Air conditioner capable of storing refrigerant and control method

Abstract

The invention provides an air conditioner capable of storing refrigerants and a control method, and is applied to the field of air conditioner control. The method comprises the steps that the air conditioner is controlled to operate in a refrigeration mode, and the high pressure and the exhaust temperature of the air conditioner are obtained; and when the high pressure and the exhaust temperature meet the first trigger condition, a refrigerant storage unit of the air conditioner is controlled to execute refrigerant storage operation, or when the high pressure and the exhaust temperature meet the second trigger condition, the refrigerant storage unit of the air conditioner is controlled to execute refrigerant release operation. According to the air conditioner capable of storing the refrigerant and the control method, the self-adaptive refrigerant storage unit arranged on the outdoor unit is controlled to store and release the refrigerant according to the high pressure and the exhaust temperature of the air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioner control, and particularly to an air conditioner capable of storing refrigerant and a control method therefor. Background Art

[0002] With the continuous improvement of people's living standards and the continuous improvement of the intelligent level of household electrical appliances, intelligent household appliances are becoming more and more popular. Users can use the air conditioner for heating in winter to increase the indoor temperature; they can also use the air conditioner for cooling in summer to lower the indoor temperature.

[0003] When installing an air conditioner, refrigerant needs to be filled. When the refrigerant is overfilled or underfilled, it will affect the refrigeration effect of the system to a certain extent, and in severe cases, the problem of liquid carrying in the compressor suction may occur. In the related art, usually, a manual judgment method is adopted to avoid the situation of overfilling or underfilling the refrigerant.

[0004] However, the manual judgment method not only requires the operator to have certain operation experience, but also may result in misjudgment, which not only affects the normal use of the air conditioner, but also affects the user experience. Summary of the Invention

[0005] The purpose of this application is to provide an air conditioner capable of storing refrigerant and a control method therefor, which are used to control the adaptive refrigerant storage unit provided on the outdoor unit to store and release refrigerant according to the high-pressure pressure and exhaust temperature of the air conditioner.

[0006] In a first aspect, this application provides an air conditioner capable of storing refrigerant, and the air conditioner includes: A refrigerant storage unit and a control unit are provided on the outdoor unit of the air conditioner; the refrigerant storage unit is connected in parallel to the refrigerant main pipeline, and the refrigerant inlet of the refrigerant storage unit is communicated with the refrigerant outlet of the outdoor unit condenser; the control unit is used to control the refrigerant storage and release of the refrigerant storage unit according to the high-pressure pressure and exhaust temperature when the air conditioner is operating in the cooling mode; wherein, the high-pressure pressure is the pressure of the refrigerant pipeline between the oil separator and the four-way valve of the air conditioner; the exhaust temperature is the exhaust temperature of the compressor of the air conditioner.

[0007] Optionally, the refrigerant storage unit includes: a liquid storage tank, a first valve and a second valve; the control unit is electrically connected to the first valve and the second valve, and controls the opening and closing of the first valve and the second valve to store refrigerant into the liquid storage tank or discharge it from the liquid storage tank.

[0008] Optionally, a pressure sensor is provided on the refrigerant pipeline between the oil separator and the four-way valve, and a pressure relief valve is further provided on the liquid storage tank of the refrigerant storage unit. When the detected value of the pressure sensor exceeds a preset threshold, the pressure relief valve opens to relieve the pressure of the liquid storage tank.

[0009] Optionally, a liquid level gauge and a discharge valve are further provided on the liquid storage tank of the refrigerant storage unit. When the liquid level gauge detects that the liquid level exceeds a preset threshold, the discharge valve opens to discharge the refrigerant in the liquid storage tank.

[0010] In a second aspect, the present application provides an air conditioner control method, which is applied to the air conditioner described in the first aspect above. The method includes: Controlling the air conditioner to operate in the cooling mode, and obtaining the high-pressure pressure and the exhaust temperature of the air conditioner; when the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant release operation.

[0011] In this way, the adaptive refrigerant storage unit provided on the outdoor unit is controlled to store and release the refrigerant according to the high-pressure pressure and the exhaust temperature of the air conditioner.

