Air conditioner energy-saving control method, energy-saving control device and air conditioner

Abstract

An air conditioner energy-saving control method includes: setting an energy-saving operating gear and an energy-saving weight; calculating a theoretical total power corresponding to an operating condition based on the average power per unit operating frequency of the compressor, the maximum allowable operating frequency of the compressor, a portion of the total power, and an operating condition power compensation power; calculating an energy-saving calibration power based on the energy-saving weight, the theoretical total power, and the selected energy-saving weight; calculating an energy-saving operating frequency corresponding to the operating condition and the energy-saving operating gear based on the energy-saving calibration power, and controlling the compressor to operate at the energy-saving operating frequency; and also disclosing an air conditioner energy-saving control device and an air conditioner. The present invention fully considers the user's energy-saving needs and can adjust the energy-saving target based on the user's energy-saving needs. It also fully incorporates the required operating conditions of the air conditioner operating condition, achieving both flexibility and stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning, and in particular relates to an air conditioner energy-saving control method, an air conditioner energy-saving control device, and an air conditioner. Background Art

[0002] Air conditioning is a control system that controls temperature, humidity, air cleanliness, and air circulation. Most systems utilize the evaporation or condensation of refrigerant under the action of a compressor, which then exchanges heat with the surrounding air to change the temperature and humidity within the air-conditioned room. Common inverter air conditioners control refrigerant flow by varying compressor speed and the opening of the electronic expansion valve. Under certain operating conditions, cooling capacity is proportional to refrigerant flow, while refrigerant mass flow is proportional to compressor speed. Therefore, cooling capacity can be adjusted by adjusting the compressor speed. Refrigerant mass flow refers to the cooling capacity per unit mass of refrigerant. As the most important working component in an air conditioning system, the operating condition of the compressor directly affects the overall power consumption of the air conditioner.

[0003] The prior art discloses a variety of control methods for limiting the overall power consumption of a compressor. For example, Chinese patent application (CN113446670A) discloses a method for controlling the operating frequency of a compressor, which specifically includes: "setting a base target temperature and multiple target temperature deviations from the base target temperature for an air-conditioning system, and forming multiple target temperature intervals based on the base target temperature and the multiple target temperature deviations; determining a target operating frequency corresponding to the base target temperature, and setting a set operating frequency corresponding to each target temperature interval that is a predetermined value lower than the target operating frequency; measuring the real-time operating temperature and selecting the target temperature interval within which the real-time operating temperature falls; driving the compressor at the set operating frequency corresponding to the selected target temperature interval for a first predetermined period of time, and re-implementing the step of measuring the real-time operating temperature after the first predetermined period of time." Although this control method can reduce the overall power consumption of the compressor, the target temperature interval, set operating frequency, and first predetermined period of time are fixed throughout the entire control process. User participation in the control process is low, and adjustments cannot be made according to actual needs, which may sacrifice user comfort to a certain extent.

[0004] A Chinese patent application (CN107906700A) discloses an air conditioner, a control method thereof, a control device and a computer-readable storage medium, and specifically discloses: "The air conditioner control method includes the following steps: detecting the current indoor ambient temperature value and the outdoor ambient temperature value, determining the temperature range in which the outdoor ambient temperature value is located, and determining the energy-saving frequency of the air conditioner according to the temperature range and the indoor ambient temperature value." This control method controls the compressor to operate at a higher operating frequency to ensure the heat exchange effect of the air conditioner when the outdoor ambient temperature is high and the temperature difference with the indoor user's comfortable temperature is large, and further generates the energy-saving frequency of the compressor on this basis. In the same control process, users cannot participate, and the flexibility is low. Summary of the Invention

[0005] The present invention designs and proposes an air conditioner energy-saving control method to address the problem that the air conditioner control method configured to limit the power consumption of the compressor in the prior art has low user participation during the control process and cannot be adjusted according to actual needs.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] An air conditioner energy-saving control method, characterized by comprising the following steps:

[0008] Set multiple energy-saving operation gears and set the energy-saving weight corresponding to each energy-saving operation gear n ,n is the energy-saving operation gear number;

[0009] Based on the average power k of the compressor per unit operating frequency, the maximum allowable operating frequency f of the compressor corresponding to the operating condition max , the total power corresponding to the operating conditions W b , Working condition power compensation power W corresponding to the operating condition c Calculate the theoretical total power W0 corresponding to the operating conditions, where

[0010] W0=k×f max +W b +W c

[0011] Select the corresponding energy-saving weight e according to the set energy-saving operation gear n , based on the theoretical total power W0 corresponding to the operating conditions and the selected energy-saving weight e n Calculate the energy-saving calibration power W x , where W x =W0×e n ;

[0012] Calibrate power W according to energy saving xCalculate the energy-saving operation frequency f(x) corresponding to the operating condition and energy-saving operation gear, where

[0013] The compressor is controlled to operate at the energy-saving operating frequency f(x).

