Compressor heat mode load loading method and heat pump unit system

Abstract

The application provides a compressor heating mode load loading method and a heat pump unit system, and the method comprises the following steps: in the heating mode, the ambient temperature where the current compressor is located is obtained; it is judged whether the ambient temperature is greater than or equal to a first preset threshold value; and according to the judgment result, the compressor is controlled to operate in a first load loading mode or a second load loading mode. On the basis of the existing compressor loading scheme, the external environmental conditions and the energy efficiency change speed are comprehensively considered, the overall heating effect of the unit is improved, and the problem that the compressor is loaded too fast in a harsh environment, the outdoor unit is rapidly frosted, and the overall heating effect is reduced is solved. The application avoids the frosting of the outdoor unit when the ambient temperature is high, eliminates the influence of the frosting on the heating effect of the unit, reduces the frosting rate when the ambient temperature is low, and improves the overall heating effect of the unit.

Description

Technical Field

[0001] This invention relates to the field of compressor hot loading scheme design technology, specifically to a compressor hot mode load loading method and a heat pump unit system. Background Technology

[0002] Currently, heat pump units, in order to quickly reach the target indoor temperature during the heating process, directly load the compressor to the target load. For example, in existing technical solutions, the compressor load is adjusted according to a given coefficient by calculating the deviation between the compressor load and the target load. However, in harsh environments, excessively rapid compressor loading can cause the outdoor unit to generate a large amount of cooling capacity in a short period of time, significantly increasing the probability and extent of frosting on the outdoor unit, affecting subsequent heating performance, and ultimately resulting in a relatively low overall heating effect.

[0003] Therefore, the existing technology still needs further development. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a compressor heating mode load loading method and a heat pump unit system to solve the problem that in the prior art, under harsh environmental conditions, the compressor load is too fast, which will cause the outdoor unit to generate a large amount of cold energy in a short period of time, and the probability and degree of frost on the outdoor unit will be greatly increased, affecting the subsequent heating performance and ultimately resulting in a relatively low overall heating effect.

[0005] To achieve the above-mentioned technical objectives, according to a first aspect of the present invention, the present invention provides a method for hot-mode load loading of a compression mechanism, comprising:

[0006] In heating mode, obtain the ambient temperature where the compressor is currently located;

[0007] Determine whether the ambient temperature is greater than or equal to a first preset threshold;

[0008] Based on the judgment result, control the compressor to operate in either the first load loading mode or the second load loading mode.

[0009] Specifically, the method further includes:

[0010] If the ambient temperature is greater than or equal to the first preset threshold, the control module controls the execution module to output a control signal regarding the selection of the first loading mode for the compressor. The first loading mode is to load a preset percentage of the compressor load at preset time intervals. After each loading of the preset percentage of the compressor load, the defrosting temperature of the compressor and the outlet water temperature of the heat pump unit system corresponding to the compressor are obtained. It is determined whether the defrosting temperature is less than the second preset threshold, whether the outlet water temperature is greater than or equal to the sixth preset threshold, and whether the current compressor load is greater than or equal to the third preset threshold. Based on the determination results, the control module controls the execution module to output a control signal regarding whether to continue loading the compressor load.

[0011] Specifically, the method for calculating the compressor load includes:

[0012] Using ammeters and voltmeters installed in the compressor circuit, the current total current data and total voltage data of the compressor are obtained, and the current power data of the compressor is calculated based on the current total current data and total voltage data. The ratio of the current power data of the compressor to the rated power of the compressor is used as the current load of the compressor. The loading of the compressor load by a preset percentage at preset time intervals is achieved by adjusting the current total current data and total voltage data of the compressor.

[0013] Specifically, the method further includes:

[0014] The current ambient temperature of the compressor is obtained using a first temperature sensor located on the outer surface of the compressor;

[0015] The compressor outlet temperature is obtained using a second temperature sensor located at the compressor outlet and used as the defrosting temperature.

[0016] The outlet water temperature of the heat pump unit system is obtained by using a third temperature sensor installed at the outlet of the heat pump unit system corresponding to the compressor.

[0017] The inlet water temperature of the heat pump unit system is obtained by using a fourth temperature sensor installed at the inlet of the heat pump unit system corresponding to the compressor.

