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

Abstract

The application relates to a defrosting method and device of a heating device, the heating device and a storage medium. The method is applied to the heating device, and the method comprises the following steps: determining an initial running frequency of a compression module at present in the case of determining that a condensation module in the heating device meets a preset defrosting condition; determining a defrosting running frequency of the compression module in the process of running the heating device in a defrosting mode, and controlling the compression module to run at the defrosting running frequency; determining a final running frequency of the compression module at present in the case of determining that the condensation module meets a preset stop defrosting condition; determining an exit running frequency of the compression module when the compression module exits the defrosting mode according to the initial running frequency, the defrosting running frequency and the final running frequency, and controlling the compression module to exit the defrosting mode at the exit running frequency. Therefore, the running frequency of the compression module in the defrosting process of the heating device 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 a heating equipment, the heating equipment, and a storage medium. BACKGROUND

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

[0003] In actual application, when an air source heat pump unit is in heating operation, a condenser in the unit heats refrigerant in the system by absorbing heat in the air, so the surface temperature of the condenser is mostly lower than the air temperature, which easily causes water to condense on the condenser and thus frost to form, thereby reducing the heat transfer coefficient of the condenser and air and reducing the condensing efficiency.

[0004] Currently, for defrosting of the condenser, a compressor is generally controlled according to a preset frequency to transmit high-temperature and high-pressure refrigerant compressed by the compressor to the condenser for defrosting. However, in the process of defrosting, the water supply temperature in the air source heat pump unit is generally severely affected, which easily causes the water supply system to have accidents such as freeze cracking and water leakage, seriously affecting user experience. SUMMARY

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

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

[0007] In a case where it is determined that a condensing module in the heating equipment meets a preset defrosting condition, an initial operating frequency of a compression module is determined, and the heating equipment is controlled to operate in a defrosting mode;

[0008] In a case where it is determined that the condensing module meets a preset stop defrosting condition, a final operating frequency of the compression module is determined;

[0009] In a case where it is determined that the condensing module meets a preset stop defrosting condition, a final operating frequency of the compression module is determined;

[0010] According to the initial operating frequency, the defrosting operating frequency, and the final operating frequency, a final operating frequency of the compression module when the compression module exits the defrosting mode is determined, and the compression module is controlled to exit the defrosting mode at the final operating frequency.

[0011] As an optional implementation manner, the determining the initial operation frequency of the compression module comprises:

[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] determining the initial operation 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.

[0015] As an optional implementation manner, the determining the initial operation 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:

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

[0017]

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

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

[0020] obtaining a preset time interval;

[0021] determining the defrosting operation frequency of the compression module at a time according to the time interval.

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

[0023] obtaining an 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 an inlet temperature of a heat exchange module in the heating device;

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

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

[0027] Calculate the defrosting operation frequency of the compression module by a second preset formula on the second compression correction coefficient, the ambient temperature, and the inlet temperature, the second preset formula being as follows:

[0028]

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

[0030] As an optional implementation, the determining of the final operation frequency of the compression module currently comprises:

[0031] Obtain a second high-pressure pressure value and a second low-pressure pressure value of the compression module currently;

[0032] Determine the final operation frequency of the compression module currently according to the first compression correction coefficient, the plurality of system correction coefficients, the second high-pressure pressure value, and the second low-pressure pressure value.

[0033] As an optional implementation, in a case where the condensing module in the heating device meets a preset defrosting condition, further comprising:

[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 determining of the exit operation frequency of the compression module when exiting the defrosting mode according to the initial operation frequency, the defrosting operation frequency, and the final operation frequency comprises:

[0036] Compare the final operation frequency with the initial operation frequency and the defrosting operation frequency respectively to obtain a comparison result, wherein the defrosting operation frequency is less than the initial operation frequency;

[0037] Determine the exit operation frequency of the compression module when exiting the defrosting mode according to the comparison result and the first temperature difference.

[0038] As an optional implementation, the determining the exit operation frequency of the compression module when the defrosting mode is exited according to the comparison result and the first temperature difference comprises:

[0039] In a case where the comparison result represents that the final operation frequency is greater than the defrosting operation frequency, a second temperature difference between an outlet temperature and an inlet temperature of the heat exchange medium in the heat exchange module is obtained when the condensing module currently satisfies a preset stop defrosting condition.

[0040] In a case where the heat exchange module currently satisfies a preset operation condition according to the second temperature difference and the first temperature difference, and the comparison result represents that the final operation frequency is less than or equal to the initial operation frequency, the initial operation frequency is determined as the exit operation frequency.

[0041] In a case where the heat exchange module currently satisfies a preset operation condition according to the second temperature difference and the first temperature difference, and the comparison result represents that the final operation frequency is greater than the initial operation frequency, the final operation frequency is determined as the exit operation frequency.

[0042] As an optional implementation, the determining the heat exchange module currently satisfies a preset operation condition according to the second temperature difference and the first temperature difference comprises:

[0043] According to the initial operation frequency, the defrosting operation frequency, the final operation frequency, and the second temperature difference, an equivalent temperature difference corresponding to the second temperature difference is determined.

[0044] In a case where the equivalent temperature difference is less than or equal to the first temperature difference, it is determined that the heat exchange module currently satisfies a preset operation condition.

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

[0046] A preset temperature difference coefficient is obtained.

[0047] A maximum operation frequency is determined from the final operation frequency and the initial operation frequency.

[0048] A ratio of the maximum operation frequency to the defrosting operation frequency is determined.

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

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

[0051] In a case where 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] A third temperature difference between the outlet temperature and the inlet temperature of the heat exchange medium in the heat exchange module is re-determined.

[0053] A new equivalent temperature difference corresponding to the third temperature difference is determined.

[0054] In a case where the new equivalent temperature difference is less than or equal to the first temperature difference, the compression module is restarted according to the final running frequency or the initial running frequency.

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

[0056] In a case where the comparison result indicates that the final running frequency is less than or equal to the defrosting running frequency, the defrosting running frequency is determined as the exit running frequency.

[0057] In a second aspect, the present application provides a defrosting device of a heating device, applied to the heating device, the device comprising:

[0058] A first determining module is configured to determine an initial running frequency of a compression module in a case where a condensing module in the heating device meets a preset defrosting condition, and control the heating device to run in a defrosting mode.

[0059] A second determining module is configured to determine a defrosting running frequency of the compression module in a process in which the heating device runs in the defrosting mode, and control the compression module to run at the defrosting running frequency.

[0060] A third determining module is configured to determine a final running frequency of the compression module in a case where the condensing module meets a preset stop defrosting condition.