[0014] Furthermore, part of the total power W b Tested by the following steps:

[0015] Set the operating conditions of the air conditioner;

[0016] Connect the power supply, set the target operating frequency of the compressor to 0Hz, control the outdoor fan to start, and set the total power of the air conditioner measured at this time as part of the total power W b and store.

[0017] Furthermore, the working power compensation power W c Tested by the following steps:

[0018] Determine the operating conditions of the air conditioner;

[0019] Set the target operating frequency of the compressor to the maximum allowable operating frequency f max , operate the compressor at the maximum allowable operating frequency f max The total power of the air conditioner measured at the time is set to the first calibration power W1;

[0020] Based on the average power k of the compressor per unit operating frequency, the maximum allowable operating frequency f of the compressor corresponding to the operating condition max , the total power corresponding to the operating conditions W b Calculate the second calibration power W2, W2 = k × f max +W n ;

[0021] Calculate the working condition power compensation power W corresponding to the operating condition c And store the working condition power compensation power W c =W1-W2.

[0022] Furthermore, the maximum allowable operating frequency f of the compressor corresponding to the operating condition is max Including the maximum allowable operating frequency f of the compressor corresponding to multiple temperature ranges max_N , N is the ordinal number of the temperature interval, which is generated based on the temperature difference relative to the set target temperature.

[0023] Furthermore, the multiple energy-saving operating gears correspond to multiple energy-saving target values, and the energy-saving weight e n Negatively correlated with the energy-saving target value.

[0024] A second aspect of the present invention provides an air conditioner energy-saving control device, comprising:

[0025] A setting module is configured to set a plurality of energy-saving operation gears and set an energy-saving weight corresponding to each energy-saving operation gear. n ,n is the energy-saving operation gear number;

[0026] Theoretical total power calculation module, the theoretical total power calculation module is configured based on the average power k of the compressor unit operating frequency, the maximum allowable operating frequency f of the compressor corresponding to the operating condition max , the total power corresponding to the operating conditions W b , Working condition power compensation power W corresponding to the operating condition c Calculate the theoretical total power W0 corresponding to the operating conditions, where W0 = k × f max +W b +W c ;

[0027] Energy-saving calibration power calculation module, the energy-saving calibration power calculation module is configured to select the corresponding energy-saving weight e according to the set energy-saving operation gear n , based on the theoretical total power W0 corresponding to the operating conditions and the selected energy-saving weight e n Calculate the energy-saving calibration power W x , where W x =W0×e n ;

[0028] Energy-saving operation frequency calculation module, the energy-saving operation frequency calculation module is configured to calculate the energy-saving calibration power W x Calculate the energy-saving operation frequency f(x) corresponding to the operating condition and energy-saving operation gear, where and

[0029] A control module is configured to control the compressor to operate according to an energy-saving operating frequency f(x).

[0030] Furthermore, a partial total power test module is provided, wherein the partial total power test module includes:

[0031] a setting unit configured to set an operating condition of the air conditioner;

[0032] an outdoor fan control unit configured to control the outdoor fan to start when the power is connected and the target operating frequency of the compressor is set to 0 Hz; and

[0033] The measuring unit is configured to set the total power of the air conditioner measured when the outdoor fan is started as part of the total power W b and store.

[0034] Furthermore, a working condition power compensation power test module is provided, wherein the working condition power compensation power test module includes:

[0035] a setting unit configured to set an operating condition of the air conditioner;

[0036] The first calibration power measuring unit is configured to set the target operating frequency of the compressor to the maximum allowable operating frequency f max , operate the compressor at the maximum allowable operating frequency f max The total power of the air conditioner measured at the time is set to the first calibration power W1;

[0037] The second calibration power generation unit is configured to generate a second calibration power based on the average power k of the compressor unit operating frequency and the maximum allowable operating frequency f of the compressor corresponding to the operating condition. max , the total power corresponding to the operating conditions W b Calculate the second calibration power W2, W2 = k × f max +W b ;and

[0038] The working condition power compensation power calculation unit is configured to calculate the working condition power compensation power W corresponding to the operating condition c And store, working condition power compensation power W c =W1-W2.