[0012] Optionally, when the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation includes: when the high-pressure pressure is greater than or equal to a first pressure threshold and the exhaust temperature is less than a first temperature threshold, repeatedly performing the refrigerant storage operation until the high-pressure pressure is less than the first pressure threshold, and / or the exhaust temperature is greater than or equal to the first temperature threshold; wherein, the refrigerant storage operation includes: determining a first opening duration based on a first pressure difference and a first temperature difference, and controlling the opening of the first valve according to the first opening duration; the first pressure difference is the difference between the high-pressure pressure and the first pressure threshold; the first temperature difference is the difference between the exhaust temperature and the first temperature threshold.

[0013] Optionally, determining the first opening duration based on the first pressure difference and the first temperature difference includes: performing a weighted calculation on the first pressure difference and the second pressure difference based on the weight corresponding to the first pressure difference and the weight corresponding to the first temperature difference to obtain a first liquid storage operation value; calculating a liquid storage coefficient according to the ratio of the first liquid storage operation value to a preset liquid storage operation value corresponding to a preset opening duration, and calculating the first opening duration based on the product of the liquid storage coefficient and the preset opening duration.

[0014] Thus, when there is too much refrigerant in the system, the first valve can be opened to store the refrigerant in the liquid storage tank of the refrigerant storage unit.

[0015] Optionally, when the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation includes: when the high-pressure pressure is less than the second pressure threshold and the exhaust temperature is greater than or equal to the second temperature threshold, repeatedly performing the refrigerant release operation until the high-pressure pressure is greater than or equal to the second pressure threshold, and / or the exhaust temperature is less than the second temperature threshold; wherein, the refrigerant release storage operation includes: determining a second opening duration based on a second pressure difference and a second temperature difference, and controlling the opening of the second valve according to the second opening duration; the second pressure difference is: the difference between the high-pressure pressure and the second pressure threshold; the second temperature difference is: the difference between the exhaust temperature and the second temperature threshold.

[0016] Optionally, determining the second opening duration based on the second pressure difference and the second temperature difference includes: performing a weighted calculation on the second pressure difference and the second pressure difference based on the weight corresponding to the second pressure difference and the weight corresponding to the second temperature difference to obtain a second liquid storage operation value; calculating a liquid storage coefficient according to the ratio of the second liquid storage operation value to the preset liquid storage operation value corresponding to the preset opening duration, and calculating the second opening duration based on the product of the liquid storage coefficient and the preset opening duration.

[0017] Thus, when there is too little refrigerant in the system, the second valve can be opened to store the refrigerant in the liquid storage tank of the refrigerant storage unit.

[0018] In a third aspect, the present application further provides an air conditioner control device, which is applied to the air conditioner described in the first aspect above. The device includes: A control module, configured to control the air conditioner to operate in a cooling mode; an acquisition module, configured to acquire the high-pressure pressure and the exhaust temperature of the air conditioner; the control module is further configured to, when the high-pressure pressure and the exhaust temperature meet the first trigger condition, control the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or, when the high-pressure pressure and the exhaust temperature meet the second trigger condition, control the refrigerant storage unit of the air conditioner to perform a refrigerant release operation.

[0019] Optionally, the control unit is specifically configured to, when the high-pressure pressure is greater than or equal to the first pressure threshold and the exhaust temperature is less than the first temperature threshold, repeatedly execute the refrigerant storage operation until the high-pressure pressure is less than the first pressure threshold, and / or the exhaust temperature is greater than or equal to the first temperature threshold; wherein, the refrigerant storage operation includes: determining a first opening duration based on a first pressure difference and a first temperature difference, and controlling the opening of the first valve according to the first opening duration; the first pressure difference is the difference between the high-pressure pressure and the first pressure threshold; the first temperature difference is the difference between the exhaust temperature and the first temperature threshold.

[0020] Optionally, the control unit is specifically configured to perform a weighted calculation on the first pressure difference and the second pressure difference based on the weight corresponding to the first pressure difference and the weight corresponding to the first temperature difference to obtain a first liquid storage operation value; the control unit is further specifically configured to calculate a liquid storage coefficient according to the ratio of the first liquid storage operation value to the preset liquid storage operation value corresponding to the preset opening duration, and calculate the first opening duration based on the product of the liquid storage coefficient and the preset opening duration.

