating device when it is determined that the condensing module in the heating device meets the preset defrosting condition, and to compare the final operating frequency with the initial operating frequency and the defrosting operating frequency when it is determined that the condensing module meets the preset defrosting stop condition, and obtain a comparison result, wherein the defrosting operating frequency is less than the initial operating frequency, and to determine the exit operating frequency of the compression module when it exits the defrosting mode according to the comparison result and the first temperature difference. This technical solution determines the exit operating frequency of the compression module when it exits the defrosting mode according to the first difference between the outlet temperature and the inlet temperature of the heat exchange module when the condensing module meets the preset defrosting condition, and the comparison result of the final operating frequency with the initial operating frequency and the defrosting operating frequency, and determines the exit operating frequency of the compression module from the initial operating frequency, the defrosting operating frequency, and the final operating frequency by referring to the temperature difference between the outlet temperature and the inlet temperature of the heat exchange module, so as to more accurately determine the operating frequency of the compression module when it exits the defrosting mode.

[0222] See also Figure 6 , is a flow chart of another embodiment of a defrosting method for a heating device provided in an embodiment of the present application. Figure 6 As shown, the process may include the following:

[0223] First, after receiving the heating start-up command, the heating equipment can determine whether the preset defrost conditions are currently met. When the equipment meets the preset defrost conditions, it can first calculate the entry frequency F1 (initial operating frequency) according to the method shown in the above formula (1), round the calculation result, and save the maximum temperature difference △T (first temperature difference) of the heat exchange module when entering the defrost for the first time.

[0224] After that, after entering the defrost mode, the compression module stably runs from F1 to FO (defrost operation frequency), wherein the calculation of FO can be determined by the method shown in the above formula (III), and the calculation result is rounded. During the defrost process, F0 is calculated every 30 seconds, and the time can be set.

[0225] After that, it can be determined in real time whether the preset defrosting stop condition is met. When the defrosting stop condition is met, F2 (exit operation frequency) is calculated according to the method shown in the above formula (II). When F2 is less than or equal to FO, the compression module can directly perform reversing operation according to FO and exit the defrosting mode. When F2 is greater than F0, the current temperature difference (second temperature difference) is collected, and the equivalent temperature difference △t` (equivalent temperature difference) corresponding to the second temperature difference is determined according to the method shown in the above formula (IV), and then △t` (equivalent temperature difference) is compared with △T (first temperature difference).

[0226] Optionally, if Δt` is less than or equal to ΔT, defrosting is exited according to the maximum operating frequency (the maximum value of F1 and F2).

[0227] Optionally, if △t` is greater than △T, it will standby and start the auxiliary heat source to heat the inlet water temperature in the heat exchange module, thereby reducing the temperature difference so that △t` is less than or equal to △T (or increase △T by 2°C to obtain a new first temperature difference), and then enter the heating mode according to the maximum operating frequency (the maximum value of F1 and F2).

[0228] Among them, if the water temperature in the heat exchange module is too low during the defrosting process of the heating equipment (the outlet temperature of the heat exchange module is less than or equal to the preset threshold, for example, less than or equal to 3°C), the equipment should be shut down immediately, and the backup heat source should be started and restarted after the start-up conditions are met.

[0229] The technical solution provided in the embodiment of the present application can solve the anti-freezing problem while improving the operational adaptability and reducing safety issues such as excessive defrost pressure and freezing of the water side heat exchanger by determining the defrost entry frequency F1, the defrost coupling frequency F0 and the defrost exit frequency F2 of the heating equipment.

[0230] See also Figure 7 , is a block diagram of an embodiment of a defrosting device for a heating device provided in an embodiment of the present application. As an embodiment, the device can be applied to a heating device, such as Figure 1 The heating device 100 shown. Figure 7 As shown, the device may include:

[0231] The first determination module 71 is used to determine the current initial operating frequency of the compression module and control the heating device to operate in a defrosting mode when it is determined that the condensing module in the heating device meets the preset defrosting condition;

[0232] A second determining module 72 is used to determine the defrost operation frequency of the compression module when the heating device is operating in the defrost mode, and control the compression module to operate at the defrost operation frequency;

[0233] A third determination module 73 is used to determine the current final operating frequency of the compression module when it is determined that the condensing module meets the preset defrosting stop condition;

[0234] The fourth determination module 74 is used to determine the exit operation frequency of the compression module when exiting the defrost mode according to the initial operation frequency, the defrost operation frequency, and the final operation frequency, and control the compression module to exit the defrost mode at the exit operation frequency.