[0039] Furthermore, the maximum allowable operating frequency f of the compressor corresponding to the operating condition is max Including the maximum allowable operating frequency f of the compressor corresponding to multiple temperature ranges max_N , N is the ordinal number of the temperature interval, the temperature interval is generated based on the temperature difference relative to the set target temperature; the multiple energy-saving operating gears correspond to multiple energy-saving target values, the energy-saving weight e n Negatively correlated with the energy-saving target value.

[0040] A third aspect of the present invention provides an air conditioner, and an air conditioner energy-saving control method is applied, comprising the following steps:

[0041] Set multiple energy-saving operation gears and set the energy-saving weight corresponding to each energy-saving operation gear n ,n is the energy-saving operation gear number;

[0042] Based on the average power k of the compressor per unit operating frequency, the maximum allowable operating frequency f of the compressor corresponding to the operating condition max , the total power corresponding to the operating conditions W b, Working condition power compensation power W corresponding to the operating condition c Calculate the theoretical total power W0 corresponding to the operating conditions, where

[0043] W0=k×f max +W b +W c

[0044] Select the corresponding energy-saving weight e according to the set energy-saving operation gear n , based on the theoretical total power W0 corresponding to the operating conditions and the selected energy-saving weight e n Calculate the energy-saving calibration power W x , where W x =W0×e n ;

[0045] Calibrate power W according to energy saving x Calculate the energy-saving operation frequency f(x) corresponding to the operating condition and energy-saving operation gear, where

[0046] The compressor is controlled to operate at the energy-saving operating frequency f(x).

[0047] Compared with the prior art, the advantages and positive effects of the present invention are:

[0048] On the one hand, the present invention fully considers the energy-saving needs of users and can adjust the energy-saving targets according to the energy-saving needs of users. On the other hand, it also fully integrates the required operating conditions of the air-conditioning operating conditions, taking into account flexibility and stability.

[0049] Other features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 This is a flow chart of the air conditioner energy-saving control method proposed by the present invention;

[0052] Figure 2 The total power of the test part is W b Flowchart of the time;

[0053] Figure 3 The power compensation power W under test condition c Flowchart of the time;

[0054] Figure 4 This is a schematic block diagram of the structure of the air conditioner energy-saving control device proposed by the present invention;

[0055] Figure 5 It is a structural schematic block diagram of part of the total power test module;

[0056] Figure 6 This is a structural schematic block diagram of the working condition power compensation power test module. DETAILED DESCRIPTION

[0057] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0058] The terms "first," "second," "third," and so on, in the description, claims, and accompanying drawings of the present invention are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0059] In the present invention, the phrase "embodiment" means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. Those skilled in the art will appreciate that the embodiments described herein may be combined with other embodiments.

[0060] Regarding the problem that the air conditioner control method configured to limit the power consumption of the compressor in the prior art has low user participation in the control process and cannot be adjusted according to actual needs, such as Figure 1The present invention provides an air conditioner energy-saving control method. The air conditioner described herein delivers air of specified parameters into the room (supply air) and simultaneously removes a corresponding amount of air from the room (return air). The simultaneous operation of supply and return air maintains the desired indoor air condition. The supply air is pre-processed by air handling equipment, which, in addition to the typical heating and cooling, may also include additional processes such as humidification, dehumidification, filtration, and purification. The air conditioner utilizes a vapor compression refrigeration cycle, which includes a compressor, a throttling device, a condenser, an evaporator, and various auxiliary equipment such as storage, separation, and safety protection. The condenser cools and condenses the high-temperature, high-pressure refrigerant discharged from the compressor into a liquid. The heat released by the refrigerant in the condenser is removed by the cooling medium (water or air). The evaporator utilizes the low-pressure evaporation (boiling) of the liquid refrigerant, converting it into vapor and absorbing heat from the cooled medium to achieve cooling. The evaporator is the device in the refrigeration system that generates and outputs cooling capacity. The compressor is a variable-capacity compressor. The air conditioner is equipped with a microprocessor that controls the compressor to continuously operate at different speeds based on the indoor load, achieving optimal control of the refrigeration system. Given the multivariable, nonlinear, and time-varying nature of air conditioning loads, conventional techniques typically use fuzzy control algorithms, PID control algorithms, a combination of fuzzy and PID control algorithms, or more precise mathematical models to calculate the compressor operating frequency under normal operating conditions.

