Refrigeration control method, control method of air conditioner and air conditioner

Abstract

The embodiment of the invention discloses a refrigeration control method, a control method of an air conditioner and the air conditioner, and belongs to the field of air treatment equipment. The refrigeration control method comprises the steps that peculiar smell parameters of the environment where the indoor unit is located are obtained; and if the peculiar smell parameter exceeds a preset peculiar smell threshold value, controlling at least one group of adjacent areas on the surface of the heat exchanger to form a temperature difference so as to change the shape of the condensed water which is condensed in a dropwise manner in at least two areas. The air conditioner has the advantages that after film condensation is formed, condensate water can flow down the surface of the heat exchanger, peculiar smell substances are easily discharged along with flowing of the condensate water, the flowing condensate water is not prone to breeding microorganisms, peculiar smell is not prone to being generated in the air conditioner, airflow blown out of the air conditioner is not prone to carrying the peculiar smell, and the use experience of the air conditioner is improved.

Description

Technical Field

[0001] The present application relates to the field of air handling equipment, and in particular to a refrigeration control method, an air conditioning control method, and an air conditioning. Background Art

[0002] Air conditioners are smart devices that are frequently used in indoor environments. They can cool, heat and dehumidify, and improve indoor air comfort. During the cooling process of air conditioners, condensed water is likely to appear on the heat exchanger. If it is not cleaned in time, the condensed water will easily absorb the odor of the indoor air and breed microorganisms, causing the air flow blown into the room to carry odor when the air conditioner is used, reducing the user experience of the air conditioner. Summary of the invention

[0003] The embodiments of the present application provide a refrigeration control method, an air conditioner control method, and an air conditioner, so as to at least solve the technical problem of poor air conditioner usage experience.

[0004] According to a first aspect of an embodiment of the present application, a refrigeration control method is provided, which is applied to an air conditioner, wherein an indoor unit of the air conditioner has a heat exchanger, and the method comprises:

[0005] Obtaining odor parameters of the environment in which the indoor unit is located;

[0006] If the odor parameter exceeds a preset odor threshold, at least one group of adjacent areas on the surface of the heat exchanger is controlled to form a temperature difference so as to change the shape of the condensed water in droplet form condensed in at least two of the areas.

[0007] With this embodiment, the forces on the condensed water on the surface of the heat exchanger include gravity and surface tension. When a temperature difference is formed in adjacent areas, if the condensed water in the adjacent areas is droplet-condensed condensed water, a temperature difference will be formed between different positions of the condensed water, resulting in changes in the tension coefficient of different positions of the condensed water, so that the condensed water automatically increases its own length in order to balance gravity and surface tension. The drop-shaped condensed water with increased length is easy to contact each other, thus forming a film condensation. After the film condensation is formed, the condensed water will flow down the surface of the heat exchanger, and the odorous substances will be easily discharged with the flow of the condensed water. In addition, the flowing condensed water is not easy to breed microorganisms, so that it is not easy to produce odor in the air conditioner, and the air flow blown out by the air conditioner is not easy to carry odor, which improves the user experience of the air conditioner.

[0008] In combination with the first aspect, in an optional implementation of the embodiment of the present application, controlling at least one group of adjacent areas on the surface of the heat exchanger to form a temperature difference includes:

[0009] The flow conditions of the refrigerant corresponding to at least one group of adjacent areas in the heat exchanger are adjusted so that the heat exchange effects of the refrigerant passing through the at least one group of adjacent areas are different, thereby forming a temperature difference in the at least one group of adjacent areas.

[0010] In this implementation, the refrigerant is a substance used for heat exchange in the heat exchanger. When the flow conditions of the refrigerant corresponding to adjacent areas in the heat exchanger change, temperature differences will occur in the adjacent areas. This will cause temperature differences in different locations of the droplet-shaped condensed water in the adjacent areas, making it easy to form film-shaped condensation on the surface of the heat exchanger, thus preventing the air conditioner from blowing out airflow with odor and improving the user experience of the air conditioner.

[0011] In combination with the first aspect, in an optional implementation of the embodiment of the present application, adjusting the flow of the refrigerant corresponding to at least one group of adjacent areas in the heat exchanger includes:

[0012] Adjusting the flow rate of the refrigerant corresponding to the at least one group of adjacent areas to change the flow condition of the refrigerant in the heat exchanger;

[0013] and / or, adjusting the temperature of the refrigerant in at least one group of adjacent regions to change the flow of the refrigerant in the heat exchanger;

[0014] The flow condition includes the flow rate of the refrigerant and / or the temperature of the refrigerant.

[0015] When the present implementation method is used and the flow of the refrigerant needs to be adjusted, the flow rate of the refrigerant can be adjusted, or the temperature of the refrigerant can be adjusted, or both the flow rate and the temperature can be adjusted at the same time, so that the heat exchange effects of the refrigerants corresponding to adjacent areas are different, thereby generating a temperature difference. Since the flow rate and / or temperature of the refrigerant are easy to change, the convenience of control is improved and the control cost is reduced.