[0021] Optionally, the control unit is specifically configured to, when the high-pressure pressure is less than the second pressure threshold and the exhaust temperature is greater than or equal to the second temperature threshold, repeatedly execute the refrigerant release operation until the high-pressure pressure is greater than or equal to the second pressure threshold, and / or the exhaust temperature is less than the second temperature threshold; wherein, the refrigerant release operation includes: determining a second opening duration based on a second pressure difference and a second temperature difference, and controlling the opening of the second valve according to the second opening duration; the second pressure difference is the difference between the high-pressure pressure and the second pressure threshold; the second temperature difference is the difference between the exhaust temperature and the second temperature threshold.

[0022] Optionally, the control unit is specifically configured to perform a weighted calculation on the second pressure difference and the second pressure difference based on the weight corresponding to the second pressure difference and the weight corresponding to the second temperature difference to obtain a second liquid storage operation value; the control unit is further specifically configured to calculate a liquid storage coefficient according to the ratio of the second liquid storage operation value to the preset liquid storage operation value corresponding to the preset opening duration, and calculate the second opening duration based on the product of the liquid storage coefficient and the preset opening duration.

[0023] This application also provides a computer program product, including a computer program / instructions, which, when executed by a processor, implement the steps of the air conditioner control method as described in any one of the above.

[0024] The present application further provides an electronic device, which may be an air conditioner. The air conditioner includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the air conditioner control method described in any one of the above are implemented.

[0025] The present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the air conditioner control method described in any one of the above are implemented.

[0026] The present application provides an air conditioner capable of storing refrigerant and a control method. A refrigerant storage unit and a control unit are provided on the outdoor unit of the air conditioner; the refrigerant storage unit is connected in parallel to the main refrigerant pipeline, and the refrigerant storage unit is arranged behind the outdoor unit condenser in the refrigerant flow direction in the cooling mode; the control unit is used to control the refrigerant storage and release of the refrigerant storage unit according to the high-pressure pressure and the exhaust temperature when the air conditioner is operating in the cooling mode. The method includes: controlling the air conditioner to operate in the cooling mode, and obtaining the high-pressure pressure and the exhaust temperature of the air conditioner; when the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant release operation. In this way, the refrigerant storage and release of the adaptive refrigerant storage unit provided on the outdoor unit are controlled according to the high-pressure pressure and the exhaust temperature of the air conditioner. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic diagram of the operating principle of the air conditioner provided by the present application; Figure 2 It is a schematic diagram of the structure of the air conditioner provided by the present application; Figure 3 It is a schematic flowchart of the air conditioner control method provided by the present application; Figure 4 It is a schematic diagram of the structure of the air conditioner control device provided by the present application; Figure 5 It is a schematic diagram of the structure of the electronic device provided by the present application. Detailed Embodiments

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following will clearly and completely describe the technical solutions in this application in conjunction with the accompanying drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.

[0030] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means that the related objects before and after are in an "or" relationship.

[0031] The following will describe in detail the operating principle of the air conditioner involved in the embodiments of this application: As Figure 1 shown, the compressor compresses the refrigerant (refrigerant medium), and transports it to the condenser through a pipeline. The high-temperature and high-pressure gaseous refrigerant releases heat in the condenser and becomes a medium-temperature and high-pressure liquid refrigerant. Then, the medium-temperature and high-pressure liquid refrigerant becomes a low-temperature and low-pressure liquid refrigerant after being depressurized by a capillary tube (throttling unit). The low-temperature and low-pressure liquid refrigerant is transported to the evaporator and evaporates from a liquid into a gas, and absorbs a large amount of heat during the evaporation process. Finally, the low-temperature and low-pressure gaseous refrigerant in the evaporator is transported to the compressor to participate in the next cycle. When the air conditioner is cooling, the heat exchanger of the outdoor unit is the condenser, and the heat exchanger of the indoor unit is the evaporator; conversely, when the air conditioner is heating, the heat exchanger of the outdoor unit is the evaporator, and the heat exchanger of the indoor unit is the condenser.

[0032] In the related art, after the refrigerant is filled in a multi-connected system, it will be judged manually. If there is too much refrigerant, part of the refrigerant will be manually released. Then, the judgment is made again, and the manual operation steps are repeated multiple times until the refrigerant amount is in a reasonable state. However, manual operation not only requires relatively high experience, but may also be repeated multiple times, resulting in a long debugging system operation time and affecting the refrigeration effect, giving users a bad experience.

