Heat dissipation control method for outdoor unit of air conditioner and air conditioner

Abstract

The invention relates to the technical field of household appliances, particularly provides a heat dissipation control method of an outdoor unit of an air conditioner and the air conditioner, and aims to solve the problem of non-uniform heat dissipation of an existing condenser. Therefore, the control method comprises the steps that S100, the temperatures of a plurality of heat exchange tubes are obtained in real time or at set time intervals; s200, comparing the temperature of each heat exchange tube with a target temperature; and S300, according to the comparison result, the air outlet amount of a jet flow opening corresponding to the heat exchange pipe is adjusted. Therefore, the air outlet amount of the jet flow openings corresponding to the heat exchange pipes can be adjusted according to the heat dissipation conditions of the different heat exchange pipes, so that the cooling effect of each heat exchange pipe is accurately controlled, it is ensured that the air conditioner system operates in the optimal state, the heat dissipation efficiency is improved, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular provides a heat dissipation control method for an outdoor unit of an air conditioner and an air conditioner. Background Art

[0002] In the refrigeration system, the condenser, as a key component, undertakes the important task of converting high-temperature and high-pressure gaseous refrigerant into high-temperature and high-pressure liquid refrigerant, and this process is accompanied by the release of heat. In order to improve the condensation efficiency and system performance, the condenser design often adopts multiple parallel refrigerant pipeline structures to increase the heat dissipation area and accelerate the transfer and dissipation of heat. However, due to the influence of various factors such as manufacturing process, installation conditions, airflow distribution and refrigerant distribution, it is difficult to ensure completely consistent heat dissipation conditions between parallel refrigerant pipelines, resulting in differences in the subcooling of each branch (that is, the degree to which the temperature of the refrigerant after condensation is lower than its saturation temperature). Uneven supercooling will not only reduce the overall heat exchange efficiency of the condenser, but may also cause pressure fluctuations inside the system, affecting the stability and reliability of the refrigeration system.

[0003] Traditional air conditioner outdoor units usually use axial flow fans as a heat dissipation method, providing airflow for the entire condenser through a unified air supply method. Although this design is simple in structure and low in cost, it is powerless when faced with the problem of uneven heat dissipation of the condenser. The airflow generated by the axial flow fan is often difficult to accurately control its flow direction and flow rate, and it is impossible to achieve precise adjustment and optimization for each local area of ​​the condenser, so it cannot effectively solve the efficiency loss caused by uneven heat dissipation.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention

[0005] The present invention aims to solve the above technical problem, that is, to solve the problem of uneven heat dissipation of the existing condenser.

[0006] In a first aspect, the present invention provides a heat dissipation control method for an outdoor unit of an air conditioner, wherein the outdoor unit of the air conditioner comprises a casing, a condenser installed in the casing, an air supply device and an air outlet device, wherein the air supply device can supply air into the air outlet device, the condenser comprises a plurality of heat exchange tubes arranged at intervals along a first direction, the air outlet device comprises jet ports respectively corresponding to the plurality of heat exchange tubes, and the plurality of jet ports can respectively blow air toward the corresponding heat exchange tubes, and the control method comprises:

[0007] S100: Acquire the temperatures of the plurality of heat exchange tubes in real time or at set intervals;

[0008] S200: Comparing the temperature of each heat exchange tube with a target temperature;

[0009] S300: According to the comparison result, the air flow rate of the jet outlet corresponding to the heat exchange tube is adjusted.

[0010] In a preferred technical solution of the above control method, the air outlet device includes a plurality of first air ducts which are separately arranged, the plurality of first air ducts are spaced apart and distributed along the first direction and the plurality of first air ducts respectively correspond to the plurality of heat exchange tubes, the air inlet end of each first air duct is connected to the air supply device, and each first air duct is provided with at least one jet outlet.

[0011] Step S300 specifically includes:

[0012] S310: When the temperature of the heat exchange tube is lower than the target temperature, reducing the air volume in the first air duct corresponding thereto;

[0013] S320: When the temperature of the heat exchange tube is greater than the target temperature, the air volume in the corresponding first air duct is increased.

[0014] In a preferred technical solution of the above control method, the air conditioner outdoor unit further comprises an air valve disposed at the air inlet end of the first air duct, and the air valve is capable of controlling the air volume entering the first air duct.