[0016] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the heat exchanger includes a plurality of groups of refrigerant pipes for circulating refrigerant, the plurality of groups of refrigerant pipes are connected in sequence, each group of refrigerant pipes includes at least two parallel branch pipes, the branch pipes include a first branch pipe and a second branch pipe, and a flow valve is provided at a liquid inlet end of each group of refrigerant pipes;

[0017] The adjusting the flow rate of the refrigerant corresponding to the at least one group of adjacent areas includes:

[0018] The flow valve of at least one set of the refrigerant pipes is controlled so that the flow rates of the refrigerant flowing through the first branch pipe and the second branch pipe are different.

[0019] By adopting this implementation method, by changing the structure of the refrigerant pipe of the heat exchanger, each group of refrigerant pipes includes at least two parallel branches, and the refrigerant flow of the branches in the same group is controlled by the corresponding flow valve. When the flow of the refrigerant between the branches in the same group needs to be changed, the flow valve can be controlled, which improves the control convenience and reduces the control cost, making it difficult for droplet condensation to form on the surface of the heat exchanger, so that it is difficult for microorganisms to breed and residual odor inside the air conditioner, and improving the use experience of the air conditioner.

[0020] In combination with the first aspect, in an optional implementation of the embodiment of the present application, after controlling the flow valve of at least one group of the refrigerant pipes, the method further includes:

[0021] After a preset target time has passed, detecting the shape of condensed water on the surface of the heat exchanger;

[0022] If the shape indicates that the condensed water is drop-shaped condensation, the corresponding flow valve is controlled again to increase the flow difference between the refrigerant in the first branch pipe and the refrigerant in the second branch pipe.

[0023] By adopting this implementation method, the shape of the condensed water on the surface of the heat exchanger is monitored in time. If droplet condensation still exists after the flow valve of the refrigerant pipe is changed to form a temperature difference between the branches in the same group, the flow valve will be controlled again to increase the flow difference of the refrigerant between the first branch and the second branch, thereby increasing the temperature difference between the first branch and the second branch, and further increasing the temperature difference between the area corresponding to the first branch and the area corresponding to the second branch, which is conducive to quickly and stably converting the droplet condensation on the surface of the heat exchanger into film condensation, thereby avoiding the generation of odor in the air conditioner.

[0024] In combination with the first aspect, in an optional implementation of the embodiment of the present application, before controlling the flow valve of at least one group of the refrigerant pipes to make the flow rate of the refrigerant flowing in the first branch pipe and the second branch pipe different, the method further includes:

[0025] The flow valves of each group of the refrigerant pipes are controlled to make the flow of the refrigerant flowing in the branch pipes of each group of the refrigerant pipes the same.

[0026] The implementation method is adopted to help the heat exchanger to exchange heat as a whole, meet the basic heat exchange requirements, and thus meet the user's demand for air conditioning.

[0027] In combination with the first aspect, in an optional implementation manner of the embodiment of the present application, the method further includes:

[0028] After controlling at least one group of adjacent areas of the heat exchanger surface to form a temperature difference and a preset target time has passed, detecting the shape of condensed water on the heat exchanger surface;

[0029] If the shape indicates that the condensed water is drop-shaped condensation, the temperature difference between the corresponding adjacent areas is increased.

[0030] By adopting this implementation method, the shape of the condensed water on the surface of the heat exchanger is monitored in time, which is conducive to quickly and stably changing the droplet condensation on the surface of the heat exchanger into film condensation, thereby avoiding the generation of odor in the air conditioner.

[0031] In combination with the first aspect, in an optional implementation of the embodiment of the present application, before controlling at least one group of adjacent regions on the surface of the heat exchanger to form a temperature difference, the method further includes:

[0032] detecting the shape of condensed water on the surface of the heat exchanger;

[0033] If the shape indicates that the condensed water is drop-shaped condensation, the step of controlling at least one group of adjacent regions on the surface of the heat exchanger to form a temperature difference is performed; otherwise, the shape of the condensed water on the surface of the heat exchanger is re-detected.

[0034] With this implementation, only when the condensed water on the surface of the heat exchanger is condensed in droplets, a temperature difference is controlled to form in at least one group of adjacent areas on the surface of the heat exchanger, thereby avoiding affecting the normal use of the heat exchanger and improving the user experience of the air conditioner.

[0035] In combination with the first aspect, in an optional implementation of the embodiment of the present application, detecting the shape of condensed water on the surface of the heat exchanger includes:

[0036] Obtaining the degree of reflection and / or absorption of the light signal by the condensed water on the surface of the heat exchanger, and determining the shape of the condensed water,

[0037] Alternatively, the capacitance value of the condensed water on the surface of the heat exchanger is obtained to determine the shape of the condensed water.