[0235] like Figure 8 As shown, the embodiment of the present application provides a structural schematic diagram of another heating device, including a processor 81, a communication interface 82, a memory 83 and a communication bus 84, wherein the processor 81, the communication interface 82, and the memory 83 communicate with each other through the communication bus 84.

[0236] A memory 83, for storing computer programs;

[0237] In one embodiment of the present application, the processor 81 is used to execute the program stored in the memory 83 to implement the defrosting method of the heating device provided by any one of the above method embodiments, including:

[0238] When it is determined that the condensing module in the heating device meets the preset defrosting condition, determining the current initial operating frequency of the compression module, and controlling the heating device to operate in a defrosting mode;

[0239] During the operation of the heating device in the defrost mode, determining the defrost operation frequency of the compression module, and controlling the compression module to operate at the defrost operation frequency;

[0240] When it is determined that the condensing module meets the preset defrosting stop condition, determining the current final operating frequency of the compression module;

[0241] An exit operation frequency of the compression module when exiting the defrost mode is determined according to the initial operation frequency, the defrost operation frequency, and the final operation frequency, and the compression module is controlled to exit the defrost mode at the exit operation frequency.

[0242] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the defrosting method for a heating device provided in any one of the aforementioned method embodiments are implemented.

[0243] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0244] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0245] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0246] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A defrosting method for heating equipment, characterized in that: Applied to heating equipment, the method comprises: When it is determined that the condensing module in the heating device meets the preset defrosting condition, determining the current initial operating frequency of the compression module, and controlling the heating device to operate in a defrosting mode; During the operation of the heating device in the defrost mode, determining the defrost operation frequency of the compression module, and controlling the compression module to operate at the defrost operation frequency; When it is determined that the condensing module meets the preset defrosting stop condition, determining the current final operating frequency of the compression module; An exit operation frequency of the compression module when exiting the defrost mode is determined according to the initial operation frequency, the defrost operation frequency, and the final operation frequency, and the compression module is controlled to exit the defrost mode at the exit operation frequency.

2. The method according to claim 1, characterized in that The determining the current initial operating frequency of the compression module includes: Determining a first compression correction coefficient of the compression module, and obtaining a plurality of preset system correction coefficients; Obtaining a current first high pressure value and a first low pressure value of the compression module; An initial operating frequency of the compression module is determined according to the first compression correction coefficient, the plurality of system correction coefficients, the first high-pressure value, and the first low-pressure value.

3. The method according to claim 2, characterized in that The determining the initial operating frequency of the compression module according to the first compression correction coefficient, the plurality of system correction coefficients, the first high pressure value, and the first low pressure value comprises: The first compression correction coefficient, the plurality of system correction coefficients, the first high pressure value, and the first low pressure value are calculated by a first preset formula to obtain an initial operating frequency of the compression module; wherein the first preset formula is as follows: Wherein, F1 is the initial operating frequency, A is the first compression correction coefficient, X, Y, and Z are all system correction coefficients, and P h is the first high pressure value, the P l is the first low pressure value.

4. The method according to claim 1, characterized in that The step of determining the defrosting operation frequency of the compression module comprises: Get the preset time interval; According to the time interval, the defrosting operation frequency of the compression module is regularly determined.

5. The method according to claim 1, characterized in that The step of determining the defrosting operation frequency of the compression module comprises: Obtaining the ambient temperature of the condensing module before the heating device operates in the defrosting mode, and a preset second compression correction coefficient of the compression module; Collecting the inlet temperature of the heat exchange module in the heating equipment; The defrosting operation frequency of the compression module is determined according to the second compression correction coefficient, the ambient temperature, and the inlet temperature.

6. The method according to claim 5, characterized in that The step of determining the defrosting operation frequency of the compression module according to the second compression correction coefficient, the ambient temperature, and the inlet temperature includes: The second compression correction coefficient, the ambient temperature, and the inlet temperature are calculated by a second preset formula to obtain the defrosting operation frequency of the compression module. The second preset formula is as follows: F0 is the defrosting operation frequency, B is the second compression correction coefficient, T i is the inlet temperature, the T e is the ambient temperature.

7. The method according to claim 2, characterized in that The determining the current final operating frequency of the compression module includes: Obtaining a current second high pressure value and a second low pressure value of the compression module; The current final operating frequency of the compression module is determined according to the first compression correction coefficient, the multiple system correction coefficients, the second high-pressure value, and the second low-pressure value.

