Air conditioner, anti-freezing control method and device thereof and computer equipment

Abstract

The invention relates to an air conditioner and an anti-freezing control method and device thereof, computer equipment, a computer readable storage medium and a computer program product. The anti-freezing control method comprises the steps that the environment temperature and the pipeline temperature of a condenser of the air conditioner are obtained, and the corresponding anti-freezing starting condition is determined according to the environment temperature and the pipeline temperature based on the operation state of a compressor of an outdoor unit. And if the running state of the compressor, the environment temperature and the pipeline temperature all meet the anti-freezing starting condition, the compressor is controlled to stop based on the running state of the compressor. The air conditioner comprises an outdoor unit and an indoor unit which are in mutual non-communication connection, the condenser is arranged on the outdoor unit of the air conditioner, the environment temperature represents the temperature of the environment where the outdoor unit is located, and the compressor is stopped to prevent the indoor unit of the air conditioner from being frozen. The compressor is controlled based on the temperature data of the outdoor unit of the air conditioner, the temperature of the indoor unit is prevented from being too low, the anti-freezing requirement under the condition that the outdoor unit and the indoor unit do not communicate can be met, and the use stability of the air conditioner is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning equipment, and in particular to an air conditioner and its anti-freezing control method, device, computer equipment, computer-readable storage medium and computer program product. Background Art

[0002] Air conditioning equipment usually includes an outdoor unit and an indoor unit, which can control the indoor temperature by transferring heat between indoor and outdoor. When the indoor unit is in cooling mode, the air conditioning evaporator of the indoor unit runs at a lower temperature, and the low pressure of the air conditioning system is low, which may cause frost and freezing, resulting in deterioration of indoor heat exchange and poor cooling effect, and affecting the operation of the outdoor unit.

[0003] When the outdoor unit and the indoor unit can communicate, the evaporator pipe temperature of the indoor unit can be obtained to control the compressor of the outdoor unit and adjust the operation of the air conditioning equipment to avoid frost and freezing. However, at present, there are some air conditioning equipments whose outdoor units and indoor units have inconsistent models or manufacturers, which makes it impossible to establish communication, that is, the outdoor unit cannot obtain the status of the indoor unit, and can only perform low-pressure protection by detecting the low pressure of the outdoor unit system to avoid frost and freezing.

[0004] However, when the compressor is stopped by low-pressure protection to avoid frost without communication, the compressor will stop frequently and open and close repeatedly under long-term low temperature conditions, which will reduce the durability of the compressor and reduce the stability of the air conditioner. Summary of the invention

[0005] Based on this, it is necessary to provide an air conditioner and its anti-freeze control method, device, computer equipment, computer-readable storage medium and computer program product that can ensure the stability of the air conditioner in response to the above technical problems.

[0006] In a first aspect, the present application provides an air conditioner anti-freezing control method, the air conditioner comprising an outdoor unit and an indoor unit that are not communicatively connected to each other, the method comprising:

[0007] Acquire the ambient temperature and the pipe temperature of the condenser of the air conditioner; the condenser is arranged in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located;

[0008] Based on the operating state of the compressor of the outdoor unit, determining the corresponding anti-freezing start condition according to the ambient temperature and the pipeline temperature;

[0009] If the running state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freezing start condition, the compressor is controlled to stop based on the running state of the compressor; the compressor shutdown is used to achieve anti-freezing of the indoor unit of the air conditioner.

[0010] In one embodiment, the step of determining the corresponding anti-freeze start condition based on the operating state of the compressor of the outdoor unit and the ambient temperature and the pipe temperature includes:

[0011] Determine a current temperature difference value, a maximum temperature difference parameter, a first temperature parameter, and a second temperature parameter according to the ambient temperature and the pipeline temperature;

[0012] Based on the operating state of the compressor, an anti-freezing start condition corresponding to the operating state is determined in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter.

[0013] In one embodiment, determining the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter according to the ambient temperature and the pipeline temperature includes:

[0014] Determine a plurality of temperature difference values ​​according to the ambient temperature and the pipeline temperature at different times, wherein the temperature difference values ​​include a current temperature difference value;

[0015] Determining a maximum temperature difference parameter from the temperature difference values ​​based on the operating state of the compressor;

[0016] A first temperature parameter and a second temperature parameter are determined according to the ambient temperature.

[0017] In one embodiment, the operating state of the compressor includes the accumulated operating time and the number of operations, the anti-freeze startup condition includes a first condition, a second condition and a third condition, and the anti-freeze startup condition corresponding to the operating state is determined based on the operating state of the compressor in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter, including:

[0018] If the compressor is operated once, a temperature difference threshold is determined according to the accumulated operating time of the compressor, and a first anti-freeze start condition corresponding to the operating times is determined based on the temperature difference threshold, the current temperature difference value, the maximum temperature difference parameter, the pipeline temperature, the first temperature parameter and the second temperature parameter, wherein the first anti-freeze start condition includes a first condition, a second condition and a third condition;

[0019] If the compressor has been operated more than twice, the anti-freeze start-up condition corresponding to the number of operations is determined in combination with the pipeline temperature, the current temperature difference value, the first temperature parameter and the second temperature parameter, and the anti-freeze start-up condition includes the second condition and the third condition.

[0020] In one embodiment, the method further comprises:

[0021] Based on the accumulated operation time of the compressor, determining a temperature difference threshold value corresponding to the accumulated operation time;

[0022] If the difference between the maximum temperature difference parameter and the current temperature difference value is greater than or equal to the temperature difference threshold, it indicates that the first condition is met.

[0023] In one embodiment, the method further comprises:

[0024] If the pipeline temperature is less than the first temperature parameter within a preset time, it indicates that the second condition is met.

[0025] In one embodiment, the method further comprises:

[0026] If the current temperature difference value is less than the second temperature parameter within the preset time, it indicates that the third condition is met.

[0027] In one embodiment, the operating state includes the number of operations, and the controlling the compressor to stop based on the operating state of the compressor includes:

[0028] Based on the number of times the compressor is run, the compressor and the fan of the outdoor unit are controlled to stop working for a corresponding downtime.

[0029] In a second aspect, the present application further provides an air conditioner anti-freezing control device, the air conditioner comprising an outdoor unit and an indoor unit which are not in communication connection with each other, the device comprising:

[0030] A detection module, used to obtain the ambient temperature and the pipe temperature of the condenser of the air conditioner; the condenser is arranged in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located;

[0031] An analysis module, configured to determine a corresponding anti-freeze start condition based on the operating state of the compressor of the outdoor unit and according to the ambient temperature and the pipeline temperature;

[0032] The judgment execution module is used to control the compressor to stop based on the running state of the compressor if the running state of the compressor, the ambient temperature and the pipeline temperature all meet the anti-freezing start condition; the compressor shutdown is used to achieve anti-freezing of the indoor unit of the air conditioner.

[0033] In a third aspect, the present application further provides an air conditioner, the air conditioner comprising an outdoor unit and an indoor unit that are not communicatively connected to each other, the outdoor unit comprising a condenser, a compressor, a temperature sensing device and an anti-freeze chip, the condenser is connected to the compressor through a pipeline, the temperature sensing device is arranged on the condenser, and the compressor and the temperature sensing device are both connected to the anti-freeze chip;

[0034] The temperature sensing device is used to collect the ambient temperature and the pipe temperature of the condenser, and send them to the anti-freeze chip. The anti-freeze chip is used to control the compressor based on the air conditioning anti-freeze control method described in the above embodiments.