[0038] By adopting this implementation method, the shape of the condensed water is detected by utilizing the degree of reflection and / or absorption of the light signal by the condensed water, or utilizing the different capacitance values ​​of the condensed water in different shapes, which is beneficial to improving the detection accuracy of the shape of the condensed water.

[0039] According to a second aspect of an embodiment of the present application, a method for controlling an air conditioner is provided. When the air conditioner is in cooling mode, the above-mentioned cooling control method is executed.

[0040] According to a third aspect of an embodiment of the present application, an air conditioner is provided, which adopts the above-mentioned refrigeration method or the above-mentioned control method.

[0041] In combination with the third aspect, in an optional implementation method of the embodiment of the present application, the indoor unit of the air conditioner has a heat exchanger, and the heat exchanger includes multiple groups of refrigerant pipes for circulating refrigerant, and the multiple groups of refrigerant pipes are connected in sequence, and each group of refrigerant pipes includes at least two parallel branches, and the branches include a first branch and a second branch, and a flow valve is provided at the liquid inlet end of each group of refrigerant pipes.

[0042] The technical effects obtained by the above-mentioned second to third aspects are similar to the technical effects obtained by the corresponding technical means in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a flow chart of a refrigeration control method provided in an embodiment of the present application;

[0044] Figure 2 is a relationship table between condensation water temperature and tension coefficient provided in the embodiment of the present application;

[0045] Figure 3 It is a structural schematic diagram of a heat exchanger of an air conditioner provided in an embodiment of the present application;

[0046] Figure 4 It is a flow chart of a refrigeration control method provided in an embodiment of the present application in a specific application.

[0047] Explanation of the numbers: 1. Refrigerant pipe; 2. First branch pipe; 3. Second branch pipe; 4. Flow valve. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0049] It should be understood that the "plurality" mentioned in this article refers to two or more. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and so on are used to distinguish between the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first", "second" and so on do not limit the quantity and execution order, and the words "first", "second" and so on do not limit certain different

[0050] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0051] First, the terms involved in the embodiments of the present application are introduced.

[0052] Droplet condensation: refers to the formation of small water droplets on the heat exchanger.

[0053] Film condensation: refers to the formation of a thin film of gas on the heat exchanger.

[0054] The above introduces the terms involved in the embodiments of the present application. Next, a refrigeration control method, an air conditioner control method and an air conditioner provided in the embodiments are further described.

[0055] Odor has always been a problem that users pay attention to when using air conditioners. The source of the odor blown out by the air conditioner mainly comes from the evaporator's adsorption of indoor environmental odor or the microorganisms that grow in the air conditioner. Among them, the adsorption of environmental odor is mainly the condensation water of the air conditioner evaporator enriching the odorous substances decomposed by indoor air and microorganisms. After the condensation water evaporates, the odorous substances are blown into the room along with the water vapor, producing odor.

[0056] There are two condensation modes of condensed water on the surface of aluminum foil of evaporator, one is film condensation and the other is droplet condensation. Droplet condensation is easier to enrich odorous substances than film condensation, because film condensation is always flowing downward, and odorous substances are easily discharged with the flow of condensed water. Droplet condensation needs to accumulate to a certain amount before it can flow away under the action of gravity, and this standing process is the process of odor concentration, and the contact surface area between droplet condensation and air is larger than that of film condensation under the same area, so droplet condensation is easier to enrich odorous substances.

[0057] Based on this, a refrigeration control method, an air conditioner control method and an air conditioner provided in an embodiment of the present application include at least the following features:

[0058] A method for controlling odor based on temperature control and an air conditioner having the same, the key of which is to transform droplet condensation into film condensation through temperature control, thereby reducing the accumulation and release of odor. The specific technical features include the following:

[0059] The odor concentration detection module monitors the odor concentration in indoor air in real time to ensure that the odor control function is activated when needed.

[0060] Condensation pattern detection module: detects the condensation pattern through an infrared sensor, an optical sensor, a laser sensor or a capacitive sensor to determine whether it is droplet condensation.

[0061] Temperature control mechanism: By adjusting the flow valve, the flow ratio of the refrigerant in different pipelines is changed, thereby adjusting the surface temperature of the evaporator and promoting the transformation of droplet condensation into film condensation.

[0062] Process control: After the air conditioner detects droplet condensation, it automatically starts the temperature control function, adjusts the flow valve, maintains it for a period of time, and then detects the condensation mode again until it is converted into film condensation.

[0063] Solve at least one of the following problems:

[0064] 1. Odor accumulation problem: During the operation of traditional air conditioners, the droplet condensation of the evaporator is prone to accumulate odor substances. These odor substances are blown into the room after the condensed water evaporates, affecting the user's comfort;

[0065] 2. Condensation method: Droplet condensation is more likely to accumulate odorous substances than film condensation, because droplet condensation needs to accumulate to a certain amount before it can flow away, while film condensation flows continuously and is not easy to accumulate odors;

[0066] 3. Non-consumable solution: Provides an odor control method that does not require additional consumables, reducing the user's usage and maintenance costs.

