Methods, devices, media and products for torque compensation control of air conditioners and their compressors

Abstract

This invention provides an air conditioner and its compressor torque compensation control method, device, medium, and product. The method includes: acquiring the current operating condition of the compressor and the deformation rate of the compressor feet; determining a target operating compensation torque for torque compensation of the compressor based on the current operating condition of the compressor and the deformation rate of the compressor feet; and performing torque compensation on the compressor based on the determined target operating compensation torque. The solution provided by this invention can improve operational reliability through real-time control of torque compensation.

Description

Technical Field

[0001] This invention relates to the field of control, and more particularly to an air conditioner and its compressor torque compensation control method, apparatus, medium, and product. Specifically, it relates to an air conditioner and its compressor torque compensation control method, control apparatus, computer-readable storage medium, and computer program product. Background Technology

[0002] The parameters of torque compensation in a DC inverter single-rotor compressor for air conditioning have a significant impact on the compressor's performance and reliability. For example, increased torque compensation can improve compressor power and optimize compressor vibration, while decreased torque compensation can reduce it. In related technologies, the torque compensation control of air conditioning compressors is determined by designers during the development phase. However, as the compressor rotor breaks in, the pipeline ages, the pipeline counterweight vibrates and drifts over time, and the tightness of the sound insulation cotton changes, the compressor's vibration state will change. Under these circumstances, the original torque compensation design will not match the actual operating state of the compressor. Summary of the Invention

[0003] The main objective of this invention is to overcome the deficiencies of the aforementioned related technologies and provide an air conditioner and its compressor torque compensation control method, device, medium, and product to solve the problem that the vibration state of the compressor changes and the torque compensation is inconsistent with the actual operating state of the compressor in the related technologies.

[0004] The present invention provides a compressor torque compensation control method, comprising: acquiring the current operating condition of the compressor and the deformation rate of the compressor foot pads; determining a target operating compensation torque for torque compensation of the compressor based on the current operating condition of the compressor and the deformation rate of the compressor foot pads; and performing torque compensation on the compressor based on the determined target operating compensation torque.

[0005] Optionally, based on the current operating condition of the compressor and the deformation rate of the compressor feet, a target operating compensation torque for torque compensation of the compressor is determined, including: when the deformation rate of the compressor feet is less than a first deformation rate threshold, reducing the torque compensation of the compressor based on the set compensation torque; when the deformation rate of the compressor feet is greater than or equal to a first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, maintaining the set compensation torque unchanged; when the deformation rate of the compressor feet is greater than the second preset deformation rate threshold, increasing the torque compensation of the compressor based on the set compensation torque.

[0006] Optionally, when the deformation rate of the compressor foot pad is less than a first deformation rate threshold, the torque compensation of the compressor is reduced based on the set compensation torque, including: the target operating compensation torque of the compressor is equal to the set compensation torque minus the first compensation torque; when the deformation rate of the compressor foot pad is greater than or equal to a first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, the target operating compensation torque of the compressor remains unchanged at the set compensation torque; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation of the compressor is increased based on the set compensation torque, including: the target operating compensation torque of the compressor is equal to the set compensation torque plus the second compensation torque; wherein, the first compensation torque and / or the second compensation torque are determined according to the current operating conditions, and different first compensation torques and / or second compensation torques correspond to different operating conditions.

[0007] Optionally, the method further includes: when the deformation rate of the compressor foot pad is less than a first deformation rate threshold, increasing the compressor's acceleration / deceleration rate to a first preset rate; when the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, keeping the compressor's acceleration / deceleration rate unchanged; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, increasing the compressor's torque compensation based on the set compensation torque, and if the deformation rate of the compressor foot pad is still greater than the second preset deformation rate threshold, then continuing to increase the compressor's torque compensation and decreasing the compressor's acceleration / deceleration rate to the second preset rate.

[0008] Optionally, it further includes: after the compressor is torque compensated according to the determined target operating compensation torque, when the compressor runs continuously under the same operating condition for a period of time reaching a first preset duration, and the deformation rate of the compressor foot pad is less than or equal to a second preset deformation rate threshold, controlling the compressor to enter a preset control mode.

[0009] Optionally, the preset control mode includes: after entering the preset control mode for a first preset duration, acquiring the deformation rate of the compressor foot pad and the operating frequency of the compressor, respectively denoted as the first deformation rate and the first operating frequency; after entering the preset control mode for a second preset duration, acquiring the deformation rate of the compressor foot pad and the operating frequency of the compressor, respectively denoted as the second deformation rate and the second operating frequency; calculating the deformation rate difference between the second deformation rate and the first deformation rate, and the frequency difference between the second operating frequency and the first operating frequency; if the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the deformation rate difference between the second deformation rate and the first deformation rate is less than or equal to 0, then reducing the torque compensation of the compressor; if the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the deformation rate difference between the second deformation rate and the first deformation rate is greater than 0, then increasing the torque compensation of the compressor.

[0010] Optionally, it also includes: after increasing the torque compensation of the compressor, if the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, then exit the preset control mode.

[0011] Optionally, a sensor is provided at the bottom of the compressor to detect the deformation rate of the compressor foot pads.

[0012] Another aspect of the present invention provides a compressor torque compensation control device, comprising: an acquisition unit for acquiring the current operating condition of the compressor and the deformation rate of the compressor foot pads; a determination unit for determining a target operating compensation torque for torque compensation of the compressor based on the current operating condition of the compressor and the deformation rate of the compressor foot pads acquired by the acquisition unit; and a compensation unit for performing torque compensation on the compressor based on the target operating compensation torque determined by the determination unit.

[0013] Optionally, the determining unit determines a target operating compensation torque for torque compensation of the compressor based on the current operating condition of the compressor and the deformation rate of the compressor feet obtained by the acquiring unit, including: when the deformation rate of the compressor feet is less than a first deformation rate threshold, reducing the torque compensation of the compressor based on the set compensation torque; when the deformation rate of the compressor feet is greater than or equal to a first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, keeping the set compensation torque unchanged; when the deformation rate of the compressor feet is greater than the second preset deformation rate threshold, increasing the torque compensation of the compressor based on the set compensation torque.

