Compressor operation control method and device, water treatment equipment and storage medium

Abstract

The invention provides a compressor operation control method and device, water treatment equipment and a storage medium, the method is applied to the water treatment equipment, and the method comprises the steps that the first rotating speed of compressor operation, the inlet water temperature conveyed to a water storage tank by a water inlet pipeline and the set water temperature of the water storage tank are obtained; a first duration threshold value corresponding to the inlet water temperature, the set water temperature and the first rotating speed is determined in a duration mapping relation table, and the duration mapping relation table records the corresponding relation between the inlet water temperature and the set water temperature and the first duration threshold value needed when the module temperature of the frequency conversion module reaches the maximum when the compressor operates at the first rotating speed; and if the first running duration of the compressor running at the first rotating speed reaches a first duration threshold value, the compressor is controlled to run at a second rotating speed, and the second rotating speed is smaller than the first rotating speed. The method can timely and accurately reduce the module temperature of the frequency conversion module.

Description

Technical Field

[0001] The present application relates to the field of variable frequency refrigeration technology, and more specifically, to a control method, device, water treatment equipment and storage medium for compressor operation in the field of variable frequency refrigeration technology. Background Art

[0002] When the compressor is controlled to run at a higher speed, the temperature of the frequency conversion module will increase rapidly, and in severe cases, the frequency conversion module may be burned out. Summary of the invention

[0003] The present application provides a control method, device, water treatment equipment and storage medium for compressor operation, which can timely and accurately reduce the module temperature of the frequency conversion module.

[0004] In a first aspect, a method for controlling the operation of a compressor is provided, which is applied to a water treatment device. The water treatment device includes a compressor, a frequency conversion module, a water storage tank, and a water inlet pipeline. The frequency conversion module is connected to the compressor, and the water inlet pipeline is connected to the water storage tank. The method includes: obtaining a first speed of the compressor, an inlet water temperature delivered to the water storage tank by the water inlet pipeline, and a set water temperature of the water storage tank; determining a first duration threshold corresponding to the inlet water temperature, the set water temperature, and the first speed in a duration mapping relationship table, the duration mapping relationship table recording a correspondence between the first duration threshold required for the module temperature of the frequency conversion module to reach a maximum when the compressor operates at the first speed under the inlet water temperature and the set water temperature; if the first operating time of the compressor at the first speed reaches the first duration threshold, the compressor is controlled to operate at a second speed, and the second speed is less than the first speed.

[0005] In a second aspect, a control device for compressor operation is provided, which is applied to water treatment equipment. The water treatment equipment includes a compressor, a frequency conversion module, a water storage tank, and a water inlet pipeline. The frequency conversion module is connected to the compressor, and the water inlet pipeline is connected to the water storage tank. The device includes: an acquisition unit, used to acquire a first speed of the compressor, an inlet water temperature delivered to the water storage tank by the water inlet pipeline, and a set water temperature of the water storage tank; a determination unit, used to determine a first duration threshold corresponding to the inlet water temperature, the set water temperature, and the first speed in a duration mapping relationship table, the duration mapping relationship table records the correspondence between the time threshold required for the module temperature of the frequency conversion module to reach the maximum when the compressor operates at the first speed under the inlet water temperature and the set water temperature; a control unit, used to control the compressor to operate at a second speed if the first operating time of the compressor at the first speed reaches the first duration threshold, and the second speed is less than the first speed.

[0006] In a third aspect, a water treatment device is provided, comprising: a memory for storing executable program code; a processor for calling and running the executable program code from the memory, so that the water treatment device executes the method in the above-mentioned first aspect or any possible implementation method of the first aspect.

[0007] In a fourth aspect, a computer program product is provided, comprising: a computer program code, which, when executed on a computer, enables the computer to execute the method in the first aspect or any possible implementation of the first aspect.

[0008] In a fifth aspect, a computer-readable storage medium is provided, which stores a computer program code. When the computer program code runs on a computer, the computer executes the method in the above-mentioned first aspect or any possible implementation manner of the first aspect.

[0009] In an embodiment of the present application, the first speed of the compressor, the inlet water temperature delivered to the water storage tank by the water supply pipeline, and the set water temperature of the water storage tank are obtained, and then a first time threshold corresponding to the inlet water temperature, the set water temperature, and the first speed is determined in a time mapping relationship table, wherein the time mapping relationship table records the correspondence between the first time threshold required for the module temperature of the frequency conversion module to reach the maximum when the frequency conversion module controls the compressor to operate at the first speed under the inlet water temperature and the set water temperature, and when the first operating time of the compressor at the first speed reaches the first time threshold, it is determined that the frequency conversion module controls the compressor to continue to operate at the first speed When the compressor is operated at a second speed, the module temperature of the frequency conversion module will reach the maximum temperature. In order to prevent the frequency conversion module from being damaged by high temperature, it is necessary to further reduce the module temperature of the frequency conversion module and reduce the operating speed of the compressor. That is, before it is determined that the module temperature of the frequency conversion module has reached the maximum temperature, the compressor is controlled to operate at the second speed to reduce the heat generated by the frequency conversion module and reduce the module temperature of the frequency conversion module. The module temperature of the frequency conversion module can be reduced in a timely and accurate manner. When the module temperature of the frequency conversion module is reduced, it is directly possible to determine when to change the operating speed of the compressor through the time mapping relationship table. There is no need to install an additional temperature acquisition device on the frequency conversion module, thereby saving installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of a water treatment device provided in an embodiment of the present application;

[0011] Figure 2 It is a flow chart of a method for controlling the operation of a compressor provided in an embodiment of the present application;

[0012] Figure 3 It is a flow chart of a method for controlling the operation of a compressor provided in an embodiment of the present application;