[0067] Include at least one of the following effects:

[0068] 1. Improve user experience: through effective odor control, ensure fresh indoor air and improve user comfort and satisfaction;

[0069] 2. Reduce maintenance costs: No additional consumables are required, which reduces the user's maintenance costs and reduces the frequent maintenance caused by odor problems;

[0070] 3. Energy saving and environmental protection: By adjusting the refrigerant flow rate, temperature control is achieved, which reduces unnecessary energy consumption and meets the requirements of energy saving and environmental protection;

[0071] 4. Intelligent control: Combined with temperature and humidity detection and condensation mode detection, intelligent odor control is achieved, improving the intelligence level of the air conditioner.

[0072] Next, the refrigeration control method provided in this embodiment is described as follows. Figure 1 The flowchart of the refrigeration control method shown is applied to an air conditioner, the indoor unit of the air conditioner has a heat exchanger, and the method includes the following processing procedures.

[0073] S100: Obtain odor parameters of the environment in which the indoor unit is located.

[0074] In one embodiment, step S100 is executed only when the air conditioner is in cooling mode.

[0075] In one embodiment, the odor parameters can be collected using a sensor that can detect odors. This embodiment does not specifically limit the type of odor, and the corresponding sensor can be selected according to the actual usage scenario of the air conditioner or the type of odor that the air conditioner is prone to.

[0076] S102: If the odor parameter exceeds a preset odor threshold, control at least one group of adjacent areas on the surface of the heat exchanger to form a temperature difference, so as to change the shape of the condensed water in droplet form condensed in at least two of the areas.

[0077] In one embodiment, the odor threshold value can be set according to actual needs, and this embodiment does not specifically limit this. For example, if the user is sensitive to odors, a smaller odor threshold value can be appropriately selected, and vice versa, a larger odor threshold value can be selected. If there are no special requirements, the default odor threshold value can be selected.

[0078] In one embodiment, the condition for water vapor to condense on the heat exchanger surface is: the temperature of the heat exchanger surface is lower than the dew point but higher than the frosting temperature. However, when the air conditioner is cooling, it is difficult to be higher than the frosting temperature, so condensed water is easily formed on the heat exchanger surface.

[0079] When the condensed water adheres to the surface of the heat exchanger, the resultant force it receives is 0. The forces received by the condensed water include its own gravity and the surface tension of the condensed water.

[0080] Since the size of the surface tension is mainly affected by the properties of the liquid substance itself and the temperature, the specific formula is:

[0081] Fsurface = σL;

[0082] Among them, F is the magnitude of surface tension, σ is the surface tension coefficient, and L is a length on the liquid surface. Figure 2 As shown, as the temperature increases, the tension coefficient decreases, which will cause the surface tension to decrease. Since the gravity remains unchanged, the condensed water will automatically increase the length L to balance the gravity and surface tension.

[0083] Based on the above principle, after controlling at least one group of adjacent areas on the surface of the heat exchanger to form a temperature difference, the temperature of the condensed water at different positions will be different, so that the condensed water will automatically stretch its own length, turning the droplet condensation into film condensation.

[0084] In one embodiment, the adjacent areas of the heat exchanger surface are determined based on the locations where the temperature difference can be formed on the heat exchanger surface. For example, if an external device such as a laser, a heater or other heating device is used, the heated location forms one area, and the unheated location forms another area. If the flow rate of the refrigerant at each location in the heat exchanger is changed, the location with different refrigerant flow rates corresponds to one area.

[0085] With this embodiment, the forces on the condensed water on the surface of the heat exchanger include gravity and surface tension. When a temperature difference is formed in adjacent areas, if the condensed water in the adjacent areas is droplet-condensed condensed water, a temperature difference will be formed between different positions of the condensed water, resulting in changes in the tension coefficient of different positions of the condensed water, so that the condensed water automatically increases its own length in order to balance gravity and surface tension. The drop-shaped condensed water with increased length is easy to contact each other, thus forming a film condensation. After the film condensation is formed, the condensed water will flow down the surface of the heat exchanger, and the odorous substances will be easily discharged with the flow of the condensed water. In addition, the flowing condensed water is not easy to breed microorganisms, so that it is not easy to produce odor in the air conditioner, and the air flow blown out by the air conditioner is not easy to carry odor, which improves the user experience of the air conditioner.

[0086] In a possible embodiment of the present application, controlling at least one group of adjacent areas on the surface of the heat exchanger to form a temperature difference includes:

[0087] The flow conditions of the refrigerant corresponding to at least one group of adjacent areas in the heat exchanger are adjusted so that the heat exchange effects of the refrigerant passing through the at least one group of adjacent areas are different, thereby forming a temperature difference in the at least one group of adjacent areas.

[0088] In one embodiment, the flow conditions are, for example, the flow velocity of the refrigerant, the flow path, the amount of the refrigerant flowing, etc., which are not specifically limited in this embodiment.