[0014] Optionally, the determining unit determines the target operating compensation torque for torque compensation of the compressor based on the current operating condition of the compressor and the deformation rate of the compressor feet obtained by the acquiring unit. This further includes: when the deformation rate of the compressor feet is less than a first deformation rate threshold, reducing the torque compensation of the compressor based on the set compensation torque, including: the target operating compensation torque of the compressor equals the set compensation torque minus the first compensation torque; when the deformation rate of the compressor feet is greater than or equal to a first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, the target operating compensation torque of the compressor remains unchanged and equal to the set compensation torque; when the deformation rate of the compressor feet is greater than the second preset deformation rate threshold, increasing the torque compensation of the compressor based on the set compensation torque, including: the target operating compensation torque of the compressor equals the set compensation torque plus the second compensation torque; wherein the first compensation torque and / or the second compensation torque are determined according to the current operating condition, and different first compensation torques and / or second compensation torques correspond to different operating conditions.

[0015] Optionally, it further includes: an adjustment unit, configured to increase the compressor's acceleration / deceleration rate to a first preset rate when the deformation rate of the compressor foot pad is less than a first deformation rate threshold; when the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, the compressor's acceleration / deceleration rate remains unchanged; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, after increasing the compressor's torque compensation based on the set compensation torque, if the deformation rate of the compressor foot pad is still greater than the second preset deformation rate threshold, then continue to increase the compressor's torque compensation and decrease the compressor's acceleration / deceleration rate to the second preset rate.

[0016] Optionally, it further includes: a control unit, configured to control the compressor to enter a preset control mode after the compensation unit performs torque compensation on the compressor according to the determined target operating compensation torque, when the compressor runs continuously under the same operating condition for a period of time reaching a first preset duration, and the deformation rate of the compressor foot pad is less than or equal to a second preset deformation rate threshold.

[0017] Optionally, the preset control mode includes: after entering the preset control mode for a first preset duration, acquiring the deformation rate of the compressor foot pad and the operating frequency of the compressor, respectively denoted as the first deformation rate and the first operating frequency; after entering the preset control mode for a second preset duration, acquiring the deformation rate of the compressor foot pad and the operating frequency of the compressor, respectively denoted as the second deformation rate and the second operating frequency; calculating the deformation rate difference between the second deformation rate and the first deformation rate, and the frequency difference between the second operating frequency and the first operating frequency; if the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the deformation rate difference between the second deformation rate and the first deformation rate is less than or equal to 0, then reducing the torque compensation of the compressor; if the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the deformation rate difference between the second deformation rate and the first deformation rate is greater than 0, then increasing the torque compensation of the compressor.

[0018] Optionally, the control unit is further configured to: after increasing the torque compensation of the compressor, if the deformation rate of the compressor foot pad is greater than a second preset deformation rate threshold, then exit the preset control mode.

[0019] Optionally, a sensor is provided at the bottom of the compressor to detect the deformation rate of the compressor foot pads.

[0020] In another aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described above.

[0021] In another aspect, the present invention provides an air conditioner, including a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the methods described above.

[0022] In another aspect, the present invention provides an air conditioner including any of the compressor torque compensation control devices described above.

[0023] In another aspect, the present invention provides a computer program product, including a computer program that, when executed by a processor, implements the steps of any of the methods described above.

[0024] According to the technical solution of the present invention, the target operating compensation torque for torque compensation of the compressor is determined based on the current operating condition of the compressor and the deformation rate of the compressor foot pads. Torque compensation of the compressor enables the unit to monitor the vibration state of the compressor under different operating conditions and different operating frequencies, and to increase or decrease the torque compensation for different vibration states of the compressor. Real-time control of torque compensation can realize the long-term operation status monitoring and regulation of the pipeline, thereby improving operational reliability and energy saving effect.

[0025] According to the technical solution of the present invention, the operating strategy is adjusted according to the vibration state of the compressor during actual operation. When it is determined that the vibration state of the unit is worse than the previous state at the same frequency, the unit can increase compensation and readjust the vibration to a stable state. Conversely, it can self-adjust and reduce compensation to reduce power consumption in a stable state, thereby improving the operational stability and rationality of the unit.

[0026] According to the technical solution of the present invention, a single-rotor compressor requires deep torque compensation at low frequencies to ensure that speed fluctuations are within a stable range. Changes in the ambient temperature will cause changes in the compressor load. When the ambient temperature rises, the low-frequency vibration of the compressor deteriorates, increasing the demand for torque compensation, and vice versa. The present invention determines the target operating compensation torque for the compressor based on the current operating conditions of the compressor's ambient temperature and the deformation rate of the compressor feet. The unit can have a more optimized operating strategy in areas with large temperature ranges throughout the four seasons, improving the vibration stability of the air conditioner and extending its lifespan.

[0027] According to the technical solution of the present invention, based on the inverter logic, for example, under low load conditions in the outer loop or when the compressor is at a high frequency and stable speed, the unit does not need such deep compensation, which can reduce the compensation requirement, thereby reducing the power consumption of the compressor and improving the unit's energy efficiency throughout the year. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 This is a schematic diagram of an embodiment of the torque compensation control method for a compressor provided by the present invention;

[0030] Figure 2 A schematic diagram showing the detection of the deformation rate of the compressor feet is shown;

[0031] Figure 3 A schematic diagram of compressor foot deformation is shown;

[0032] Figure 4 This is a schematic diagram of another embodiment of the torque compensation control method for a compressor provided by the present invention;

[0033] Figure 5 The control flowchart of the preset control mode is shown;

[0034] Figure 6 The control flowchart of the preset control mode (energy-saving mode) is shown;

[0035] Figure 7This is a schematic diagram of the process for controlling the entry of energy-saving mode according to a specific embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of a specific embodiment of the compressor torque compensation control method provided by the present invention;

[0037] Figure 9 This is a structural block diagram of an embodiment of the compressor torque compensation control device provided by the present invention;

[0038] Figure 10 This is a structural block diagram of another embodiment of the compressor torque compensation control device provided by the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] Due to its structural design, the single-rotor compressor has a large load torque during operation, and different torque compensation is required from low frequency to high frequency. However, the vibration state of the compressor will change during long-term operation, and the vibration of the original frequency will worsen or improve. The unit cannot adjust the torque compensation control strategy according to the vibration of the actual operating frequency.

[0042] Single-rotor compressors require deep torque compensation at low frequencies to ensure that speed fluctuations remain within a stable range. Changes in ambient temperature can alter the compressor's load. When the ambient temperature rises, the compressor's low-frequency vibration worsens, increasing the demand for torque compensation. Conversely, when the ambient temperature falls, the demand decreases. In this case, the unit can have a more optimized operating strategy in regions with large temperature ranges throughout the four seasons, improving the air conditioner's vibration stability and extending its lifespan.