[0015] Step S310 specifically includes:

[0016] When the temperature of the heat exchange tube is lower than the target temperature, reducing the opening of the corresponding air valve;

[0017] Step S320 specifically includes:

[0018] When the temperature of the heat exchange tube is greater than the target temperature, the opening of the corresponding air valve is increased.

[0019] In a preferred technical solution of the above control method, the air supply device includes a fan and a second air duct, the air inlet end of each of the first air ducts is connected to the second air duct, and the fan is arranged at the air inlet end of the second air duct.

[0020] In step S310, before executing "reducing the opening of the corresponding air valve", the control method further includes:

[0021] Determining whether the opening of the corresponding air valve is at a minimum opening;

[0022] If not, then execute "reduce the opening of the corresponding air valve"; if yes, then reduce the speed of the fan; and / or

[0023] In step S320, before executing "increasing the opening of the corresponding air valve", the control method further includes:

[0024] Determining whether the opening of the corresponding air valve is at the maximum opening;

[0025] If not, then execute "increase the opening of the corresponding air valve"; if so, increase the speed of the fan.

[0026] In the preferred technical solution of the above control method, in step S310, after executing "reducing the speed of the fan", the control method further includes:

[0027] increasing the opening of the air valve corresponding to the heat exchange tube having the same target temperature; and / or

[0028] In step S320, after executing “increasing the speed of the fan”, the control method further includes:

[0029] The opening degree of the air valve corresponding to the heat exchange tube having the same target temperature is reduced.

[0030] In the preferred technical solution of the above control method, the control method further includes:

[0031] S400: when the acquired temperature of the heat exchange tube is the same as the target temperature, the air flow rate of the jet outlet corresponding to the heat exchange tube is continuously operated for T time according to the current air flow rate, and the temperature of the heat exchange tube is acquired again;

[0032] S500: Repeat steps S200 to S400 according to the re-acquired temperature of the heat exchange tube.

[0033] In the preferred technical solution of the above-mentioned control method, the casing is provided with an air inlet at a position corresponding to the gap between the two first air ducts, and the first air duct is provided with an air guide plate at the jet outlet, and the air guide plate extends from the jet outlet toward the condenser, and the air inlet corresponds to the gap between the air guide plates on the two adjacent first air ducts, and the air guide plate can increase the air outlet velocity of the jet outlet to form a low-pressure area between adjacent first air ducts, thereby sucking outside air into the casing through the air inlet and blowing it onto the condenser.

[0034] In a preferred technical solution of the above control method, the air guide plate is streamlined in shape.

[0035] In a preferred technical solution of the above control method, the fan is a turbo fan.

[0036] In a second aspect, the present invention further provides an air conditioner, comprising a controller, wherein the controller is configured to execute the above control method.

[0037] It can be understood by those skilled in the art that the technical solution of the present invention provides a heat dissipation control method for an outdoor unit of an air conditioner, wherein the outdoor unit of the air conditioner comprises a casing, a condenser installed in the casing, an air supply device and an air outlet device, wherein the air supply device can supply air to the air outlet device, the condenser has a plurality of heat exchange tubes arranged at intervals along a first direction, the air outlet device has jet ports corresponding to the plurality of heat exchange tubes, and the plurality of jet ports can respectively blow air toward the corresponding heat exchange tubes, and the control method comprises: S100: obtaining the temperature of the plurality of heat exchange tubes in real time or at set intervals; S200: comparing the temperature of each heat exchange tube with the target temperature; S300: adjusting the air outlet of the jet port corresponding to the heat exchange tube according to the comparison result. In the case of adopting the above technical solution, the present invention can adjust the air outlet of the jet port corresponding to the heat exchange tube according to the heat dissipation conditions of different heat exchange tubes, so as to effectively solve the problem of poor heat dissipation effect of the condenser. Specifically, by comparing the heat exchange tube temperature obtained in real time with the preset target temperature, it can be determined which heat exchange tubes have poor heat exchange effect. According to the comparison results, the air volume of the jet outlet corresponding to the heat exchange tube is adjusted to accurately control the cooling effect of each heat exchange tube, ensure that the air conditioning system operates in the best state, improve the heat dissipation efficiency and extend the life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0039] Figure 1 The structure of the outdoor unit of the air conditioner of the present invention is shown in FIG. Figure 1 ;

[0040] Figure 2 The structure of the outdoor unit of the air conditioner of the present invention is shown in FIG. Figure 2 ;

[0041] Figure 3 It is a structural schematic diagram of a condenser of the present invention;

[0042] Figure 4 It is a structural schematic diagram of the air outlet device of the present invention;

[0043] Figure 5 is a cross-sectional view of the air outlet device of the present invention;

[0044] Figure 6 It is a schematic structural diagram of the air supply device of the present invention;

[0045] Figure 7 It is a flow chart of the heat dissipation control method of the air conditioner outdoor unit of the present invention.