[0089] For ease of understanding, for example, multiple refrigerant inlets may be provided in the heat exchanger, and the flow conditions may be changed by controlling the flow rate, flow rate, and temperature of the refrigerant entering different refrigerant inlets. For another example, the flow path of the refrigerant may be changed by providing a valve.

[0090] With this embodiment, when the flow conditions of the refrigerant corresponding to adjacent areas in the heat exchanger change, temperature differences will occur in the adjacent areas, so that the condensed water in the form of droplets in the adjacent areas will have temperature differences at different locations, making it easy to form film condensation on the surface of the heat exchanger, thus preventing the air conditioner from blowing out airflow with odor and improving the user experience of the air conditioner.

[0091] Optionally, in an implementation of this embodiment, adjusting the flow of the refrigerant corresponding to at least one group of adjacent areas in the heat exchanger includes:

[0092] Adjusting the flow rate of the refrigerant corresponding to the at least one group of adjacent areas to change the flow condition of the refrigerant in the heat exchanger;

[0093] and / or, adjusting the temperature of the refrigerant in at least one group of adjacent regions to change the flow of the refrigerant in the heat exchanger;

[0094] The flow condition includes the flow rate of the refrigerant and / or the temperature of the refrigerant.

[0095] In one embodiment, the flow rate can be controlled by installing a flow valve so that the flow rate of the refrigerant flowing through different positions in the heat exchanger is different, thereby forming a temperature difference in the areas corresponding to different positions. The temperature can be controlled by setting multiple refrigerant inlets so that the temperature of the refrigerant entering the heat exchanger at different refrigerant inlets is different.

[0096] When the flow of the refrigerant needs to be adjusted by using this embodiment, the flow rate of the refrigerant can be adjusted, or the temperature of the refrigerant can be adjusted, or both the flow rate and the temperature can be adjusted at the same time, so that the heat exchange effects of the refrigerants corresponding to adjacent areas are different, thereby generating a temperature difference. Since the flow rate and / or temperature of the refrigerant are easy to change, the convenience of control is improved and the control cost is reduced.

[0097] Optionally, in an implementation of this embodiment, the heat exchanger includes a plurality of groups of refrigerant pipes for circulating refrigerant, the plurality of groups of refrigerant pipes are connected in sequence, each group of refrigerant pipes includes at least two parallel branch pipes, the branch pipes include a first branch pipe and a second branch pipe, and a flow valve is provided at a liquid inlet end of each group of refrigerant pipes;

[0098] The adjusting the flow rate of the refrigerant corresponding to the at least one group of adjacent areas includes:

[0099] The flow valve of at least one set of the refrigerant pipes is controlled so that the flow rates of the refrigerant flowing through the first branch pipe and the second branch pipe are different.

[0100] In one embodiment, the first branch pipe and the second branch pipe connected in parallel are two independent branches, and the flow rate can be controlled separately. Specifically, after the flow valve is controlled, the flow rate ratio of the refrigerant flowing into the first branch pipe and the second branch pipe will change, so that the flow rate of the refrigerant is different. Specifically, the ratio of the amount of refrigerant entering the first branch pipe and the second branch pipe can be changed by adjusting the opening of the flow valve.

[0101] By adopting this implementation method, by changing the structure of the refrigerant pipe of the heat exchanger, each group of refrigerant pipes includes at least two parallel branches, and the refrigerant flow of the branches in the same group is controlled by the corresponding flow valve. When the flow of the refrigerant between the branches in the same group needs to be changed, the flow valve can be controlled, which improves the control convenience and reduces the control cost, making it difficult for droplet condensation to form on the surface of the heat exchanger, so that it is difficult for microorganisms to breed and residual odor inside the air conditioner, and improving the use experience of the air conditioner.

[0102] Optionally, in an implementation of this embodiment, after controlling the flow valve of at least one group of the refrigerant pipes, the method further includes:

[0103] After a preset target time has passed, detecting the shape of condensed water on the surface of the heat exchanger;

[0104] If the shape indicates that the condensed water is drop-shaped condensation, the corresponding flow valve is controlled again to increase the flow difference between the refrigerant in the first branch pipe and the refrigerant in the second branch pipe.

[0105] In one embodiment, the target duration can be set according to actual needs. For example, the target duration can be 5 minutes or 10 minutes, and this embodiment does not specifically limit this.

[0106] The shape of the condensed water can be detected by taking a photo or using a sensor.

[0107] By adopting this implementation method, the shape of the condensed water on the surface of the heat exchanger is monitored in time. If droplet condensation still exists after the flow valve of the refrigerant pipe is changed to form a temperature difference between the branches in the same group, the flow valve will be controlled again to increase the flow difference of the refrigerant between the first branch and the second branch, thereby increasing the temperature difference between the first branch and the second branch, and further increasing the temperature difference between the area corresponding to the first branch and the area corresponding to the second branch, which is conducive to quickly and stably converting the droplet condensation on the surface of the heat exchanger into film condensation, thereby avoiding the generation of odor in the air conditioner.