[0043] According to the inverter logic, after the unit runs to a stable frequency, the torque compensation is adjusted according to the actual operating vibration conditions. For example, under low load conditions in the outer loop or when the compressor is at a high frequency and stable speed, the unit does not need such a large torque compensation, which can reduce the compensation requirement, thereby reducing the power consumption of the compressor and improving the unit's annual seasonal energy efficiency.

[0044] This invention provides a torque compensation control method for compressors. This method is particularly suitable for variable frequency single-rotor compressors.

[0045] Figure 1 This is a schematic diagram of an embodiment of the torque compensation control method for a compressor provided by the present invention.

[0046] like Figure 1 As shown, according to an embodiment of the present invention, the torque compensation control method of the compressor includes at least steps S110, S120 and S130.

[0047] Step S110: Obtain the current operating condition of the compressor and the deformation rate of the compressor foot pads.

[0048] The specific operating conditions can be determined based on the outdoor ambient temperature. In one specific embodiment, the outdoor ambient temperature is divided into at least two temperature ranges, each corresponding to a specific operating condition. For example, the operating conditions include: a normal temperature operating condition, a low temperature operating condition, and a high temperature operating condition. The normal temperature operating condition is an outdoor ambient temperature greater than or equal to 16°C and less than or equal to 35°C; the low temperature operating condition is an outdoor ambient temperature less than 16°C; and the high temperature operating condition is an outdoor ambient temperature greater than 35°C. For another example, for a heat pump unit, the normal temperature operating condition is an outdoor ambient temperature greater than or equal to 5°C and an outer ring temperature less than or equal to 18°C; the low temperature operating condition is an outdoor ambient temperature less than 5°C; and the high temperature operating condition is an outdoor ambient temperature greater than 18°C.

[0049] The deformation rate of the compressor foot pad can specifically be the deformation rate of the compressor foot pad per unit time. In one specific embodiment, a sensor is provided at the bottom of the compressor to detect the deformation rate of the compressor foot pad. Figure 2 A schematic diagram illustrating the detection of the deformation rate of the compressor feet is shown. (For example...) Figure 2 As shown, a sensor 1 is installed at the bottom of the compressor cylinder 3 to detect the deformation of the compressor foot pads. The sensor is, for example, a displacement sensor.

[0050] In one specific embodiment, the deformation rate of the compressor foot pad, i.e., the rate of change of the longitudinal distance of the maximum outer diameter of the compressor foot pad per unit time, is equal to the ratio of the deformation value of the compressor foot pad per unit time (the change value of the longitudinal distance of the maximum outer diameter per unit time) to the longitudinal distance of the maximum outer diameter of the compressor foot pad. The deformation value of the compressor foot pad per unit time can be detected by a sensor. Figure 3 A schematic diagram of compressor foot deformation is shown. Figure 3 As shown, L is the longitudinal distance of the compressor foot pad's maximum outer diameter; ΔL is the deformation value of the compressor foot pad's maximum outer diameter per unit time. The deformation rate ε of the compressor foot pad per unit time can be calculated using the following formula:

[0051]

[0052] Step S120: Determine the target operating compensation torque for torque compensation of the compressor based on the current operating condition of the compressor and the deformation rate of the compressor foot pads.

[0053] Different compressor foot pad deformation rates under different operating conditions correspond to different compensation torques. Specifically, different compressor foot pad deformation rates correspond to different compressor vibration states. That is, based on the current operating condition and rotation state of the compressor, torque compensation is increased or decreased for different compressor vibration states under different operating conditions. In one specific embodiment, the compressor vibration states are divided into a first vibration state, a second vibration state, and a third vibration state. The deformation rate of the compressor foot pad corresponding to the first vibration state is less than that corresponding to the first vibration state; the deformation rate of the compressor foot pad corresponding to the second vibration state is less than that corresponding to the third vibration state. Specifically, a deformation rate less than a first preset deformation rate threshold (e.g., ε < 2.5%) is defined as a first vibration state, such as a good compressor vibration state; a deformation rate greater than or equal to the first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold (e.g., 2.5% ≤ ε ≤ 5%) is defined as a second vibration state, such as a stable compressor vibration state; and a deformation rate greater than the second preset deformation rate threshold (e.g., ε > 5%) is defined as a third vibration state, such as a poor compressor vibration state.

[0054] In one specific embodiment, under the same operating conditions, when the deformation rate of the compressor foot pad is less than a first deformation rate threshold, the torque compensation is reduced based on the set compensation torque; when the deformation rate of the compressor foot pad is greater than or equal to a first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, the torque compensation remains unchanged based on the set compensation torque; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation is increased based on the set compensation torque.

[0055] Specifically, when the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the torque compensation of the compressor is reduced based on the set compensation torque; when the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the torque compensation of the compressor remains unchanged based on the set compensation torque; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation of the compressor is increased based on the set compensation torque.

[0056] More specifically, when the deformation rate of the compressor foot pad is less than a first deformation rate threshold, the torque compensation of the compressor is reduced based on the set compensation torque, including: the target operating compensation torque of the compressor is equal to the set compensation torque minus the first compensation torque; when the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the target operating compensation torque of the compressor remains unchanged at the set compensation torque; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation of the compressor is increased based on the set compensation torque, including: the target operating compensation torque of the compressor is equal to the set compensation torque plus the second compensation torque; wherein, the first compensation torque and / or the second compensation torque are determined according to the current operating conditions, and different first compensation torques and / or second compensation torques correspond to different operating conditions.

[0057] Let T0 be the compressor's set compensation torque (which can be obtained in advance through experimental testing), and T be the compressor's target operating compensation torque. Under different operating conditions, the torque compensation is increased or decreased for different vibration states of the compressor (different deformation rates of the compressor foot pads), including the following situations:

[0058] (1) Under normal operating conditions, the torque compensation for different vibration states of the compressor (different deformation rates of the compressor foot pads) is increased or decreased, including:

[0059] When the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the target operating compensation torque is equal to the set compensation torque minus the first compensation torque; the first compensation torque is equal to the product of the set compensation torque multiplied by 1 and the difference in deformation rate of the compressor foot pad; that is, T = T0 - T0 * (1 - ε).

[0060] When the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the target operating compensation torque remains unchanged, that is, equal to the set compensation torque.

[0061] When the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the target operating compensation torque is equal to the set compensation torque plus the second compensation torque. The second compensation torque is equal to the product of the set compensation torque multiplied by 1 and the difference in deformation rate of the compressor foot pad; that is, T = T0 + T0*(1-ε).