[0061] A fourth determining module is configured to determine an exit running frequency of the compression module when the defrosting mode is exited according to the initial running frequency, the defrosting running frequency, and the final running frequency, and control the compression module to exit the defrosting mode at the exit running 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 complete communication with each other through the communication bus; the memory is used to store a computer program; the processor is used to execute the computer program to implement the defrosting method of the heating device according to any one of the first aspect.

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

[0064] The technical scheme provided by the embodiments of the present application is that, in the case that it is determined that the condensing module in the heating device meets the preset defrosting condition, the initial running frequency of the compression module is determined, and the heating device is controlled to run in a defrosting mode; in the process of the heating device running in the defrosting mode, the defrosting running frequency of the compression module is determined, and the compression module is controlled to run at the defrosting running frequency; in the case that it is determined that the condensing module meets the preset stop defrosting condition, the final running frequency of the compression module is determined; according to the initial running frequency, the defrosting running frequency and the final running frequency, the exit running frequency of the compression module when exiting the defrosting mode is determined, and the compression module is controlled to exit the defrosting mode at the exit running frequency. This technical scheme controls the running frequency of the compression module when entering defrosting, dynamically determines the defrosting running frequency of the compression module according to the load index during defrosting, and determines the exit defrosting frequency of the compression module when exiting defrosting according to multiple running frequencies involved in the defrosting process of the compression module. The method intelligently adjusts the initial running frequency, the defrosting running frequency and the exit running frequency of the compression module during the entire defrosting process, intelligently adjusts the running frequency of the compression module during the entire defrosting process, thereby preventing the sudden change of water temperature caused by defrosting, and preventing accidents such as freezing and leakage of the water supply system, and intelligently adjusting the running frequency of the compression module of the heating device during defrosting, reducing the risk of failure during defrosting and freezing when exiting defrosting, and improving user experience. BRIEF DESCRIPTION OF DRAWINGS

[0065] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0066] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0067] One or more embodiments are exemplarily illustrated by pictures in the drawings corresponding thereto, and these exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. The drawings do not constitute a proportional limitation.

[0068] Figure 1 A structural schematic diagram of a heating device provided by an embodiment of the present application is shown in FIG. 1.

[0069] Figure 2 An embodiment flow chart of a defrosting method of a heating device provided by an embodiment of the present application is shown in FIG. 2.

[0070] Figure 3 An embodiment flow chart of another defrosting method of a heating device provided by an embodiment of the present application is shown in FIG. 3.

[0071] Figure 4 An embodiment flow chart of still another defrosting method of a heating device provided by an embodiment of the present application is shown in FIG. 4.

[0072] Figure 5 An embodiment flow chart of still another defrosting method of a heating device provided by an embodiment of the present application is shown in FIG. 5.

[0073] Figure 6 An embodiment flow chart of still another defrosting method of a heating device provided by an embodiment of the present application is shown in FIG. 6.

[0074] Figure 7 An embodiment block diagram of a defrosting device of a heating device provided by an embodiment of the present application is shown in FIG. 7.

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

[0076] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0077] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of the specific examples are described in the following. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to the numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and it does not indicate the relationship between the various embodiments and / or arrangements discussed.

[0078] In order to solve the technical problem that the defrosting method for the heating device in the prior art is prone to cause freezing and cracking, water leakage and other accidents of the water supply system, and seriously affects the user experience, the application provides a defrosting method for a heating device, which can control the operation frequency of the compression module when entering defrosting, dynamically determine the defrosting operation frequency of the compression module according to the load index of defrosting during the defrosting process, and determine the defrosting exit frequency of the compression module when exiting defrosting according to the multiple operation frequencies involved in the defrosting process of the compression module after the defrosting is completed. The method can intelligently adjust the initial operation frequency, defrosting operation frequency and exit operation frequency of the compression module during the entire defrosting process, intelligently adjust the operation frequency of the compression module during the entire defrosting process, prevent the sudden change of the frequency caused by defrosting and the sudden drop of the water temperature, and prevent freezing and cracking, water leakage and other accidents of the water supply system, thereby realizing intelligent adjustment of the operation frequency of the compression module of the heating device during defrosting, reducing the risk of failure during defrosting and freezing during defrosting exit, and improving the user experience.

[0079] In order to facilitate understanding of the defrosting method for the heating device provided by the application, the structure of the heating device related to the application will be exemplarily described below.

[0080] Referring to Figure 1 A structure diagram of a heating device provided by an embodiment of the application is shown in the figure. Figure 1 As shown in the figure, the heating device 100 can include a compressor 1, an exhaust temperature sensing bag 2, a high-pressure sensor 3, a four-way valve 4, an environment temperature sensing bag 5, a fin condenser 6, a main path electronic expansion valve 7, an auxiliary path electronic expansion valve 8, an economizer 9, a jacket heat exchanger 10, a water flow switch 11, an inlet water temperature sensing bag 12, an outlet water temperature sensing bag 13, a gas-liquid separator 14 and a low-pressure sensor 15.

[0081] The above-mentioned heating device 100 can be an air source heat pump unit, or can be other types of heating devices, and the embodiments of the application do not limit this.

[0082] The above-mentioned compressor 1 can be a compression module in the heating device, which can be used to compress the refrigerant in the entire system to compress the low-temperature and low-pressure refrigerant into high-temperature and high-pressure refrigerant. The compressor 1 can be a low-pressure stage compressor, or can be a high-pressure stage compressor, and the embodiments of the application do not limit this. The above-mentioned refrigerant can be fluorine, or can be other medium, such as carbon dioxide, and the embodiments of the application do not limit this.

[0083] The above-mentioned exhaust temperature sensing bag 2 can be a temperature sensor in the heating device, which is used to measure the temperature of the high-temperature and high-pressure refrigerant discharged by the compressor 1, and the embodiments of the application do not limit the type of the exhaust temperature sensing bag 2.

[0084] The high pressure sensor 3 and the low pressure sensor 15 are respectively used for measuring the high pressure value of the discharged refrigerant in the compressor 1 and the low pressure value of the incoming refrigerant. The type of the high pressure sensor 3 and the low pressure sensor 15 is not limited in the embodiment.

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

[0086] The ambient temperature sensing bulb 5 is used for measuring the ambient temperature value of the finned condenser 6. The type and installation mode of the ambient temperature sensing bulb 5 are not limited in the embodiment.

[0087] The finned condenser 6 is used as a condensing module in the heating device, which is used for heating the refrigerant by absorbing the heat in the air to obtain low temperature and low pressure refrigerant.

[0088] The main path electronic expansion valve 7 and the auxiliary path electronic expansion valve 8 are used for adjusting the refrigerant flow in the system. The type of the electronic expansion valve 7 and the electronic expansion valve 8 is not limited in the embodiment.