[0013] Figure 4 It is a flow chart of a method for controlling the operation of a compressor provided in an embodiment of the present application;

[0014] Figure 5 is a structural schematic diagram of a compressor operation control device provided in an embodiment of the present application;

[0015] Figure 6 It is a structural schematic diagram of a water treatment device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0016] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0017] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0018] Figure 1 It is a structural schematic diagram of a water treatment device provided in an embodiment of the present application. When the water treatment device is running, the low-temperature and low-pressure gaseous refrigerant is compressed into a high-temperature and high-pressure gaseous refrigerant by a compressor, so that the high-temperature and high-pressure gaseous refrigerant releases heat more effectively in the condenser, thereby improving the refrigeration efficiency. For a fixed-frequency compressor, its speed is fixed, that is, it runs at a set frequency, while a variable-frequency compressor adjusts the speed of the compressor by changing the frequency of the alternating current supplied to the compressor through a variable-frequency module, that is, the speed of the compressor is controlled by the variable-frequency module.

[0019] When the inverter module controls the compressor to run at a certain speed, the semiconductor devices (such as IGBT) used inside the inverter module convert DC power into AC power by fast switching. During the switching operation, the devices will have a certain switching loss and generate heat. The higher the speed of the compressor, the higher the switching frequency of the semiconductor devices of the inverter module, the greater the switching loss, and the more heat is generated. If the inverter module always controls the operation of the compressor when the module temperature is high, the performance of the components inside the inverter module will be reduced, and in serious cases, the inverter module will be damaged.

[0020] Based on this, the present application proposes a control method for compressor operation, which is applied to water treatment equipment, to obtain the first speed of the compressor operation, the inlet water temperature of the water supply pipeline delivered to the water storage tank, and the set water temperature of the water storage tank, and then determine the first duration threshold corresponding to the inlet water temperature, the set water temperature, and the first speed in the duration mapping relationship table, wherein the duration mapping relationship table records the correspondence between the first duration threshold required when the module temperature of the frequency conversion module reaches the maximum and the frequency conversion module controls the compressor to operate at the first speed under the inlet water temperature and the set water temperature, and when the first operating time of the compressor at the first speed reaches the first duration threshold, the frequency conversion module is determined. When the compressor is controlled to continue running at the first speed, the module temperature of the frequency conversion module will reach the maximum temperature. In order to prevent the frequency conversion module from being damaged by high temperature, it is necessary to further reduce the module temperature of the frequency conversion module and reduce the operating speed of the compressor. That is, before determining that the module temperature of the frequency conversion module has reached the maximum temperature, the compressor is controlled to run at the second speed to reduce the heat generated by the frequency conversion module and reduce the module temperature of the frequency conversion module. The module temperature of the frequency conversion module can be reduced in a timely and accurate manner, and when the module temperature of the frequency conversion module is reduced, it is possible to directly determine when to change the operating speed of the compressor through the time mapping relationship table, and there is no need to install an additional temperature acquisition device on the frequency conversion module, thereby saving installation costs.

[0021] based on Figure 1 The structural diagram shown below will be combined with Figure 2-Figure 4 , the control method for the operation of the compressor provided in an embodiment of the present application is introduced in detail.

[0022] See also Figure 2 , is a flow chart of a method for controlling the operation of a compressor provided in an embodiment of the present application. Figure 2 As shown, the method of the embodiment of the present application may include the following steps S101-S103.

[0023] S101, obtaining a first rotation speed of the compressor, a water temperature of the inlet water delivered to the water storage tank through the water inlet pipeline, and a set water temperature of the water storage tank;

[0024] In one embodiment, after the compressor enters the working state, the first speed of the compressor operation is obtained. Optionally, in an embodiment of the present application, when the compressor is triggered to run at a certain speed, the speed can be stored in a set area in advance, so that the first speed of the compressor operation can be obtained in the area. It is understandable that during the operation of the water treatment equipment, the speed of the compressor can be variable, and each time the speed of the compressor changes, the changed speed can be stored in a set area and determined as the first speed, wherein the speed stored in the set area can be changed by receiving a speed adjustment instruction from the user, and the compressor can be controlled to run at the speed. In the embodiment of the present application, the unit of the speed of the compressor can be revolutions per second (r / s) or revolutions per minute (r / min).

[0025] In one embodiment, the inlet water temperature is the temperature of water transported from an external water source to a water storage tank by a water treatment device, and the inlet water temperature transported from the inlet pipe to the water storage tank can be obtained by a temperature detection component installed at the water inlet of the inlet pipe.

[0026] In one embodiment, the set water temperature is the temperature that the water stored in the water storage tank needs to reach after being heated by the water treatment device. The set water temperature can be determined according to the water temperature setting instruction received by the water treatment device. Exemplarily, after the water treatment device receives the water temperature setting instruction, the temperature indicated in the water temperature setting instruction is obtained to be 40 degrees Celsius (℃), and the set water temperature of the water storage tank is determined to be 40℃. The water temperature setting instruction can be triggered by a physical temperature adjustment button of the water treatment device, or by an application installed on a mobile terminal for controlling the water treatment device. The set water temperature of the water storage tank is not limited here.

[0027] S102, determining a first duration threshold corresponding to the inlet water temperature, the set water temperature, and the first speed in a duration mapping relationship table, wherein the duration mapping relationship table records a correspondence between the first duration threshold required for the module temperature of the frequency conversion module to reach a maximum when the compressor runs at the first speed under the inlet water temperature and the set water temperature;

[0028] In one embodiment, the duration mapping relationship table can be pre-stored in the water treatment device. Optionally, the duration mapping relationship table can be pre-stored in the water treatment device when it leaves the factory, or the user can be guided to pre-download the duration mapping relationship table before using the water treatment device, so that the water treatment device can adjust the speed of the compressor according to the pre-stored duration mapping relationship table during the process of treating water from an external water source. It is understandable that since the types of compressors of different types of water treatment devices may be different, in the embodiment of the present application, the specific data in the duration mapping relationship table is different for different types of water treatment devices.