[0062] (2) Under high-temperature operating conditions, torque compensation is increased or decreased for different vibration states of the compressor (different deformation rates of the compressor foot pads), including:

[0063] When the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the target operating compensation torque is equal to the set compensation torque minus the first compensation torque; the first compensation torque is equal to the product of the first preset coefficient k1 multiplied by the set compensation torque and then multiplied by 1 minus the difference in deformation rate; that is, T = T0 - k1 * T0 * (1 - ε), for example, k1 = 0.5, then T = T0 - 0.5 * T0 * (1 - ε).

[0064] When the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the target operating compensation torque remains unchanged, that is, equal to the set compensation torque.

[0065] When the deformation rate is greater than the second preset deformation rate threshold, the torque compensation is reduced based on the set compensation torque; the target operating compensation torque is equal to the set compensation torque plus the second compensation torque, and the second compensation torque is equal to the product of the second preset coefficient multiplied by the set compensation torque and then multiplied by 1 minus the difference in deformation rate; that is, T=T0+k2*T0*(1-ε), for example, k2=2, then T=T0+2*T0*(1-ε).

[0066] (3) Under low-temperature operating conditions, the torque compensation for different vibration states of the compressor (different deformation rates of the compressor feet) is increased or decreased, including:

[0067] When the deformation rate is less than the first deformation rate threshold, the target operating compensation torque is equal to the set compensation torque minus the first compensation torque; the first compensation torque is equal to the product of the third preset coefficient k3 multiplied by the set compensation torque and then multiplied by 1 minus the difference in deformation rate; that is, T = T0 - k3 * T0 * (1 - ε), for example, if k3 = 2, then T = T0 - 2 * T0 * (1 - ε).

[0068] When the deformation rate is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the target operating compensation torque remains unchanged, that is, equal to the set compensation torque.

[0069] When the deformation rate is greater than the second preset deformation rate threshold, the torque compensation is reduced based on the set compensation torque; the target operating compensation torque is equal to the set compensation torque plus the second compensation torque, and the second compensation torque is equal to the product of the fourth preset coefficient multiplied by the set compensation torque and then multiplied by 1 minus the difference in deformation rate; that is, T=T0+k4*T0*(1-ε), for example, k4=0.5, then T=T0+0.5*T0*(1-ε).

[0070] Step S130: Perform torque compensation on the compressor according to the determined target operating compensation torque.

[0071] That is, torque compensation is performed on the compressor according to the determined target operating compensation torque. Increasing or decreasing the torque compensation for different operating conditions and vibration states of the compressor, and through real-time control of the torque compensation, long-term pipeline operation status monitoring and regulation can be achieved, improving operational reliability and energy-saving effects.

[0072] Optionally, while reducing or increasing the torque of the compressor, the compressor's frequency conversion rate can also be adjusted.

[0073] Specifically, when the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the compressor's acceleration / deceleration rate is increased to the first preset rate; when the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the compressor's acceleration / deceleration rate remains unchanged; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, (based on the set compensation torque) the compressor's torque compensation is increased; if the deformation rate of the compressor foot pad is still greater than the second preset deformation rate threshold, the compressor's torque compensation is further increased, and the compressor's acceleration / deceleration rate is decreased to the second preset rate.

[0074] In one specific embodiment, the first preset rate is equal to twice the set frequency increase / decrease rate V; the second preset rate is equal to half the set frequency increase / decrease rate V. The set frequency increase / decrease rate V is a preset rate for frequency control based on the difference between the air conditioner's set temperature and the indoor ambient temperature. For example, the compressor frequency increases / decreases based on the difference between the remote control's set temperature and the indoor ambient temperature. During cooling, the frequency increases when the indoor ambient temperature is higher than the remote control's set temperature and decreases when the indoor ambient temperature is lower than or equal to the remote control's set temperature; during heating, the frequency increases when the indoor ambient temperature is lower than the remote control's set temperature and decreases when the indoor ambient temperature is higher than or equal to the remote control's set temperature.

[0075] For example, the first deformation rate threshold is 2.5%, and the second preset deformation rate threshold is 5%. When ε < 2.5%, the unit performs torque compensation to reduce and increase the compressor's frequency increase / decrease rate to 2V, achieving rapid cooling. In this case, the unit meets the room's cooling capacity in the shortest time and quickly reaches the highest frequency. When 2.5% ≤ ε ≤ 5%, the unit maintains the original torque compensation and continues to operate, with the compressor's frequency increase / decrease rate at V. When ε > 5%, the unit executes a torque compensation increase command and detects the real-time operating deformation rate ε. If ε > 5%, the torque compensation is further increased, and the compressor's frequency increase / decrease rate is reduced to V / 2.

[0076] Figure 4 This is a schematic diagram of another embodiment of the torque compensation control method for compressors provided by the present invention.

[0077] like Figure 4 As shown, according to another embodiment of the present invention, the torque compensation control method of the compressor further includes step S140.

[0078] Step S140: When the compressor runs continuously under the same operating conditions for a period of time that reaches a first preset duration, and the deformation rate of the compressor foot pad is less than or equal to a second preset deformation rate threshold, the compressor is controlled to enter a preset control mode.

[0079] The preset control mode can specifically be a preset energy-saving mode. Specifically, after the compressor is torque compensated according to the determined target operating compensation torque, when the compressor runs continuously under the same operating condition for a period of time that reaches a first preset duration, and the deformation rate of the compressor foot pads is less than or equal to a second preset deformation rate threshold, the compressor is controlled to enter the preset control mode.

[0080] Specifically, when the deformation rate of the compressor foot pad is less than or equal to the second preset deformation rate threshold, after torque compensation of the compressor, when the compressor runs continuously under the same operating condition for a period of time reaching the first preset duration, the compressor is controlled to enter a preset control mode; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, after torque compensation of the compressor, if the deformation rate of the compressor foot pad is less than or equal to the second preset deformation rate threshold and remains at the first preset duration, the compressor is controlled to enter a preset control mode.

[0081] For example, the first deformation rate threshold is 2.5%, and the second preset deformation rate threshold is 5%. When ε < 2.5%, torque compensation is reduced, and the compressor's frequency increase / decrease rate is increased to 2V to achieve rapid cooling. Under these conditions, the unit meets the room's cooling capacity in the shortest time and quickly reaches the highest frequency. When the operating conditions remain stable until the first preset duration, it enters energy-saving mode control. When 2.5% ≤ ε ≤ 5%, the original torque compensation is maintained until the first preset duration is met, and then energy-saving mode control is entered, with the compressor's frequency increase / decrease rate at V. When ε > 5%, torque compensation is increased, and the real-time deformation rate ε is detected. If ε ≤ 5% and the first preset duration is met, then energy-saving mode control is entered.