8. The method according to claim 1, characterized in that When it is determined that the condensing module in the heating equipment meets the preset defrosting conditions, it also includes: Determine a first temperature difference between a current outlet temperature and a current inlet temperature of a heat exchange medium in a heat exchange module of the heating device; The step of determining the exit operation frequency of the compression module when exiting the defrost mode according to the initial operation frequency, the defrost operation frequency, and the final operation frequency includes: Comparing the final operating frequency with the initial operating frequency and the defrost operating frequency respectively to obtain a comparison result; wherein the defrost operating frequency is less than the initial operating frequency; An exit operation frequency of the compression module when exiting the defrost mode is determined according to the comparison result and the first temperature difference.

9. The method according to claim 8, characterized in that The step of determining the exit operation frequency of the compression module when exiting the defrost mode according to the comparison result and the first temperature difference includes: When the comparison result indicates that the final operating frequency is greater than the defrosting operating frequency, obtaining a second temperature difference between an outlet temperature and an inlet temperature of the heat exchange medium in the heat exchange module when the condensing module currently meets a preset defrosting stop condition; When it is determined that the heat exchange module currently meets the preset operating conditions according to the second temperature difference and the first temperature difference, and the comparison result indicates that the final operating frequency is less than or equal to the initial operating frequency, the initial operating frequency is determined as the exit operating frequency; When it is determined that the heat exchange module currently meets the preset operating conditions according to the second temperature difference and the first temperature difference, and the comparison result indicates that the final operating frequency is greater than the initial operating frequency, the final operating frequency is determined as the exit operating frequency.

10. The method according to claim 9, characterized in that The step of determining, based on the second temperature difference and the first temperature difference, whether the heat exchange module currently meets a preset operating condition includes: Determining an equivalent temperature difference corresponding to the second temperature difference according to the initial operating frequency, the defrosting operating frequency, the final operating frequency, and the second temperature difference; When it is determined that the equivalent temperature difference is less than or equal to the first temperature difference, it is determined that the heat exchange module currently meets the preset operating conditions.

11. The method according to claim 10, characterized in that The determining, according to the initial operating frequency, the defrosting operating frequency, the final operating frequency, and the second temperature difference, an equivalent temperature difference corresponding to the second temperature difference comprises: Get the preset temperature difference coefficient; Determining a maximum operating frequency from the final operating frequency and the initial operating frequency; Determining a ratio of the maximum operating frequency to the defrosting operating frequency; The temperature difference coefficient, the ratio, and the first temperature difference are multiplied to obtain an equivalent temperature difference corresponding to the second temperature difference.

12. The method according to claim 10, characterized in that The method further comprises: When it is determined that the equivalent temperature difference is greater than the first temperature difference, the compression module is controlled to stop running, and a preset auxiliary heat source module is controlled to heat the heat exchange medium entering the heat exchange module; Re-determining a third temperature difference between the outlet temperature and the inlet temperature of the heat exchange medium in the heat exchange module; Determining a new equivalent temperature difference corresponding to the third temperature difference; When the new equivalent temperature difference is less than or equal to the first temperature difference, the compression module is controlled to restart according to the final operating frequency or the initial operating frequency.

13. The method according to claim 8, characterized in that The method further comprises: When the comparison result indicates that the final operation frequency is less than or equal to the defrost operation frequency, the defrost operation frequency is determined as the exit operation frequency.

14. A defrosting device for heating equipment, characterized in that: Applied to heating equipment, the device comprises: A first determination module is used to determine the current initial operating frequency of the compression module and control the heating device to operate in a defrosting mode when it is determined that the condensing module in the heating device meets the preset defrosting condition; A second determining module is used to determine the defrost operation frequency of the compression module when the heating device is operating in the defrost mode, and control the compression module to operate at the defrost operation frequency; A third determination module is used to determine the current final operating frequency of the compression module when it is determined that the condensing module meets the preset defrosting stop condition; The fourth determination module is used to determine the exit operation frequency of the compression module when exiting the defrost mode according to the initial operation frequency, the defrost operation frequency, and the final operation frequency, and control the compression module to exit the defrost mode at the exit operation frequency.

15. A heating device, characterized in that: include: A processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; the memory is used to store a computer program; and the processor is used to implement the defrosting method for the heating equipment according to any one of claims 1 to 13 when executing the computer program.

16. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the defrosting method for the heating equipment according to any one of claims 1 to 13 is implemented.

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