[0018] The flow rate data of the heat pump unit system is obtained using a flow meter installed in the heat pump unit system corresponding to the compressor.

[0019] Specifically, the method further includes:

[0020] If the defrosting temperature is less than the second preset threshold, or the outlet water temperature is greater than or equal to the sixth preset threshold, or the current load of the compressor is greater than or equal to the third preset threshold, the control module controls the execution module to output a control signal regarding stopping the loading of the compressor load, and the execution module stops loading the compressor load.

[0021] Specifically, the method further includes:

[0022] If the outlet water temperature is less than the sixth preset threshold, or the ambient temperature is less than the first preset threshold, the control module controls the execution module to output a control signal regarding the selection of the second loading mode. The second loading mode includes determining whether the current unit compressor load is greater than or equal to the fourth preset threshold, and outputting a control signal regarding whether to calculate a preset percentage modification coefficient and modify the preset percentage according to the modification coefficient based on the determination result. Then, the modified preset percentage compressor load is loaded according to the preset time interval until the current compressor load is greater than or equal to the third preset threshold.

[0023] Specifically, the second loading mode also includes:

[0024] If the current compressor load is determined to be less than the fourth preset threshold, the control module controls the execution module to output a control signal to directly load the compressor load to the fifth preset threshold, and the execution module directly loads the compressor load to the fifth preset threshold.

[0025] Specifically, the second loading mode also includes:

[0026] If the current compressor load is greater than or equal to the fourth preset threshold, calculate and record the current compressor load and current heating power data, and record the current heating power as the first heating power. After a preset time interval, calculate and record the current heating power again, and record it as the second heating power. Calculate the difference between the second heating power and the first heating power, and use it as the first difference data. Use the ratio of the first difference data to the preset time interval as the first energy efficiency decay rate. Calculate the difference between the preset energy efficiency decay rate threshold and the first energy efficiency decay rate, and use it as the second difference data. Calculate the ratio of the second difference data to the preset energy efficiency decay rate threshold, and use it as the modification coefficient of the preset percentage. Multiply the modification coefficient of the preset percentage by the preset percentage as the modified preset percentage.

[0027] Specifically, the method for calculating the heating power is as follows:

[0028] Calculate the difference between the outlet water temperature and the inlet water temperature, and use it as the third difference data. Calculate the product of the third difference data, the flow rate data, and the specific heat capacity of water. This product is the heating power.

[0029] According to a second aspect of the present invention, a heat pump unit system is provided, comprising:

[0030] The acquisition module is used to acquire the current ambient temperature of the compressor.

[0031] The control module is used to determine whether the ambient temperature is greater than or equal to a first preset threshold in heating mode; or to control the compressor to operate in a first load loading mode or a second load loading mode according to the determination result.

[0032] Beneficial effects:

[0033] This solution, based on the existing compressor loading scheme, comprehensively considers external environmental conditions and the rate of change in energy efficiency to improve the overall heating effect of the unit. It solves the problem that the rapid loading of the compressor in harsh environments leads to rapid frost formation on the outdoor unit, causing a decrease in the overall heating effect. This invention avoids frost formation on the outdoor unit when the ambient temperature is high, eliminating the impact of frost on the unit's heating effect, and reduces the frost formation rate when the ambient temperature is low, thereby improving the overall heating effect of the unit. Attached Figure Description

[0034] Figure 1 This is a flowchart of the hot mode load loading method for the compression mechanism provided in a specific embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the composition of a heat pump unit system provided in a specific embodiment of the present invention. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0037] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0038] Example 1

[0039] Please see Figure 1 This invention provides a method for hot-mode load loading of a compression mechanism, comprising:

[0040] S100, Heating Mode: Obtain the ambient temperature where the compressor is currently located.

[0041] It should be noted here that step S100 includes the following:

[0042] The preset thresholds are: first, second, third, fourth, fifth, and sixth, as well as the preset time interval, preset energy efficiency degradation rate threshold, preset time interval, preset percentage, and the compressor's rated power.

[0043] Specifically, the method further includes:

[0044] The current ambient temperature of the compressor is obtained using a first temperature sensor located on the outer surface of the compressor;

[0045] The compressor outlet temperature is obtained using a second temperature sensor located at the compressor outlet and used as the defrosting temperature.