[0061] like Figure 1 As shown, the air conditioner energy-saving control method provided in this embodiment performs the following steps:

[0062] Step S11: Start the energy-saving control mode. Matching the energy-saving control mode, multiple energy-saving operation gears are pre-set for the air conditioner and the energy-saving weight e corresponding to each energy-saving operation gear is set. n , where n is the energy-saving operation gear number. The user can actively start the energy-saving control mode when needed, or set it to automatically start the energy-saving control mode at a certain time period. For example, when energy-saving, emission-reduction and power-limiting policies are implemented in certain areas, the energy-saving control mode is automatically started during the corresponding time period. Correspondingly, the user can also actively turn off the energy-saving control mode when needed, or set it to exit the energy-saving control mode at a certain time point. After exiting the energy-saving control mode, the compressor is controlled normally, for example, using traditional PID control. Preferably, multiple energy-saving operation gears correspond to multiple energy-saving target values, and the energy-saving weight e n Negatively correlated with the energy-saving target value.

[0063] Step S12: Based on the average power k of the compressor per unit operating frequency, the maximum allowable operating frequency f of the compressor corresponding to the operating condition max , the total power corresponding to the operating conditions W b, Working condition power compensation power W corresponding to the operating condition c Calculate the theoretical total power W0 corresponding to the operating conditions, where

[0064] W0=k×f max +W b +W c

[0065] The average power k of the compressor per unit operating frequency is set according to the compressor model, i.e., the actual power of the compressor per 1 Hz increase. This value is typically provided by the compressor manufacturer and can be pre-stored. When calculating the theoretical total power W0 in this embodiment, the air conditioner's energy consumption is actually divided into three components: the energy consumed by the compressor, the energy consumed by components other than the compressor, and the error introduced by environmental factors such as operating conditions.

[0066] Step S13: Select the corresponding energy-saving weight e according to the set energy-saving operation gear n , based on the theoretical total power W0 corresponding to the operating conditions and the selected energy-saving weight e n Calculate the energy-saving calibration power W x , where W x =W0×e n , energy-saving calibration power W x Represents the ideal energy-saving state that the user wants to achieve. For example, under power-limiting conditions, the energy-saving calibration power W x It can be calculated based on the local power restriction policy, such as the power threshold of the ladder electricity price, and further by selecting the appropriate energy saving weight e n Calculate and set the ideal energy-saving calibration power W x .

[0067] Step S14: On the other hand, the ideal energy-saving operating frequency of the compressor can make the operating power of the air conditioner meet the energy-saving calibration power W x Following the idea of ​​calculating the theoretical total power, it can be concluded that the ideal energy-saving operating frequency of the compressor meets the following requirements:

[0068]

[0069] Therefore, in step S13, based on the theoretical total power W0 corresponding to the operating condition and the selected energy-saving weight e n Calculate the energy-saving calibration power W x After that, the energy-saving operation frequency f(x) corresponding to the operating condition and energy-saving operation gear can be calculated, where

[0070]

[0071] Step S15: Control the compressor to operate at the energy-saving operating frequency f(x), that is, the operation of the air conditioner can meet actual needs according to user needs or energy-saving and emission reduction policies of the place of use.

[0072] In the air conditioner energy-saving control method disclosed in the present invention, the energy-saving weight e n The maximum allowable operating frequency f of the compressor is generated according to the selected energy-saving operation gear. max , Part of the total power W b And working power compensation power W c It is generated according to the required operating conditions. On the one hand, it fully considers the user's energy-saving needs and can adjust the energy-saving target according to the user's energy-saving needs. On the other hand, it also fully integrates the required operating conditions of the air-conditioning operating conditions, taking into account flexibility and stability.

[0073] The following is part of the total power W b The determination process of Figure 2 As shown, part of the total power W b The test was obtained by the following steps.

[0074] Step S21: Setting the operating mode of the air conditioner. The operating mode of the air conditioner includes but is not limited to setting it to operate in cooling mode or setting it to operate in heating mode.

[0075] Step S22: Taking the cooling mode as an example, the air conditioner is connected to the power supply, the target operating frequency of the compressor is set to 0 Hz, the outdoor fan is started, and the total power of the air conditioner measured at this time is set as the partial total power W. b At this time, the multiple sensors and valve groups in the system are in working state, so it can be regarded as the actual power of the air conditioner components except the compressor. b The accuracy requirement is higher, and part of the total power W can be adjusted according to the wind speed of the outdoor fan and the indoor fan. b Perform precise calibration and adjust the wind speed level and total power W b One-to-one data table for part of the total power W b Store the total power W corresponding to the wind speed of the outdoor fan and / or indoor fan. b .