[0035] In a fourth aspect, the present application further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0036] Acquire the ambient temperature and the pipe temperature of the condenser of the air conditioner; the condenser is arranged in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located;

[0037] Based on the operating state of the compressor of the outdoor unit, determining the corresponding anti-freezing start condition according to the ambient temperature and the pipeline temperature;

[0038] If the running state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freezing start condition, the compressor is controlled to stop based on the running state of the compressor; the compressor shutdown is used to achieve anti-freezing of the indoor unit of the air conditioner.

[0039] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0040] Acquire the ambient temperature and the pipe temperature of the condenser of the air conditioner; the condenser is arranged in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located;

[0041] Based on the operating state of the compressor of the outdoor unit, determining the corresponding anti-freezing start condition according to the ambient temperature and the pipeline temperature;

[0042] If the running state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freezing start condition, the compressor is controlled to stop based on the running state of the compressor; the compressor shutdown is used to achieve anti-freezing of the indoor unit of the air conditioner.

[0043] In a sixth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0044] Acquire the ambient temperature and the pipe temperature of the condenser of the air conditioner; the condenser is arranged in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located;

[0045] Based on the operating state of the compressor of the outdoor unit, determining the corresponding anti-freezing start condition according to the ambient temperature and the pipeline temperature;

[0046] If the running state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freezing start condition, the compressor is controlled to stop based on the running state of the compressor; the compressor shutdown is used to achieve anti-freezing of the indoor unit of the air conditioner.

[0047] The above-mentioned air conditioner and its anti-freeze control method, device, computer equipment, computer-readable storage medium and computer program product include obtaining the ambient temperature and the pipe temperature of the condenser of the air conditioner, and determining the corresponding anti-freeze start-up conditions based on the operating state of the compressor of the outdoor unit according to the ambient temperature and the pipe temperature. If the operating state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freeze start-up conditions, the compressor is controlled to stop based on the operating state of the compressor. Among them, the air conditioner includes an outdoor unit and an indoor unit that are not connected to each other by communication, the condenser is arranged on the outdoor unit of the air conditioner, the ambient temperature represents the temperature of the environment in which the outdoor unit is located, and the compressor is stopped to achieve anti-freeze of the indoor unit of the air conditioner. By controlling the compressor based on the temperature data of the outdoor unit of the air conditioner, the temperature of the indoor unit is prevented from being too low, and the anti-freeze demand can be met when there is no communication between the outdoor unit and the indoor unit, while extending the service life of the compressor and improving the stability of the use of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0049] FIG1 is an application environment diagram of an air conditioner anti-freezing control method in one embodiment;

[0050] FIG2 is a schematic flow chart of an air conditioner anti-freezing control method in one embodiment;

[0051] 3 is a flow chart of a step of determining a corresponding anti-freeze start condition according to ambient temperature and pipeline temperature based on the operating state of the compressor of the outdoor unit in one embodiment;

[0052] 4 is a flow chart showing the steps of determining a current temperature difference value, a maximum temperature difference parameter, a first temperature parameter, and a second temperature parameter according to an ambient temperature and a pipeline temperature in one embodiment;

[0053] 5 is a flow chart of a step of determining an anti-freeze start condition corresponding to the operating state based on the operating state of the compressor in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter, and the second temperature parameter in one embodiment;

[0054] FIG6 is a flow chart of an air conditioner anti-freezing control method in another embodiment;

[0055] FIG7 is a structural block diagram of an air conditioner anti-freezing control device in one embodiment;

[0056] FIG. 8 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0058] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0059] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0060] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0062] Air conditioning equipment includes indoor and outdoor units. When the indoor unit is in cooling mode, the air conditioning evaporator of the indoor unit runs at a lower temperature, and the low pressure of the air conditioning system is low, which may cause frost and freezing, resulting in increased damping of the indoor heat exchanger, reduced air volume, and deterioration of indoor heat exchange conditions. The refrigerant cannot evaporate effectively during indoor heat exchange, which not only leads to a decrease in the cooling capacity of the air conditioning equipment and poor cooling effect, but also increases the load on the compressor of the outdoor unit due to the increase in the amount of refrigerant return, affecting the reliability of the compressor.

[0063] In the traditional technology, a communication connection is established between the outdoor unit and the indoor unit, so that the controller of the outdoor unit can obtain the temperature of the indoor unit to detect whether the indoor unit is frosted and frozen, and control the operation of the outdoor unit accordingly to prevent the indoor unit from freezing. However, there are also scenarios where the indoor unit and the outdoor unit cannot establish a communication connection due to the model, manufacturer or missing parts. In the scenario where there is no communication between the outdoor unit and the indoor unit, the outdoor unit cannot obtain the working status of the indoor unit, and can only analyze the working status of the indoor unit by detecting the low pressure of the outdoor unit pipeline, and perform anti-freezing protection for the indoor unit by low-pressure protection. However, under long-term low temperature conditions, the low pressure of the outdoor unit pipeline continues, causing the air conditioner to frequently perform low-pressure protection, which is easy to damage the compressor and reduce the stability of the air conditioner. Therefore, there is an urgent need for a method for realizing anti-freezing protection for the indoor unit of the air conditioner when there is no communication between the indoor unit and the outdoor unit of the air conditioner.

[0064] The air conditioner anti-freezing control method provided in the embodiment of the present application can be applied to the air conditioner as shown in Figure 1. The air conditioner includes an outdoor unit and an indoor unit that are not connected to each other in communication, the outdoor unit includes a condenser 102, a compressor 104, a temperature sensing device 106 and an anti-freezing chip (not shown in the figure), the condenser 102 is connected to the compressor 104 through a pipeline, the temperature sensing device 106 is arranged on the condenser 102, and the compressor 104 and the temperature sensing device 106 are both connected to the anti-freezing chip.

[0065] Among them, the indoor unit includes an evaporator, and the pipeline connects the condenser 102, the compressor 104 and the evaporator, and a loop is formed between the three for the flow of liquid such as refrigerant, so as to realize the heat transfer between indoor and outdoor of the air conditioner. Optionally, a throttling component can be arranged on the pipeline, specifically arranged on the pipeline between the condenser 102 and the evaporator, which can reduce the loss of flowing liquid and accurately control the flow rate. At the same time, in order to improve the efficiency of heat transfer, fans can also be arranged at the evaporator and the condenser 102 to speed up the air flow rate. Furthermore, an internal fan can be arranged at the evaporator, and an external fan can be arranged at the condenser 102.

[0066] The temperature sensing device 106 may include a plurality of temperature sensors, which may be disposed in the pipes of the condenser 102, the housing of the outdoor unit, and other locations of the outdoor unit, and may be used to collect temperatures at different locations. For example, the temperature sensing device 106 includes a pipe temperature sensor and an external environment temperature sensor, wherein the pipe temperature sensor is disposed in the pipes of the condenser 102 and may collect the pipe temperature of the condenser 102; and the external environment temperature sensor is disposed in the housing of the outdoor unit and may collect the ambient temperature of the outdoor unit.

[0067] The temperature sensing device 106 collects the ambient temperature and the pipe temperature of the condenser 102, and sends them to the anti-freeze chip. The anti-freeze chip is used to control the compressor 104 based on the air conditioning anti-freeze control method recorded in each embodiment of the present application to achieve anti-freeze protection for the indoor unit.

[0068] In an exemplary embodiment, as shown in FIG2 , an air conditioner anti-freezing control method is provided, which is described by taking the application of the method to an anti-freezing chip as an example, and includes the following steps 202 to 206. Among them:

[0069] Step 202, obtaining the ambient temperature and the pipe temperature of the air conditioner condenser.