[0046] The outlet water temperature of the heat pump unit system is obtained by using a third temperature sensor installed at the outlet of the heat pump unit system corresponding to the compressor.

[0047] The inlet water temperature of the heat pump unit system is obtained by using a fourth temperature sensor installed at the inlet of the heat pump unit system corresponding to the compressor.

[0048] The flow rate data of the heat pump unit system is obtained using a flow meter installed in the heat pump unit system corresponding to the compressor.

[0049] S200, Determine whether the ambient temperature is greater than or equal to a first preset threshold.

[0050] S300: Based on the judgment result, control the compressor to operate in either the first load loading mode or the second load loading mode.

[0051] Specifically, the method further includes:

[0052] If the ambient temperature is greater than or equal to the first preset threshold, the control module controls the execution module to output a control signal regarding the selection of the first loading mode for the compressor. The first loading mode is to load a preset percentage of the compressor load at preset time intervals. After each loading of the preset percentage of the compressor load, the defrosting temperature of the compressor and the outlet water temperature of the heat pump unit system corresponding to the compressor are obtained. It is determined whether the defrosting temperature is less than the second preset threshold, whether the outlet water temperature is greater than or equal to the sixth preset threshold, and whether the current compressor load is greater than or equal to the third preset threshold. Based on the determination results, the control module controls the execution module to output a control signal regarding whether to continue loading the compressor load.

[0053] It should be noted that if the ambient temperature is greater than or equal to the first preset threshold, preferably 1 degree Celsius, this invention indicates that the ambient temperature is high and there is no need to select the second loading mode. The second loading mode is the slow frosting loading mode, in which case the risk of the compressor causing frost is low. In this case, the first loading mode is selected, which is the frost-free loading mode. The first loading mode is the heat pump unit system loading the compressor in a stepped manner, that is, the first loading mode loads a preset percentage of the compressor load at preset time intervals. After the system stabilizes, the defrosting temperature of the compressor and the outlet water temperature of the heat pump unit system corresponding to the compressor are obtained. It is determined whether the defrosting temperature is less than the second preset threshold, whether the outlet water temperature is greater than or equal to the sixth preset threshold, and whether the current compressor load is greater than or equal to the third preset threshold. Based on the judgment result, the control execution module outputs a control signal regarding whether to continue loading the compressor load. If the defrosting temperature is less than the second preset threshold, preferably 0 degrees Celsius, it indicates that the outdoor unit is frosted and the load needs to be stopped. If the outlet water temperature is greater than or equal to the sixth preset threshold, it indicates that the compressor has completed heating and the load needs to be stopped. If the current load of the compressor is greater than or equal to the third preset threshold, preferably 100%, it indicates that the compressor load has reached its upper limit and the load needs to be stopped. If any of the above three situations occur, the control module controls the execution module to output a control signal to stop loading the compressor load, and the execution module stops loading the compressor load.

[0054] It is understood that, through the above-mentioned technical solution, this invention achieves the prevention of outdoor unit frosting when the ambient temperature is high, enabling the heat pump unit system to operate when the outdoor unit temperature is above 0 degrees Celsius. While meeting user needs, it avoids the heat pump unit system directly loading the compressor to its maximum load, which would generate a large amount of cold energy and cause the compressor temperature to drop below 0 degrees Celsius, resulting in frosting. This eliminates the impact of frosting on the unit's heating effect, solves the problem of rapid compressor loading in harsh environments leading to rapid frosting of the outdoor unit and a decrease in overall heating effect, improves the overall heating effect of the unit, greatly enhances the intelligence and reliability of this invention, significantly improves the user experience, and greatly expands the application scenarios of this invention.

[0055] Specifically, the method for calculating the compressor load includes:

[0056] Using ammeters and voltmeters installed in the compressor circuit, the current total current data and total voltage data of the compressor are obtained, and the current power data of the compressor is calculated based on the current total current data and total voltage data. The ratio of the current power data of the compressor to the rated power of the compressor is used as the current load of the compressor. The loading of the compressor load by a preset percentage at preset time intervals is achieved by adjusting the current total current data and total voltage data of the compressor.