[0082] Figure 5 The control flowchart for the preset control mode is shown. For example... Figure 5 As shown, in one specific embodiment, the preset control mode includes the following control steps:

[0083] Step S1: After entering the preset control mode for a first preset time, obtain the deformation rate of the compressor foot pad and the operating frequency of the compressor, and record them as the first deformation rate and the first operating frequency, respectively.

[0084] Step S2: After entering the preset control mode for a second preset time, obtain the deformation rate of the compressor foot pad and the operating frequency of the compressor, and record them as the second deformation rate and the second operating frequency, respectively.

[0085] Step S3: Calculate the difference between the second deformation rate and the first deformation rate, and the frequency difference between the second operating frequency and the first operating frequency;

[0086] Step S4: If the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the difference between the deformation rate of the second deformation rate and the first deformation rate is less than or equal to 0, then reduce the torque compensation of the compressor.

[0087] Step S5: If the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the difference between the deformation rate of the second deformation rate and the first deformation rate is greater than 0, then the torque compensation of the compressor is increased.

[0088] Furthermore, after increasing the torque compensation of the compressor, if the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the preset control mode is exited.

[0089] In the above steps, reducing the torque compensation of the compressor, or reducing the torque compensation of the compressor, is the same as the specific implementation method of reducing the torque compensation of the compressor described above, and will not be repeated here.

[0090] According to the logic of common inverter models, under the same operating conditions, the frequency will reach a stable value when the running time is sufficient until the operating load changes or the user adjusts the fan speed, cooling or heating mode, etc.

[0091] Figure 6 The control flowchart for the preset control mode (energy-saving mode) is shown. Figure 6 As shown, when the unit operates under the same conditions and the running time reaches the first running time, if ε ≤ 5% (the second preset deformation rate threshold) at this time, the unit enters the energy-saving mode control. Taking the time point of entering the energy-saving mode as the starting point, ε1 and the operating frequency F1 are obtained; when the running time under the same conditions reaches the second preset time, ε2 and the operating frequency F2 are obtained, and the difference between F2 and F1 is calculated. If F2 = F1, it means that the frequency has reached a stable state. At the same time, if ε2 - ε1 ≤ 0, it means that the speed is stable and the deformation shows a decreasing trend. Torque compensation can be reduced. Conversely, torque compensation is increased.

[0092] To clearly illustrate the technical solution of the present invention, the execution flow of the compressor torque compensation control method provided by the present invention will be described below with a specific embodiment.

[0093] Figure 7 This is a schematic diagram illustrating the process of entering energy-saving mode control according to a specific embodiment of the present invention. Figure 7 As shown, when the compressor runs continuously for a certain period of time, it enters the main program control. Under the same operating conditions, when the running time reaches the first preset duration and the real-time deformation rate ε of the compressor feet satisfies ε≤5%, it enters the energy-saving mode control.

[0094] Figure 8 This is a schematic diagram of a specific embodiment of the compressor torque compensation control method provided by the present invention.

[0095] like Figure 8As shown, after entering the main program control, the unit first acquires the external operating conditions, which are divided into normal temperature, high temperature, and low temperature conditions. It detects the real-time operating deformation rate ε of the compressor feet. When ε < 2.5%, the unit executes torque compensation reduction and increases the compressor's frequency increase or decrease rate to 2V to achieve rapid cooling. Under these conditions, the unit meets the room's cooling capacity in the shortest time and quickly reaches the highest frequency. When the operating conditions remain stable for the first preset duration, the unit enters energy-saving mode control. When 2.5% ≤ ε ≤ 5%, the unit maintains the original torque compensation and continues to run until the first preset duration is met before entering energy-saving mode control, with the compressor's frequency increase / decrease rate at V. When ε > 5%, the unit executes a torque compensation increase command and detects the real-time operating deformation rate ε. If ε ≤ 5% and the first preset duration is met, it enters energy-saving mode control; otherwise, it continues to increase torque compensation and decrease the compressor's frequency increase / decrease rate to V / 2, then returns to the logic starting point.

[0096] The present invention also provides a torque compensation control device for a compressor. This device is particularly suitable for variable frequency single-rotor compressors.

[0097] Figure 9 This is a structural block diagram of an embodiment of the compressor torque compensation control device provided by the present invention. Figure 9 As shown, the compressor torque compensation control device 100 includes: an acquisition unit 110, a determination unit 120, and a compensation unit 130.

[0098] The acquisition unit 110 is used to acquire the current operating condition of the compressor and the deformation rate of the compressor foot pads.

[0099] The specific operating conditions can be determined based on the outdoor ambient temperature. In one specific embodiment, the outdoor ambient temperature is divided into at least two temperature ranges, each corresponding to a specific operating condition. For example, the operating conditions include: a normal temperature operating condition, a low temperature operating condition, and a high temperature operating condition. The normal temperature operating condition is an outdoor ambient temperature greater than or equal to 16°C and less than or equal to 35°C; the low temperature operating condition is an outdoor ambient temperature less than 16°C; and the high temperature operating condition is an outdoor ambient temperature greater than 35°C. For another example, for a heat pump unit, the normal temperature operating condition is an outdoor ambient temperature greater than or equal to 5°C and an outer ring temperature less than or equal to 18°C; the low temperature operating condition is an outdoor ambient temperature less than 5°C; and the high temperature operating condition is an outdoor ambient temperature greater than 18°C.

[0100] The deformation rate of the compressor foot pad can specifically be the deformation rate of the compressor foot pad per unit time. In one specific embodiment, a sensor is provided at the bottom of the compressor to detect the deformation rate of the compressor foot pad. Figure 2 A schematic diagram illustrating the detection of the deformation rate of the compressor feet is shown. (For example...) Figure 2 As shown, a sensor is installed at the bottom of the compressor cylinder 3 to detect the deformation of the compressor foot pads.

[0101] In one specific embodiment, the deformation rate of the compressor foot pad is equal to the ratio of the deformation value of the compressor foot pad per unit time (the change in the longitudinal distance of the maximum outer diameter) to the longitudinal distance of the maximum outer diameter of the compressor foot pad. The deformation value of the compressor foot pad per unit time can be detected by a sensor. Figure 3 A schematic diagram of compressor foot deformation is shown. Figure 3 As shown, L is the longitudinal distance of the compressor foot pad's maximum outer diameter; ΔL is the deformation value of the compressor foot pad's maximum outer diameter per unit time. The deformation rate ε of the compressor foot pad per unit time can be calculated using the following formula:

[0102]

[0103] The determining unit 120 is used to determine the target operating compensation torque for torque compensation of the compressor based on the current operating condition of the compressor and the deformation rate of the compressor foot pads obtained by the obtaining unit 110.