[0070] The condenser is arranged in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located. Both the pipe temperature and the ambient temperature can be collected by the temperature sensing device, specifically, the pipe temperature of the condenser can be collected by the pipe temperature sensor, and the ambient temperature can be collected by the external ambient temperature sensor.

[0071] Specifically, the antifreeze chip can be connected to a temperature sensing device to obtain the ambient temperature and the pipe temperature of the condenser through the temperature sensing device. The temperature sensing device is arranged on the condenser of the outdoor unit or on the pipes around the condenser to collect the pipe temperature of the condenser. It can also be arranged on the inside or outside of the shell of the outdoor unit to collect the ambient temperature of the outdoor unit.

[0072] Step 204 : Based on the operating state of the compressor of the outdoor unit, the corresponding anti-freezing start condition is determined according to the ambient temperature and the pipe temperature.

[0073] Specifically, the anti-freeze chip is connected to the compressor of the outdoor unit, and can obtain the specific operation data such as the operation log of the compressor in real time, and thereby obtain the operating status of the compressor. The operating status of the compressor includes but is not limited to the operating mode of the compressor, the operating time of the compressor, and the number of times the compressor is operated, etc., which are specifically recorded below. It should be noted that the air conditioner anti-freeze control method provided in each embodiment of the present application is used to prevent the indoor unit from freezing. If the indoor unit is in a cooling state, the operating mode of the air conditioner, that is, the operating mode of the compressor, should be a cooling mode.

[0074] The anti-freeze chip determines to enable the corresponding anti-freeze start condition based on the obtained ambient temperature and pipeline temperature, while being able to continuously obtain the operating status of the compressor. In different operating states, different anti-freeze start conditions are determined based on the currently obtained ambient temperature and pipeline temperature.

[0075] For example, when the operating state of the compressor includes the operating mode of cooling mode, the corresponding anti-freezing start condition is determined according to the ambient temperature and the pipe temperature; when the operating state of the compressor includes the operating mode of heating mode, the air conditioning anti-freezing control recorded in this application may not be performed. On the one hand, it is because the indoor unit blows out hot air in the heating mode and no freezing will occur; on the other hand, even if the anti-freezing start condition is still determined according to the ambient temperature and the pipe temperature, the anti-freezing control cannot be continued because there is no anti-freezing start condition that meets the current ambient temperature and the pipe temperature. In the subsequent embodiments of this application, unless otherwise specified, the operating mode of the compressor as cooling mode or non-heating mode (such as air supply mode) will be used as an example for description.

[0076] Furthermore, when the operating state of the compressor includes an operating mode of cooling mode, the anti-freeze start condition is determined according to the currently acquired ambient temperature and pipeline temperature. The anti-freeze start threshold corresponding to the anti-freeze start condition can be determined. Different ambient temperatures and pipeline temperatures correspond to different anti-freeze start thresholds. The anti-freeze chip can perform anti-freeze control on the air conditioner compressor according to the anti-freeze start threshold in the subsequent air conditioner anti-freeze control method.

[0077] Step 206: If the operating state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freeze start-up conditions, the compressor is controlled to stop based on the operating state of the compressor.

[0078] Among them, the compressor shutdown is used to prevent the indoor unit of the air conditioner from freezing. Since the indoor unit of the air conditioner will freeze, the compressor usually works in the cooling mode. As the compressor works in the cooling mode, the indoor unit of the air conditioner is kept at a certain lower temperature to achieve cooling. Therefore, it is necessary to prevent the indoor unit of the air conditioner from freezing, and it is necessary to prevent the temperature of the indoor unit from being too low, that is, the compressor needs to be shut down for a certain period of time to reduce cooling, so that the temperature of the indoor unit rises slightly, and prevents the indoor unit from frosting and freezing.

[0079] Specifically, after the anti-freeze chip determines the anti-freeze start conditions based on the ambient temperature and the pipeline temperature, the anti-freeze chip will comprehensively analyze the operating status of the compressor, the ambient temperature and the pipeline temperature with the anti-freeze start conditions. When it is determined that all three meet the anti-freeze start conditions, the compressor will be controlled to shut down based on the operating status of the compressor.

[0080] Since the operating state of the compressor includes but is not limited to the operating mode of the compressor, the operating time of the compressor, and the number of times the compressor is run, among which the operating time of the compressor may also include the cumulative operating time of the compressor and the continuous operating time of the compressor, the operating state of the compressor in the above steps may be refined. For example, the operating state of the compressor for determining the anti-freeze start condition in step 204 may include the operating mode of the compressor, the number of times the compressor is run, the cumulative operating time of the compressor, and the continuous operating time of the compressor. The operating state of the compressor for controlling the compressor to shut down in step 206 may include the number of times the compressor is run. Among them, the continuous operating time refers to the continuous working time of the compressor, which is cleared after shutdown; the cumulative operating time is the operating time in the entire cooling mode. As long as the air conditioner is still in the cooling mode, the cumulative operating time is only paused when the compressor is shut down, and is not cleared.

[0081] The above-mentioned air conditioner anti-freezing control method includes obtaining the ambient temperature and the pipeline temperature of the condenser of the air conditioner, and determining the corresponding anti-freezing starting conditions based on the operating state of the compressor of the outdoor unit and the ambient temperature and the pipeline temperature. If the operating state of the compressor, the ambient temperature and the pipeline temperature all meet the anti-freezing starting conditions, the compressor is controlled to stop based on the operating state of the compressor. Among them, the air conditioner includes an outdoor unit and an indoor unit that are not connected to each other by communication, the condenser is arranged on the outdoor unit of the air conditioner, the ambient temperature represents the temperature of the environment in which the outdoor unit is located, and the compressor is stopped to achieve the anti-freezing of the indoor unit of the air conditioner. By controlling the compressor based on the temperature data of the outdoor unit of the air conditioner to prevent the temperature of the indoor unit from being too low, the anti-freezing demand can be met when there is no communication between the outdoor unit and the indoor unit, and at the same time, the service life of the compressor is extended and the stability of the use of the air conditioner is improved.

[0082] In an exemplary embodiment, as shown in FIG. 3 , step 204 includes steps 302 to 304 .

[0083] Step 302, determining the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter according to the ambient temperature and the pipeline temperature.

[0084] Specifically, after obtaining the ambient temperature and the pipeline temperature, the antifreeze chip can perform calculations based on the ambient temperature and the pipeline temperature, or can perform calculations based on different calculation relationships or temperature value corresponding tables stored in the antifreeze chip to obtain different temperature data for subsequent calculations. The obtained temperature data includes the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter, and the second temperature parameter.

[0085] Exemplarily, the current temperature difference value can be obtained based on the difference between the ambient temperature and the pipeline temperature, and is the difference between the ambient temperature and the pipeline temperature obtained at the current time. The ambient temperature obtained at the historical time and the pipeline temperature at the corresponding time will both be calculated to obtain the difference, and the difference calculated at the historical time and the difference calculated at the current time is determined to have the largest difference, which is the maximum temperature difference parameter. The first temperature parameter and the second temperature parameter can be calculated based on the ambient temperature and / or pipeline temperature based on the calculation relationship stored in the anti-freeze chip or the temperature value corresponding table and other settings.

[0086] Step 304 , based on the operating state of the compressor, an anti-freeze start condition corresponding to the operating state is determined in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter.

[0087] Specifically, after further data processing of the pipeline temperature and the ambient temperature, temperature data such as the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter, and the second temperature parameter are obtained, and based on the obtained temperature data, the anti-freeze start-up conditions corresponding to the operating state are further combined with the operating state of the compressor to determine. That is, when the operating state of the compressor is different, the anti-freeze start-up conditions matched by the temperature data are also different. In addition, the anti-freeze process for controlling the compressor is also different, and different air conditioning anti-freeze control methods are implemented according to different temperatures and operating states.