[0029] Specifically, the duration mapping relationship table stores the correspondence between the inlet water temperature, the set water temperature, and the first duration threshold required when the module temperature of the frequency conversion module reaches the maximum when the frequency conversion module controls the compressor to operate at the first speed. Thus, after obtaining the set water temperature, the inlet water temperature, and the first speed, the first duration threshold corresponding to (the set water temperature, the inlet water temperature, and the first speed) can be determined in the duration mapping relationship table. The duration mapping relationship table is shown in Table 1 below:

[0030]

[0031] For example, if the water treatment equipment obtains that the first speed of the compressor is 4000 (r / s), the water inlet temperature is 25°C, and the set water temperature is 3°C, the first duration threshold is determined to be 40s through the duration mapping relationship table.

[0032] S103: If a first operation time during which the compressor operates at a first speed reaches a first time threshold, the compressor is controlled to operate at a second speed, where the second speed is less than the first speed.

[0033] In one embodiment, when the compressor is running at a first speed, a timing device is started to start timing, and a first operating time of the compressor running at the first speed is obtained. When the first operating time reaches a first time threshold, if the compressor continues to run at the first speed, the heat generated by the frequency conversion module when controlling the compressor to run at the first speed makes the module temperature of the frequency conversion module reach the maximum. In order to avoid the module temperature reaching the maximum, when the first operating time reaches the first time threshold, the compressor is controlled to run at a second speed, wherein the second speed is less than the first speed.

[0034] It can be understood that by controlling the compressor to operate at a second speed that is lower than the first speed, the heat generated when the frequency conversion module controls the compressor to operate can be reduced, thereby preventing the module temperature of the frequency conversion module from rising rapidly to the maximum temperature. It can be understood that a fan that reduces the module temperature of the frequency conversion module is installed around the frequency conversion module. After the speed of the compressor is reduced, the rate of increase of heat in the frequency conversion module is lower than the heat dissipation rate of the fan within a certain period of time, thereby achieving the effect of reducing the module temperature of the frequency conversion module.

[0035] In an embodiment of the present application, the first speed of the compressor, the inlet water temperature delivered to the water storage tank by the water supply pipeline, and the set water temperature of the water storage tank are obtained, and then a first time threshold corresponding to the inlet water temperature, the set water temperature, and the first speed is determined in a time mapping relationship table, wherein the time mapping relationship table records the correspondence between the first time threshold required for the module temperature of the frequency conversion module to reach the maximum when the frequency conversion module controls the compressor to operate at the first speed under the inlet water temperature and the set water temperature, and when the first operating time of the compressor at the first speed reaches the first time threshold, it is determined that the frequency conversion module controls the compressor to continue to operate at the first speed When the compressor is operated at a second speed, the module temperature of the frequency conversion module will reach the maximum temperature. In order to prevent the frequency conversion module from being damaged by high temperature, it is necessary to further reduce the module temperature of the frequency conversion module and reduce the operating speed of the compressor. That is, before it is determined that the module temperature of the frequency conversion module has reached the maximum temperature, the compressor is controlled to operate at the second speed to reduce the heat generated by the frequency conversion module and reduce the module temperature of the frequency conversion module. The module temperature of the frequency conversion module can be reduced in a timely and accurate manner. When the module temperature of the frequency conversion module is reduced, it is directly possible to determine when to change the operating speed of the compressor through the time mapping relationship table. There is no need to install an additional temperature acquisition device on the frequency conversion module, thereby saving installation costs.

[0036] See also Figure 3 , is a flow chart of a method for controlling the operation of a compressor provided in an embodiment of the present application. Figure 3 As shown, the method of the embodiment of the present application may include the following steps S201-S204.

[0037] S201, obtaining the water temperature of the inlet water delivered to the water storage tank by the water inlet pipeline and the set water temperature of the water storage tank;

[0038] For details, please refer to the description of step S101 in the above embodiment of the specification, and the method of obtaining the inlet water temperature and the set water temperature of the water storage tank is not limited here.

[0039] S202, determining the operating speed of the compressor to be a first speed based on the inlet water temperature and the set water temperature;

[0040] S203, controlling the compressor to operate at a first speed;

[0041] In one embodiment, after obtaining the inlet water temperature and the set water temperature of the water storage tank, the method for determining the speed of the compressor corresponding to the inlet water temperature and the set water temperature can be to obtain the correlation between the inlet water temperature, the set water temperature, and the operating speed of the compressor, thereby, after obtaining the inlet water temperature and the set water temperature, the first speed of the compressor is determined based on them.

[0042] S204, determining a first duration threshold corresponding to the inlet water temperature, the set water temperature, and the first speed in a duration mapping relationship table, wherein the duration mapping relationship table records a correspondence between the first duration threshold required for the module temperature of the frequency conversion module to reach a maximum when the compressor runs at the first speed under the inlet water temperature and the set water temperature;

[0043] S205: If the first operation time of the compressor running at the first speed reaches a first time threshold, control the compressor to run at a second speed, where the second speed is less than the first speed.

[0044] For details, please refer to the description of step S101 in the above embodiment of the specification, which will not be elaborated here.

[0045] Furthermore, in an embodiment of the present application, after controlling the compressor to run at the second speed, the actual water temperature of the water storage tank can also be obtained. When the actual water temperature of the water storage tank reaches the set water temperature, the compressor is controlled to stop running.