[0046] List of reference numerals:

[0047] 1. Casing; 11. Air outlet; 12. Air inlet;

[0048] 2. Condenser; 21. Heat exchange tube;

[0049] 3. Air supply device; 31. Fan; 32. Second air duct;

[0050] 4. Air outlet device; 41. First air duct; 411. Jet outlet; 412. Air valve; 42. Air guide plate. DETAILED DESCRIPTION

[0051] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the following embodiments are introduced in conjunction with an air conditioner outdoor unit, the heat dissipation control method of the air conditioner outdoor unit provided by the present invention is also applicable to other products that need to solve the poor heat dissipation effect of the condenser.

[0052] It should be noted that, in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Based on the problem of uneven heat dissipation of the existing condenser pointed out in the background technology, the present invention provides a heat dissipation control method for an air conditioner outdoor unit, aiming to adjust the air flow rate of the jet outlet corresponding to the heat exchange tube according to the heat dissipation conditions of different heat exchange tubes, so as to effectively solve the problem of poor heat dissipation effect of the condenser.

[0054] like Figures 1 to 3 As shown, the present invention provides an outdoor unit of an air conditioner, comprising a casing 1, a condenser 2 installed in the casing 1, an air supply device 3 and an air outlet device 4, the air supply device 3 can supply air into the air outlet device 4, the condenser 2 has a plurality of heat exchange tubes 21 arranged at intervals along a first direction, the air outlet device 4 has jet outlets 411 respectively corresponding to the plurality of heat exchange tubes 21, and the plurality of jet outlets 411 can blow air toward the corresponding heat exchange tubes 21 respectively.

[0055] The casing 1 serves as the outer shell of the entire outdoor unit, protecting the internal components from the external environment. The condenser 2 is a key component in the air conditioning refrigeration cycle, which is used to release the heat absorbed indoors to the outdoors. The condenser 2 includes a plurality of heat exchange tubes 21, which are arranged at intervals along a first direction to more effectively exchange heat. The air supply device 3 is responsible for generating and guiding the airflow, thereby supplying air into the air outlet device 4, accelerating the air flow, and improving the heat dissipation efficiency. The air outlet device 4 is designed with specific jet ports 411, which correspond one-to-one to the heat exchange tubes 21 of the condenser 2, thereby achieving precise guidance of the airflow and ensuring that the airflow can be accurately blown to each heat exchange tube 21.

[0056] In the air conditioner outdoor unit provided by the present invention, when the air supply device 3 is started, the generated airflow is directed to the air outlet device 4, and the multiple jet ports 411 on the air outlet device 4 are respectively aimed at each heat exchange tube 21 of the condenser 2. The airflow is blown accurately to the corresponding heat exchange tube 21 through the jet ports 411. Since the airflow can directly and evenly blow through each heat exchange tube 21, the thermal resistance is reduced, the convection heat exchange effect on the surface of the condenser 2 is enhanced, the heat exchange process is more efficient, and the heat exchange efficiency is improved.

[0057] Preferably, if Figure 2 and Figure 4 As shown, the air outlet device 4 includes a plurality of first air ducts 41 that are separated from each other. The plurality of first air ducts 41 are spaced apart and distributed along the first direction and the plurality of first air ducts 41 respectively correspond to a plurality of heat exchange tubes 21. The air inlet end of each first air duct 41 is connected to the air supply device 3, and each first air duct 41 is provided with at least one jet outlet 411.

[0058] The present invention divides the interior of the air outlet device 4 into a plurality of independent air ducts (i.e., a plurality of first air ducts 41 arranged separately), and these air ducts are spaced apart along the first direction (i.e., the arrangement direction of the heat exchange tubes 21 on the condenser 2). Each first air duct 41 corresponds to one or more heat exchange tubes 21 on the condenser 2, ensuring that the airflow can be accurately blown to these heat exchange tubes 21. The air inlet end of each first air duct 41 is connected to the air supply device 3 to receive the airflow generated by the air supply device 3. At least one jet outlet 411 is provided on each first air duct 41, and these jet outlets 411 are responsible for directing the airflow to the corresponding heat exchange tube 21.