[0033] In view of the above technical problems existing in the related art, the embodiments of this application provide an air conditioner capable of storing refrigerant, as Figure 2As shown in the figure, a refrigerant storage unit and a control unit are provided on the outdoor unit of the air conditioner; a refrigerant storage unit and a control unit are provided on the outdoor unit of the air conditioner; the refrigerant storage unit is connected in parallel to the main refrigerant pipeline, and the refrigerant inlet of the refrigerant storage unit is communicated with the refrigerant outlet of the outdoor unit condenser. The refrigerant storage unit is connected in parallel to the main refrigerant pipeline, and the refrigerant storage unit is arranged behind the outdoor unit condenser in the refrigerant flow direction in the cooling mode; the control unit is used to control the refrigerant storage and release of the refrigerant storage unit according to the high-pressure pressure and the exhaust temperature when the air conditioner is operating in the cooling mode. Wherein, the high-pressure pressure is the pressure of the refrigerant pipeline between the oil separator and the four-way valve of the air conditioner; the exhaust temperature is the exhaust temperature of the compressor of the air conditioner.

[0034] Exemplarily, as Figure 2 shown, the refrigerant storage unit includes: a liquid storage tank Z, a first valve G1 and a second valve G2; the control unit is electrically connected to the first valve and the second valve, and stores the refrigerant into the liquid storage tank or discharges it from the liquid storage tank by controlling the opening and closing of the first valve and the second valve. The control unit is specifically used to store the refrigerant into the liquid storage tank Z by controlling the first valve G1 when performing the refrigerant storage operation; the control unit is specifically used to discharge the refrigerant from the liquid storage tank Z by controlling the second valve G2 when performing the refrigerant release operation.

[0035] It should be noted that the above-mentioned liquid storage tank Z can be a vacuum liquid storage tank to avoid being affected by the gas pressure in the liquid storage tank during refrigerant storage and discharge, and to avoid air entering the refrigerant pipeline.

[0036] Exemplarily, as Figure 2 shown, a pressure sensor Pd for detecting the high-pressure pressure is provided on the refrigerant pipeline between the oil separator and the four-way valve; a pressure relief valve F1 and a discharge valve F2 are also provided on the liquid storage tank of the refrigerant storage unit; the pressure relief valve F1 is used to relieve the pressure of the liquid storage tank when the pressure in the liquid storage tank exceeds a preset pressure threshold; the discharge valve F2 is used to discharge the refrigerant in the liquid storage tank when the refrigerant liquid level in the liquid storage tank exceeds a preset liquid level height threshold; when the detection value of the pressure sensor exceeds the preset threshold, the pressure relief valve opens to relieve the pressure of the liquid storage tank.

[0037] Exemplarily, as Figure 2 shown, a liquid level gauge and a discharge valve are also provided on the liquid storage tank of the refrigerant storage unit. When the liquid level gauge detects that the liquid level exceeds the preset threshold, the discharge valve opens to discharge the refrigerant in the liquid storage tank.

[0038] The improved air conditioner provided by the embodiment of the present application can automatically determine whether there is an excessive refrigerant phenomenon in the system by setting a set of adaptive refrigerant storage units. If so, it will enter the program instruction for automatically recovering the refrigerant, and adjust the electric ball valve through preset parameters to achieve automatic recovery. When the refrigerant is insufficient, the refrigerant will also be automatically released without manual participation, saving time and effort.

[0039] The following will combine the drawings and specifically illustrate the air conditioner control method provided by the embodiment of the present application through specific embodiments and their application scenarios.

[0040] As Figure 3 shown, an air conditioner control method provided by the embodiment of the present application may include the following steps 301 and 302: Step 301: Control the air conditioner to operate in the cooling mode, and obtain the high-pressure pressure and the exhaust temperature of the air conditioner.

[0041] It should be noted that in the embodiment of the present application, since the refrigerant storage unit is arranged behind the outdoor unit condenser in the refrigerant flow direction in the cooling mode, it is necessary to perform the refrigerant storage operation and the refrigerant release operation in the cooling mode.

[0042] Exemplarily, as Figure 2 shown, the high-pressure pressure can be obtained through the pressure sensor Pd arranged on the refrigerant pipeline between the oil separator and the four-way valve, and the exhaust temperature can be obtained through the temperature sensor Td arranged at the compressor exhaust port.

[0043] Step 302: When the high-pressure pressure and the exhaust temperature meet the first trigger condition, control the refrigerant storage unit of the air conditioner to perform the refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, control the refrigerant storage unit of the air conditioner to perform the refrigerant release operation.