[0046] Specifically, a temperature sensor can be installed inside the water storage tank, so as to obtain the temperature of the water stored inside the water storage tank after being heated by the water treatment device. When it is determined that the actual water temperature of the water storage tank reaches the set temperature, it is determined that the actual temperature of the water in the water storage tank has reached the temperature required by the user, and the water treatment device does not need to continue to heat or cool the water, then the compressor is controlled to stop running.

[0047] Furthermore, when the frequency conversion module controls the compressor to run at the first speed, if the actual water temperature in the water storage tank reaches the set water temperature, it is determined that the water treatment equipment does not need to continue to heat or cool the water, then the compressor is controlled to stop running.

[0048] Further, when it is obtained that the second operating time of the compressor running at the second speed reaches the second time threshold and the actual water temperature does not reach the set water temperature, the operating speed of the compressor is determined to be a third speed, wherein the third speed is less than the second speed.

[0049] Exemplarily, the first speed is 4000 (r / s). When the first operation time of the compressor running at the first speed reaches 40s, if it is determined that the actual water temperature in the water storage tank has not reached the set water temperature, the compressor is controlled to run at the second speed of 2000 (r / s). The second duration threshold is further determined based on the set water temperature, the inlet water temperature, the actual water temperature, the first speed, and the first operation time. When the second operation time of the compressor running at the second speed reaches the second duration threshold, it is determined that if the frequency conversion module continues to control the compressor to run at the second speed, there is a problem that the module temperature of the frequency conversion module is too high and the frequency conversion module is damaged, and the compressor is controlled to run at a smaller third speed. Among them, a second duration mapping relationship table between the set water temperature, the inlet water temperature, the actual water temperature, the first speed, the first operation time and the second duration threshold can also be established. The time for changing the second speed of the compressor operation is determined by using a second duration mapping relationship table determined by the set water temperature, water inlet temperature, actual water temperature, the first speed, the first operating time, and the second duration threshold. The second duration threshold is determined by comprehensively considering the temperature changes of the water to be treated by the water treatment equipment and the actual treatment conditions in the previous stage, thereby improving the accuracy of determining the second duration threshold.

[0050] Further, in an embodiment of the present application, when the third operating time of the compressor running at the third speed reaches the third time threshold, and the actual water temperature of the water storage tank does not reach the set water temperature, it is determined that the cooling or heating effect of the current compressor is poor, and the compressor is controlled to stop running, so as to avoid the module temperature of the frequency conversion module from continuing to rise, while reducing the loss of the compressor operation. The third time threshold can also be determined according to the third time mapping relationship table. The third time mapping relationship table maps the corresponding relationship between the set water temperature, water inlet temperature, actual water temperature, first speed, first operating time, second speed, second operating time, third speed and the third time threshold.

[0051] In the embodiment of the present application, the first speed of the compressor is determined by the temperature of the inlet water delivered to the water storage tank through the water inlet pipeline and the set water temperature of the water storage tank. The speed of the compressor can be determined by the range of change of the water temperature that needs to be adjusted for water treatment. The speed of the compressor is determined by the actual range of change of the temperature that needs to be adjusted, and the operation of the compressor can be accurately controlled; and when the compressor is controlled to operate at the second speed, if it is detected that the actual water temperature in the water storage tank reaches the set water temperature, the compressor is controlled to stop running, thereby realizing the control of the compressor when the outlet water temperature meets the set water temperature, thereby avoiding energy waste while avoiding the frequency conversion module from continuing to operate because the compressor is controlled to stop operating. Heat is generated, thereby lowering the module temperature of the frequency conversion module; further, when the second operating time when the compressor runs at the second speed reaches the second time threshold and the actual water temperature is lower than the set water temperature, the speed of the compressor is reduced to the third speed, and the speed of the compressor is further reduced to reduce the heat generated when the frequency conversion module controls the operation of the compressor, thereby lowering the module temperature of the frequency conversion module; further, when the operating time when the compressor runs at the third speed reaches the third time threshold and the actual water temperature does not reach the set water temperature, it is determined to shut down the compressor, so as to avoid continuing to control the operation of the compressor when the operating efficiency of the compressor is poor, thereby reducing the module temperature of the frequency conversion module while reducing energy loss.

[0052] See also Figure 4 , is a flow chart of a method for controlling the operation of a compressor provided in an embodiment of the present application. Figure 4 As shown, the method of the embodiment of the present application may include the following steps S301-S304.

[0053] S301, obtaining a preset water inlet temperature, a preset setting temperature, and a preset operating speed;

[0054] S302, obtaining the operation time when the module temperature reaches the maximum when the frequency conversion module controls the compressor to operate at a preset operating speed under a preset water inlet temperature and a preset set temperature;

[0055] S303, establishing a correlation relationship among the operation time, the preset water inlet temperature, the preset setting temperature, and the preset operation speed;

[0056] S304, updating the preset water inlet temperature, preset set temperature, and preset operating speed until the preset conditions are met, and obtaining a duration mapping relationship table based on the association relationship, wherein the preset condition is that the amount of data in the association relationship meets the quantity threshold.