[0059] After the air supply device 3 is started, the generated airflow is evenly distributed to the air inlet end of each first air duct 41. The airflow flows in the first air duct 41 and is accurately blown to the corresponding heat exchange tube 21 through the jet port 411. Since each first air duct 41 corresponds to a specific heat exchange tube 21, the airflow can evenly cover the entire surface of the condenser 2, thereby improving the heat exchange efficiency.

[0060] Preferably, if Figure 2 and Figure 4 As shown, the air conditioner outdoor unit further includes an air valve 412 disposed at the air inlet end of the first air duct 41 , and the air valve 412 can control the air volume entering the first air duct 41 .

[0061] The air valve 412 can adjust and control the amount of air entering each first air duct 41, thereby achieving precise adjustment of the cooling requirements of different areas of the condenser 2. When the air conditioning system is running, the air supply device 3 generates airflow, and enters each first air duct 41 through the air valve 412. The air valve 412 adjusts its opening according to the preset control logic or external signal (such as temperature sensor feedback) to control the amount of air entering each air duct. By accurately adjusting the air volume of each air duct, it can be ensured that each heat exchange tube 21 on the condenser 2 can be properly cooled, avoiding the occurrence of overheating or overcooling, and improving the stability and reliability of the system.

[0062] Preferably, if Figure 2 and Figure 6 As shown, the air supply device 3 includes a fan 31 and a second air duct 32 , the air inlet end of each first air duct 41 is connected to the second air duct 32 , and the fan 31 is arranged at the air inlet end of the second air duct 32 .

[0063] By integrating the fan 31 and the second air duct 32 into the air supply device 3, and connecting the air inlet end of each first air duct 41 to the second air duct 32, a compact and efficient structure is achieved. When the air conditioning system needs cooling, the fan 31 is started and generates airflow. The airflow is guided to the air inlet end of each first air duct 41 through the second air duct 32, which can ensure that the airflow can be evenly and smoothly distributed to each first air duct 41. After the airflow enters the first air duct 41, it is accurately blown to the corresponding heat exchange tube 21 through the jet port 411, achieving efficient heat exchange, thereby avoiding the occurrence of local overheating or overcooling.

[0064] Preferably, the fan 31 is a turbo fan.

[0065] In order to protect the blades and prevent human contact with the blades, traditional axial flow fans usually add grilles to the air outlet 11 and the air inlet 12 of the housing 1. Although these grilles play a protective role, they also increase wind resistance. The increase in wind resistance will lead to poor air flow, thereby increasing the energy consumption of the fan. In addition, due to the increase in wind resistance, the air flow speed slows down, and the heat on the condenser 2 cannot be quickly taken away, which will cause the temperature of the condenser 2 to rise, thereby affecting the cooling efficiency of the entire air conditioning system.

[0066] The present invention sets the fan 31 as a turbofan. Due to its unique blade design and structural strength, the turbofan does not need dense grilles to protect the blades like an axial flow fan, which allows air to flow more freely and pass more smoothly, reducing the turbulence and loss of airflow inside the fan and reducing wind resistance. Since the exhaust air is smoother, the heat on the condenser 2 can be taken away more quickly, which helps to reduce the temperature of the condenser 2 and improve the refrigeration efficiency of the entire air conditioning system. In addition, the structure of the turbofan is relatively compact and takes up little space. This makes it very suitable for installation in the limited space of the outdoor unit of the air conditioner without causing much impact on the overall layout and aesthetics of the equipment.

[0067] The turbofan generates airflow through high-speed rotating blades. When the airflow enters each first air duct 41 through the second air duct 32, the strong wind pressure and wind speed provided by the turbofan can ensure that the airflow is evenly distributed to each air duct and blows accurately to the condenser 2 through the jet port 411, thereby improving the heat exchange efficiency.