[0089] The economizer 9 is used for refrigerating the refrigerant in the system. The type of the economizer 9 is not limited in the embodiment.

[0090] The jacket heat exchanger 10 is used as a heat exchange module in the heating device, which is used for absorbing the heat of the high temperature and high pressure refrigerant output by the compressor 1 through the heat exchange medium (for example, water), so as to heat the indoor environment through the heat exchange medium to achieve the heating effect.

[0091] The water flow switch 11 is used for controlling the flow of the heat exchange medium (for example, water) flowing into the jacket heat exchanger 10.

[0092] The water inlet temperature sensing bulb 12 and the water outlet temperature sensing bulb 13 are respectively used for measuring the inlet temperature and the outlet temperature of the jacket heat exchanger 10. The type of the water inlet temperature sensing bulb 12 and the water outlet temperature sensing bulb 13 is not limited in the embodiment.

[0093] The gas-liquid separator 14 is used for separating the liquid refrigerant and the gaseous refrigerant in the system. The type of the gas-liquid separator 14 is not limited in the embodiment.

[0094] In actual application, when the heating device 100 is in heating operation, the compressor 1 compresses the low-temperature and low-pressure refrigerant to obtain high-temperature and high-pressure refrigerant. Then, the high-temperature and high-pressure refrigerant flows into the tube heat exchanger 10 through the four-way valve 4 to heat the heat exchange medium therein, and low-temperature and medium-temperature refrigerant is obtained. After that, the low-temperature and medium-temperature refrigerant flows into the economizer 9 to be further cooled to obtain liquid refrigerant. The liquid refrigerant flows into the finned condenser 6 through the electronic expansion valve 7 and / or the electronic expansion valve 8. The finned condenser 6 heats the liquid refrigerant by absorbing heat from the air to obtain 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 to be compressed again, thereby completing a cycle.

[0095] In the heating operation of the heating device, the finned condenser 6 heats the refrigerant in the system by absorbing heat from the air, so the surface temperature of the finned condenser 6 is usually lower than the air temperature, which can easily cause water to condense on the finned condenser 6 and form frost, thereby reducing the heat transfer coefficient between the finned condenser 6 and the air and reducing the condensation efficiency.

[0096] At present, defrosting of the finned condenser 6 is generally achieved by controlling the compressor 1 to transmit the compressed high-temperature and high-pressure refrigerant to the finned condenser 6 at a preset frequency. However, in the defrosting process, the water supply temperature (temperature when the heat exchange medium flows in) of the tube heat exchanger 10 is usually severely affected, which can easily cause accidents such as freeze cracking and water leakage in the water supply system, seriously affecting the user experience.

[0097] To solve the above problems, the present application provides a defrosting method of a heating device, which can reduce the risk of failure in the defrosting process and freezing when exiting the defrosting process, and improve the user experience.

[0098] Referring to Figure 2 An embodiment flowchart of a defrosting method of a heating device provided by the present application is shown. Figure 2 The flowchart can be applied to a heating device, for example Figure 1 The heating device 100 shown. As Figure 2 The flowchart can include the following steps:

[0099] Step 201, when it is determined that the defrosting condition of the condensing module in the heating device meets the preset defrosting condition, the initial operating frequency of the compression module is determined, and the heating device is controlled to operate in a defrosting mode.

[0100] The above-mentioned heating device refers to a device for heating the indoor environment, for example Figure 1 The heating device 10 shown.

[0101] The condensing module refers to a module for heating refrigerant in the heating device, for example Figure 1 The finned condenser 6 in the structure shown can heat the inflowing refrigerant by absorbing heat from the air.

[0102] The defrosting condition refers to a condition for characterizing the frosting of the condensing module, and the condensing module needs to be defrosted.

[0103] The initial operating frequency refers to the initial operating frequency of the compression module when the condensing module meets the preset defrosting condition and enters the defrosting mode.

[0104] The defrosting mode refers to an operating mode of the heating device, which can include a heating mode, a defrosting mode, and a refrigeration mode, and the present application does not limit this. The refrigerant flow directions of the heating mode and the defrosting mode of the heating device are different, for example Figure 1 As shown in the heating device, when the heating device is in the heating mode, the high-temperature and high-pressure refrigerant compressed by the compressor 1 flows to the jacketed heat exchanger 10, and when the heating device is in the defrosting mode or the refrigeration mode, the high-temperature and high-pressure refrigerant compressed by the compressor 1 flows to the finned heat exchanger 6 for heating the finned heat exchanger, thereby melting the frost generated by the finned heat exchanger 6.

[0105] In the present application, the execution subject of the present application can be a heating device. In order to avoid the frosting of the condensing module in the heating device and thus reduce the operating efficiency of the device, the heating device can determine whether the condensing module meets the preset defrosting condition in real time.

[0106] As an optional implementation manner, the heating device can acquire the characteristic value of the condensing module in real time or at regular intervals, and determine whether the condensing module meets the defrosting condition according to the characteristic value. The characteristic value can include the color of the condensing module, the thickness of the frost, or the weight of the frost, and the present application does not limit this.

[0107] As an exemplary implementation manner, the characteristic value of the condensing module can be determined by resistance measurement, infrared measurement, or gravity measurement.

[0108] Optionally, in the case where it is determined that the condensing module meets the defrosting condition, the initial operating frequency of the compression module can be determined, and the heating device is controlled to operate in the defrosting mode, thereby defrosting the condensing module.

[0109] As to how to determine the initial operating frequency of the compression module, the following Figure 3 The flowchart shown will be described below, which will not be described in detail here.

[0110] Step 202, during the process that the heating device operates in the defrosting mode, determine the defrosting operation frequency of the compression module, and control the compression module to operate at the defrosting operation frequency.

[0111] The defrosting operation frequency refers to the operation frequency of the compression module when defrosting the condensing module in real time or at a preset time interval. The defrosting operation frequency can vary in real time or at a preset time interval, rather than being fixed.

[0112] In the embodiment, when the heating device starts to operate in the defrosting mode, the flow direction of the refrigerant is opposite to that in the heating mode, and the refrigerant is changed from heating to cooling the heat exchange module. Therefore, to prevent the cooling rate of the refrigerant on the heat exchange module from being too fast to cause freezing at the inlet of the heat exchange medium of the heat exchange module, the operation frequency of the compression module can be gradually decreased from the initial operation frequency when the compression module operates in the defrosting mode.

[0113] Therefore, the heating device can determine the defrosting operation frequency of the compression module during the process that the heating device operates in the defrosting mode, and control the compression module to operate at the defrosting operation frequency. The defrosting operation frequency is less than the initial operation frequency.