[0057] In one embodiment, when constructing the correlation between the operation time, the preset water inlet temperature, the preset set temperature, and the preset operation speed, it can be constructed through experimental data. When constructing the duration mapping relationship table, it is necessary to obtain the change of the maximum temperature of the frequency conversion module and determine the operating time of the water treatment equipment under the preset water inlet temperature, preset set temperature, and preset operating speed. Therefore, it is necessary to install a temperature sensor around the frequency conversion module to obtain the module temperature when the frequency conversion module controls the compressor to operate at a preset operating speed, and determine the operating time of the compressor when the module temperature reaches the maximum, and then establish a correlation between the operating time, the preset water inlet temperature, the preset set temperature, and the preset operating speed. It can be understood that the preset water inlet temperature, the preset set temperature, and the preset operating speed are control variables, which can be changed artificially, and the operating time is based on the preset water inlet temperature, the preset set temperature, and the preset operating speed. The time required for the module temperature to reach the maximum when the frequency conversion module controls the compressor to operate at a preset operating speed changes according to the changes in the preset water inlet temperature, the preset set temperature, and the preset operating speed, wherein the preset water inlet temperature is the water temperature delivered to the water storage tank by the water supply pipeline during the experiment, the preset set temperature is the water temperature required to be reached by the water outlet tank set during the experiment, and the preset operating speed is the operating speed of the compressor during the experiment.

[0058] Further, in the embodiment of the present application, the step of determining the operating time during which the module temperature reaches the maximum when the compressor operates at a preset operating speed includes:

[0059] S3021, obtaining the first moment when the frequency conversion module controls the compressor to operate at a preset operating speed under a preset water inlet temperature and a preset set temperature;

[0060] S3022, obtaining the module temperature when the frequency conversion module controls the compressor to operate at a preset operating speed;

[0061] S3023, if the module temperature at the second moment is greater than or equal to the temperature threshold, and the module temperature does not change within a preset time period, it is determined that the module temperature reaches the maximum temperature when the frequency conversion module controls the compressor to operate at a preset operating speed;

[0062] S3024, determining the running time based on the first moment and the second moment

[0063] In one embodiment, the water treatment equipment controls the compressor to rotate at a preset operating speed at a first moment (starting moment) under a preset water inlet temperature and a preset set temperature, and then controls the compressor to rotate at the preset operating speed, and obtains the module temperature when the frequency conversion module controls the compressor to rotate at the preset operating speed. If at the second moment, the module temperature of the frequency conversion module is greater than or equal to the temperature threshold, and the module temperature does not change within a preset time period, it is determined that the maximum temperature of the module temperature has been reached when the frequency conversion module controls the compressor to operate at the preset operating speed, the time between the second moment and the first moment is obtained, and the time period is determined to be the operating time.

[0064] It is understandable that when the water treatment equipment controls the compressor to run at a preset operating speed at a preset water inlet temperature and a preset set temperature, the module temperature may change, for example, first reaching the temperature threshold and then decreasing. This application determines that the module temperature has reached the maximum value by judging that the module temperature is greater than or equal to the temperature threshold and the module temperature no longer changes. It can accurately determine whether the module temperature has reached the maximum value, and provide a reliable basis for the subsequent timely adjustment of the operating speed of the compressor.

[0065] Furthermore, after obtaining the correlation between the operating time, the preset water inlet temperature, the preset set temperature, and the preset operating speed, change any one or more of the preset water inlet temperature, the preset set temperature, and the preset operating speed to obtain the operating time obtained after the data is changed, and then the correlation relationship, until the amount of data in the established correlation relationship meets the quantity threshold, determine that the established correlation relationship that meets the quantity threshold is a duration mapping relationship table.

[0066] It can be understood that when the frequency conversion module controls the operation of the compressor, the module temperature of the frequency conversion module is not only affected by the operating speed of the compressor, but also has a relationship with the water temperature adjustment required by the water treatment equipment. Therefore, in this application, the accuracy of the obtained time mapping relationship table is improved by establishing a correlation between the preset water inlet temperature, the preset set temperature, and the preset operating speed and the operating time.

[0067] In an embodiment of the present application, the operating time when the module temperature reaches the maximum when the frequency conversion module controls the compressor to operate at a preset operating speed is obtained by presetting the water inlet temperature, the preset set temperature, and the preset operating speed, thereby establishing a time mapping relationship table. When water treatment is actually used, the operating speed of the compressor can be accurately adjusted to reduce the module temperature of the frequency conversion module without installing a temperature sensor on the frequency conversion module.

[0068] based on Figure 1 The structural diagram of Figure 5 , the control device for the operation of the compressor provided in the embodiment of the present application is introduced in detail. It should be noted that, Figure 5A control device for the operation of a compressor in the present application Figure 2-Figure 4 For the convenience of explanation, only the part related to the embodiment of the present application is shown. For the specific technical details not disclosed, please refer to the present application. Figure 2-Figure 4 Specifically, the control device 1 for the operation of the compressor comprises:

[0069] An acquisition unit 11 is used to acquire a first speed of the compressor, a water temperature of the inlet water delivered to the water storage tank by the water inlet pipeline, and a set water temperature of the water storage tank;

[0070] The determining unit 12 is used to determine a first duration threshold value corresponding to the inlet water temperature, the set water temperature, and the first speed in the duration mapping relationship table, wherein the duration mapping relationship table records the correspondence between the duration threshold value required for the module temperature of the frequency conversion module to reach the maximum when the compressor runs at the first speed under the inlet water temperature and the set water temperature;

[0071] The control unit 13 is configured to control the compressor to operate at a second speed if a first operation time during which the compressor operates at a first speed reaches a first time threshold, wherein the second speed is less than the first speed.

[0072] Optionally, the acquiring unit includes:

[0073] The acquisition subunit 111 is used to acquire the water temperature of the inlet water delivered to the water storage tank by the water inlet pipeline and the set water temperature of the water storage tank;

[0074] A determination subunit 112, configured to determine that the operating speed of the compressor is a first speed based on the inlet water temperature and the set water temperature;

[0075] The control subunit 113 is used to control the compressor to run at a first speed.