[0068] Preferably, if Figure 4 and Figure 5 As shown, the casing 1 is provided with an air inlet 12 at a position corresponding to the gap between the two first air ducts 41, and the first air duct 41 is provided with an air guide plate 42 at the jet port 411, and the air guide plate 42 extends from the jet port 411 toward the condenser 2, and the air inlet 12 corresponds to the gap between the air guide plates 42 on the two adjacent first air ducts 41, and the air guide plate 42 can increase the air outlet velocity of the jet port 411 to form a low-pressure area between the adjacent first air ducts 41, thereby sucking the outside air into the casing 1 through the air inlet 12 and blowing it onto the condenser 2.

[0069] The casing 1 is provided with air inlets 12 at positions corresponding to the gaps between the two first air ducts 41. These air inlets 12 allow outside air to enter the casing 1 and blow toward the condenser 2 together with the airflow generated by the air supply device 3. The first air duct 41 is provided with an air guide plate 42 at the jet port 411, and the air guide plate 42 extends from the jet port 411 toward the condenser 2. The air guide plate 42 can change the flow direction and speed of the airflow, thereby increasing the air flow rate of the jet port 411. When the airflow passes through the air guide plate 42 and flows out of the jet port 411 at an accelerated speed, a low-pressure area is formed between adjacent first air ducts 41 according to the Venturi effect, and this low-pressure area attracts outside air to enter the casing 1 through the air inlet 12, and blows toward the condenser 2 together with the mainstream airflow after mixing, thereby enhancing the cooling effect of the condenser 2. In addition, since the outside air is effectively utilized, the energy consumption required by the air supply device 3 is reduced, and the energy efficiency of the entire air conditioning system is improved.

[0070] Preferably, if Figure 5 As shown, the air guide plate 42 is streamlined in shape.

[0071] The streamlined design means that the contour of the air guide plate 42 is smooth and continuous without sharp turns or protrusions. This shape imitates the most efficient flow forms in nature, such as water droplets or fish bodies, to reduce the turbulence and resistance of the airflow on the surface of the air guide plate 42. The streamlined air guide plate 42 can guide the airflow to pass through the jet port 411 more smoothly, reduce the separation of the airflow and the formation of vortices. This helps to maintain the stability and uniformity of the airflow, increase the airflow velocity, and reduce energy loss.

[0072] When the airflow generated by the air supply device 3 passes through the first air duct 41, the streamlined air guide plate 42 can guide the airflow to flow along its smooth contour until it passes through the jet port 411. This design ensures that the speed and direction of the airflow at the jet port 411 are optimally controlled, thereby improving the cooling efficiency of the condenser 2.

[0073] Preferably, if Figure 6 As shown, the second air duct 32 extends along the first direction, and along the first direction, the second air duct 32 is provided with air outlet holes corresponding to the plurality of first air ducts 41 .

[0074] The second air duct 32 extends along the first direction, and has air outlets corresponding to the plurality of first air ducts 41, which can ensure that the air is evenly distributed from the second air duct 32 to each first air duct 41. This design avoids the problem of uneven heat dissipation caused by insufficient air volume in some first air ducts 41. By opening air outlets corresponding to the first air duct 41 on the second air duct 32, the airflow path can be further simplified, and the resistance and loss of the airflow during the transmission process can be reduced. This helps to improve the air supply efficiency and reduce energy consumption. The uniform air supply and optimized airflow path work together to allow the heat on the heat exchange tube 21 to be taken away more quickly and evenly. This helps to improve the heat dissipation efficiency of the condenser 2, reduce its operating temperature, and thus extend its service life.

[0075] In addition, if Figure 7 As shown, the present invention also provides a heat dissipation control method for an outdoor unit of an air conditioner, the method comprising:

[0076] S100: Acquire the temperatures of the plurality of heat exchange tubes 21 in real time or at set intervals;

[0077] S200: Compare the temperature of each heat exchange tube 21 with the target temperature;

[0078] S300: adjusting the air flow rate of the jet port 411 corresponding to the heat exchange tube 21 according to the comparison result;

[0079] S400: when the acquired temperature of the heat exchange tube 21 is the same as the target temperature, the air flow rate of the jet outlet 411 corresponding to the heat exchange tube 21 is continuously operated for T time according to the current air flow rate, and then the temperature of the heat exchange tube 21 is acquired again;

[0080] S500: Repeat steps S200 to S400 according to the re-acquired temperature of the heat exchange tube 21 .