[0104] Different compressor foot pad deformation rates under different operating conditions correspond to different compensation torques. Specifically, different compressor foot pad deformation rates correspond to different compressor vibration states. That is, based on the current operating condition and rotation state of the compressor, torque compensation is increased or decreased for different compressor vibration states under different operating conditions. In one specific embodiment, the compressor vibration states are divided into a first vibration state, a second vibration state, and a third vibration state. The deformation rate of the compressor foot pad corresponding to the first vibration state is less than that corresponding to the first vibration state; the deformation rate of the compressor foot pad corresponding to the second vibration state is less than that corresponding to the third vibration state. Specifically, a deformation rate less than a first preset deformation rate threshold (e.g., ε < 2.5%) is defined as a first vibration state, such as a good compressor vibration state; a deformation rate greater than or equal to the first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold (e.g., 2.5% ≤ ε ≤ 5%) is defined as a second vibration state, such as a stable compressor vibration state; and a deformation rate greater than the second preset deformation rate threshold (e.g., ε > 5%) is defined as a third vibration state, such as a poor compressor vibration state.

[0105] In one specific embodiment, under the same operating conditions, when the deformation rate of the compressor foot pad is less than a first deformation rate threshold, the torque compensation of the compressor is reduced based on the set compensation torque; when the deformation rate of the compressor foot pad is greater than or equal to a first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, the torque compensation remains unchanged based on the set compensation torque; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation is increased based on the set compensation torque.

[0106] Specifically, the determining unit 120 determines the target operating compensation torque for torque compensation of the compressor based on the current operating condition of the compressor and the deformation rate of the compressor feet obtained by the acquiring unit, including: when the deformation rate of the compressor feet is less than a first deformation rate threshold, reducing the torque compensation of the compressor based on the set compensation torque; when the deformation rate of the compressor feet is greater than or equal to a first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, keeping the torque compensation of the compressor unchanged based on the set compensation torque; when the deformation rate of the compressor feet is greater than the second preset deformation rate threshold, increasing the torque compensation of the compressor based on the set compensation torque.

[0107] When the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the torque compensation of the compressor is reduced based on the set compensation torque; when the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the torque compensation of the compressor remains unchanged based on the set compensation torque; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation of the compressor is increased based on the set compensation torque.

[0108] More specifically, when the deformation rate of the compressor foot pad is less than a first deformation rate threshold, the torque compensation of the compressor is reduced based on the set compensation torque, including: the target operating compensation torque of the compressor is equal to the set compensation torque minus the first compensation torque; when the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the target operating compensation torque of the compressor remains unchanged at the set compensation torque; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation of the compressor is increased based on the set compensation torque, including: the target operating compensation torque of the compressor is equal to the set compensation torque plus the second compensation torque; wherein, the first compensation torque and / or the second compensation torque are determined according to the current operating conditions, and different first compensation torques and / or second compensation torques correspond to different operating conditions.

[0109] Let T0 be the compressor's set compensation torque (which can be obtained in advance through experimental testing), and T be the compressor's target operating compensation torque. Under different operating conditions, the torque compensation is increased or decreased for different vibration states of the compressor (different deformation rates of the compressor foot pads), including the following situations:

[0110] (1) Under normal operating conditions, the torque compensation for different vibration states of the compressor (different deformation rates of the compressor foot pads) is increased or decreased, including:

[0111] When the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the target operating compensation torque is equal to the set compensation torque minus the first compensation torque; the first compensation torque is equal to the product of the set compensation torque multiplied by 1 and the difference in deformation rate of the compressor foot pad; that is, T = T0 - T0 * (1 - ε).

[0112] When the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the target operating compensation torque remains unchanged, that is, equal to the set compensation torque.

[0113] When the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the target operating compensation torque is equal to the set compensation torque plus the second compensation torque. The second compensation torque is equal to the product of the set compensation torque multiplied by 1 and the difference in deformation rate of the compressor foot pad; that is, T = T0 + T0*(1-ε).

[0114] (2) Under high-temperature operating conditions, torque compensation is increased or decreased for different vibration states of the compressor (different deformation rates of the compressor foot pads), including:

[0115] When the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the target operating compensation torque is equal to the set compensation torque minus the first compensation torque; the first compensation torque is equal to the product of the first preset coefficient k1 multiplied by the set compensation torque and then multiplied by 1 minus the difference in deformation rate; that is, T = T0 - k1 * T0 * (1 - ε), for example, k1 = 0.5, then T = T0 - 0.5 * T0 * (1 - ε).

[0116] When the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the target operating compensation torque remains unchanged, that is, equal to the set compensation torque.

[0117] When the deformation rate is greater than the second preset deformation rate threshold, the torque compensation is reduced based on the set compensation torque; the target operating compensation torque is equal to the set compensation torque plus the second compensation torque, and the second compensation torque is equal to the product of the second preset coefficient multiplied by the set compensation torque and then multiplied by 1 minus the difference in deformation rate; that is, T=T0+k2*T0*(1-ε), for example, k2=2, then T=T0+2*T0*(1-ε).

[0118] (3) Under low-temperature operating conditions, the torque compensation for different vibration states of the compressor (different deformation rates of the compressor feet) is increased or decreased, including:

[0119] When the deformation rate is less than the first deformation rate threshold, the target operating compensation torque is equal to the set compensation torque minus the first compensation torque; the first compensation torque is equal to the product of the third preset coefficient k3 multiplied by the set compensation torque and then multiplied by 1 minus the difference in deformation rate; that is, T = T0 - k3 * T0 * (1 - ε), for example, if k3 = 2, then T = T0 - 2 * T0 * (1 - ε).

[0120] When the deformation rate is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the target operating compensation torque remains unchanged, that is, equal to the set compensation torque.

[0121] When the deformation rate is greater than the second preset deformation rate threshold, the torque compensation is reduced based on the set compensation torque; the target operating compensation torque is equal to the set compensation torque plus the second compensation torque, and the second compensation torque is equal to the product of the fourth preset coefficient multiplied by the set compensation torque and then multiplied by 1 minus the difference in deformation rate; that is, T=T0+k4*T0*(1-ε), for example, k4=0.5, then T=T0+0.5*T0*(1-ε).