[0076] Optionally, the compressor operation control device 1 further includes:

[0077] A preset acquisition unit 14 is used to acquire a preset water inlet temperature, a preset setting temperature, and a preset operating speed;

[0078] The duration acquisition unit 15 is used to acquire the operation duration for which the module temperature reaches the maximum when the frequency conversion module controls the compressor to operate at a preset operating speed under a preset water inlet temperature and a preset set temperature;

[0079] An establishing unit 16 is used to establish a correlation relationship among the operation time, the preset water inlet temperature, the preset setting temperature, and the preset operation speed;

[0080] The updating unit 17 is used to update the preset water inlet temperature, the preset set temperature, and the preset operating speed until the preset conditions are met, and obtain a duration mapping relationship table based on the association relationship. The preset condition is that the data volume of the association relationship meets the quantity threshold.

[0081] Optionally, the establishing unit 16 includes:

[0082] The time acquisition subunit 161 is used to acquire the first time when the frequency conversion module controls the compressor to operate at a preset operating speed under a preset water inlet temperature and a preset set temperature;

[0083] The temperature acquisition subunit 162 is used to acquire the module temperature when the frequency conversion module controls the compressor to operate at a preset operating speed;

[0084] The first determination subunit 163 is used to determine that the module temperature reaches the maximum temperature when the frequency conversion module controls the compressor to operate at a preset operating speed if the module temperature is greater than or equal to the temperature threshold at the second moment and the module temperature does not change within a preset time period;

[0085] The second determining subunit 164 is configured to determine the running time based on the first moment and the second moment.

[0086] Optionally, the compressor operation control device 1 further includes:

[0087] A water temperature acquisition unit 18 is used to acquire the actual water temperature of the water in the water storage tank;

[0088] The shutdown control unit 19 is used to control the compressor to stop running if the actual water temperature of the water storage tank reaches the set water temperature.

[0089] Optionally, the compressor operation control device 1 further includes:

[0090] The operation duration acquisition unit 20 is used to acquire a second operation duration of the compressor running at a second speed;

[0091] The speed determination unit 21 is used to determine that the operating speed of the compressor is a third speed if the actual water temperature does not reach the set water temperature and the second operating time reaches the second time threshold;

[0092] The operation control unit 22 is used to control the compressor to operate at a third speed, which is lower than the second speed.

[0093] Optionally, the compressor operation control device 1 further includes:

[0094] A third duration acquisition unit 23, used to acquire a third operation duration of the compressor running at a third speed;

[0095] The shutdown control unit 24 is used to control the compressor to stop running if the actual water temperature of the water storage tank does not reach the set water temperature and the third operating time reaches the third time threshold.

[0096] In an embodiment of the present application, the first speed of the compressor, the inlet water temperature delivered to the water storage tank by the water supply pipeline, and the set water temperature of the water storage tank are obtained, and then a first time threshold corresponding to the inlet water temperature, the set water temperature, and the first speed is determined in a time mapping relationship table, wherein the time mapping relationship table records the correspondence between the first time threshold required for the module temperature of the frequency conversion module to reach the maximum when the frequency conversion module controls the compressor to operate at the first speed under the inlet water temperature and the set water temperature, and when the first operating time of the compressor at the first speed reaches the first time threshold, it is determined that the frequency conversion module controls the compressor to continue to operate at the first speed When the compressor is operated at a second speed, the module temperature of the frequency conversion module will reach the maximum temperature. In order to prevent the frequency conversion module from being damaged by high temperature, it is necessary to further reduce the module temperature of the frequency conversion module and reduce the operating speed of the compressor. That is, before it is determined that the module temperature of the frequency conversion module has reached the maximum temperature, the compressor is controlled to operate at the second speed to reduce the heat generated by the frequency conversion module and reduce the module temperature of the frequency conversion module. The module temperature of the frequency conversion module can be reduced in a timely and accurate manner. When the module temperature of the frequency conversion module is reduced, it is directly possible to determine when to change the operating speed of the compressor through the time mapping relationship table. There is no need to install an additional temperature acquisition device on the frequency conversion module, thereby saving installation costs.

[0097] See also Figure 6 , which is a schematic diagram of the structure of a water treatment device provided in the embodiment of the present application. Figure 6 As shown, the water treatment device 500 includes a processor 501 and a memory 502. The processor 501 is electrically connected to the memory 502.

[0098] The processor 501 is the control center of the water treatment device 500 and may include one or more processing cores. The processor 501 uses various interfaces and lines to connect the various parts of the entire water treatment device 500, and executes various functions and processes data of the water treatment device 500 by running or calling the computer program stored in the memory 502, and calling the data stored in the memory 502, so as to control the water treatment device 500 as a whole. Optionally, the processor 501 can be implemented in at least one hardware form of digital signal processing (DSP), field programmable gate array (FPGA), and programmable logic array (PLA). The processor 501 can integrate one or more combinations of CPU, graphics processing unit (GPU), modem, etc. Among them, the CPU mainly processes the operating system, user pages, and applications; the GPU is responsible for rendering and drawing the display content; and the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 501, and it can be implemented separately through a communication chip.

[0099] The memory 502 can be used to store software programs and modules, and the processor 501 executes various functional applications and data processing by running the computer programs and modules stored in the memory 502. The memory 502 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, a computer program required for at least one function, etc.; the data storage area can store data created according to the use of the water treatment device 500, etc.

[0100] In addition, the memory 502 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device. Accordingly, the memory 502 may also include a memory controller to provide the processor 501 with access to the memory 502.