[0076] The following is the working power compensation power W c The determination process of Figure 3 As shown, the working power compensation power W c The test was obtained by the following steps.

[0077] Step S31: Setting the operating mode of the air conditioner. The operating mode of the air conditioner includes but is not limited to setting it to operate in cooling mode or setting it to operate in heating mode.

[0078] Step S32: Taking the cooling mode as an example, the target operating frequency of the compressor is set to the maximum allowable operating frequency f in the cooling mode. max , operate the compressor at the maximum allowable operating frequency f max The total power of the air conditioner measured at this time is set as the first calibration power W1.

[0079] Step S33: On the other hand, based on the average power k of the compressor per unit operating frequency, the maximum allowable operating frequency f of the compressor corresponding to the operating condition max , the total power corresponding to the operating conditions W b Calculate the second calibration power W2, W2 = k × f max +W b ;

[0080] Step S34: Calculate the working condition power compensation power W corresponding to the operating condition c And store, working condition power compensation power W c =W1-W2. Working power compensation power W c It is preferred to store the data in a one-to-one correspondence with the operating conditions so that the corresponding operating condition power compensation power W can be called according to the operating conditions. c .

[0081] Since the air conditioning load is always changing in cooling mode or heating mode, in order to achieve more precise control and ensure that the air conditioning effect is basically stable, in a preferred embodiment, the maximum allowable operating frequency f of the compressor corresponding to the operating condition is max Including the maximum allowable operating frequency f of the compressor corresponding to multiple temperature ranges max_N , N represents the ordinal number of the temperature interval. The temperature interval is generated based on the temperature difference relative to the set target temperature. For example, when the temperature difference between the real-time temperature of the air-conditioned room and the set target temperature is large, the maximum allowable operating frequency f of the compressor corresponding to the operating condition is max The corresponding frequency is large to ensure that the real-time temperature of the air-conditioned room can be close to the set target temperature in a short time. When the temperature difference between the real-time temperature of the air-conditioned room and the set target temperature is small, the maximum allowable operating frequency f of the compressor corresponding to the operating condition is max The corresponding small, to ensure that the real-time temperature of the air-conditioned room is relatively stable. The number of temperature intervals is not limited here. In the embodiment of the set operating condition considering the temperature interval, it is preferred that under experimental conditions, the working condition power compensation power W of different temperature intervals is c Measure, calculate and store them one by one for recall according to different temperature ranges.

[0082] The energy-saving control method of the air conditioner is further introduced by taking the setting of three energy-saving operating gears as an example. The first energy-saving operating gear corresponds to the highest energy-saving target value, that is, the energy consumption control target is the highest, the second energy-saving operating gear corresponds to the second energy-saving target value, and the third energy-saving operating gear corresponds to the smallest energy-saving target value, that is, the energy consumption control target is the lowest. It is preferred to set three buttons corresponding to the energy-saving operating gears on the human-computer interaction interface of the air conditioner remote control or remote control terminal. The user can choose any one to enter the energy-saving control mode. The corresponding energy-saving weights are recorded as e1, e2 and e3 respectively, and satisfy 0<e1<e2<e3<1.

[0083] Further call the average power k of the compressor unit operating frequency, and call the corresponding maximum allowable operating frequency f of the compressor according to the current operating conditions (temperature range) max_N , the total power corresponding to the operating conditions W b_N , Working condition power compensation power W corresponding to the operating condition c_N .

[0084] If the first energy-saving gear is selected,

[0085] If the second energy-saving gear is selected,

[0086] If the third energy-saving gear is selected,

[0087] During the energy-saving control process, when the temperature range corresponding to the current operating condition changes, the maximum allowable operating frequency f of the compressor max_N And the working condition power compensation power W corresponding to the operating condition c_N It will also change accordingly. Therefore, the effect of energy-saving control is also matched with the air-conditioning load, and the control effect is good.

[0088] like Figure 4 As shown, the second aspect of the present invention provides an air conditioner energy-saving control device. The air conditioner energy-saving control device specifically comprises the following parts.