[0081] The present invention provides a temperature sensor at the outlet of each heat exchange tube 21, and the temperature sensor can obtain the temperature data of the corresponding heat exchange tube 21 in real time. These sensors can accurately measure the temperature of the surface of the heat exchange tube 21 to ensure the accuracy and reliability of the data. By comparing the temperature of the heat exchange tube 21 obtained in real time or at set intervals with the preset target temperature, it can be determined which heat exchange tubes 21 have poor heat exchange effects. Therefore, according to the comparison results, the air volume of the jet outlet 411 corresponding to the heat exchange tube 21 is adjusted to accurately control the cooling effect of each heat exchange tube 21, ensure that the air conditioning system operates in the best state, improve the heat dissipation efficiency and extend the life of the equipment. When the temperature of a heat exchange tube 21 reaches the target temperature, the system will not immediately adjust the air volume of the corresponding jet outlet 411, but keep the current air volume for a period of time T, thereby ensuring the stable operation of the system and avoiding energy consumption and wear caused by frequent adjustments. After the T time is over, the system re-acquires the temperature of the heat exchange tube 21 to determine whether further adjustment is required. The system continuously executes the above steps in a cycle to achieve continuous monitoring and dynamic adjustment of the temperature of the heat exchange tube 21. By continuously adjusting the air volume of the jet port 411 , the system can ensure that each heat exchange tube 21 is maintained within the optimal operating temperature range, thereby improving the overall energy efficiency and stability of the air conditioning system.

[0082] It should be noted that the target temperature in the present invention is set according to the operation requirements of the air conditioning system and the optimal working conditions of the condenser 2. The target temperature can be dynamically adjusted according to the operation of the air conditioning system. The numerical value of the target temperature is not specifically limited in the present invention.

[0083] It should be further explained that T can be set according to actual conditions, such as 5s, 10s, 20s, etc., and even T can be set to 0s. When T is 0s, in step S400, when the temperature of the heat exchange tube 21 is obtained to be the same as the target temperature, the temperature of the heat exchange tube 21 will be immediately re-obtained to achieve uninterrupted monitoring and dynamic adjustment of the temperature of the heat exchange tube 21. The present invention does not limit the specific time of T.

[0084] Preferably, step S300 specifically includes:

[0085] S310: When the temperature of the heat exchange tube 21 is lower than the target temperature, the air volume in the corresponding first air duct 41 is reduced;

[0086] S320: When the temperature of the heat exchange tube 21 is greater than the target temperature, the air volume in the corresponding first air duct 41 is increased.

[0087] When the system detects that the temperature of a heat exchange tube 21 is lower than the target temperature, it means that the current heat dissipation efficiency of the heat exchange tube 21 is higher than the actual demand, or there is overcooling. In order to save energy and avoid the problems that may be caused by overcooling of the condenser 2 (such as icing, reduced energy efficiency, etc.), the system needs to reduce the air volume in the first air duct 41 corresponding to the heat exchange tube 21. By reducing the air volume, the air flow speed can be reduced, the heat exchange amount can be reduced, and the temperature of the heat exchange tube 21 can gradually rise to near the target temperature.

[0088] When the system detects that the temperature of a heat exchange tube 21 is higher than the target temperature, it indicates that the heat dissipation efficiency of the heat exchange tube 21 is currently insufficient and the air volume needs to be increased to improve its heat dissipation capacity. By increasing the air volume in the first air duct 41 corresponding to the heat exchange tube 21, the air flow can be accelerated, the heat exchange efficiency can be increased, and the temperature of the heat exchange tube 21 can be reduced. This helps ensure the stable operation of the air conditioning system and prevent problems such as reduced energy efficiency or equipment damage caused by excessively high temperatures of the heat exchange tube 21.

[0089] Preferably, step S310 specifically includes:

[0090] When the temperature of the heat exchange tube 21 is lower than the target temperature, the opening of the corresponding air valve 412 is reduced.

[0091] By reducing the opening of the air valve 412, the air flow through the heat exchange tube 21 can be reduced, thereby reducing the amount of heat exchange, so that the temperature of the heat exchange tube 21 gradually rises to near the target temperature. Exemplarily, the present invention automatically adjusts the opening of the air valve 412 through the control system. When the system detects that the temperature of a heat exchange tube 21 is lower than the target temperature, it will send a signal to the corresponding actuator, such as the electric air valve 412 or the pneumatic air valve 412, to gradually close or reduce the opening, thereby reducing the air flow through the heat exchange tube 21, achieving precise control of the cooling effect of each heat exchange tube 21, ensuring that the air conditioning system operates in the best state, and improving the heat dissipation efficiency.