[0108] Optionally, in an implementation of this embodiment, before controlling the flow valve of at least one group of the refrigerant pipes to make the flow rates of the refrigerant flowing in the first branch pipe and the second branch pipe different, the method further includes:

[0109] The flow valves of each group of the refrigerant pipes are controlled to make the flow of the refrigerant flowing in the branch pipes of each group of the refrigerant pipes the same.

[0110] In one embodiment, the opening of the flow valve is first controlled to make the refrigerant flow in each branch pipe the same.

[0111] The implementation method is adopted to help the heat exchanger to exchange heat as a whole, meet the basic heat exchange requirements, and thus meet the user's demand for air conditioning.

[0112] Optionally, in an implementation of this embodiment, the method further includes:

[0113] After controlling at least one group of adjacent areas of the heat exchanger surface to form a temperature difference and a preset target time has passed, detecting the shape of condensed water on the heat exchanger surface;

[0114] If the shape indicates that the condensed water is drop-shaped condensation, the temperature difference between the corresponding adjacent areas is increased.

[0115] By adopting this implementation method, the shape of the condensed water on the surface of the heat exchanger is monitored in time, which is conducive to quickly and stably changing the droplet condensation on the surface of the heat exchanger into film condensation, thereby avoiding the generation of odor in the air conditioner.

[0116] Optionally, in an implementation of this embodiment, before controlling at least one group of adjacent regions on the surface of the heat exchanger to form a temperature difference, the method further includes:

[0117] detecting the shape of condensed water on the surface of the heat exchanger;

[0118] If the shape indicates that the condensed water is drop-shaped condensation, the step of controlling at least one group of adjacent regions on the surface of the heat exchanger to form a temperature difference is performed; otherwise, the shape of the condensed water on the surface of the heat exchanger is re-detected.

[0119] With this implementation, only when the condensed water on the surface of the heat exchanger is condensed in droplets, a temperature difference is controlled to form in at least one group of adjacent areas on the surface of the heat exchanger, thereby avoiding affecting the normal use of the heat exchanger and improving the user experience of the air conditioner.

[0120] Optionally, in an implementation of this embodiment, the detecting the shape of the condensed water on the surface of the heat exchanger includes:

[0121] Obtaining the degree of reflection and / or absorption of the light signal by the condensed water on the surface of the heat exchanger, and determining the shape of the condensed water,

[0122] Alternatively, the capacitance value of the condensed water on the surface of the heat exchanger is obtained to determine the shape of the condensed water.

[0123] In one embodiment, an infrared sensor may be used: the shape distribution of water droplets is measured by detecting the degree of absorption of infrared rays by the water layer, which has the advantages of non-contact, pollution-free, and real-time response.

[0124] Optical sensor: It measures the reflection and absorption of light by the water layer to determine the shape distribution of water droplets. It has the advantages of high precision, high sensitivity, and long-distance detection.

[0125] Laser sensor: It measures the shape distribution of the water layer by measuring the reflection and absorption of laser by the water layer. It has the advantages of high precision, high sensitivity and long-distance detection.

[0126] Capacitive sensor: It can identify the condensation mode by detecting the local capacitance changes under different condensation modes, and has the advantages of high precision and high sensitivity.

[0127] By adopting this implementation method, the shape of the condensed water is detected by utilizing the degree of reflection and / or absorption of the light signal by the condensed water, or utilizing the different capacitance values ​​of the condensed water in different shapes, which is beneficial to improving the detection accuracy of the shape of the condensed water.

[0128] An embodiment of the present application provides a method for controlling an air conditioner, which executes the above-mentioned cooling control method when the air conditioner is cooling.

[0129] An air conditioner provided in an embodiment of the present application adopts the above-mentioned refrigeration method or the above-mentioned control method.

[0130] Optionally, in an implementation of this embodiment, as Figure 3 As shown, the indoor unit of the air conditioner has a heat exchanger, which includes multiple groups of refrigerant pipes 1 for circulating refrigerant. The multiple groups of refrigerant pipes 1 are connected in sequence, and each group of refrigerant pipes 1 includes at least two parallel branch pipes, and the branch pipes include a first branch pipe 2 and a second branch pipe 3. A flow valve 4 is provided at the liquid inlet end of each group of refrigerant pipes.

[0131] In the above-mentioned embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The steps shown in the relevant flow chart can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flow chart, in some cases, the steps shown or described can be executed in an order different from that here. In other words, the order of steps described in the foregoing embodiments is only an example, and it is also within the scope of protection of the embodiments of the present application to reasonably adjust the order of steps based on the content of the embodiments of the present application.

[0132] In a specific implementation of the embodiment of the present application, the refrigeration control method, the air conditioner control method and the air conditioner include the following processing procedures:

[0133] The air conditioner internal unit comprises basic components of the air conditioner, an odor concentration detection module, a refrigeration function module and a droplet condensation detection module;

[0134] The basic components of the air conditioner include fins, copper tubes, etc. The preferred fin coating is a hydrophilic coating.