[0044] Exemplarily, since an excessive amount of refrigerant will cause the high-pressure pressure to rise and the exhaust temperature to decrease, and a small amount of refrigerant will cause the high-pressure pressure to decrease and the exhaust temperature to rise, it is possible to determine whether the refrigerant in the current system is excessive or insufficient according to the high-pressure pressure and the exhaust temperature.

[0045] Specifically, for the case of excessive refrigerant in the system, the above step 302 may further include the following step 302a: Step 302a: When the high-pressure pressure is greater than or equal to the first pressure threshold and the exhaust temperature is less than the first temperature threshold, repeatedly execute the refrigerant storage operation until the high-pressure pressure is less than the first pressure threshold and / or the exhaust temperature is greater than or equal to the first temperature threshold.

[0046] Wherein, the refrigerant storage operation includes: determining a first opening duration based on a first pressure difference and a first temperature difference, and controlling the opening of the first valve according to the first opening duration; the first pressure difference is the difference between the high-pressure pressure and the first pressure threshold; the first temperature difference is the difference between the exhaust temperature and the first temperature threshold.

[0047] Exemplarily, when there is too much refrigerant in the system, the first valve can be opened to store the refrigerant in the liquid storage tank of the refrigerant storage unit. At the same time, in order to avoid too much refrigerant being stored at one time, resulting in too little refrigerant in the system, it is also necessary to control the opening duration of the first valve.

[0048] It should be noted that when the refrigerant storage operation is performed, the second valve is always in a closed state. At the same time, in order to avoid excessive pressure in the liquid storage tank, as Figure 2 shown, a pressure relief valve is also provided on the liquid storage tank. When the pressure in the liquid storage tank is too high, the pressure can be relieved through the pressure relief valve. In addition, a liquid level sensor (i.e., the above-mentioned liquid level gauge) is also provided on the liquid storage tank. When it is detected that the liquid level height in the liquid storage tank exceeds the preset height threshold, a reminder is given so that the operator can discharge the excess refrigerant through the discharge valve.

[0049] Specifically, step 302a above may further include the following steps 302a1 and 302a2: Step 302a1: Perform weighted calculation on the first pressure difference and the second pressure difference based on the weight corresponding to the first pressure difference and the weight corresponding to the first temperature difference to obtain a first liquid storage operation value.

[0050] Step 302a2: Calculate a liquid storage coefficient according to the ratio of the first liquid storage operation value to the preset liquid storage operation value corresponding to the preset opening duration, and calculate the first opening duration based on the product of the liquid storage coefficient and the preset opening duration.

[0051] Exemplarily, when the calculated liquid storage operation value is large, it is necessary to control the first valve to open for a longer duration to store more refrigerant in the liquid storage tank; when the calculated liquid storage operation value is small, it is necessary to control the first valve to open for a shorter duration to store a small amount of refrigerant in the liquid storage tank.

[0052] Specifically, for the situation of too little refrigerant in the system, step 302 above may further include the following step 302b: Step 302b: Under the condition that the high-pressure pressure is less than the second pressure threshold and the exhaust temperature is greater than or equal to the second temperature threshold, repeatedly perform the refrigerant release operation until the high-pressure pressure is greater than or equal to the second pressure threshold, and / or the exhaust temperature is less than the second temperature threshold.

[0053] Among them, the cold release storage operation includes: determining a second opening duration based on a second pressure difference and a second temperature difference, and controlling the opening of the second valve according to the second opening duration; the second pressure difference is: the difference between the high pressure and the second pressure threshold; the second temperature difference is: the difference between the exhaust temperature and the second temperature threshold.

[0054] Exemplarily, when there is too little refrigerant in the system, the second valve can be opened to store the refrigerant in the liquid storage tank of the refrigerant storage unit. At the same time, in order to avoid too much refrigerant being stored at one time, resulting in too little refrigerant in the system, it is also necessary to control the opening duration of the first valve. It should be noted that when the refrigerant release operation is performed, the first valve is always in the closed state.

[0055] Specifically, step 302b above may further include the following step 302b1 and step 302b2: Step 302b1, perform weighted calculation on the second pressure difference and the second pressure difference based on the weight corresponding to the second pressure difference and the weight corresponding to the second temperature difference to obtain a second liquid storage operation value.