[0122] The compensation unit 130 is used to perform torque compensation on the compressor based on the target operating compensation torque determined by the determining unit 120.

[0123] That is, torque compensation is performed on the compressor according to the determined target operating compensation torque. Increasing or decreasing the torque compensation for different operating conditions and vibration states of the compressor, and through real-time control of the torque compensation, long-term pipeline operation status monitoring and regulation can be achieved, improving operational reliability and energy-saving effects.

[0124] Optionally, while reducing or increasing the torque compensation of the compressor, the compressor's acceleration / deceleration rate can also be adjusted. The device 100 may further include: an adjustment unit (not shown), used to increase the compressor's acceleration / deceleration rate to a first preset rate when the deformation rate of the compressor feet is less than a first deformation rate threshold; when the deformation rate of the compressor feet is greater than or equal to the first preset deformation rate threshold and less than or equal to a second preset deformation rate threshold, the compressor's acceleration / deceleration rate remains unchanged; when the deformation rate of the compressor feet is greater than the second preset deformation rate threshold, after increasing the compressor's torque compensation (based on the set compensation torque), if the deformation rate of the compressor feet is still greater than the second preset deformation rate threshold, then the compressor's torque compensation is further increased, and the compressor's acceleration / deceleration rate is decreased to the second preset rate. In one specific embodiment, the first preset rate is equal to twice the set acceleration / deceleration rate V; the second preset rate is equal to half the set acceleration / deceleration rate V. The set frequency increase / decrease rate V is a preset frequency increase / decrease rate that controls the frequency increase / decrease based on the difference between the air conditioner's set temperature and the indoor ambient temperature. For example, the compressor frequency increases / decreases based on the difference between the remote control's set temperature and the indoor ambient temperature. When cooling, the frequency increases when the indoor ambient temperature is higher than the remote control's set temperature, and decreases when the indoor ambient temperature is lower than or equal to the remote control's set temperature. When heating, the frequency increases when the indoor ambient temperature is lower than the remote control's set temperature, and decreases when the indoor ambient temperature is higher than or equal to the remote control's set temperature.

[0125] For example, the first deformation rate threshold is 2.5%, and the second preset deformation rate threshold is 5%. When ε < 2.5%, the unit performs torque compensation to reduce and increase the compressor's frequency increase / decrease rate to 2V, achieving rapid cooling. In this case, the unit meets the room's cooling capacity in the shortest time and quickly reaches the highest frequency. When 2.5% ≤ ε ≤ 5%, the unit maintains the original torque compensation and continues to operate, with the compressor's frequency increase / decrease rate at V. When ε > 5%, the unit executes a torque compensation increase command and detects the real-time operating deformation rate ε. If ε > 5%, the torque compensation is further increased, and the compressor's frequency increase / decrease rate is reduced to V / 2.

[0126] Figure 10 This is a structural block diagram of another embodiment of the compressor torque compensation control device provided by the present invention. Figure 10 As shown, according to another embodiment of the present invention, the compressor torque compensation control device 100 further includes a control unit 140.

[0127] The control unit 140 is configured to control the compressor to enter a preset control mode after the compensation unit 130 performs torque compensation on the compressor according to the determined target operating compensation torque, when the compressor runs continuously under the same operating condition for a period of time that reaches a first preset duration and the deformation rate of the compressor foot pad is less than or equal to a second preset deformation rate threshold.

[0128] Specifically, after the compressor is torque compensated according to the determined target operating compensation torque, when the compressor runs continuously under the same operating condition for a period of time that reaches a first preset duration, and the deformation rate of the compressor foot pad is less than or equal to a second preset deformation rate threshold, the compressor is controlled to enter a preset control mode.

[0129] Specifically, when the deformation rate of the compressor foot pad is less than or equal to the second preset deformation rate threshold, after torque compensation of the compressor, when the compressor runs continuously under the same operating condition for a period of time reaching the first preset duration, the compressor is controlled to enter a preset control mode; when the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, after torque compensation of the compressor, if the deformation rate of the compressor foot pad is less than or equal to the second preset deformation rate threshold and remains at the first preset duration, the compressor is controlled to enter a preset control mode.

[0130] For example, the first deformation rate threshold is 2.5%, and the second preset deformation rate threshold is 5%. When ε < 2.5%, torque compensation is reduced, and the compressor's frequency increase / decrease rate is increased to 2V to achieve rapid cooling. Under these conditions, the unit meets the room's cooling capacity in the shortest time and quickly reaches the highest frequency. When the operating conditions remain stable until the first preset duration, it enters energy-saving mode control. When 2.5% ≤ ε ≤ 5%, the original torque compensation is maintained until the first preset duration is met, and then energy-saving mode control is entered, with the compressor's frequency increase / decrease rate at V. When ε > 5%, torque compensation is increased, and the real-time deformation rate ε is detected. If ε ≤ 5% and the first preset duration is met, then energy-saving mode control is entered.

[0131] Figure 5 The control flowchart for the preset control mode is shown. For example... Figure 5 As shown, in one specific embodiment, the preset control mode includes the following control steps:

[0132] Step S1: After entering the preset control mode for a first preset time, obtain the deformation rate of the compressor foot pad and the operating frequency of the compressor, and record them as the first deformation rate and the first operating frequency, respectively.

[0133] Step S2: After entering the preset control mode for a second preset time, obtain the deformation rate of the compressor foot pad and the operating frequency of the compressor, and record them as the second deformation rate and the second operating frequency, respectively.

[0134] Step S3: Calculate the difference between the second deformation rate and the first deformation rate, and the frequency difference between the second operating frequency and the first operating frequency;

[0135] Step S4: If the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the difference between the deformation rate of the second deformation rate and the first deformation rate is less than or equal to 0, then reduce the torque compensation of the compressor.

[0136] Step S5: If the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the difference between the deformation rate of the second deformation rate and the first deformation rate is greater than 0, then the torque compensation of the compressor is increased.

[0137] Furthermore, the control unit 140 is also configured to: after increasing the torque compensation of the compressor, if the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, then exit the preset control mode.

[0138] In the above steps, reducing the torque compensation of the compressor, or reducing the torque compensation of the compressor, is the same as the specific implementation method of reducing the torque compensation of the compressor described above, and will not be repeated here.

[0139] According to the logic of common inverter models, under the same operating conditions, the frequency will reach a stable value when the running time is sufficient until the operating load changes or the user adjusts the fan speed, cooling or heating mode, etc.