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

[0115] As another optional implementation, the heating device can determine the defrosting operation frequency of the compression module at a preset time interval.

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

[0117] As to how to determine the defrosting operation frequency of the compression module, the process will be described below, and will not be described in detail here. Figure 4

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

[0119] Step 204, according to the initial operation frequency, the defrosting operation frequency, and the final operation frequency, determine the exit operation frequency of the compression module when the compression module exits the defrosting mode, and control the compression module to exit the defrosting mode at the exit operation frequency.

[0120] The steps 203 and 204 will be described together as follows:

[0121] ​The defrosting stopping condition refers to a condition for indicating that the defrosting of the condenser has been completed or the current defrosting mode can be exited, for example, determining that the current condenser surface has no frost or less frost and no longer has an impact on the heating operation of the heating device.

[0122] The final operation frequency refers to a final operation frequency of the compression module under the current operation condition when the condensing module meets the defrosting stopping condition, which is determined according to a preset method. The final operation frequency and the determination method of the defrosting operation frequency are different.

[0123] In the embodiment of the present application, the heating device can determine whether the condensing module meets the preset defrosting stopping condition in real time during the operation in the defrosting mode.

[0124] As an optional implementation manner, the heating device can acquire the representation value of the condensing module in real time or at a fixed time, and determine whether the condenser meets the defrosting stopping condition according to the representation value. The representation value can include the color of the condensing module, the thickness of the frost, or the weight of the frost, and the present application does not limit this.

[0125] Optionally, when it is determined that the condensing module meets the defrosting stopping condition, the final operation frequency of the compression module under the current operation condition can be determined.

[0126] As to how to determine the final operation frequency, the process shown in FIG. 6 will be described below, which will not be described in detail here. Figure 3

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

[0128] As to how to determine the exit operation frequency of the compression module when exiting the defrosting mode according to the initial operation frequency, the defrosting operation frequency, and the final operation frequency, the process shown in FIG. 7 will be described below, which will not be described in detail here. Figure 5

[0129] In addition, in order to prevent the freezing phenomenon of the heat exchange module during the defrosting process, the heating device 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 defrosting mode can be continued.

[0131] On the contrary, if the outlet temperature is less 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 is started to heat the heat exchange medium in the heat exchange module. When the outlet temperature is greater than or equal to the temperature threshold, the defrosting mode is continued.

[0132] The technical scheme provided by the embodiment of the present application determines the initial running frequency of the compression module under the condition that the condensation module of the heating device meets the preset defrosting condition, and controls the heating device to run in the defrosting mode. During the process of the heating device running in the defrosting mode, the defrosting running frequency of the compression module is determined, and the compression module is controlled to run at the defrosting running frequency. Under the condition that the condensation module meets the preset stop defrosting condition, the final running frequency of the compression module is determined, the exit running frequency of the compression module when exiting the defrosting mode is determined according to the initial running frequency, the defrosting running frequency, and the final running frequency, and the compression module is controlled to exit the defrosting mode at the exit running frequency. This technical scheme controls the running frequency of the compression module when entering the defrosting mode, dynamically determines the defrosting running frequency of the compression module according to the load index during the defrosting process, and determines the exit defrosting frequency of the compression module when exiting the defrosting mode according to multiple running frequencies involved in the defrosting process of the compression module. The method intelligently adjusts the initial running frequency, the defrosting running frequency, and the exit running frequency of the compression module during the entire defrosting process, intelligently adjusts the running frequency of the compression module during the entire defrosting process, prevents the water temperature from suddenly dropping due to the sudden change of the frequency caused by defrosting, and prevents accidents such as freezing and leakage of the water supply system, realizes intelligent adjustment of the running frequency of the compression module of the heating device during the defrosting process, reduces the risk of freezing during the defrosting process and freezing when exiting the defrosting, and improves the user experience.

[0133] Further, when determining the running frequency of the compression module, the pressure value of the compression module also needs to be considered. Therefore, the embodiment of the present application provides another defrosting method of a heating device.

[0134] Referring to Figure 3 The embodiment flow chart of another defrosting method of a heating device provided by the embodiment of the present application is shown. Figure 3 The flow chart is shown in Figure 2 Based on the flow chart shown in Figure 3 The flow chart can include the following steps:

[0135] Step 301: If the condenser module in the heating equipment meets the preset defrosting conditions, determine the first compression correction coefficient of the compression module and obtain multiple preset system correction coefficients.

[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 based on the first compression correction coefficient, multiple system correction coefficients, the first high pressure value, and the first low pressure value.

[0138] The following provides a unified explanation of steps 301 to 303:

[0139] The aforementioned 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 module parameters may include the parameters of the four-way valve, the displacement of the compression module, etc.

[0140] The above system correction parameters are correction parameters determined in advance based on the refrigerant.

[0141] The aforementioned 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 aforementioned first low-pressure value refers to the pressure value of the low pressure corresponding to the compression module when the condenser module meets the defrosting conditions.

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

[0144] As an optional implementation, when determining the aforementioned first compression correction coefficient, the compressor's correction coefficient (this correction coefficient is an empirical coefficient, and its value ranges from 1 to 1.6) and the four-way valve in the heating equipment (e.g.) can be obtained. Figure 1 The leakage of the four-way valve 4) shown, and the displacement of the compressor, are multiplied by the above correction factor, leakage, and displacement to obtain the first compression correction factor.

[0145] As an optional implementation, the aforementioned multiple system correction coefficients can be preset by technicians and stored in a preset storage medium. Therefore, the heating equipment can directly obtain the aforementioned multiple system correction coefficients from the aforementioned storage medium.

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

[0147] As an optional implementation, the first high-pressure value and the first low-pressure value of the compression module can be obtained by a high-pressure sensor (for example, the high-pressure sensor 3 shown in FIG. 1) and a low-pressure sensor (for example, the low-pressure sensor 15 shown in FIG. 1) installed respectively. Figure 1 Figure 1 As an optional implementation, the first high-pressure value and the first low-pressure value of the compression module can be obtained by a high-pressure sensor (for example, the high-pressure sensor 3 shown in FIG. 1) and a low-pressure sensor (for example, the low-pressure sensor 15 shown in FIG. 1) installed respectively.

[0148] Based on this, the initial operation frequency of the compression module can be 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.

[0149] As an optional implementation, the initial operation frequency of the compression module can be calculated by the first preset formula according to the first compression correction coefficient, the plurality of system correction coefficients, the first high-pressure value, and the first low-pressure value. The first preset formula can be as shown in the following formula (I):

[0150]

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

[0152] Further, when the initial operation frequency determined is a decimal number, the initial operation frequency can be rounded, so that the compression module operates at the rounded initial operation frequency.