[0135] The odor concentration detection module can monitor the odor concentration of indoor air in real time to ensure that the odor control function is activated when needed.

[0136] The refrigeration function module can control the air conditioner to turn on the refrigeration function and condensation will occur at the same time.

[0137] The condensation mode detection module is used to determine whether the condensation mode is droplet condensation or film condensation. Some technologies to achieve this function include:

[0138] Infrared sensor: It measures the shape distribution of water droplets by detecting the degree of infrared absorption by the water layer. It has the advantages of non-contact, pollution-free and real-time response.

[0139] Optical sensor: It measures the reflection and absorption of light by the water layer to determine the shape distribution of water droplets. It has the advantages of high precision, high sensitivity, and long-distance detection.

[0140] Laser sensor: It measures the shape distribution of the water layer by measuring the reflection and absorption of laser by the water layer. It has the advantages of high precision, high sensitivity and long-distance detection.

[0141] Capacitive sensor: It can identify the condensation mode by detecting the local capacitance changes under different condensation modes, and has the advantages of high precision and high sensitivity.

[0142] like Figure 4 As shown, the control method comprises the following steps:

[0143] 1. The air conditioner operates the cooling function;

[0144] 2. Detect the current indoor odor concentration, recorded as Cx; set the odor concentration for the activation function, recorded as C0.

[0145] When Cx ≥ C0, that is, the current indoor odor concentration is high, the odor control method needs to be turned on; otherwise, return to re-judge the current indoor odor concentration.

[0146] 3. If the condensation mode of the air conditioner is detected to be droplet condensation (i.e., during the operation of the air conditioner, the odor is easily concentrated in the water film, and after a certain period of time, it will release odorous gas that exceeds the user's olfactory threshold, affecting the user experience), proceed to the next step, otherwise continue to judge.

[0147] 4. The air conditioner enters the odor control function based on temperature regulation. The main principle is to transform droplet condensation into film condensation through temperature regulation, making it difficult or rare for the water film to accumulate odor, and film condensation is also easier to flow away odor, so the possibility of secondary pollution is lower.

[0148] The condition for water vapor to condense on the fins is that the fin temperature is lower than the dew point but higher than the frost temperature.

[0149] If the water film can adhere to the fin, it means that the resultant force on the fin is 0, and the water is in a state of equilibrium. The vertical forces acting on the water are ① gravity and ② surface tension of the water.

[0150] The magnitude of surface tension is mainly affected by the properties of the liquid itself and the temperature. The formula is:

[0151] F surface = σL

[0152] Where F is the magnitude of the surface tension, σ is the surface tension coefficient, and L is a length on the liquid surface. Figure 2 It is known that as the temperature decreases, the surface tension of the liquid increases. When the temperature is too low, it will cause frost and the above formula does not apply. Under normal circumstances, the air conditioner will only enter the condensation stage and not the frosting stage, so it meets the use requirements.

[0153] When the temperature in the middle of the water drop is high and the surface tension coefficient decreases, the water drop needs to extend L to maintain equilibrium;

[0154] The temperature on both sides is low and the surface tension coefficient increases. On the one hand, the force maintaining the shape of the water droplets is decreasing. On the other hand, there are forces on both sides that make the water droplets flatten and form film condensation.

[0155] The specific steps are as follows: in the initial stage of the air conditioner, the flow valve does not adjust the flow ratio to 1:1, that is, the amount of refrigerant passing through the dotted line pipeline and the solid line pipeline is the same, and the temperature is similar.

[0156] Adjust the flow valve so that the flow ratio through the dotted line pipeline and the solid line pipeline is 1:2, that is, the amount of refrigerant flowing through the dotted line pipeline is small and the temperature is higher, and proceed to the next step.

[0157] 5. After 5-10 minutes, check again whether the air conditioner condensation mode is film condensation. If it is, proceed to the next step; if it is not, determine whether the user has turned off the air conditioner. If it is, the flow valve returns to the initial position and ends. If it is not, return to determine whether to turn off the air conditioner.

[0158] 6. Adjust the flow valve so that the flow ratio through the dotted line pipeline and the solid line pipeline is 1:3, that is, increase the relative temperature difference, aggravate the impact on the conversion of the condensation mode, and go to the next step. If it is judged as otherwise, determine whether the user shuts down. If so, the flow valve returns to the initial position and ends. If it is otherwise, return to determine whether to shut down.

[0159] The sequence of serial numbers or introduction of the embodiments of the present application is for description only and does not represent the superiority or inferiority of the embodiments.

[0160] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0161] 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 on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0162] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0163] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)). It is worth noting that the computer-readable storage medium mentioned in the embodiment of the present application may be a non-volatile storage medium, in other words, a non-transient storage medium.