[0088] In this embodiment, analysis is performed in combination with the operating status of the air conditioner, the ambient temperature and the pipe temperature, and in particular, different temperature data are obtained by calculating the ambient temperature and the pipe temperature, so as to determine the corresponding anti-freeze start conditions in combination with the operating status of the air conditioner and the temperature data. The anti-freeze start conditions are deeply integrated with the operation of the outdoor unit and the environment in which the outdoor unit is located, thereby avoiding the problem of inaccurate anti-freeze control of the indoor unit when a single ambient temperature or a single outdoor unit is obtained. This is conducive to achieving accurate anti-freeze control and improving the operating stability of the air conditioner.

[0089] In an exemplary embodiment, as shown in FIG. 4 , step 302 includes steps 402 to 406 .

[0090] Step 402, determining a plurality of temperature difference values ​​according to the ambient temperature and the pipeline temperature at different times.

[0091] Specifically, according to the different times corresponding to the obtained ambient temperature and pipeline temperature, the ambient temperature and pipeline temperature are divided according to the time dimension, and the temperature difference value under each time dimension is calculated accordingly. Since the time dimension includes different times in history and the current time, the corresponding calculated temperature difference value includes different temperature difference values ​​in historical time and the temperature difference value at the current time, and the temperature difference value at the current time is marked as the current temperature difference value. Then, the temperature difference value includes the current temperature difference value.

[0092] The anti-freeze chip divides the ambient temperature and pipe temperature at different times based on the time dimension. Since the outdoor unit dissipates the heat transmitted by the indoor unit to the outdoor environment in cooling mode, the pipe temperature is usually higher than the ambient temperature. The anti-freeze chip can calculate the temperature difference by subtracting the ambient temperature from the pipe temperature, and calculate the temperature difference at different times according to the different times.

[0093] Step 404, based on the operating state of the compressor, determine the maximum temperature difference parameter from the temperature difference values.

[0094] Specifically, due to different operating states of the compressor, such as when the compressor has just started, or when the compressor has been stopped for anti-freezing and then restarted, the operating state may easily affect whether the pipeline temperature is accurate. Therefore, the maximum temperature difference parameter may not directly select the temperature difference value with the largest value from all temperature difference values. The anti-freezing chip may also determine the maximum temperature difference parameter from each temperature difference value based on the operating state of the compressor.

[0095] Furthermore, the antifreeze chip can determine the maximum temperature difference parameter from each temperature difference value based on the cumulative operation time of the compressor and the continuous operation time of the compressor. For example, in the refrigeration mode, it is first determined whether the continuous operation time of the compressor reaches the first set continuous operation time. After reaching it, the temperature difference value with the largest value is selected from the temperature difference values ​​after the first set continuous operation time as the maximum temperature difference parameter. If the first set continuous operation time is not reached, it is determined whether the cumulative operation time of the compressor reaches the set cumulative operation time. When the set cumulative operation time is reached and the second set continuous operation time is reached (the first set continuous operation time is greater than the second set continuous operation time), the temperature difference value with the largest value is selected from the temperature difference values ​​after the second set continuous operation time as the maximum temperature difference parameter.

[0096] For example, when the compressor is in cooling mode, if the compressor continues to run for more than ten minutes, the maximum temperature difference parameter is determined from the temperature difference value after ten minutes. If the compressor continues to run for less than ten minutes, the maximum temperature difference parameter is determined from the temperature difference value after the cumulative running time of the compressor reaches 15 minutes and the continuous running time reaches 6 minutes.

[0097] Step 406: determine a first temperature parameter and a second temperature parameter according to the ambient temperature.

[0098] Specifically, the first temperature parameter and the second temperature parameter are determined based on the ambient temperature, and the anti-freeze chip stores a first conversion table for converting the first temperature parameter and a second conversion table for converting the second temperature parameter. The corresponding first temperature parameter and second temperature parameter are determined based on the ambient temperature through different conversion standards. For example, the ambient temperature is divided into different intervals, and the ambient temperature in each interval is respectively obtained by corresponding to the first temperature parameter and the second temperature parameter using the first conversion table and the second conversion table.

[0099] In this embodiment, multiple temperature difference values ​​are calculated based on the ambient temperature and the pipeline temperature to obtain the current temperature difference value, and then the maximum temperature difference parameter is determined from the temperature difference values ​​in combination with the operating status of the compressor, and finally the first temperature parameter and the second temperature parameter are determined according to the ambient temperature. Through the above calculations, the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter can be obtained. The various temperature data obtained are conducive to analyzing the freezing situation of the indoor unit from different angles, and accurately obtaining the corresponding anti-freeze start-up conditions, thereby accurately realizing anti-freeze control and improving the stability of air-conditioning operation.

[0100] In an exemplary embodiment, the operating state of the compressor includes the accumulated operating time and the number of operations, and the anti-freeze start condition includes a first condition, a second condition and a third condition. As shown in FIG5 , step 304 includes steps 502 to 504 .

[0101] Step 502, if the compressor has been run once, determine the temperature difference threshold according to the accumulated running time of the compressor, and determine the first anti-freeze start-up condition corresponding to the number of operations based on the temperature difference threshold, the current temperature difference value, the maximum temperature difference parameter, the pipeline temperature, the first temperature parameter and the second temperature parameter.

[0102] Among them, the first anti-freeze startup condition includes the first condition, the second condition and the third condition, and the three conditions are used to simultaneously limit the compressor from entering the anti-freeze state for the first time. The temperature difference threshold value can be a temperature value stored in the anti-freeze chip, which can be fixed or selected according to the cumulative running time of the compressor. Exemplarily, the temperature difference threshold value is related to the cumulative running time of the compressor, and as the cumulative running time of the compressor increases, the temperature difference of the compressor gradually stabilizes, and the value of the temperature difference threshold value becomes smaller.

[0103] Specifically, if the compressor has run once, it indicates that the compressor has entered anti-freeze mode for the first time. The first condition, the second condition and the third condition must be met at the same time, that is, the first anti-freeze start-up condition, before the compressor will be controlled for anti-freeze; if the first anti-freeze start-up condition cannot be met, that is, the first condition, the second condition and the third condition cannot be met at the same time, the compressor will not be controlled for anti-freeze.

[0104] Furthermore, the three conditions can be analyzed from different perspectives, and the freezing condition of the indoor unit can be predicted or guessed as accurately as possible on the basis of being unable to communicate with the indoor unit. For example, the first condition can be analyzed from the perspective of the cumulative running time of the compressor; the second condition can be analyzed from the perspective of the pipe temperature, and the third condition can be analyzed from the perspective of the temperature difference value. The temperature data and related data that need to be used include the temperature difference threshold, the current temperature difference value, the maximum temperature difference parameter, the pipe temperature, the first temperature parameter, and the second temperature parameter.

[0105] Step 504, if the compressor has been operated for more than two times, the anti-freeze start-up condition corresponding to the number of operations is determined by combining the pipeline temperature, the current temperature difference value, the first temperature parameter and the second temperature parameter.

[0106] Among them, the re-antifreeze start-up condition includes the second condition and the third condition. Since the re-antifreeze start-up condition corresponds to more than two times of operation, it indicates that the compressor has been subjected to antifreeze control. Therefore, the conditions can be reduced when performing the re-antifreeze control, and the analysis is performed from the perspective of the second condition and the third condition. For example, the second condition can be analyzed from the perspective of the pipeline temperature, and the third condition can be analyzed from the perspective of the temperature difference value. The temperature data and related data that need to be used include the current temperature difference value, the pipeline temperature, the first temperature parameter, and the second temperature parameter.