[0153] Step 304: When it is determined that the condensing module meets the preset defrosting stopping condition, the second high-pressure value and the second low-pressure value of the compression module at present are obtained.

[0154] Step 305: The final operation frequency of the compression module at present is determined according to the first compression correction coefficient, the plurality of system correction coefficients, the second high-pressure value, and the second low-pressure value.

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

[0156] The 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 stopping condition.

[0157] The first low-pressure value refers to the pressure value of the low pressure corresponding to the compression module when the condensing module meets the preset defrosting stopping condition.​

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

[0159] As an optional implementation manner, the second high-pressure value and the second low-pressure value of the compression module can be obtained through the installed high-pressure sensor (for example, the high-pressure sensor 3 shown in FIG. 1) and the low-pressure sensor (for example, the low-pressure sensor 15 shown in FIG. 1), respectively. Figure 1 Figure 1 As an optional implementation manner, the second high-pressure value and the second low-pressure value of the compression module can be obtained through the installed high-pressure sensor (for example, the high-pressure sensor 3 shown in FIG. 1) and the low-pressure sensor (for example, the low-pressure sensor 15 shown in FIG. 1), respectively.

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

[0161] As an optional implementation manner, the initial running frequency of the compression module can be obtained by calculating the first compression coefficient, the plurality of system correction coefficients, the first high-pressure value, and the first low-pressure value through a preset formula. The preset formula can be as shown in the following formula (II):

[0162]

[0163] In the formula, F1 represents the initial running frequency, A represents the first compression correction coefficient, X, Y, and Z represent the system correction coefficients, P1 represents the second high-pressure value, and P2 represents the second low-pressure value. h2 In the formula, F1 represents the initial running frequency, A represents the first compression correction coefficient, X, Y, and Z represent the system correction coefficients, P1 represents the second high-pressure value, and P2 represents the second low-pressure value. l2 In the formula, F1 represents the initial running frequency, A represents the first compression correction coefficient, X, Y, and Z represent the system correction coefficients, P1 represents the second high-pressure value, and P2 represents the second low-pressure value.

[0164] Further, when the determined initial running frequency is a decimal number, the initial running frequency can be subjected to an integer operation, so as to control the compression module to run at the integer operation result of the initial running frequency.

[0165] ​The technical scheme provided in the embodiments of the present application can determine the first compression correction coefficient of the compression module when it is determined that the condensation module of the heating device meets the preset defrosting condition, acquire a plurality of preset system correction coefficients, acquire the current first high-pressure pressure value and the first low-pressure pressure value of the compression module, and determine the initial operation frequency of the compression module according to the first compression correction coefficient, the plurality of system correction coefficients, the first high-pressure pressure value, and the first low-pressure pressure value. This technical scheme can determine the initial operation frequency and the final operation frequency of the compressor more accurately by determining the compression correction coefficient of the compressor and a plurality of preset system correction coefficients, and determining the initial operation frequency and the final operation frequency of the compressor according to the corresponding high-pressure pressure value and low-pressure pressure value of the compressor.

[0166] Further, during the operation of the heating device in the defrosting mode, the inlet temperature of the heat exchange medium in the heat exchange module also needs to be considered when determining the defrosting operation power of the compression module, so as to prevent the initial freezing phenomenon of the heat exchange module. For this purpose, the embodiments of the present application provide another defrosting method of a heating device.

[0167] Referring to Figure 4 An embodiment flowchart of another defrosting method of a heating device provided in the embodiments of the present application is shown. Figure 4 The flowchart shown in Figure 2 Based on the flowchart shown in Figure 4 The flowchart can include the following steps:

[0168] Step 401: Acquire the ambient temperature of the condensation module before the heating device operates in the defrosting mode.

[0169] The ambient temperature refers to the ambient temperature value of the condensation module when the condensation module of the heating device meets the preset defrosting condition.

[0170] In the embodiments of the present application, when the heating device determines the defrosting operation frequency of the compression module, the ambient temperature of the condensation module when it meets the defrosting condition can be determined first.

[0171] As an optional implementation manner, when the heating device determines that the condensation module meets the defrosting condition, the ambient temperature of the condensation module at this time can be acquired and stored in a preset storage medium. Based on this, during the operation of the heating device in the defrosting mode, the ambient temperature can be directly acquired from the storage medium.

[0172] As an exemplary implementation manner, the heating device can directly acquire the ambient temperature of the condensation module through the temperature sensor (for example, a thermistor) installed on the condensation module. Figure 1The ambient temperature sensing bulb 5 shown obtains the ambient temperature.

[0173] Step 402, obtaining a preset second compression correction coefficient of the compressor module.

[0174] Step 403, collecting an inlet temperature of the heat exchange module in the heating device.

[0175] Step 404, determining a defrosting operation frequency of the compression module according to the second compression correction coefficient, the ambient temperature, and the inlet temperature.

[0176] The following uniformly describes the steps 402 to 404:

[0177] The second compression correction coefficient refers to a preset correction coefficient corresponding to the determination of the operation frequency of the compression module according to the ambient temperature, which can be 3600000 or other values, and the embodiments of the present application do not limit this.

[0178] The inlet temperature refers to the temperature at the inlet of the heat exchange medium flowing into the heat exchange module of the heating device, and the heat exchange medium can be water or other medium, and the embodiments of the present application do not limit this.

[0179] In the embodiments of the present application, in order to prevent the freezing phenomenon at the inlet of the heat exchange module when determining the defrosting operation frequency of the compression module, the inlet temperature of the heat exchange module in the heating device can be collected, and the defrosting operation frequency of the compression module is determined according to the second compression correction coefficient, the ambient temperature, and the inlet temperature.

[0180] As an optional implementation manner, when collecting the inlet temperature of the heat exchange module in the heating device, the temperature sensor (for example Figure 1 The water inlet temperature sensing bulb 12 shown obtains the inlet temperature.

[0181] As an optional implementation manner, 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 as shown in the following formula (three):

[0182]

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

[0184] Further, when the defrosting operation frequency is a decimal number, the defrosting operation frequency can be rounded, so that the compressor module operates according to the rounded defrosting operation frequency.