[0057] Specifically, the method further includes:

[0058] If the defrosting temperature is less than the second preset threshold, or the outlet water temperature is greater than or equal to the sixth preset threshold, or the current load of the compressor is greater than or equal to the third preset threshold, the control module controls the execution module to output a control signal regarding stopping the loading of the compressor load, and the execution module stops loading the compressor load.

[0059] It should be noted that if the defrosting temperature is less than the second preset threshold, which is preferably 0 degrees Celsius, it indicates that the outdoor unit is frosted and the load should be stopped. If the outlet water temperature is greater than or equal to the sixth preset threshold, it indicates that the compressor has completed heating and the load should be stopped. If the current load of the compressor is greater than or equal to the third preset threshold, which is preferably 100%, it indicates that the compressor load has reached its limit and the load should be stopped. If any of the above three situations occur, the control module controls the execution module to output a control signal to stop loading the compressor load, and the execution module stops loading the compressor load.

[0060] Specifically, the method further includes:

[0061] If the outlet water temperature is less than the sixth preset threshold, or the ambient temperature is less than the first preset threshold, the control module controls the execution module to output a control signal regarding the selection of the second loading mode. The second loading mode includes determining whether the current unit compressor load is greater than or equal to the fourth preset threshold, and outputting a control signal regarding whether to calculate a preset percentage modification coefficient and modify the preset percentage according to the modification coefficient based on the determination result. Then, the modified preset percentage compressor load is loaded according to the preset time interval until the current compressor load is greater than or equal to the third preset threshold.

[0062] It should be noted that if the outlet water temperature is lower than the sixth preset threshold, it indicates that the frost-free loading mode cannot achieve the user's required outlet water temperature. In this case, the compressor's load loading rate is still relatively fast, and the frost caused by the fast load loading rate still has a significant impact on the heating effect of the heat pump unit. At this time, the preset percentage needs to be adjusted and reduced to solve the problem of the compressor loading too quickly in harsh environments, causing the outdoor unit to frost rapidly and resulting in a decrease in the overall heating effect. If the ambient temperature is lower than the first preset threshold, it indicates that the outside ambient temperature has decreased, and the air conditioner's outdoor unit may have already started to frost. In this case, it is necessary to reduce the frost rate or prevent the compressor from loading too quickly and causing the outdoor unit to frost rapidly, resulting in a decrease in the overall heating effect. The preset percentage needs to be adjusted and reduced to solve the problem of the compressor loading too quickly in harsh environments, causing the outdoor unit to frost rapidly and resulting in a decrease in the overall heating effect.

[0063] Specifically, the second loading mode also includes:

[0064] If the current compressor load is determined to be less than the fourth preset threshold, the control module controls the execution module to output a control signal to directly load the compressor load to the fifth preset threshold, and the execution module directly loads the compressor load to the fifth preset threshold.

[0065] It should be noted that if the current compressor load is less than the fourth preset threshold, the present invention preferably sets the fourth preset threshold to 50%. That is, if the current compressor load is less than 50%, the control module controls the execution module to output a control signal to directly load the compressor load to the fifth preset threshold. The execution module directly loads the compressor load to the fifth preset threshold. In other words, the execution module directly loads the compressor load to 50% in one loading operation. Through the above technical solution, the present invention can prevent the heat pump unit from reducing its energy efficiency due to too low a compressor load, effectively improve the energy efficiency of the heat pump unit, and further enhance the intelligence level of the present invention.

[0066] Specifically, the second loading mode also includes:

[0067] If the current compressor load is greater than or equal to the fourth preset threshold, calculate and record the current compressor load and current heating power data, and record the current heating power as the first heating power. After a preset time interval, calculate and record the current heating power again, and record it as the second heating power. Calculate the difference between the second heating power and the first heating power, and use it as the first difference data. Use the ratio of the first difference data to the preset time interval as the first energy efficiency decay rate. Calculate the difference between the preset energy efficiency decay rate threshold and the first energy efficiency decay rate, and use it as the second difference data. Calculate the ratio of the second difference data to the preset energy efficiency decay rate threshold, and use it as the modification coefficient of the preset percentage. Multiply the modification coefficient of the preset percentage by the preset percentage as the modified preset percentage.