[0056] Step 302b2, calculate a liquid storage coefficient according to the ratio of the second liquid storage operation value to the preset liquid storage operation value corresponding to the preset opening duration, and calculate the second opening duration based on the product of the liquid storage coefficient and the preset opening duration.

[0057] Exemplarily, when the calculated liquid storage operation value is large, it is necessary to control the second valve to open for a longer duration to release more refrigerant into the system; when the calculated liquid storage operation value is small, it is necessary to control the second valve to open for a shorter duration to release a small amount of refrigerant into the system.

[0058] In this way, by setting up a set of adaptive refrigerant storage units, it can automatically determine whether there is an excessive refrigerant phenomenon in the system. If so, it will enter the program instruction for automatically recovering the refrigerant, and adjust the electric ball valve through preset parameters to achieve automatic recovery. When the refrigerant is insufficient, the refrigerant will also be automatically released, without manual participation, saving time and effort.

[0059] The air conditioner control method provided by the embodiment of the present application is applied to an air conditioner. A refrigerant storage unit and a control unit are provided on the outdoor unit of the air conditioner; the refrigerant storage unit is connected in parallel to the main refrigerant pipeline, and the refrigerant storage unit is arranged behind the outdoor unit condenser in the refrigerant flow direction in the cooling mode; the control unit is used to control the refrigerant storage and release of the refrigerant storage unit according to the high-pressure pressure and the exhaust temperature when the air conditioner is operating in the cooling mode. The method includes: controlling the air conditioner to operate in the cooling mode, and obtaining the high-pressure pressure and the exhaust temperature of the air conditioner; when the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant release operation. In this way, the refrigerant storage and release are controlled by the adaptive refrigerant storage unit provided on the outdoor unit according to the high-pressure pressure and the exhaust temperature of the air conditioner.

[0060] It should be noted that for the air conditioner control method provided by the embodiment of the present application, the execution subject can be an air conditioner control device, or a control module for executing the air conditioner control method in the air conditioner control device. In the embodiment of the present application, the air conditioner control device provided by the embodiment of the present application is described by taking the air conditioner control device as an example to execute the air conditioner control method.

[0061] It should be noted that in the embodiment of the present application, the air conditioner control methods shown in the above respective method drawings are all exemplarily described by taking one drawing in the embodiment of the present application as an example. Specifically in implementation, the air conditioner control methods shown in the above respective method drawings can also be implemented in combination with any other combinable drawings schemed in the above embodiments, which will not be elaborated here.

[0062] The air conditioner control device provided by the present application will be described below, and the following description can be mutually referred to the air conditioner control method described above.

[0063] Figure 4 It is a schematic structural diagram of an air conditioner control device provided by an embodiment of the present application, as Figure 4 shown, and specifically includes: A control module 401, configured to control the air conditioner to operate in the cooling mode; an acquisition module 402, configured to acquire the high-pressure pressure and the exhaust temperature of the air conditioner; the control module 401 is further configured to, when the high-pressure pressure and the exhaust temperature meet the first trigger condition, control the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, control the refrigerant storage unit of the air conditioner to perform a refrigerant release operation.

[0064] Optionally, the control unit is specifically configured to, when the high-pressure pressure is greater than or equal to the first pressure threshold and the exhaust temperature is less than the first temperature threshold, repeatedly execute the refrigerant storage operation until the high-pressure pressure is less than the first pressure threshold, and / or the exhaust temperature is greater than or equal to the first temperature threshold; wherein, the refrigerant storage operation includes: determining a first opening duration based on a first pressure difference and a first temperature difference, and controlling the opening of the first valve according to the first opening duration; the first pressure difference is the difference between the high-pressure pressure and the first pressure threshold; the first temperature difference is the difference between the exhaust temperature and the first temperature threshold.

[0065] Optionally, the control unit is specifically configured to perform a weighted calculation on the first pressure difference and the second pressure difference based on the weight corresponding to the first pressure difference and the weight corresponding to the first temperature difference to obtain a first liquid storage operation value; the control unit is further specifically configured to calculate a liquid storage coefficient according to the ratio of the first liquid storage operation value to the preset liquid storage operation value corresponding to the preset opening duration, and calculate the first opening duration based on the product of the liquid storage coefficient and the preset opening duration.