[0185] The technical scheme provided by the embodiments of the present application comprises the following steps: obtaining the ambient temperature of the condensing module before the heating device operates in the defrosting mode, obtaining a second compression correction coefficient of the compressor module, collecting the inlet temperature of the heat exchange module in the heating device, and determining the defrosting operation frequency of the compressor module according to the second compression correction coefficient, the ambient temperature and the inlet temperature. This technical scheme can dynamically adjust the defrosting operation frequency of the compressor module according to the inlet temperature of the heat exchange module and the ambient temperature of the condensing module when the condensing module meets the defrosting condition, so that the defrosting operation frequency of the compressor module is dynamically adjusted, the adaptability of the compressor module is improved, and the safety problems such as excessively high defrosting pressure and freezing of the heat exchange module are avoided.

[0186] Further, in order to prevent the running frequency of the compressor module from suddenly changing when the compressor module exits the defrosting mode, 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 can be considered when determining the exit running frequency of the compressor module when the compressor module exits the defrosting mode. For this purpose, the embodiments of the present application provide another defrosting method of a heating device.

[0187] Referring to Figure 5 The embodiment flowchart of another defrosting method of a heating device provided by the embodiments of the present application is shown in the following table. Figure 5 The flowchart shown in Figure 2 Based on the flowchart shown in the above table, how to determine the exit running frequency of the compressor module when the compressor module exits the defrosting mode according to the initial running frequency, the defrosting operation frequency and the final running frequency is further described. As shown in the following table, Figure 5 The flowchart can comprise the following steps:

[0188] Step 501: When it is determined that the condensing module in the heating device meets the preset defrosting condition, a 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 is determined.

[0189] The first temperature difference refers to the temperature difference between the outlet temperature and the inlet temperature of the heat exchange module in the heating device when the condensing module in the heating device meets the preset defrosting condition.

[0190] As an optional implementation, when it is determined that the condensing module in the heating device meets the preset defrosting condition, the outlet temperature and the inlet temperature of the heat exchange module can be obtained through the temperature sensor (for example, the outlet temperature sensor 13 shown in FIG. 1) installed at the outlet of the heat exchange module and the temperature sensor (for example, the inlet temperature sensor 12 shown in FIG. 1) installed at the inlet of the heat exchange module, respectively. Figure 1 Figure 1

[0191] As an exemplary implementation, the outlet temperature can be subtracted from the inlet temperature to obtain the first temperature difference.

[0192] As another exemplary implementation, the inlet temperature can be subtracted from the outlet temperature to obtain the first temperature difference.

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

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

[0195] Step 503: According to the comparison result and the first temperature difference, the exit running frequency of the compressor module when exiting the defrosting mode is determined.

[0196] The following describes steps 502 and 503:

[0197] In the embodiment of the present application, when the stop defrosting condition of the compressor module is determined, the first temperature difference can be obtained, and the final running frequency is compared with the initial running frequency and the defrosting running frequency respectively to obtain a comparison result. Since the running frequency of the compressor module is reduced when the compressor module enters the defrosting mode, the initial running frequency is greater than the defrosting running frequency.

[0198] As an optional implementation, as described in step 501, after the first temperature difference is determined, the first temperature difference can be stored in a preset storage medium, and based on this, the heating device can obtain the first temperature difference from the storage medium.

[0199] Then, according to the comparison result and the first temperature difference, the exit running frequency of the compressor module when exiting the defrosting mode is determined.

[0200] As an optional implementation, the comparison result of the final running frequency and the defrosting running frequency can be determined first.

[0201] ​​Optionally, when the comparison result indicates that the final running frequency is less than or equal to the defrosting running frequency, the defrosting running frequency can be directly determined as the exit running frequency. In this case, when the compression module exits the defrosting mode at the defrosting running frequency, the freezing phenomenon at the inlet of the heat exchange module will not occur.

[0202] Optionally, when the comparison result indicates that the final running frequency is greater than the defrosting running frequency, if the compression module exits the defrosting mode at the defrosting running frequency, the freezing phenomenon at the inlet of the heat exchange module will occur due to the excessively low temperature of the inlet of the heat exchange module. Therefore, when the condensing module satisfies the preset defrosting stopping condition, a second temperature difference between the outlet temperature and the inlet temperature of the heat exchange medium in the heat exchange module can be obtained.

[0203] As an optional implementation, when the condensing module in the heating device satisfies the preset defrosting stopping condition, the outlet temperature and the inlet temperature of the heat exchange module can be obtained by the temperature sensor (for example, the outlet temperature sensing bulb 13 shown in FIG. 1) installed at the outlet of the heat exchange module and the temperature sensor (for example, the inlet temperature sensing bulb 12 shown in FIG. 1) installed at the inlet of the heat exchange module, respectively. Figure 1 Figure 1 As an exemplary implementation, the second temperature difference can be obtained by subtracting the inlet temperature from the outlet temperature.

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

[0205] After that, whether the heat exchange module currently satisfies the preset running condition can be determined according to the first temperature difference and the second temperature difference. The running condition refers to the condition under which the heat exchange module can continue to run, that is, the condition under which the freezing phenomenon will not occur at the heat exchange module if the compression module continues to run when exiting the defrosting mode.

[0206] Optionally, when it is determined that the heat exchange module currently satisfies the preset running condition, the comparison result of the final running frequency and the initial running frequency can be obtained. In this case, it has been compared that the final running frequency is greater than the defrosting running frequency.

[0207] As an implementation, if the comparison result indicates that the final running frequency is less than or equal to the initial running frequency, the initial running frequency can be determined as the exit running frequency.

[0208] As an implementation, if the comparison result indicates that the final running frequency is greater than the initial running frequency, the final running frequency can be determined as the exit running frequency.

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

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

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

[0212]

[0213] The Δt' is the equivalent temperature difference, the C is the temperature difference coefficient (which can be 0.8), the max(F1, F2) is the maximum operation frequency of the final operation frequency and the initial operation frequency, the F0 is the defrosting operation frequency, and the Δt is the second temperature difference.

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

[0215] Optionally, when the equivalent temperature difference is determined to be greater than the first temperature difference, it indicates that the temperature difference of the heat exchange module is too large at this time, and if the compression module continues to operate, the inlet of the heat exchange module is prone to freezing. Therefore, the compression module can be controlled to stop operating.

[0216] Then, 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] After that, a third temperature difference between the outlet temperature and the inlet temperature of the heat exchange medium in the heat exchange module can be determined again, and a new equivalent temperature difference corresponding to the third temperature difference can be determined again according to the above formula (four).

[0218] Optionally, when the new equivalent temperature difference is determined to be less than or equal to the first temperature difference, the compression module can be restarted according to the final operation frequency or the initial operation frequency. As an exemplary embodiment, the compression module can be restarted according to the maximum operation frequency of the final operation frequency and the initial operation frequency.