[0107] Furthermore, the operating status of the compressor may also include continuous operation duration. It is necessary to determine the anti-freeze start-up conditions of the compressor after the continuous operation duration of the compressor reaches a period of time (which may be a second set continuous operation duration), for example, after continuous operation for 6 minutes.

[0108] In this embodiment, different anti-freeze start conditions are formulated according to the different number of times the compressor runs, and the various data and parameters obtained in the previous sequence are comprehensively applied to comprehensively and accurately determine the anti-freeze start of the air conditioner, which is beneficial to ensuring the reliability of the anti-freeze start conditions and improving the accuracy of anti-freeze control.

[0109] In an exemplary embodiment, the first condition is related to the accumulated running time of the compressor, the temperature difference threshold and the maximum temperature difference parameter, and the air conditioning anti-freezing control method further includes steps 602 to 604 .

[0110] Step 602: Based on the accumulated operation time of the compressor, determine a temperature difference threshold value corresponding to the accumulated operation time.

[0111] Specifically, based on the different accumulated running time of the compressor, the accumulated running time of the compressor is divided into different time periods. The temperature difference threshold corresponding to each time period is stored in the anti-freeze chip. The anti-freeze chip can determine the temperature difference threshold corresponding to the accumulated running time according to the accumulated running time of the compressor.

[0112] Exemplarily, when the cumulative operating time of the compressor is from the beginning of calculating the maximum temperature difference parameter (for example, the cumulative operating time is 15 minutes) to the cumulative operating time of 20 minutes, the determined temperature difference threshold is 7 degrees Celsius; when the cumulative operating time of the compressor is 20 minutes to 25 minutes, the determined temperature difference threshold is 5 degrees Celsius; when the cumulative operating time of the compressor is 25 minutes to 30 minutes, the determined temperature difference threshold is 4 degrees Celsius; when the cumulative operating time of the compressor is 30 minutes to 35 minutes, the determined temperature difference threshold is 3 degrees Celsius; when the cumulative operating time of the compressor is greater than 35 minutes, the determined temperature difference threshold is 2 degrees Celsius.

[0113] Step 604: If the difference between the maximum temperature difference parameter and the current temperature difference value is greater than or equal to the temperature difference threshold, it indicates that the first condition is met.

[0114] Specifically, the antifreeze chip also calculates the difference between the maximum temperature difference parameter and the current temperature difference value, that is, subtracts the determined maximum temperature difference parameter from the current temperature difference value to obtain the difference. The difference is used to compare with the determined temperature difference threshold, and when the difference is greater than or equal to the temperature difference threshold, it indicates that the first condition is met.

[0115] Optionally, in an exemplary embodiment, the second condition is related to the pipe temperature of the condenser and the first temperature parameter obtained by calculation, and the air conditioning anti-freeze control method also includes step 606: if the pipe temperature is less than the first temperature parameter within a preset time, it indicates that the second condition is met.

[0116] Specifically, the anti-freeze chip stores a first conversion table for converting the first temperature parameter, and based on the ambient temperature, the first temperature parameter can be determined according to the value of the ambient temperature. The second condition is to compare the pipeline temperature with the first temperature parameter, and the pipeline temperature needs to be less than the first temperature parameter and last for a preset time, then the second condition is met. Exemplarily, the preset time can be 30 seconds.

[0117] Optionally, in an exemplary embodiment, the third condition is related to the current temperature difference value and the second temperature parameter, and the air conditioning anti-freeze control method also includes step 608: if the current temperature difference value is less than the second temperature parameter within a preset time, it indicates that the third condition is met.

[0118] Specifically, the anti-freeze chip stores a second conversion table for converting the second temperature parameter. Based on the ambient temperature, the second temperature parameter can be determined according to the value of the ambient temperature. The third condition is to compare the current temperature difference value with the second temperature parameter. If the current temperature difference value is less than the second temperature parameter and lasts for a preset time, the third condition is met. Exemplarily, the preset time can be 30 seconds.

[0119] In this embodiment, the first condition is closely related to the accumulated operating time, and the corresponding temperature difference threshold is determined according to different accumulated operating time to facilitate the judgment of the first condition; the second condition is closely related to the pipeline temperature, and the third condition is closely related to the current temperature difference value. Each condition is established in combination with the actual value, which ensures the accuracy of the judgment and is conducive to the anti-freeze chip to perform accurate anti-freeze control.

[0120] In an exemplary embodiment, the operating state includes the number of operations. As shown in FIG6 , the step 206 of controlling the compressor to stop based on the operating state of the compressor further includes step 702 : based on the number of operations of the compressor, controlling the compressor and the fan of the outdoor unit to stop working for a corresponding downtime.

[0121] After the air conditioner meets the corresponding anti-freeze start-up conditions, the compressor needs to be controlled to shut down to achieve anti-freeze control. Specifically, the anti-freeze chip can not only control the compressor to shut down to achieve anti-freeze control, but also control the outdoor unit's fan to shut down together to achieve anti-freeze control. The duration of the shutdown needs to be determined based on the number of times the compressor runs, and different shutdown times are determined based on different numbers of runs.

[0122] Furthermore, as the number of times the compressor is run increases, the downtime duration also increases until it reaches the single downtime threshold duration. When the compressor is run once, the downtime duration can be determined to be the initial downtime duration, and the compressor is restarted after the downtime duration is reached; when the compressor is run twice, the downtime duration can be determined to be the initial downtime duration plus the superimposed downtime duration, and the compressor is restarted after the downtime duration is reached. Similarly, when the compressor is run n times, the downtime duration can be determined to be the initial downtime duration plus n-1 superimposed downtime durations. Among them, due to the limitation of the single downtime threshold duration, n needs to be no greater than the set number corresponding to the single downtime threshold duration, and the downtime duration needs to be no greater than the single downtime threshold duration.

[0123] For example, when the compressor runs once, the downtime can be determined to be four minutes; when the compressor enters the anti-freeze state twice in a row, that is, the compressor runs twice, the downtime can be determined to be seven minutes; when the compressor runs three times, the downtime can be determined to be ten minutes. As the compressor runs more times, the downtime is extended by three minutes each time until the single downtime threshold is reached, which is 16 minutes.

[0124] In this embodiment, by controlling the compressor and the fan to stop working at different downtimes according to the number of times the compressor is operated, the downtime is extended as the number of operations increases, avoiding repeated starts and stops that shorten the service life of the compressor, which is beneficial to improving the operating stability of the air conditioner. At the same time, while controlling the compressor to stop, the fan of the outdoor unit is also controlled to stop, which can save energy and reduce resource waste.

[0125] Based on the same technical concept, the present application also provides an air conditioner, as shown in Figure 1, the air conditioner includes an outdoor unit and an indoor unit that are not communicated with each other, the outdoor unit includes a condenser 102, a compressor 104, a temperature sensing device 106 and an anti-freeze chip (not shown in the figure), the condenser 102 is connected to the compressor 104 through a pipeline, the temperature sensing device 106 is arranged on the condenser 102, and the compressor 104 and the temperature sensing device 106 are both connected to the anti-freeze chip.

[0126] The indoor unit includes an evaporator, and the pipeline connects the condenser 102, the compressor 104 and the evaporator, and a loop is formed between the three for the flow of liquid such as refrigerant, so as to realize the heat transfer between indoor and outdoor of the air conditioner. Optionally, a throttling component can be arranged on the pipeline to reduce the loss of flowing liquid and accurately control the flow rate. At the same time, in order to improve the efficiency of heat transfer, fans can also be arranged at the evaporator and the condenser 102 to speed up the air flow rate. Furthermore, an internal fan can be arranged at the evaporator, and an external fan can be arranged at the condenser 102.