[0068] It should be noted that the more severe the frosting, the smaller the difference between the outlet and inlet water temperatures, resulting in lower heating power and a higher first energy efficiency degradation rate. Furthermore, as frosting worsens, the difference between the preset energy efficiency degradation rate threshold and the first energy efficiency degradation rate decreases. This invention, through the above technical solution, modifies the preset percentage based on the first energy efficiency degradation rate, the preset energy efficiency degradation rate threshold, and the preset time. This achieves the following: the more severe the frosting, the higher the first energy efficiency degradation rate, and the larger the modification coefficient of the preset percentage. The smaller the modified preset percentage, the lower the load on the compressor of the heat pump unit system during the preset time interval, and the slower the loading speed, thereby reducing the frosting rate and degree.

[0069] Specifically, the method for calculating the heating power is as follows:

[0070] Calculate the difference between the outlet water temperature and the inlet water temperature, and use it as the third difference data. Calculate the product of the third difference data, the flow rate data, and the specific heat capacity of water. This product is the heating power.

[0071] It is understandable that, based on the existing compressor loading scheme, this invention comprehensively considers external environmental conditions and the rate of change in energy efficiency to improve the overall heating effect of the unit. It solves the problem that the rapid loading of the compressor in harsh environments leads to rapid frost formation on the outdoor unit, causing a decrease in the overall heating effect. This invention avoids frost formation on the outdoor unit when the ambient temperature is high, eliminating the impact of frost on the unit's heating effect, and reduces the frost formation rate when the ambient temperature is low, thereby improving the overall heating effect of the unit.

[0072] Example 2

[0073] Please continue reading. Figure 1 Embodiment 2 of the present invention employs the compression mechanism hot mode load loading method described in Embodiment 1. The difference between Embodiment 2 and Embodiment 1 is that:

[0074] The first preset threshold is preferably 5 degrees Celsius;

[0075] The preset percentage is preferably 10%;

[0076] The preset energy efficiency degradation rate threshold is preferably 10 KW / min;

[0077] The preset time interval is preferably 1 minute.

[0078] When the ambient temperature is measured to be 10 degrees Celsius, the heat pump unit system is loaded in a stepped manner, with each load being 10% of the load. The outlet water temperature is then measured after the heat pump unit system stabilizes.

[0079] The step of detecting the outlet water temperature after the heat pump unit system stabilizes includes: if the outlet water temperature does not reach the target water temperature, i.e., the outlet water temperature is less than the sixth preset threshold, then the load continues. If the unit is loaded 5 times, the load is 50%, the outlet water temperature reaches the target water temperature, i.e., the outlet water temperature is greater than or equal to the sixth preset threshold, and the defrosting temperature is greater than or equal to 0 degrees Celsius, then the load stops.

[0080] The step of detecting the outlet water temperature after the heat pump unit system stabilizes also includes: if the heat pump unit system is loaded 50% after 5 load cycles, but the outlet water temperature does not reach the target water temperature (i.e., the outlet water temperature is less than the sixth preset threshold), and the defrosting temperature is less than 0 degrees Celsius, then the system enters the second loading mode, i.e., the slow defrosting loading mode. The current load is recorded as 50%, assuming the current heating power is 200kW. After 1 minute, the heating power is re-recorded as 195kW. The first energy decay rate is calculated to be 5kW / min. Then the modification coefficient of the preset percentage is calculated to be (10-5) / 10 = 0.5, and the modified preset percentage is 0.5 * 10% = 5%. The compressor is controlled to load 5% of the compressor load every minute, and the above steps are repeated until the load reaches 100%.

[0081] When the measured ambient temperature is 4 degrees Celsius, since the ambient temperature is below the first preset threshold, the compressor load is increased to 50%, and the heat pump unit system operates stably. The current load is recorded as 50%, assuming the heating power is 200kW. After one minute, the heating power is re-recorded as 195kW. The first energy decay rate is calculated to be 5kW / min. The modification coefficient for the preset percentage is calculated to be (10-5) / 10 = 0.5, and the modified preset percentage is 0.5 * 10% = 5%. The compressor is controlled to load 5% of its load every minute, and the above steps are repeated until the load reaches 100%.