[0092] Preferably, step S320 specifically includes:

[0093] When the temperature of the heat exchange tube 21 is greater than the target temperature, the opening of the corresponding air valve 412 is increased.

[0094] By increasing the opening of the air valve 412 corresponding to the heat exchange tube 21, the air flow through the heat exchange tube 21 can be increased, thereby increasing the heat exchange amount and reducing the temperature of the heat exchange tube 21. Exemplarily, the control system of the present invention monitors the temperature of the heat exchange tube 21 in real time and compares it with the preset target temperature. When it is detected that the temperature of a heat exchange tube 21 is higher than the target temperature, the control system sends a signal to the corresponding actuator, such as the electric air valve 412 or the pneumatic air valve 412, to gradually open or increase the opening, thereby increasing the air flow through the heat exchange tube 21, achieving precise control of the cooling effect of each heat exchange tube 21, ensuring that the air conditioning system operates in the best state, and improving the heat dissipation efficiency.

[0095] Preferably, in step S310, before executing "reducing the opening of the corresponding air valve 412", the control method further includes:

[0096] Determine whether the opening of the corresponding air valve 412 is at the minimum opening;

[0097] If not, then the step of “reducing the opening of the corresponding air valve 412 ” is executed; if so, the rotation speed of the fan 31 is reduced.

[0098] When the temperature of the heat exchange tube 21 is lower than the target temperature, first determine whether the opening of the air valve 412 corresponding to the heat exchange tube 21 is at the minimum opening. If the opening of the air valve 412 is not at the minimum opening, gradually reduce the opening of the air valve 412 to reduce the air flow through the heat exchange tube 21, thereby reducing the temperature of the heat exchange tube 21. If the opening of the air valve 412 is already at the minimum opening, and the temperature of the heat exchange tube 21 is still lower than the target temperature, further reduce the air volume of the entire system by reducing the speed of the fan 31. This helps to continue to reduce the temperature of the heat exchange tube 21 while maintaining system stability.

[0099] The method realizes flexible adjustment of heat dissipation control by judging whether the opening of the air valve 412 is at the minimum opening. When there is still room for adjustment of the opening of the air valve 412, the temperature of the heat exchange tube 21 is reduced by reducing the opening of the air valve 412; when the opening of the air valve 412 has reached the limit, the heat dissipation effect is further adjusted by reducing the speed of the fan 31. By accurately controlling the opening of the air valve 412 and the speed of the fan 31, accurate adjustment of the heat dissipation efficiency is achieved, and the energy efficiency of the air conditioning system is improved. The problem of system instability or insufficient air volume caused by excessive reduction of the opening of the air valve 412 is avoided, ensuring the safe operation of the air conditioning system.

[0100] Preferably, in step S320, before executing "increasing the opening of the corresponding air valve 412", the control method further includes:

[0101] Determine whether the opening of the corresponding air valve 412 is at the maximum opening;

[0102] If not, then “increase the opening of the corresponding air valve 412”; if so, increase the rotation speed of the fan 31.

[0103] When the temperature of the heat exchange tube 21 is greater than the target temperature, first determine whether the opening of the air valve 412 corresponding to the heat exchange tube 21 is at the maximum opening. If the judgment result shows that the opening of the air valve 412 is not at the maximum opening, gradually increase the opening of the air valve 412 to increase the air flow through the heat exchange tube 21, thereby improving the heat dissipation efficiency and reducing the temperature of the heat exchange tube 21. If the opening of the air valve 412 is already at the maximum opening, and the temperature of the heat exchange tube 21 is still higher than the target temperature, increase the air volume of the entire system by increasing the speed of the fan 31. This helps to more effectively reduce the temperature of the heat exchange tube 21 while maintaining system stability.

[0104] The method realizes flexible adjustment of heat dissipation control by judging whether the opening of the air valve 412 is at the maximum opening. When there is still room for adjustment of the opening of the air valve 412, the heat dissipation efficiency is improved by increasing the opening of the air valve 412; when the opening of the air valve 412 has reached the limit, the air volume is further increased by increasing the speed of the fan 31 to ensure the heat dissipation effect. By accurately controlling the opening of the air valve 412 and the speed of the fan 31, the heat dissipation efficiency is accurately adjusted, and the energy efficiency of the air conditioning system is improved. The system instability or excessive air volume and high energy consumption caused by excessive increase in the opening of the air valve 412 are avoided, ensuring the stable operation of the air conditioning system.