[0127] The temperature sensing device 106 may include a plurality of temperature sensors, which may be disposed in the pipes of the condenser 102, the housing of the outdoor unit, and other locations of the outdoor unit, and may be used to collect temperatures at different locations. For example, the temperature sensing device 106 includes a pipe temperature sensor and an external environment temperature sensor, wherein the pipe temperature sensor is disposed in the pipes of the condenser 102 and may collect the pipe temperature of the condenser 102; and the external environment temperature sensor is disposed in the housing of the outdoor unit and may collect the ambient temperature of the outdoor unit.

[0128] The temperature sensing device 106 is used to collect the ambient temperature and the pipe temperature of the condenser 102, and send them to the anti-freeze chip. The anti-freeze chip is used to control the compressor 104 based on the air conditioning anti-freeze control method recorded in the above embodiments to achieve anti-freeze protection for the indoor unit.

[0129] In order to better understand the above solution, in combination with the application scenario shown in FIG1 , a detailed explanation is given below in combination with a specific embodiment.

[0130] In one embodiment, an air conditioner includes an outdoor unit and an indoor unit that are not connected to each other in communication, the outdoor unit includes a condenser, a compressor, a temperature sensing device and an anti-freeze chip, wherein the temperature sensing device includes a pipe temperature sensor and an external environment temperature sensor; the indoor unit includes an evaporator, and may also include an evaporator pipe temperature sensor and an internal environment temperature sensor. Furthermore, the outdoor unit may also include an external fan disposed on the condenser, and the indoor unit may also include an internal fan disposed on the evaporator. The air conditioner anti-freeze control method is as follows:

[0131] 1. The anti-freeze chip obtains the ambient temperature and the pipe temperature of the air conditioner's condenser, and can calculate the maximum temperature difference parameter, that is, the maximum value TA, based on the operating status of the compressor in combination with the ambient temperature and the pipe temperature.

[0132] When the air conditioner is turned on in cooling mode, if the compressor runs continuously (cumulative running time) for more than 10 minutes, find the highest value TA of ΔT1 after 10 minutes; if the continuous running is less than 10 minutes, find the highest value TA of ΔT1 after 15 minutes of cumulative running and 6 minutes of continuous running. After recording the highest value TA, record the ΔT1 value at any time afterwards. As long as ΔT1 ≥ TA, the ΔT1 value becomes the new highest value TA. After completing one anti-freeze control, record the highest value TA again according to the above process. ΔT1 is the value of the pipeline temperature minus the ambient temperature, that is, the temperature difference value.

[0133] 2. Anti-freeze starting conditions:

[0134] 1) Enter after anti-freeze exit (anti-freeze start-up conditions again):

[0135] After the compressor restarts and runs continuously for 6 minutes, if conditions B1 and B2 are met at the same time, anti-freeze mode will be entered again.

[0136] 2) Enter after non-anti-freeze recovery (first anti-freeze start condition):

[0137] If one of the five conditions A1 to A5 is met, and conditions B1 and B2 are met at the same time, anti-freeze mode will be entered immediately.

[0138] Among them, conditions A1-A5, condition B1 and condition B2 are as follows:

[0139] A1. When the cumulative running time of the compressor is 15-20 minutes, if TA-ΔT1≥7;

[0140] A2. When the cumulative running time of the compressor is 20-25 minutes, if TA-ΔT1≥5;

[0141] A3. When the cumulative running time of the compressor is 25-30 minutes, if TA-ΔT1≥4;

[0142] A4. When the cumulative running time of the compressor is 30-35 minutes, if TA-ΔT1≥3;

[0143] A5. When the cumulative running time of the compressor exceeds 35 minutes, if TA-ΔT1≥2;

[0144] B1. Detect T ambient temperature < T1 (first temperature parameter) for 30 seconds continuously.

[0145] T1 is taken according to Toutdoor environment (ambient temperature) according to the following Table 1 (first conversion table):

[0146] Table 1

[0147]

[0148] B2. ΔT1<T2 (second temperature parameter) is detected for 30 consecutive seconds.

[0149] T2 is taken according to Toutdoor environment (ambient temperature) according to the following Table 2 (second conversion table):

[0150] Table 2

[0151]

[0152] 3. Anti-freeze exit conditions:

[0153] Exit anti-freeze if the following conditions are met:

[0154] The compressor stops immediately after entering the anti-freeze state for the first time. The compressor restarts 4 minutes after it stops, and the outdoor unit restarts cooling operation.

[0155] The compressor stops immediately after entering the anti-freeze state for the second time in a row. The compressor restarts 4+3 minutes after it stops, and the outdoor unit restarts the cooling operation.

[0156] The compressor stops immediately after entering the anti-freeze state for the third time in a row. The compressor restarts 4+6 minutes after stopping, and the outdoor unit restarts the cooling operation.

[0157] After entering the anti-freeze mode continuously, the compressor stop time is extended by another 3 minutes. The maximum compressor stop time during the anti-freeze period is 16 minutes.

[0158] In the above, the cumulative running time of the compressor refers to the cumulative value of all the running time of the compressor in an anti-freeze cycle (continuous cooling mode of the air conditioner). During an anti-freeze cycle, the compressor stops, the cumulative time is paused, and it is not cleared. The continuous running time of the compressor refers to the continuous running time of a single compressor. If the compressor stops, the time must be reset. The anti-freeze judgment is based on the outdoor unit being in cooling mode. When switching to heating mode, the cumulative running time of the compressor is reset until the next time it is switched to cooling mode and the timing starts. At this time, when judging anti-freeze, it is judged according to the first entry conditions. If the compressor is in air supply mode or a stop command is issued, although the compressor must stop running, the cumulative time will not be reset (the indoor unit has not passed the heating mode and is running at high temperature, and there may still be frost that has not been completely melted, so it will not be reset and will still be judged according to the anti-freeze conditions).

[0159] In this embodiment, the outdoor unit can be controlled to prevent the indoor unit from freezing when there is no communication between the outdoor unit and the indoor unit. This solves the problem that the indoor unit cannot automatically prevent freezing by targeting the fixed-frequency air conditioner without communication. The state of the indoor unit can be intelligently judged without additional detection of the temperature of the indoor unit, and anti-freezing can be entered in time. This is applicable to a wide range of scenarios where the indoor unit and the outdoor unit do not match, removes the communication restrictions between the indoor unit and the outdoor unit, has better adaptability to the market, is conducive to the stable operation of the air conditioner, and prolongs the service life of the compressor.

[0160] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0161] Based on the same inventive concept, the embodiment of the present application also provides an air conditioner anti-freezing control device for implementing the air conditioner anti-freezing control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more air conditioner anti-freezing control device embodiments provided below can refer to the limitations of the air conditioner anti-freezing control method above, and will not be repeated here.

[0162] In an exemplary embodiment, as shown in FIG. 7 , an air conditioner anti-freezing control device is provided, comprising: a detection module 720, an analysis module 740 and a judgment execution module 760, wherein:

[0163] The detection module 720 is used to obtain the ambient temperature and the pipe temperature of the condenser of the air conditioner; the condenser is arranged in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located;

[0164] An analysis module 740 is used to determine a corresponding anti-freeze start condition based on the operating state of the compressor of the outdoor unit, the ambient temperature and the pipe temperature;

[0165] The judgment execution module 760 is used to control the compressor to stop based on the running state of the compressor if the running state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freezing starting conditions; the compressor shutdown is used to achieve anti-freezing of the indoor unit of the air conditioner.