[0089] The setting module 11 is configured to set a plurality of energy-saving operation gears and set an energy-saving weight corresponding to each energy-saving operation gear. n, n is the energy-saving operation gear number. The setting module works after entering the energy-saving control mode. The user can actively start the energy-saving control mode when needed, or set it to automatically start the energy-saving control mode in a certain period of time. For example, when energy-saving, emission reduction and power-limiting policies are implemented in certain areas, the energy-saving control mode is automatically started in the corresponding period of time. Correspondingly, the user can also actively turn off the energy-saving control mode when needed, or set it to exit the energy-saving control mode at a certain time point. After exiting the energy-saving control mode, the compressor is controlled normally, for example, using traditional PID control. Preferably, multiple energy-saving operation gears correspond to multiple energy-saving target values, and the energy-saving weight e n Negatively correlated with the energy-saving target value.

[0090] Theoretical total power calculation module 12 is configured based on the average power k of the compressor unit operating frequency and the maximum allowable operating frequency f of the compressor corresponding to the operating condition. max , the total power corresponding to the operating conditions W b , Working condition power compensation power W corresponding to the operating condition c Calculate the theoretical total power W0 corresponding to the operating conditions, where W0 = k × f max +W b +W c The average power k of the compressor per unit operating frequency is set according to the compressor model. This refers to the actual power the compressor generates for each 1 Hz increase in frequency. This value is typically provided by the compressor manufacturer and can be pre-stored. When calculating the theoretical total power W0, the air conditioner's energy consumption is actually divided into three components: the energy consumed by the compressor, the energy consumed by components other than the compressor, and the error introduced by environmental factors such as operating conditions.

[0091] Energy-saving calibration power calculation module 13, energy-saving calibration power calculation module 13 is configured to select the corresponding energy-saving weight e according to the set energy-saving operation gear n , based on the theoretical total power W0 corresponding to the operating conditions and the selected energy-saving weight e n Calculate the energy-saving calibration power W x , where W x =W0×e n ; Energy saving calibration power W x Represents the ideal energy-saving state that the user wants to achieve. For example, under power-limiting conditions, the energy-saving calibration power W x It can be calculated based on the local power restriction policy, such as the power threshold of the ladder electricity price, and further by selecting the appropriate energy saving weight e n Calculate the ideal energy-saving calibration power W x .

[0092] Energy-saving operation frequency calculation module 14, energy-saving operation frequency calculation module 14 is configured to calculate the energy-saving calibration power W x Calculate the energy-saving operation frequency f(x) corresponding to the operating condition and energy-saving operation gear, where Since the ideal energy-saving operating frequency of the compressor can make the operating power of the air conditioner meet the energy-saving calibration power W x Following the idea of ​​calculating the theoretical total power, it can be concluded that the ideal energy-saving operating frequency of the compressor meets the following requirements: Therefore, when the energy-saving calibration power calculation module 13 is based on the theoretical total power W0 corresponding to the operating condition and the selected energy-saving weight e n Calculate the energy-saving calibration power W x After that, the energy-saving operation frequency calculation module 14 can calculate the energy-saving operation frequency f(x) corresponding to the operating condition and the energy-saving operation gear.

[0093] The control module 15 is configured to control the compressor to operate according to the energy-saving operating frequency f(x), that is, the operation of the air conditioner can meet actual needs according to user needs or energy limitation policies.

[0094] In the air conditioner energy-saving control device disclosed in the present invention, the energy-saving weight e n The maximum allowable operating frequency f of the compressor is generated according to the selected energy-saving operation gear. max , Part of the total power W b And working power compensation power W c It is generated according to the required operating conditions. On the one hand, it fully considers the user's energy-saving needs and can adjust the energy-saving target according to the user's energy-saving needs. On the other hand, it also fully integrates the required operating conditions of the air-conditioning operating conditions, taking into account flexibility and stability.

[0095] The air conditioner energy saving control device is also equipped with a partial total power test module. Figure 5 As shown, the partial total power test module 20 includes:

[0096] The setting unit 21 is configured to set the operating condition of the air conditioner. The operating condition of the air conditioner includes but is not limited to setting the operating condition to be in cooling mode or setting the operating condition to be in heating mode.

[0097] an outdoor fan control unit 22 configured to control the outdoor fan to start when the power is connected and the target operating frequency of the compressor is set to 0 Hz; and

[0098] The measuring unit 23 is configured to set the total power of the air conditioner measured when the outdoor fan is started as part of the total power W bAt this point, the multiple sensors and valve groups in the system are in working state, so it can be regarded as the actual power of the air conditioner components except the compressor. b The accuracy requirement is higher, and part of the total power W can be adjusted according to the wind speed of the outdoor fan and the indoor fan. b Perform precise calibration and adjust the wind speed level and total power W b One-to-one data table for part of the total power W b Store the total power W corresponding to the wind speed of the outdoor fan and / or indoor fan. b .