[0082] It is understandable that, based on the existing compressor loading scheme, this invention comprehensively considers external environmental conditions and the rate of change in energy efficiency to improve the overall heating effect of the unit. It solves the problem that the rapid loading of the compressor in harsh environments leads to rapid frost formation on the outdoor unit, causing a decrease in the overall heating effect. This invention avoids frost formation on the outdoor unit when the ambient temperature is high, eliminating the impact of frost on the unit's heating effect, and reduces the frost formation rate when the ambient temperature is low, thereby improving the overall heating effect of the unit.

[0083] Please see Figure 2 The present invention provides another embodiment, which provides a heat pump unit system, the heat pump unit system comprising:

[0084] The acquisition module 100 is used to acquire the current ambient temperature of the compressor;

[0085] The control module 200 is used to determine whether the ambient temperature is greater than or equal to a first preset threshold in heating mode; or to control the compressor 300 to operate in a first load loading mode or a second load loading mode according to the determination result.

[0086] It is understandable that, based on the existing compressor loading scheme, this invention comprehensively considers external environmental conditions and the rate of change in energy efficiency to improve the overall heating effect of the unit. It solves the problem that the rapid loading of the compressor in harsh environments leads to rapid frost formation on the outdoor unit, causing a decrease in the overall heating effect. This invention avoids frost formation on the outdoor unit when the ambient temperature is high, eliminating the impact of frost on the unit's heating effect, and reduces the frost formation rate when the ambient temperature is low, thereby improving the overall heating effect of the unit.

[0087] In a preferred embodiment, this application also provides an electronic device, the electronic device comprising:

[0088] The computer device includes a memory and a processor, wherein the memory stores computer-readable instructions that, when executed by the processor, implement the hot-mode load loading method of the compression mechanism. The computer device can be broadly categorized as a server, terminal, or any other electronic device with the necessary computing and / or processing capabilities. In one embodiment, the computer device may include a processor, memory, network interface, communication interface, etc., connected via a system bus. The processor of the computer device can be used to provide the necessary computing, processing, and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and internal memory. The non-volatile storage medium may store an operating system, computer programs, etc. The internal memory can provide an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface and communication interface of the computer device can be used to connect and communicate with external devices via a network. When the computer program is executed by the processor, it performs the steps of the method of the present invention.

[0089] This invention can be implemented as a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, causes the steps of the methods of embodiments of the invention to be performed. In one embodiment, the computer program is distributed across multiple network-coupled computer devices or processors, such that the computer program is stored, accessed, and executed in a distributed manner by one or more computer devices or processors. A single method step / operation, or two or more method steps / operations, may be executed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations may be executed by one or more computer devices or processors, and one or more other method steps / operations may be executed by one or more other computer devices or processors. One or more computer devices or processors may execute a single method step / operation, or execute two or more method steps / operations.

[0090] Those skilled in the art will understand that the method steps of this invention can be performed by a computer program instructing related hardware, such as a computer device or processor, to perform the steps of this invention when executed. Depending on the context, any references herein to memory, storage, databases, or other media may include non-volatile and / or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid-state drive, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0091] It is understandable that, based on the existing compressor loading scheme, this invention comprehensively considers external environmental conditions and the rate of change in energy efficiency to improve the overall heating effect of the unit. It solves the problem that the rapid loading of the compressor in harsh environments leads to rapid frost formation on the outdoor unit, causing a decrease in the overall heating effect. This invention avoids frost formation on the outdoor unit when the ambient temperature is high, eliminating the impact of frost on the unit's heating effect, and reduces the frost formation rate when the ambient temperature is low, thereby improving the overall heating effect of the unit.

[0092] The technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification, provided that such combination does not contain contradictions.

[0093] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for loading a thermal mode load on a compression mechanism, characterized in that, include: In heating mode, obtain the ambient temperature where the compressor is currently located; Determine whether the ambient temperature is greater than or equal to a first preset threshold; Based on the judgment result, control the compressor to operate in either the first load loading mode or the second load loading mode; The method further includes: If the ambient temperature is greater than or equal to the first preset threshold, the control module controls the execution module to output a control signal regarding the selection of the first loading mode for the compressor. The first loading mode is to load a preset percentage of the compressor load at preset time intervals. After each loading of the preset percentage of the compressor load, the defrosting temperature of the compressor and the outlet water temperature of the heat pump unit system corresponding to the compressor are obtained. It is determined whether the defrosting temperature is less than the second preset threshold, whether the outlet water temperature is greater than or equal to the sixth preset threshold, and whether the current compressor load is greater than or equal to the third preset threshold. Based on the determination results, the control module controls the execution module to output a control signal regarding whether to continue loading the compressor load.