[0166] In one embodiment, the analysis module 740 is also used to determine the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter based on the ambient temperature and the pipeline temperature, and based on the operating state of the compressor, determine the anti-freeze start-up conditions corresponding to the operating state in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter.

[0167] In one embodiment, the analysis module 740 is further configured to determine a plurality of temperature difference values ​​according to the ambient temperature and the pipe temperature at different times, the temperature difference values ​​including the current temperature difference value. Based on the operating state of the compressor, a maximum temperature difference parameter is determined from each temperature difference value, and a first temperature parameter and a second temperature parameter are determined according to the ambient temperature.

[0168] In one embodiment, the operating state of the compressor includes the accumulated operating time and the number of operations, and the anti-freeze start-up condition includes the first condition, the second condition and the third condition. The analysis module 740 is also used to determine the temperature difference threshold according to the accumulated operating time of the compressor if the compressor has been operated once, and determine the first anti-freeze start-up condition corresponding to the number of operations based on the temperature difference threshold, the current temperature difference value, the maximum temperature difference parameter, the pipeline temperature, the first temperature parameter and the second temperature parameter, and the first anti-freeze start-up condition includes the first condition, the second condition and the third condition. If the compressor has been operated more than twice, the second anti-freeze start-up condition corresponding to the number of operations is determined in combination with the pipeline temperature, the current temperature difference value, the first temperature parameter and the second temperature parameter, and the second anti-freeze start-up condition includes the second condition and the third condition.

[0169] In one of the embodiments, the air conditioning anti-freeze control device also includes a first judgment module, which is used to determine the temperature difference threshold corresponding to the accumulated operating time based on the accumulated operating time of the compressor. If the difference between the maximum temperature difference parameter and the current temperature difference value is greater than or equal to the temperature difference threshold, it indicates that the first condition is met.

[0170] In one of the embodiments, the air conditioner anti-freezing control device further includes a second judgment module, which is used to indicate that the second condition is met if the pipeline temperature is less than the first temperature parameter within a preset time.

[0171] In one of the embodiments, the air conditioner anti-freezing control device further includes a third judgment module, which is used to indicate that a third condition is satisfied if the current temperature difference value is less than the second temperature parameter within a preset time.

[0172] In one embodiment, the operating status includes the number of operations, and the judgment execution module 760 is further used to control the corresponding downtime duration of stopping the compressor and the fan of the outdoor unit based on the number of operations of the compressor.

[0173] Each module in the above air conditioner anti-freezing control device can be implemented in whole or in part by software, hardware and a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0174] In an exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be shown in FIG8. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, the memory, and the input / output interface are connected via a system bus, and the communication interface, the display unit, and the input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, an air conditioning anti-freezing control method is implemented. The display unit of the computer device is used to form a visually visible picture, which may be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0175] Those skilled in the art will understand that the structure shown in FIG. 8 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0176] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0177] Obtain the ambient temperature and the pipe temperature of the air conditioner's condenser; the condenser is set in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located;

[0178] Based on the operating state of the compressor of the outdoor unit, the corresponding anti-freeze start condition is determined according to the ambient temperature and the pipe temperature;

[0179] If the operating state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freeze start conditions, the compressor is controlled to shut down based on the operating state of the compressor; the compressor shutdown is used to achieve anti-freeze of the indoor unit of the air conditioner.

[0180] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0181] The current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter are determined according to the ambient temperature and the pipeline temperature. Based on the operating state of the compressor, the anti-freeze start-up conditions corresponding to the operating state are determined in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter.

[0182] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0183] According to the ambient temperature and the pipeline temperature at different times, multiple temperature difference values ​​are determined, including the current temperature difference value. Based on the operating state of the compressor, a maximum temperature difference parameter is determined from each temperature difference value, and a first temperature parameter and a second temperature parameter are determined according to the ambient temperature.

[0184] In one embodiment, the operating state of the compressor includes the accumulated operating time and the number of operations, and the anti-freeze start condition includes a first condition, a second condition and a third condition. When the processor executes the computer program, the following steps are also implemented:

[0185] If the compressor runs once, the temperature difference threshold is determined according to the accumulated running time of the compressor, and the first anti-freeze start condition corresponding to the number of runs is determined based on the temperature difference threshold, the current temperature difference value, the maximum temperature difference parameter, the pipeline temperature, the first temperature parameter and the second temperature parameter. The first anti-freeze start condition includes the first condition, the second condition and the third condition. If the compressor runs more than twice, the second anti-freeze start condition corresponding to the number of runs is determined in combination with the pipeline temperature, the current temperature difference value, the first temperature parameter and the second temperature parameter. The second anti-freeze start condition includes the second condition and the third condition.

[0186] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0187] Based on the accumulated operating time of the compressor, a temperature difference threshold corresponding to the accumulated operating time is determined. If the difference between the maximum temperature difference parameter and the current temperature difference value is greater than or equal to the temperature difference threshold, it indicates that the first condition is met.

[0188] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0189] If the pipeline temperature is less than the first temperature parameter within the preset time, it indicates that the second condition is met.

[0190] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0191] If the current temperature difference value is less than the second temperature parameter within the preset time, it indicates that the third condition is met.

[0192] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0193] Based on the number of times the compressor runs, the corresponding downtime duration of the compressor and the fan of the outdoor unit is controlled to stop working.

[0194] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0195] Obtain the ambient temperature and the pipe temperature of the air conditioner's condenser; the condenser is set in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located;

[0196] Based on the operating state of the compressor of the outdoor unit, the corresponding anti-freeze start condition is determined according to the ambient temperature and the pipe temperature;

[0197] If the operating state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freeze start conditions, the compressor is controlled to shut down based on the operating state of the compressor; the compressor shutdown is used to achieve anti-freeze of the indoor unit of the air conditioner.

[0198] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0199] The current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter are determined according to the ambient temperature and the pipeline temperature. Based on the operating state of the compressor, the anti-freeze start-up conditions corresponding to the operating state are determined in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter.

[0200] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0201] According to the ambient temperature and the pipeline temperature at different times, multiple temperature difference values ​​are determined, including the current temperature difference value. Based on the operating state of the compressor, a maximum temperature difference parameter is determined from each temperature difference value, and a first temperature parameter and a second temperature parameter are determined according to the ambient temperature.

[0202] In one embodiment, the operating state of the compressor includes the accumulated operating time and the number of operations, and the anti-freeze start condition includes the first condition, the second condition and the third condition. When the computer program is executed by the processor, the following steps are also implemented:

[0203] If the compressor runs once, the temperature difference threshold is determined according to the accumulated running time of the compressor, and the first anti-freeze start condition corresponding to the number of runs is determined based on the temperature difference threshold, the current temperature difference value, the maximum temperature difference parameter, the pipeline temperature, the first temperature parameter and the second temperature parameter. The first anti-freeze start condition includes the first condition, the second condition and the third condition. If the compressor runs more than twice, the second anti-freeze start condition corresponding to the number of runs is determined in combination with the pipeline temperature, the current temperature difference value, the first temperature parameter and the second temperature parameter. The second anti-freeze start condition includes the second condition and the third condition.

[0204] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0205] Based on the accumulated operating time of the compressor, a temperature difference threshold corresponding to the accumulated operating time is determined. If the difference between the maximum temperature difference parameter and the current temperature difference value is greater than or equal to the temperature difference threshold, it indicates that the first condition is met.

[0206] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0207] If the pipeline temperature is less than the first temperature parameter within the preset time, it indicates that the second condition is met.