[0099] The air conditioner energy saving control device is also provided with a working condition power compensation power test module. Figure 6 As shown, the working condition power compensation power test module 30 includes:

[0100] Setting unit 31 is configured to set the operating conditions of the air conditioner. The operating conditions of the air conditioner include, but are not limited to, setting the air conditioner to operate in cooling mode or heating mode. Because the air conditioning load is constantly changing in cooling mode or heating mode, in order to achieve more precise control and ensure a generally stable air conditioning effect, in a preferred embodiment, the operating conditions include multiple temperature ranges, each of which is generated based on the temperature difference relative to a set target temperature.

[0101] The first calibration power measuring unit 32 is configured to set the target operating frequency of the compressor to the maximum allowable operating frequency f max , operate the compressor at the maximum allowable operating frequency f max The total power of the air conditioner measured at the time is set to the first calibration power W1. Taking the cooling mode as an example, the target operating frequency of the compressor is set to the maximum allowable operating frequency f of the cooling mode. max , operate the compressor at the maximum allowable operating frequency f max The total power of the air conditioner measured at the time is set to the first calibration power W1. Preferably, the maximum allowable operating frequency f of the compressor corresponding to the operating condition is max Including the maximum allowable operating frequency f of the compressor corresponding to multiple temperature ranges max_N , N represents the ordinal number of the temperature interval. The temperature interval is generated based on the temperature difference relative to the set target temperature. For example, when the temperature difference between the real-time temperature of the air-conditioned room and the set target temperature is large, the maximum allowable operating frequency f of the compressor corresponding to the operating condition is max The corresponding frequency is large to ensure that the real-time temperature of the air-conditioned room can be close to the set target temperature in a short time. When the temperature difference between the real-time temperature of the air-conditioned room and the set target temperature is small, the maximum allowable operating frequency f of the compressor corresponding to the operating condition ismax The corresponding temperature range is small to ensure that the real-time temperature of the air-conditioned room is relatively stable. The number of temperature ranges is not limited here.

[0102] The second calibration power generation unit 33 is configured to generate a second calibration power based on the average power k of the compressor unit operating frequency and the maximum allowable operating frequency f of the compressor corresponding to the operating condition. max , the total power corresponding to the operating conditions W b Calculate the second calibration power W2, W2 = k × f max +W b ;and

[0103] The working condition power compensation power calculation unit 34 is configured to calculate the working condition power compensation power W corresponding to the operating condition. c And store, working condition power compensation power W c =W1-W2. Working power compensation power W c It is preferred to store the data in a one-to-one correspondence with the operating conditions so that the corresponding operating condition power compensation power W can be called according to the operating conditions. c In the embodiment of setting the operating condition in consideration of the temperature range, it is preferred to compensate the operating power W for the operating conditions in different temperature ranges under experimental conditions. c Measure, calculate and store them one by one for recall according to different temperature ranges.

[0104] The present application also provides an air conditioner that utilizes the aforementioned air conditioner energy-saving control method. The specific steps of the air conditioner control method are described in detail in the aforementioned embodiment and the accompanying drawings. These steps will not be repeated here; an air conditioner utilizing the aforementioned air conditioner control method can achieve the same technical effects.

[0105] An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables the air conditioner to execute part or all of the steps of any method described in the above method embodiments.

[0106] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0107] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, and the division of the above-mentioned units or modules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical or other forms.