[0140] The present invention also provides a computer-readable storage medium corresponding to the compressor torque compensation control method, having stored thereon a computer program that, when executed by a processor, implements the steps of any of the aforementioned methods.

[0141] The present invention also provides an air conditioner corresponding to the compressor torque compensation control method, including a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the computer program to implement the steps of any of the aforementioned methods.

[0142] The present invention also provides an air conditioner corresponding to the compressor torque compensation control device, including any of the aforementioned compressor torque compensation control devices.

[0143] The present invention also provides a computer program product corresponding to the compressor torque compensation control method, including a computer program that, when executed by a processor, implements the steps of any of the aforementioned methods.

[0144] Accordingly, the solution provided by the present invention enables the unit to monitor the vibration state of the compressor under different operating conditions and different operating frequencies, and to increase or decrease the torque compensation for different vibration states of the compressor. Through real-time control of torque compensation, the long-term operation status monitoring and regulation of the pipeline can be realized, thereby improving operational reliability and energy saving effect.

[0145] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units can be integrated into a single processing unit, or each unit can exist physically separately, or two or more units can be integrated into a single unit.

[0146] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0147] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0148] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0149] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A compressor torque compensation control method, characterized in that, include: Obtain the current operating condition of the compressor and the deformation rate of the compressor feet; Based on the current operating conditions of the compressor and the deformation rate of the compressor feet, determine the target operating compensation torque for torque compensation of the compressor; Based on the determined target operating compensation torque, torque compensation is performed on the compressor; When the compressor runs continuously under the same operating conditions for a period of time that reaches a first preset duration, and the deformation rate of the compressor foot pads is less than or equal to a second preset deformation rate threshold, the compressor is controlled to enter a preset control mode. The preset control modes include: After entering the preset control mode for a first preset time, the deformation rate of the compressor foot pad and the operating frequency of the compressor are obtained and recorded as the first deformation rate and the first operating frequency, respectively. After entering the preset control mode for a second preset time, the deformation rate of the compressor foot pad and the operating frequency of the compressor are obtained and recorded as the second deformation rate and the second operating frequency, respectively. Calculate the difference between the second deformation rate and the first deformation rate, and the difference between the second operating frequency and the first operating frequency; If the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the difference between the deformation rate of the second deformation rate and the deformation rate of the first deformation rate is less than or equal to 0, then the torque compensation of the compressor is reduced. If the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the difference between the deformation rate of the second deformation rate and the deformation rate of the first deformation rate is greater than 0, then the torque compensation of the compressor is increased.

2. The method according to claim 1, characterized in that, Based on the current operating conditions of the compressor and the deformation rate of the compressor feet, the target operating compensation torque for torque compensation of the compressor is determined, including: When the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the torque compensation of the compressor is reduced based on the set compensation torque. When the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the torque compensation of the compressor remains unchanged at the set compensation torque. When the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation of the compressor is increased based on the set compensation torque.

3. The method according to claim 2, characterized in that, When the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the torque compensation of the compressor is reduced based on the set compensation torque, including: the target operating compensation torque of the compressor is equal to the set compensation torque minus the first compensation torque; When the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the target operating compensation torque of the compressor is equal to the set compensation torque and remains unchanged. When the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation of the compressor is increased based on the set compensation torque, including: the target operating compensation torque of the compressor is equal to the set compensation torque plus the second compensation torque; The first compensation torque and / or the second compensation torque are determined according to the current operating conditions, and different first compensation torques and / or second compensation torques correspond to different operating conditions.

4. The method according to claim 2, characterized in that, Also includes: When the deformation rate of the compressor foot pad is less than the first deformation rate threshold, the compressor's acceleration / deceleration rate is increased to the first preset rate; When the deformation rate of the compressor foot pad is greater than or equal to the first preset deformation rate threshold and less than or equal to the second preset deformation rate threshold, the compressor's acceleration and deceleration rate remains unchanged. When the deformation rate of the compressor foot pad is greater than the second preset deformation rate threshold, the torque compensation of the compressor is increased based on the set compensation torque. If the deformation rate of the compressor foot pad is still greater than the second preset deformation rate threshold, the torque compensation of the compressor is further increased, and the acceleration / deceleration rate of the compressor is reduced to the second preset rate.

5. The method according to claim 1, characterized in that, Also includes: After adding torque compensation to the compressor, if the deformation rate of the compressor foot pads is greater than the second preset deformation rate threshold, the preset control mode will be exited.

6. The method according to any one of claims 1-5, characterized in that, The compressor is equipped with a sensor at its bottom, which detects the deformation rate of the compressor foot pads.

7. A compressor torque compensation control device, characterized in that, include: The acquisition unit is used to acquire the current operating condition of the compressor and the deformation rate of the compressor foot pads; The determining unit is used to determine the target operating compensation torque for torque compensation of the compressor based on the current operating condition of the compressor and the deformation rate of the compressor foot pads obtained by the acquiring unit. The compensation unit is used to perform torque compensation on the compressor based on the target operating compensation torque determined by the determining unit. The control unit is configured to control the compressor to enter a preset control mode after the compensation unit performs torque compensation on the compressor according to the determined target operating compensation torque, when the compressor runs continuously under the same operating condition for a period of time that reaches a first preset duration and the deformation rate of the compressor foot pad is less than or equal to a second preset deformation rate threshold. The preset control mode includes: after entering the preset control mode for a first preset duration, acquiring the deformation rate of the compressor foot pad and the operating frequency of the compressor, respectively denoted as the first deformation rate and the first operating frequency; after entering the preset control mode for a second preset duration, acquiring the deformation rate of the compressor foot pad and the operating frequency of the compressor, respectively denoted as the second deformation rate and the second operating frequency; calculating the deformation rate difference between the second deformation rate and the first deformation rate, and the frequency difference between the second operating frequency and the first operating frequency; if the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the deformation rate difference between the second deformation rate and the first deformation rate is less than or equal to 0, then reducing the torque compensation of the compressor; if the frequency difference between the second operating frequency and the first operating frequency is equal to 0, and the deformation rate difference between the second deformation rate and the first deformation rate is greater than 0, then increasing the torque compensation of the compressor.

8. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1-6.

9. An air conditioner, characterized in that, It includes a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the methods of claims 1-6, or includes the compressor torque compensation control device as described in claim 7.

10. A computer program product, characterized in that, Includes a computer program, which, when executed by a processor, implements the steps of the method according to any one of claims 1-6.

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