[0066] Optionally, the control unit is specifically configured to, when the high-pressure pressure is less than the second pressure threshold and the exhaust temperature is greater than or equal to the second temperature threshold, repeatedly execute the refrigerant release operation until the high-pressure pressure is greater than or equal to the second pressure threshold, and / or the exhaust temperature is less than the second temperature threshold; wherein, the refrigerant release operation includes: determining a second opening duration based on a second pressure difference and a second temperature difference, and controlling the opening of the second valve according to the second opening duration; the second pressure difference is the difference between the high-pressure pressure and the second pressure threshold; the second temperature difference is the difference between the exhaust temperature and the second temperature threshold.

[0067] Optionally, the control unit is specifically configured to perform a weighted calculation on the second pressure difference and the second pressure difference based on the weight corresponding to the second pressure difference and the weight corresponding to the second temperature difference to obtain a second liquid storage operation value; the control unit is further specifically configured to calculate a liquid storage coefficient according to the ratio of the second liquid storage operation value to the preset liquid storage operation value corresponding to the preset opening duration, and calculate the second opening duration based on the product of the liquid storage coefficient and the preset opening duration.

[0068] The air conditioner control device provided by this application is applied to an air conditioner. A refrigerant storage unit and a control unit are provided on the outdoor unit of the air conditioner; the refrigerant storage unit is connected in parallel to the main refrigerant pipeline, and the refrigerant storage unit is arranged behind the outdoor unit condenser in the refrigerant flow direction in the cooling mode; the control unit is used to control the refrigerant storage and release of the refrigerant storage unit according to the high-pressure pressure and the exhaust temperature when the air conditioner is operating in the cooling mode. The method includes: controlling the air conditioner to operate in the cooling mode, and obtaining the high-pressure pressure and the exhaust temperature of the air conditioner; when the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant release operation. In this way, the refrigerant storage and release are controlled by the adaptive refrigerant storage unit provided on the outdoor unit according to the high-pressure pressure and the exhaust temperature of the air conditioner.

[0069] Figure 5 An example of a schematic physical structure diagram of an electronic device, and the electronic device can be the above-mentioned air conditioner, such as Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530, and a communication bus 540. Among them, the processor 510, the communication interface 520, and the memory 530 communicate with each other through the communication bus 540. The processor 510 can call the logical instructions in the memory 530 to execute the air conditioner control method, and the method includes: controlling the air conditioner to operate in the cooling mode, and obtaining the high-pressure pressure and the exhaust temperature of the air conditioner; when the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant release operation. In this way, the refrigerant storage and release are controlled by the adaptive refrigerant storage unit provided on the outdoor unit according to the high-pressure pressure and the exhaust temperature of the air conditioner.

[0070] In addition, when the logical instructions in the above-mentioned memory 530 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0071] On the other hand, the present application also provides a computer program product. The computer program product includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the air conditioner control method provided by the above-mentioned various methods. The method includes: controlling the air conditioner to operate in a cooling mode and obtaining the high-pressure pressure and exhaust temperature of the air conditioner; when the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant release operation. In this way, the adaptive refrigerant storage unit provided on the outdoor unit is controlled to store and release refrigerant according to the high-pressure pressure and exhaust temperature of the air conditioner.

[0072] On another aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is implemented to execute the air conditioner control method provided by the above-mentioned various methods. The method includes: controlling the air conditioner to operate in a cooling mode and obtaining the high-pressure pressure and exhaust temperature of the air conditioner; when the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant release operation. In this way, the adaptive refrigerant storage unit provided on the outdoor unit is controlled to store and release refrigerant according to the high-pressure pressure and exhaust temperature of the air conditioner.

[0073] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0074] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or equivalently replace some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present application.

Claims

1. An air conditioner, characterized in that, A refrigerant storage unit and a control unit are provided on the outdoor unit of the air conditioner; the refrigerant storage unit is connected in parallel to the main refrigerant pipeline, and the refrigerant inlet of the refrigerant storage unit is communicated with the refrigerant outlet of the outdoor unit condenser; The control unit is used to control the storage and release of the refrigerant in the refrigerant storage unit according to the high-pressure pressure and the exhaust temperature when the air conditioner is operating in the cooling mode; Wherein, the high-pressure pressure is the pressure of the refrigerant pipeline between the oil separator and the four-way valve of the air conditioner; the exhaust temperature is the exhaust temperature of the compressor of the air conditioner.

2. The air conditioner according to claim 1, characterized in that, The refrigerant storage unit includes: a liquid storage tank, a first valve and a second valve; The control unit is electrically connected to the first valve and the second valve, and controls the opening and closing of the first valve and the second valve to store the refrigerant in the liquid storage tank or discharge it from the liquid storage tank.