[0108] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one physical space, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0109] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0110] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. An air conditioner energy-saving control method, characterized in that: The following steps are involved: Set multiple energy-saving operation gears and set the energy-saving weight corresponding to each energy-saving operation gear , It is the energy-saving operation gear number; Average power based on unit operating frequency of the compressor , the maximum allowable operating frequency of the compressor corresponding to the operating conditions , the part of the total power corresponding to the operating conditions , Compensation power corresponding to the operating conditions Calculate the theoretical total power corresponding to the operating conditions ,in: ； Select the corresponding energy-saving weight according to the set energy-saving operation gear , based on the theoretical total power corresponding to the operating conditions and the selected energy saving weight Calculate energy-saving calibration power ,in ; Calibrate power according to energy saving Calculate the energy-saving operation frequency corresponding to the operating conditions and energy-saving operation gears , wherein: the energy-saving calibration power also satisfies: ; The energy-saving calibration power represents the ideal energy-saving state that the user wants to achieve; Control the compressor to operate at an energy-saving frequency run, ; Among them, the total power of the part Tested by the following steps: Set the operating conditions of the air conditioner; Connect the power supply, set the target operating frequency of the compressor to 0Hz, control the outdoor fan to start, and set the total power of the air conditioner measured at this time as part of the total power and store; The working condition power compensation power Tested by the following steps: Determine the operating conditions of the air conditioner; Set the target operating frequency of the compressor to the maximum allowable operating frequency , operate the compressor at the maximum allowable operating frequency The total power of the air conditioner measured at this time is set to the first calibration power ; Average power based on unit operating frequency of the compressor , the maximum allowable operating frequency of the compressor corresponding to the operating conditions , the part of the total power corresponding to the operating conditions Calculate the second calibration power ; Calculate the operating power compensation power corresponding to the operating conditions And store, the working condition power compensation power .

2. The air conditioner energy saving control method according to claim 1, characterized in that: The maximum allowable operating frequency of the compressor corresponding to the operating condition Including the maximum allowable operating frequency of the compressor corresponding to multiple temperature ranges , is the ordinal number of the temperature interval, which is generated based on the temperature difference relative to the set target temperature.

3. The air conditioner energy saving control method according to claim 1, characterized in that: The multiple energy-saving operating gears correspond to multiple energy-saving target values, and the energy-saving weights Negatively correlated with the energy-saving target value.

4. An air conditioner energy-saving control device, characterized in that: include: A setting module configured to set multiple energy-saving operating gears and set an energy-saving weight corresponding to each energy-saving operating gear , It is the energy-saving operation gear number; Theoretical total power calculation module, the theoretical total power calculation module is configured to calculate the average power of the compressor unit operating frequency , the maximum allowable operating frequency of the compressor corresponding to the operating conditions , the part of the total power corresponding to the operating conditions , Compensation power corresponding to the operating conditions Calculate the theoretical total power corresponding to the operating conditions ,in ; A partial total power test module, the partial total power test module comprising: a first setting unit configured to set an operating condition of the air conditioner; an outdoor fan control unit configured to control the outdoor fan to start when the power is connected and the target operating frequency of the compressor is set to 0 Hz; and The measuring unit is configured to set the total power of the air conditioner measured when the outdoor fan is started as part of the total power and store; The operating condition power compensation power test module includes: a second setting unit, the setting unit being configured to set an operating condition of the air conditioner; A first calibration power measuring unit is configured to set a target operating frequency of the compressor to a maximum allowable operating frequency. , operate the compressor at the maximum allowable operating frequency The total power of the air conditioner measured at this time is set to the first calibration power ; The second calibration power generation unit is configured to generate an average power based on a unit operating frequency of the compressor. , the maximum allowable operating frequency of the compressor corresponding to the operating conditions , the part of the total power corresponding to the operating conditions Calculate the second calibration power ;and The working condition power compensation power calculation unit is configured to calculate the working condition power compensation power corresponding to the operating condition And store, working condition power compensation power ; Energy-saving calibration power calculation module, the energy-saving calibration power calculation module is configured to select the corresponding energy-saving weight according to the set energy-saving operation gear , based on the theoretical total power corresponding to the operating conditions and the selected energy saving weight Calculate energy-saving calibration power ,in ; Energy-saving operation frequency calculation module, the energy-saving operation frequency calculation module is configured to calibrate the power according to the energy-saving Calculate the energy-saving operation frequency corresponding to the operating conditions and energy-saving operation gears , wherein the energy-saving calibration power represents the ideal energy-saving state that the user wants to achieve; the energy-saving calibration power also satisfies: ； The energy-saving operation frequency meets the following requirements: ;and The control module is configured to control the compressor to operate at an energy-saving frequency. run.

5. The air conditioner energy-saving control device according to claim 4, characterized in that: The maximum allowable operating frequency of the compressor corresponding to the operating condition Including the maximum allowable operating frequency of the compressor corresponding to multiple temperature ranges , is the ordinal number of the temperature interval, which is generated based on the temperature difference relative to the set target temperature.

6. The air conditioner energy-saving control device according to claim 4, characterized in that: The multiple energy-saving operating gears correspond to multiple energy-saving target values, and the energy-saving weights Negatively correlated with the energy-saving target value.

7. An air conditioner, characterized in that: Apply the air conditioner energy-saving control method described in any one of claims 1 to 3.

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