[0219] Further, the first temperature difference can be re-determined, for example, the first temperature difference is increased by a preset value (for example, 2℃) to obtain a new first temperature difference. Then, in a case where the new equivalent temperature difference is determined to be less than or equal to the new first temperature difference, the compression module can be controlled to restart according to the final operating frequency or the initial operating frequency.

[0220] On the contrary, in a case where the new equivalent temperature difference is determined to be greater than the first temperature difference, the auxiliary heat source module can continue to heat the heat exchange medium entering the heat exchange module.

[0221] The technical scheme provided by the embodiments of the present application comprises the following steps: determining 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 a heating device in a case where a condensation module in the heating device meets a preset defrosting condition; comparing the final operating frequency with an initial operating frequency and a defrosting operating frequency respectively in a case where the condensation module meets a preset stop defrosting condition to obtain a comparison result, wherein the defrosting operating frequency is less than the initial operating frequency; and determining an exit operating frequency of the compression module when the compression module exits the defrosting mode according to the comparison result and the first temperature difference. The technical scheme determines the exit operating frequency of the compression module when the compression module exits the defrosting mode according to the first difference between the outlet temperature and the inlet temperature of the heat exchange module when the condensation 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, which 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, and thus more accurately determines the operating frequency of the compression module when the compression module exits the defrosting mode.

[0222] Referring to Figure 6 Another embodiment of a defrosting method of a heating device is provided in the embodiments of the present application. As shown in Figure 6 The flowchart can comprise the following contents:

[0223] Firstly, after the heating device receives a heating start instruction, it can be determined whether the preset defrosting condition is met. When the device meets the preset defrosting condition, the entering frequency F1 (initial operating frequency) can be calculated according to the method shown in the above formula (I), the calculation result is rounded, and the maximum temperature difference △T (first temperature difference) of the heat exchange module when entering the defrosting mode for the first time is saved.

[0224] Then, the compression module is stably operated at F1 to FO (defrosting operating frequency) after entering the defrosting mode, wherein the calculation of FO can be determined by the method shown in the above formula (III), the calculation result is rounded, and F0 is calculated every 30 seconds during the defrosting process, and the time can be set.

[0225] After that, it can be determined in real time whether the preset defrosting stopping condition is met at present. When the defrosting stopping condition is met, F2 (exit running frequency) is calculated according to the method shown in the above formula (two). When F2 is less than or equal to FO, the compression module can directly operate in the reverse direction according to FO to exit the defrosting mode. When F2 is greater than FO, the current temperature difference (second temperature difference) is collected, and the equivalent temperature difference Δt' (equivalent temperature difference) corresponding to the second temperature difference is determined according to the method shown in the above formula (four). Then, Δt' (equivalent temperature difference) is compared with ΔT (first temperature difference).

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

[0227] Optionally, if Δt' is greater than ΔT, standby is performed, the auxiliary heat source is started to heat the water inlet temperature in the heat exchange module, so as to reduce the temperature difference, so that Δt' is less than or equal to ΔT (or a new first temperature difference is obtained by increasing ΔT by 2℃), and then the heating mode is entered according to the maximum running frequency (the maximum value of F1 and F2).

[0228] Optionally, if Δt' is greater than ΔT, standby is performed, the auxiliary heat source is started to heat the water inlet temperature in the heat exchange module, so as to reduce the temperature difference, so that Δt' is less than or equal to ΔT (or a new first temperature difference is obtained by increasing ΔT by 2℃), and then the heating mode is entered according to the maximum running frequency (the maximum value of F1 and F2).

[0229] The technical scheme provided by the embodiments of the present application can determine the defrosting entering frequency F1, the defrosting coupling frequency F0 and the defrosting exit frequency F2 of the heating equipment, so as to solve the anti-freezing problem and improve the running adaptability and reduce the safety problems such as too high defrosting pressure and water-side heat exchanger freezing.

[0230] Referring to Figure 7 , an embodiment block diagram of a defrosting device of a heating equipment provided by the embodiments of the present application is provided. As an embodiment, the device can be applied to a heating equipment, for example Figure 1 , the heating equipment 100 shown in the figure. As shown in Figure 7 , the device can include:

[0231] A first determination module 71 is configured to determine the initial running frequency of the compression module at present when the condensation module in the heating equipment meets the preset defrosting condition, and control the heating equipment to run in the defrosting mode.

[0232] A second determination module 72 is configured to determine the defrosting running frequency of the compression module during the running of the heating equipment in the defrosting mode, and control the compression module to run at the defrosting running frequency.

[0233] The third determining module 73 is configured to determine a final running frequency of the compression module currently when it is determined that the condensing module meets the preset defrosting stopping condition.

[0234] The fourth determining module 74 is configured to determine an exit running frequency of the compression module when the compression module exits the defrosting mode according to the initial running frequency, the defrosting running frequency and the final running frequency, and control the compression module to exit the defrosting mode at the exit running frequency.

[0235] As shown in Figure 8 Another structure schematic diagram of a heating device is provided in the embodiment of the present application, which comprises 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 complete mutual communication through the communication bus 84,

[0236] The memory 83 is configured to store a computer program.

[0237] In an embodiment of the present application, the processor 81 is configured to execute the program stored in the memory 83, and realize the defrosting method of the heating device provided in any one of the preceding method embodiments, which comprises the following steps:

[0238] When it is determined that a condensing module in the heating device meets a preset defrosting condition, an initial running frequency of a compression module currently is determined, and the heating device is controlled to run in a defrosting mode.

[0239] During the process that the heating device runs in the defrosting mode, a defrosting running frequency of the compression module is determined, and the compression module is controlled to run at the defrosting running frequency.

[0240] When it is determined that the condensing module meets a preset defrosting stopping condition, a final running frequency of the compression module currently is determined.

[0241] According to the initial running frequency, the defrosting running frequency and the final running frequency, an exit running frequency of the compression module when the compression module exits the defrosting mode is determined, and the compression module is controlled to exit the defrosting mode at the exit running frequency.

[0242] The embodiment of the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the defrosting method of the heating device provided in any one of the preceding method embodiments.

[0243] The apparatus embodiments described above are only illustrative, and the units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment.

[0244] Through the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be implemented by means of software plus a general hardware platform, and of course can also be implemented by hardware. Based on such understanding, the above technical solutions 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 a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in the embodiments or some parts of the embodiments.

[0245] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically indicated as such. It is also to be understood that additional or alternative steps can be employed.

[0246] The above description is merely illustrative of the application and should not be taken as limiting. Numerous variations and modifications will occur to those skilled in the art, and are intended to be included within the spirit and scope of the application, as defined by the appended claims. The order of execution or performance of the elements of the methods presented herein should not be construed as limiting unless specifically stated. Further, the described embodiments can be implemented in a variety of environments and systems.