3. The air conditioner according to claim 1 or 2, characterized in that, A pressure sensor is provided on the refrigerant pipeline between the oil separator and the four-way valve, and a pressure relief valve is also provided on the liquid storage tank of the refrigerant storage unit. When the detected value of the pressure sensor exceeds a preset threshold, the pressure relief valve opens to relieve the pressure of the liquid storage tank.

4. The air conditioner according to any one of claims 1 to 3, characterized in that, A liquid level gauge and a discharge valve are also provided on the liquid storage tank of the refrigerant storage unit. When the liquid level gauge detects that the liquid level exceeds a preset threshold, the discharge valve opens to discharge the refrigerant in the liquid storage tank.

5. An air conditioner control method, characterized in that, Applied to the air conditioner according to any one of claims 1 to 4, the method includes: Controlling the air conditioner to operate in the cooling mode, and obtaining the high-pressure pressure and the exhaust temperature of the air conditioner; When the high-pressure pressure and the exhaust temperature meet the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation, or when the high-pressure pressure and the exhaust temperature meet the second trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant release operation.

6. The method according to claim 5, wherein The controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation when the high-pressure pressure and the exhaust temperature meet the first trigger condition includes: When the high-pressure pressure is greater than or equal to the first pressure threshold and the exhaust temperature is less than the first temperature threshold, the refrigerant storage operation is cyclically performed until the high-pressure pressure is less than the first pressure threshold, and / or the exhaust temperature is greater than or equal to the first temperature threshold; Wherein, the refrigerant storage operation includes: determining a first opening duration based on a first pressure difference and a first temperature difference, and controlling the opening of the first valve according to the first opening duration; the first pressure difference is: the difference between the high-pressure pressure and the first pressure threshold; the first temperature difference is: the difference between the exhaust temperature and the first temperature threshold.

7. The method according to claim 6, wherein The determining the first opening duration based on the first pressure difference and the first temperature difference includes: Performing a weighted calculation on the first pressure difference and the second pressure difference based on the weight corresponding to the first pressure difference and the weight corresponding to the first temperature difference to obtain a first liquid storage operation value; Calculate a liquid storage coefficient based on the ratio of the first liquid storage operation value to the preset liquid storage operation value corresponding to the preset opening duration, and calculate the first opening duration based on the product of the liquid storage coefficient and the preset opening duration.

8. The method according to claim 5, wherein When the high-pressure pressure and the exhaust temperature satisfy the first trigger condition, controlling the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation includes: When the high-pressure pressure is less than the second pressure threshold and the exhaust temperature is greater than or equal to the second temperature threshold, repeatedly perform the refrigerant release operation until the high-pressure pressure is greater than or equal to the second pressure threshold, and / or the exhaust temperature is less than the second temperature threshold; Among them, the cold release storage operation includes: determining a second opening duration based on a second pressure difference and a second temperature difference, and controlling the opening of the second valve according to the second opening duration; the second pressure difference is: the difference between the high-pressure pressure and the second pressure threshold; the second temperature difference is: the difference between the exhaust temperature and the second temperature threshold.

9. The method according to claim 8, wherein The determining the second opening duration based on the second pressure difference and the second temperature difference includes: Performing a weighted calculation on the second pressure difference and the second pressure difference based on the weight corresponding to the second pressure difference and the weight corresponding to the second temperature difference to obtain a second liquid storage operation value; Calculate a liquid storage coefficient based on the ratio of the second liquid storage operation value to the preset liquid storage operation value corresponding to the preset opening duration, and calculate the second opening duration based on the product of the liquid storage coefficient and the preset opening duration.

10. An air conditioner control device, characterized in that, Applied to the air conditioner according to any one of claims 1 to 4, the device includes: A control module for controlling the air conditioner to operate in a cooling mode; An acquisition module for acquiring the high-pressure pressure and the exhaust temperature of the air conditioner; The control module is further configured to control the refrigerant storage unit of the air conditioner to perform a refrigerant storage operation when the high-pressure pressure and the exhaust temperature satisfy the first trigger condition, or to control the refrigerant storage unit of the air conditioner to perform a refrigerant release operation when the high-pressure pressure and the exhaust temperature satisfy the second trigger condition.

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