[0208] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0209] If the current temperature difference value is less than the second temperature parameter within the preset time, it indicates that the third condition is met.

[0210] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0211] Based on the number of times the compressor runs, the corresponding downtime duration of the compressor and the fan of the outdoor unit is controlled to stop working.

[0212] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0213] Obtain the ambient temperature and the pipe temperature of the air conditioner's condenser; the condenser is set in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located;

[0214] Based on the operating state of the compressor of the outdoor unit, the corresponding anti-freeze start condition is determined according to the ambient temperature and the pipe temperature;

[0215] If the operating state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freeze start conditions, the compressor is controlled to shut down based on the operating state of the compressor; the compressor shutdown is used to achieve anti-freeze of the indoor unit of the air conditioner.

[0216] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0217] The current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter are determined according to the ambient temperature and the pipeline temperature. Based on the operating state of the compressor, the anti-freeze start-up conditions corresponding to the operating state are determined in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter.

[0218] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0219] According to the ambient temperature and the pipeline temperature at different times, multiple temperature difference values ​​are determined, including the current temperature difference value. Based on the operating state of the compressor, a maximum temperature difference parameter is determined from each temperature difference value, and a first temperature parameter and a second temperature parameter are determined according to the ambient temperature.

[0220] In one embodiment, the operating state of the compressor includes the accumulated operating time and the number of operations, and the anti-freeze start condition includes the first condition, the second condition and the third condition. When the computer program is executed by the processor, the following steps are also implemented:

[0221] If the compressor runs once, the temperature difference threshold is determined according to the accumulated running time of the compressor, and the first anti-freeze start condition corresponding to the number of runs is determined based on the temperature difference threshold, the current temperature difference value, the maximum temperature difference parameter, the pipeline temperature, the first temperature parameter and the second temperature parameter. The first anti-freeze start condition includes the first condition, the second condition and the third condition. If the compressor runs more than twice, the second anti-freeze start condition corresponding to the number of runs is determined in combination with the pipeline temperature, the current temperature difference value, the first temperature parameter and the second temperature parameter. The second anti-freeze start condition includes the second condition and the third condition.

[0222] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0223] Based on the accumulated operating time of the compressor, a temperature difference threshold corresponding to the accumulated operating time is determined. If the difference between the maximum temperature difference parameter and the current temperature difference value is greater than or equal to the temperature difference threshold, it indicates that the first condition is met.

[0224] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0225] If the pipeline temperature is less than the first temperature parameter within the preset time, it indicates that the second condition is met.

[0226] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0227] If the current temperature difference value is less than the second temperature parameter within the preset time, it indicates that the third condition is met.

[0228] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0229] Based on the number of times the compressor runs, the corresponding downtime duration of the compressor and the fan of the outdoor unit is controlled to stop working.

[0230] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0231] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0232] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An air conditioner anti-freezing control method, characterized in that: The air conditioner includes an outdoor unit and an indoor unit which are not in communication connection with each other, and the method includes: Acquire the ambient temperature and the pipe temperature of the condenser of the air conditioner; the condenser is arranged in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located; Based on the operating state of the compressor of the outdoor unit, determining the corresponding anti-freezing start condition according to the ambient temperature and the pipeline temperature; If the running state of the compressor, the ambient temperature and the pipe temperature all meet the anti-freezing start condition, the compressor is controlled to stop based on the running state of the compressor; the compressor shutdown is used to achieve anti-freezing of the indoor unit of the air conditioner.

2. The method according to claim 1, characterized in that The method of determining the corresponding anti-freezing start condition based on the operating state of the compressor of the outdoor unit and according to the ambient temperature and the pipeline temperature includes: Determine a current temperature difference value, a maximum temperature difference parameter, a first temperature parameter, and a second temperature parameter according to the ambient temperature and the pipeline temperature; Based on the operating state of the compressor, an anti-freezing start condition corresponding to the operating state is determined in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter.

3. The method according to claim 2, characterized in that The determining of the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter according to the ambient temperature and the pipeline temperature includes: Determine a plurality of temperature difference values ​​according to the ambient temperature and the pipeline temperature at different times, wherein the temperature difference values ​​include a current temperature difference value; Determining a maximum temperature difference parameter from the temperature difference values ​​based on the operating state of the compressor; A first temperature parameter and a second temperature parameter are determined according to the ambient temperature.

4. The method according to claim 2, characterized in that: The running state of the compressor includes the accumulated running time and the running times, the anti-freezing starting condition includes the first condition, the second condition and the third condition, and the anti-freezing starting condition corresponding to the running state is determined based on the running state of the compressor in combination with the current temperature difference value, the maximum temperature difference parameter, the first temperature parameter and the second temperature parameter, including: If the compressor is operated once, a temperature difference threshold is determined according to the accumulated operating time of the compressor, and a first anti-freeze start condition corresponding to the operating times is determined based on the temperature difference threshold, the current temperature difference value, the maximum temperature difference parameter, the pipeline temperature, the first temperature parameter and the second temperature parameter, wherein the first anti-freeze start condition includes a first condition, a second condition and a third condition; If the compressor has been operated more than twice, the anti-freeze start-up condition corresponding to the number of operations is determined in combination with the pipeline temperature, the current temperature difference value, the first temperature parameter and the second temperature parameter, and the anti-freeze start-up condition includes the second condition and the third condition.

5. The method according to claim 4, characterized in that The method further comprises: Based on the accumulated operation time of the compressor, determining a temperature difference threshold value corresponding to the accumulated operation time; If the difference between the maximum temperature difference parameter and the current temperature difference value is greater than or equal to the temperature difference threshold, it indicates that the first condition is met.

6. The method according to claim 4, characterized in that The method further comprises: If the pipeline temperature is less than the first temperature parameter within a preset time, it indicates that the second condition is met.

7. The method according to claim 4, characterized in that The method further comprises: If the current temperature difference value is less than the second temperature parameter within the preset time, it indicates that the third condition is met.

8. The method according to claim 1, characterized in that The operating state includes the number of operations, and the controlling the compressor to stop based on the operating state of the compressor includes: Based on the number of times the compressor is run, the compressor and the fan of the outdoor unit are controlled to stop working for a corresponding downtime.

9. An air conditioner anti-freezing control device, characterized in that: The air conditioner comprises an outdoor unit and an indoor unit which are not in communication connection with each other, and the device comprises: A detection module, used to obtain the ambient temperature and the pipe temperature of the condenser of the air conditioner; the condenser is arranged in the outdoor unit of the air conditioner, and the ambient temperature represents the temperature of the environment in which the outdoor unit is located; An analysis module, configured to determine a corresponding anti-freeze start condition based on the operating state of the compressor of the outdoor unit and according to the ambient temperature and the pipeline temperature; The judgment execution module is used to control the compressor to stop based on the running state of the compressor if the running state of the compressor, the ambient temperature and the pipeline temperature all meet the anti-freezing start condition; the compressor shutdown is used to achieve anti-freezing of the indoor unit of the air conditioner.

10. An air conditioner, characterized in that: The air conditioner comprises an outdoor unit and an indoor unit which are not in communication connection with each other, the outdoor unit comprises a condenser, a compressor, a temperature sensing device and an antifreeze chip, the condenser is connected with the compressor through a pipeline, the temperature sensing device is arranged on the condenser, and the compressor and the temperature sensing device are both connected to the antifreeze chip; The temperature sensing device is used to collect the ambient temperature and the pipe temperature of the condenser, and send them to the anti-freeze chip, and the anti-freeze chip is used to control the compressor based on the air conditioning anti-freeze control method according to any one of claims 1-8.

11. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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