Claims

1. A defrosting method of a heating device, characterized by, The method is applied to a heating device, and comprises the following steps: In a case where it is determined that a condensing module in the heating device meets a preset defrosting condition, an initial running frequency of a compression module at present is determined, and the heating device is controlled to run in a defrosting mode; In a case where it is determined that a condensing module in the heating device meets a preset defrosting condition, an initial running frequency of a compression module at present is determined, and the heating device is controlled to run in a defrosting mode; In a case where it is determined that the condensing module meets a preset stop defrosting condition, a final running frequency of the compression module at present is determined; According to the initial running frequency, the defrosting running frequency, and the final running frequency, an exit running frequency of the compression module when exiting the defrosting mode is determined, and the compression module is controlled to exit the defrosting mode at the exit running frequency.

2. The method of claim 1, wherein, The method comprises the following steps: A first compression correction coefficient of the compression module is determined, and a plurality of preset system correction coefficients are obtained; A first high-pressure pressure value and a first low-pressure pressure value of the compression module at present are obtained; According to the first compression correction coefficient, the plurality of system correction coefficients, the first high-pressure pressure value, and the first low-pressure pressure value, an initial running frequency of the compression module is determined.

3. The method of claim 2, wherein, The method comprises the following steps: The first compression correction coefficient, the plurality of system correction coefficients, the first high-pressure pressure value, and the first low-pressure pressure value are calculated through a first preset formula to obtain the initial running frequency of the compression module; wherein the first preset formula is as follows: Wherein, the F1 is the initial operation frequency, the A is the first compression correction coefficient, the X, the Y, and the Z are the system correction coefficients, the P h is the first high pressure value, the P l is the first low pressure value.

4. The method of claim 1, wherein, The method comprises the following steps: A time interval is obtained; According to the time interval, the defrosting running frequency of the compression module is determined at a time.

5. The method of claim 1, wherein, The method comprises the following steps: An ambient temperature of the condensing module before the heating device runs in the defrosting mode is obtained, and a second compression correction coefficient of the compression module is obtained; An inlet temperature of a heat exchange module in the heating device is collected; According to the second compression correction coefficient, the ambient temperature, and the inlet temperature, the defrosting running frequency of the compression module is determined.

6. The method of claim 5, wherein, The method comprises the following steps: The second compression correction coefficient, the ambient temperature, and the inlet temperature are calculated through a second preset formula to obtain the defrosting running frequency of the compression module, and the second preset formula is as follows: The F0 is the defrosting operation frequency, the B is the second compression correction coefficient, the T i is the inlet temperature, the T e is the ambient temperature.

7. The method of claim 2, wherein, The method comprises the following steps: A second high-pressure pressure value and a second low-pressure pressure value of the compression module at present are obtained; According to the first compression correction coefficient, the plurality of system correction coefficients, the second high-pressure pressure value, and the second low-pressure pressure value, a final running frequency of the compression module at present is determined.

8. The method of claim 1, wherein, In a case where it is determined that the condensation module in the heating device meets the preset defrosting condition, the method further comprises: determining 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; determining the exit operating frequency of the compression module when exiting the defrosting mode according to the initial operating frequency, the defrosting operating frequency, and the final operating frequency, comprises: comparing the final operating frequency with the initial operating frequency and the defrosting operating frequency respectively to obtain a comparison result, wherein the defrosting operating frequency is less than the initial operating frequency; determining the exit operating frequency of the compression module when exiting the defrosting mode according to the comparison result and the first temperature difference.

9. The method of claim 8, wherein, determining the exit operating frequency of the compression module when exiting the defrosting mode according to the comparison result and the first temperature difference, comprises: in a case where the comparison result represents 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 condensation module currently meets a preset stop defrosting condition; in a case where it is determined according to the second temperature difference and the first temperature difference that the heat exchange module currently meets a preset operating condition, and the comparison result represents that the final operating frequency is less than or equal to the initial operating frequency, determining the initial operating frequency as the exit operating frequency; in a case where it is determined according to the second temperature difference and the first temperature difference that the heat exchange module currently meets a preset operating condition, and the comparison result represents that the final operating frequency is greater than the initial operating frequency, determining the final operating frequency as the exit operating frequency.

10. The method of claim 9, wherein, determining that the heat exchange module currently meets a preset operating condition according to the second temperature difference and the first temperature difference, comprises: 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; in a case where it is determined that the equivalent temperature difference is less than or equal to the first temperature difference, determining that the heat exchange module currently meets a preset operating condition.

11. The method of claim 10, wherein, 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, comprises: obtaining a 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; multiplying the temperature difference coefficient, the ratio, and the first temperature difference to obtain the equivalent temperature difference corresponding to the second temperature difference.

12. The method of claim 10, wherein, The method further comprises: in a case where it is determined that the equivalent temperature difference is greater than the first temperature difference, controlling the compression module to stop operating, and controlling a preset auxiliary heat source module to heat the heat exchange medium entering the heat exchange module; redetermining a third temperature difference between an outlet temperature and an inlet temperature of the heat exchange medium in the heat exchange module; determining a new equivalent temperature difference corresponding to the third temperature difference; In a case that the new equivalent temperature difference is less than or equal to the first temperature difference, the control module controls the compression module to restart at the final operating frequency or the initial operating frequency.

13. The method of claim 8, wherein, The method further comprises: In a case that the comparison result indicates that the final operating frequency is less than or equal to the defrosting operating frequency, the defrosting operating frequency is determined as the exiting operating frequency.

14. A defrosting device for a heating apparatus, characterized by The device is applied to a heating device, and the device comprises: A first determining module is configured to determine an initial operating frequency of a compression module in a case that a condensing module in the heating device meets a preset defrosting condition, and control the heating device to operate in a defrosting mode; A second determining module is configured to determine a defrosting operating frequency of the compression module in a process that the heating device operates in the defrosting mode, and control the compression module to operate at the defrosting operating frequency; A third determining module is configured to determine a final operating frequency of the compression module in a case that the condensing module meets a preset stop defrosting condition; A fourth determining module is configured to determine an exiting operating frequency of the compression module when the compression module exits the defrosting mode according to the initial operating frequency, the defrosting operating frequency, and the final operating frequency, and control the compression module to exit the defrosting mode at the exiting operating frequency.

15. A heating device, characterized by The device comprises: A processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory complete mutual communication through the communication bus; the memory is used to store a computer program; and the processor is used to execute the computer program to implement the defrosting method of the heating device according to any one of claims 1-13.

16. A storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to implement the defrosting method of the heating device according to any one of claims 1-13.

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