[0101] In this embodiment, the processor 501 in the water treatment device 500 loads instructions corresponding to the processes of one or more computer programs into the memory 502 according to the following steps, and the processor 501 runs the computer program stored in the memory 502 to implement various functions, as follows:

[0102] Obtaining a first speed of the compressor, a water temperature of water delivered to the water storage tank through a water inlet pipeline, and a set water temperature of the water storage tank;

[0103] Determine in the time mapping relationship table a first time threshold value corresponding to the inlet water temperature, the set water temperature, and the first speed, wherein the time mapping relationship table records the correspondence between the first time threshold value required for the module temperature of the frequency conversion module to reach the maximum when the compressor runs at the first speed under the inlet water temperature and the set water temperature;

[0104] If the first operating time of the compressor running at the first speed reaches the first time threshold, the compressor is controlled to run at a second speed, and the second speed is less than the first speed. Optionally, when the processor 501 executes the acquisition of the first speed of the compressor, the water temperature of the water inlet pipe delivered to the water storage tank, and the set water temperature of the water storage tank, it specifically executes:

[0105] Obtain the water temperature of the water delivered to the water storage tank through the water inlet pipeline and the set water temperature of the water storage tank;

[0106] Determine the operating speed of the compressor as a first speed based on the inlet water temperature and the set water temperature;

[0107] The compressor is controlled to operate at a first speed.

[0108] Optionally, before determining the first duration threshold corresponding to the inlet water temperature, the set water temperature, and the first speed in the duration mapping relationship table, the processor 501 further executes:

[0109] Get the preset water inlet temperature, preset set temperature, and preset operating speed;

[0110] Obtain the operation time when the module temperature reaches the maximum when the frequency conversion module controls the compressor to operate at a preset operating speed under a preset water inlet temperature and a preset set temperature;

[0111] Establishing the correlation between the running time, the preset water inlet temperature, the preset set temperature, and the preset running speed;

[0112] The preset water inlet temperature, preset set temperature, and preset operating speed are updated until the preset conditions are met, and a duration mapping relationship table is obtained based on the association relationship. The preset condition is that the data volume of the association relationship meets the quantity threshold.

[0113] Optionally, when the processor 501 executes to obtain the module temperature reaching the maximum operating time when the frequency conversion module controls the compressor to operate at a preset operating speed at a preset water inlet temperature and a preset set temperature, the processor 501 specifically executes:

[0114] Obtaining the first moment when the frequency conversion module controls the compressor to run at a preset operating speed under a preset water inlet temperature and a preset set temperature;

[0115] Obtain the module temperature when the frequency conversion module controls the compressor to run at a preset operating speed;

[0116] If the module temperature is greater than or equal to the temperature threshold at the second moment, and the module temperature does not change within the preset time period, it is determined that the module temperature reaches the maximum temperature when the frequency conversion module controls the compressor to operate at the preset operating speed;

[0117] The running time is determined based on the first time and the second time.

[0118] Optionally, after executing controlling the compressor to run at the second speed, the processor 501 further executes:

[0119] Get the actual water temperature of the water in the water storage tank;

[0120] If the actual water temperature of the water storage tank reaches the set water temperature, the compressor is controlled to stop running.

[0121] Optionally, after obtaining the actual water temperature of the water in the water storage tank, the processor 501 further executes:

[0122] Obtaining a second operating time during which the compressor operates at a second speed;

[0123] If the actual water temperature does not reach the set water temperature, and the second operating time reaches the second time threshold, the operating speed of the compressor is determined to be the third speed;

[0124] The compressor is controlled to operate at a third speed, which is lower than the second speed.

[0125] Optionally, after executing controlling the compressor to operate at the third speed, the processor 501 further executes:

[0126] obtaining a third operating time during which the compressor operates at a third speed;

[0127] If the actual water temperature of the water storage tank does not reach the set water temperature, and the third operating time reaches the third time threshold, the compressor is controlled to stop running.

[0128] In an embodiment of the present application, the first speed of the compressor, the inlet water temperature delivered to the water storage tank by the water supply pipeline, and the set water temperature of the water storage tank are obtained, and then a first time threshold corresponding to the inlet water temperature, the set water temperature, and the first speed is determined in a time mapping relationship table, wherein the time mapping relationship table records the correspondence between the first time threshold required for the module temperature of the frequency conversion module to reach the maximum when the frequency conversion module controls the compressor to operate at the first speed under the inlet water temperature and the set water temperature, and when the first operating time of the compressor at the first speed reaches the first time threshold, it is determined that the frequency conversion module controls the compressor to continue to operate at the first speed When the compressor is operated at a second speed, the module temperature of the frequency conversion module will reach the maximum temperature. In order to prevent the frequency conversion module from being damaged by high temperature, it is necessary to further reduce the module temperature of the frequency conversion module and reduce the operating speed of the compressor. That is, before it is determined that the module temperature of the frequency conversion module has reached the maximum temperature, the compressor is controlled to operate at the second speed to reduce the heat generated by the frequency conversion module and reduce the module temperature of the frequency conversion module. The module temperature of the frequency conversion module can be reduced in a timely and accurate manner. When the module temperature of the frequency conversion module is reduced, it is directly possible to determine when to change the operating speed of the compressor through the time mapping relationship table. There is no need to install an additional temperature acquisition device on the frequency conversion module, thereby saving installation costs.

[0129] It should be understood that the device provided in the embodiment of the present application is used to execute the above-mentioned control method for the operation of a compressor, and thus can achieve the same effect as the above-mentioned implementation method.

[0130] In the case of an integrated unit, the device may include a processing module and a storage module. When the device is applied to a water treatment device, the processing module may be used to control and manage the actions of the water treatment device. The storage module may be used to support the water treatment device in executing related program codes, etc.

[0131] The processing module may be a processor or a controller, which may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module may be a memory.