[0164] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.) and signals involved in the embodiments of this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions. For example, the scene data of the current frame in the three-dimensional virtual scene, the device information of the client, and the scene interaction information involved in the embodiments of this application are all obtained with full authorization.

[0165] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A refrigeration control method, characterized in that: Applied to an air conditioner, the indoor unit of the air conditioner has a heat exchanger, and the method comprises: Obtaining odor parameters of the environment in which the indoor unit is located; If the odor parameter exceeds a preset odor threshold, at least one group of adjacent areas on the surface of the heat exchanger is controlled to form a temperature difference so as to change the shape of the condensed water in droplet form condensed in at least two of the areas.

2. The refrigeration control method according to claim 1, characterized in that: The step of controlling at least one group of adjacent regions on the surface of the heat exchanger to form a temperature difference comprises: The flow conditions of the refrigerant corresponding to at least one group of adjacent areas in the heat exchanger are adjusted so that the heat exchange effects of the refrigerant passing through the at least one group of adjacent areas are different, thereby forming a temperature difference in the at least one group of adjacent areas.

3. The refrigeration control method according to claim 2, characterized in that: The adjusting the flow of the refrigerant corresponding to at least one group of adjacent areas in the heat exchanger includes: Adjusting the flow rate of the refrigerant corresponding to the at least one group of adjacent areas to change the flow condition of the refrigerant in the heat exchanger; and / or, adjusting the temperature of the refrigerant in at least one group of adjacent regions to change the flow of the refrigerant in the heat exchanger; The flow condition includes the flow rate of the refrigerant and / or the temperature of the refrigerant.

4. The refrigeration control method according to claim 3, characterized in that: The heat exchanger includes a plurality of groups of refrigerant pipes for circulating refrigerant, the plurality of groups of refrigerant pipes are connected in sequence, each group of refrigerant pipes includes at least two parallel branch pipes, the branch pipes include a first branch pipe and a second branch pipe, and a flow valve is provided at the liquid inlet end of each group of refrigerant pipes; The adjusting the flow rate of the refrigerant corresponding to the at least one group of adjacent areas includes: The flow valve of at least one set of the refrigerant pipes is controlled so that the flow rates of the refrigerant flowing through the first branch pipe and the second branch pipe are different.

5. The refrigeration control method according to claim 4, characterized in that: After controlling the flow valve of at least one group of the refrigerant pipes, the method further includes: After a preset target time has passed, detecting the shape of condensed water on the surface of the heat exchanger; If the shape indicates that the condensed water is drop-shaped condensation, the corresponding flow valve is controlled again to increase the flow difference between the refrigerant in the first branch pipe and the refrigerant in the second branch pipe.

6. The refrigeration control method according to claim 4, characterized in that: Before controlling the flow valve of at least one group of the refrigerant pipes to make the flow rates of the refrigerant flowing in the first branch pipe and the second branch pipe different, the method further includes: The flow valves of each group of the refrigerant pipes are controlled to make the flow of the refrigerant flowing in the branch pipes of each group of the refrigerant pipes the same.

7. The refrigeration control method according to claim 1, characterized in that: The method further comprises: After controlling at least one group of adjacent areas of the heat exchanger surface to form a temperature difference and a preset target time has passed, detecting the shape of condensed water on the heat exchanger surface; If the shape indicates that the condensed water is drop-shaped condensation, the temperature difference between the corresponding adjacent areas is increased.

8. The refrigeration control method according to claim 1, characterized in that: Before controlling at least one group of adjacent regions of the heat exchanger surface to form a temperature difference, the method further comprises: detecting the shape of condensed water on the surface of the heat exchanger; If the shape indicates that the condensed water is drop-shaped condensation, the step of controlling at least one group of adjacent regions on the surface of the heat exchanger to form a temperature difference is performed; otherwise, the shape of the condensed water on the surface of the heat exchanger is re-detected.

9. The refrigeration control method according to claim 5 or 8, characterized in that: The detecting the shape of condensed water on the surface of the heat exchanger comprises: Obtaining the degree of reflection and / or absorption of the light signal by the condensed water on the surface of the heat exchanger, and determining the shape of the condensed water, Alternatively, the capacitance value of the condensed water on the surface of the heat exchanger is obtained to determine the shape of the condensed water.

10. A method for controlling an air conditioner, characterized in that: When the air conditioner is in cooling mode, the cooling control method according to any one of claims 1 to 9 is executed.

11. An air conditioner, characterized in that: Adopt the refrigeration method described in any one of claims 1 to 9 or adopt the control method described in claim 10.

12. The air conditioner according to claim 11, characterized in that: The indoor unit of the air conditioner has a heat exchanger, which includes multiple groups of refrigerant pipes for circulating refrigerant. The multiple groups of refrigerant pipes are connected in sequence, and each group of refrigerant pipes includes at least two parallel branches, and the branches include a first branch pipe and a second branch pipe. A flow valve is provided at the liquid inlet end of each group of refrigerant pipes.

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