2. The thermal mode load loading method for compression mechanism according to claim 1, characterized in that, The method for calculating the compressor load includes: Using ammeters and voltmeters installed in the compressor circuit, the current total current data and total voltage data of the compressor are obtained, and the current power data of the compressor is calculated based on the current total current data and total voltage data. The ratio of the current power data of the compressor to the rated power of the compressor is used as the current load of the compressor. The loading of the compressor load by a preset percentage at preset time intervals is achieved by adjusting the current total current data and total voltage data of the compressor.

3. The thermal mode load loading method for compression mechanism according to claim 1, characterized in that, The method further includes: The current ambient temperature of the compressor is obtained using a first temperature sensor located on the outer surface of the compressor; The compressor outlet temperature is obtained using a second temperature sensor located at the compressor outlet and used as the defrosting temperature. The outlet water temperature of the heat pump unit system is obtained by using a third temperature sensor installed at the outlet of the heat pump unit system corresponding to the compressor. The inlet water temperature of the heat pump unit system is obtained by using a fourth temperature sensor installed at the inlet of the heat pump unit system corresponding to the compressor. The flow rate data of the heat pump unit system is obtained using a flow meter installed in the heat pump unit system corresponding to the compressor.

4. The thermal mode load loading method for compression mechanism according to claim 3, characterized in that, The method further includes: If the defrosting temperature is less than the second preset threshold, or the outlet water temperature is greater than or equal to the sixth preset threshold, or the current load of the compressor is greater than or equal to the third preset threshold, the control module controls the execution module to output a control signal regarding stopping the loading of the compressor load, and the execution module stops loading the compressor load.

5. The thermal mode load loading method for compression mechanism according to claim 4, characterized in that, The method further includes: If the outlet water temperature is less than the sixth preset threshold, or the ambient temperature is less than the first preset threshold, the control module controls the execution module to output a control signal regarding the selection of the second loading mode. The second loading mode includes determining whether the current unit compressor load is greater than or equal to the fourth preset threshold, and outputting a control signal regarding whether to calculate a preset percentage modification coefficient and modify the preset percentage according to the modification coefficient based on the determination result. Then, the modified preset percentage compressor load is loaded according to the preset time interval until the current compressor load is greater than or equal to the third preset threshold.

6. The thermal mode load loading method for compression mechanism according to claim 5, characterized in that, The second loading mode also includes: If the current compressor load is determined to be less than the fourth preset threshold, the control module controls the execution module to output a control signal to directly load the compressor load to the fifth preset threshold, and the execution module directly loads the compressor load to the fifth preset threshold.

7. The thermal mode load loading method for a compression mechanism according to claim 5, characterized in that, The second loading mode also includes: If the current compressor load is greater than or equal to the fourth preset threshold, calculate and record the current compressor load and current heating power data, and record the current heating power as the first heating power. After a preset time interval, calculate and record the current heating power again, and record it as the second heating power. Calculate the difference between the second heating power and the first heating power, and use it as the first difference data. Use the ratio of the first difference data to the preset time interval as the first energy efficiency decay rate. Calculate the difference between the preset energy efficiency decay rate threshold and the first energy efficiency decay rate, and use it as the second difference data. Calculate the ratio of the second difference data to the preset energy efficiency decay rate threshold, and use it as the modification coefficient of the preset percentage. Multiply the modification coefficient of the preset percentage by the preset percentage as the modified preset percentage.

8. The compression mechanism hot mode load loading method according to claim 7, characterized in that, The method for calculating the heating power is as follows: Calculate the difference between the outlet water temperature and the inlet water temperature, and use it as the third difference data. Calculate the product of the third difference data, the flow rate data, and the specific heat capacity of water. This product is the heating power.

9. A heat pump unit system, characterized in that, The hot-mode load loading method for the compression mechanism according to any one of claims 1-8 includes: The acquisition module is used to acquire the current ambient temperature of the compressor. The control module is used to determine whether the ambient temperature is greater than or equal to a first preset threshold in heating mode; or to control the compressor to operate in a first load loading mode or a second load loading mode according to the determination result.

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