[0132] In addition, the device provided in the embodiment of the present application can specifically be a chip, component or module, and the chip may include a connected processor and memory; wherein the memory is used to store instructions, and when the processor calls and executes the instructions, the chip can execute a compressor operation control method provided in the above embodiment.

[0133] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program code is stored. When the computer program code is executed on a computer, the computer executes the above-mentioned related method steps to implement a compressor operation control method provided in the above embodiment.

[0134] This embodiment further provides a computer program product. When the computer program product is run on a computer, the computer is enabled to execute the above-mentioned related steps to implement a method for controlling the operation of a compressor provided in the above embodiment.

[0135] Among them, the device, computer-readable storage medium, computer program product or chip provided in this embodiment is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be repeated here.

[0136] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0137] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, 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 through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0138] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for controlling the operation of a compressor, characterized in that: Applied to water treatment equipment, the water treatment equipment includes a compressor, a frequency conversion module, a water storage tank, and a water inlet pipeline, the frequency conversion module is connected to the compressor, the water inlet pipeline is connected to the water storage tank, and the method includes: Acquire a first speed of the compressor, a water temperature of the water delivered to the water storage tank by the water inlet pipeline, and a set water temperature of the water storage tank; Determine in a time mapping relationship table a first time threshold value corresponding to the inlet water temperature, the set water temperature, and the first speed, wherein the time mapping relationship table records a correspondence between the first time threshold value required for the module temperature of the frequency conversion module to reach a maximum when the compressor runs at the first speed under the inlet water temperature and the set water temperature; If a first operation time during which the compressor operates at the first speed reaches the first time threshold, the compressor is controlled to operate at a second speed, which is lower than the first speed.

2. The method according to claim 1, characterized in that The obtaining of the first speed of the compressor, the water temperature of the inlet water delivered to the water storage tank by the water inlet pipeline, and the set water temperature of the water storage tank includes: Obtaining the water temperature of the inlet water delivered to the water storage tank by the water inlet pipeline and the set water temperature of the water storage tank; Determining the operating speed of the compressor as a first speed based on the inlet water temperature and the set water temperature; The compressor is controlled to operate at the first speed.

3. The method according to claim 1, characterized in that Before determining the first duration threshold corresponding to the inlet water temperature, the set water temperature, and the first speed in the duration mapping relationship table, the method further includes: Get the preset water inlet temperature, preset set temperature, and preset operating speed; Obtaining the operation time during which the module temperature reaches the maximum when the frequency conversion module controls the compressor to operate at the preset operating speed under the preset water inlet temperature and the preset set temperature; Establishing a correlation relationship among the operation time, the preset water inlet temperature, the preset setting temperature, and the preset operation speed; The preset water inlet temperature, the preset set temperature, and the preset operating speed are updated until a preset condition is met, and the duration mapping relationship table is obtained based on the association relationship, wherein the preset condition is that the amount of data in the association relationship meets a quantity threshold.

4. The method according to claim 3, characterized in that The obtaining of the operation time during which the module temperature reaches the maximum when the frequency conversion module controls the compressor to operate at the preset operating speed under the preset water inlet temperature and the preset set temperature includes: Acquire the first moment when the frequency conversion module controls the compressor to operate at the preset operating speed under the preset water inlet temperature and the preset set temperature; Acquire the module temperature when the frequency conversion module controls the compressor to operate at the preset operating speed; If the module temperature is greater than or equal to the temperature threshold at the second moment, and the module temperature does not change within a preset time period, it is determined that the module temperature reaches the maximum temperature when the frequency conversion module controls the compressor to operate at the preset operating speed; The running time is determined based on the first time and the second time.

5. The method according to claim 1, characterized in that After controlling the compressor to operate at the second speed, the method further includes: Obtaining the actual water temperature of the water in the water storage tank; If the actual water temperature of the water storage tank reaches the set water temperature, the compressor is controlled to stop running.

6. The method according to claim 5, characterized in that After obtaining the actual water temperature of the water in the water storage tank, the method further includes: Acquire a second operating time duration of the compressor operating at the second speed; If the actual water temperature does not reach the set water temperature, and the second operating time reaches a second time threshold, determining that the operating speed of the compressor is a third speed; The compressor is controlled to operate at the third speed, where the third speed is lower than the second speed.

7. The method according to claim 6, characterized in that After controlling the compressor to operate at the third speed, the method further includes: Acquire a third operation time duration during which the compressor operates at the third speed; If the actual water temperature of the water storage tank does not reach the set water temperature, and the third operating time reaches a third time threshold, the compressor is controlled to stop running.

8. A control device for compressor operation, characterized in that: Applied to water treatment equipment, the water treatment equipment includes a compressor, a frequency conversion module, a water storage tank, and a water inlet pipeline, the frequency conversion module is connected to the compressor, the water inlet pipeline is connected to the water storage tank, and the device includes: An acquisition unit, used for acquiring a first speed of the compressor, a water temperature of the inlet water delivered to the water storage tank by the water inlet pipeline, and a set water temperature of the water storage tank; a determining unit, configured to determine a first duration threshold value corresponding to the inlet water temperature, the set water temperature, and the first speed in a duration mapping relationship table, wherein the duration mapping relationship table records a correspondence between a time threshold value required for the module temperature of the frequency conversion module to reach a maximum when the compressor runs at a first speed under the inlet water temperature and the set water temperature; A control unit is used to control the compressor to operate at a second speed if a first operating time of the compressor operating at the first speed reaches the first time threshold, and the second speed is less than the first speed.

9. A water treatment device, characterized in that: The water treatment equipment comprises: A memory for storing executable program codes; A processor, configured to call and run the executable program code from the memory, so that the water treatment device executes the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program code, and when the computer program code is executed, the method according to any one of claims 1 to 7 is implemented.

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