[0105] Preferably, in step S310, after executing “reducing the speed of the fan 31”, the control method further includes:

[0106] The opening degree of the air valve 412 corresponding to the heat exchange tube 21 having the same target temperature is increased.

[0107] After reducing the speed of the fan 31, check whether there are any heat exchange tubes 21 in the system whose temperature is the same as or close to the target temperature. For these heat exchange tubes 21 with the same temperature as the target, gradually increase the opening of the corresponding air valve 412 to maintain its heat dissipation efficiency. By adjusting the opening of the air valve 412 of different heat exchange tubes 21, overcooling or undercooling of the heat exchange tubes 21 is avoided, which helps to balance the heat dissipation requirements of the entire system.

[0108] Preferably, in step S320, after executing “increasing the speed of the fan 31”, the control method further includes:

[0109] The opening degree of the air valve 412 corresponding to the heat exchange tube 21 having the same target temperature is reduced.

[0110] After increasing the speed of the fan 31, check whether there are any heat exchange tubes 21 in the system whose temperature is the same as or close to the target temperature. For these heat exchange tubes 21 with the same temperature as the target, gradually reduce the opening of the corresponding air valve 412 to maintain its heat dissipation efficiency. By adjusting the opening of the air valve 412 of different heat exchange tubes 21, overcooling or undercooling of the heat exchange tubes 21 is avoided, which helps to balance the heat dissipation requirements of the entire system.

[0111] In addition, the present invention also provides an air conditioner, including a controller, wherein the controller is configured to execute the above control method.

[0112] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A heat dissipation control method for an outdoor unit of an air conditioner, characterized in that: The air conditioner outdoor unit comprises a casing (1), a condenser (2) installed in the casing (1), an air supply device (3) and an air outlet device (4); the air supply device (3) is capable of supplying air into the air outlet device (4); the condenser (2) has a plurality of heat exchange tubes (21) arranged at intervals along a first direction; the air outlet device (4) has jet ports (411) respectively corresponding to the plurality of heat exchange tubes (21); the plurality of jet ports (411) are capable of blowing air towards the corresponding heat exchange tubes (21); and the control method comprises: S100: acquiring the temperatures of the plurality of heat exchange tubes (21) in real time or at set intervals; S200: comparing the temperature of each of the heat exchange tubes (21) with a target temperature; S300: According to the comparison result, the air flow rate of the jet port (411) corresponding to the heat exchange tube (21) is adjusted.

2. The heat dissipation control method of the air conditioner outdoor unit according to claim 1, characterized in that: The air outlet device (4) comprises a plurality of first air ducts (41) which are arranged separately, the plurality of first air ducts (41) are spaced apart and distributed along the first direction and the plurality of first air ducts (41) respectively correspond to the plurality of heat exchange tubes (21), the air inlet end of each first air duct (41) is connected to the air supply device (3), and each first air duct (41) is provided with at least one jet outlet (411), Step S300 specifically includes: S310: when the temperature of the heat exchange tube (21) is lower than the target temperature, reducing the air volume in the first air duct (41) corresponding thereto; S320: When the temperature of the heat exchange tube (21) is greater than the target temperature, the air volume in the first air duct (41) corresponding thereto is increased.

3. The heat dissipation control method of the air conditioner outdoor unit according to claim 2, characterized in that: The air conditioner outdoor unit further comprises an air valve (412) arranged at the air inlet end of the first air duct (41), wherein the air valve (412) is capable of controlling the air volume entering the first air duct (41). Step S310 specifically includes: When the temperature of the heat exchange tube (21) is lower than the target temperature, reducing the opening of the corresponding air valve (412); Step S320 specifically includes: When the temperature of the heat exchange tube (21) is greater than the target temperature, the opening of the corresponding air valve (412) is increased.

4. The heat dissipation control method of the air conditioner outdoor unit according to claim 3, characterized in that: The air supply device (3) comprises a fan (31) and a second air duct (32), the air inlet end of each of the first air ducts (41) is connected to the second air duct (32), and the fan (31) is arranged at the air inlet end of the second air duct (32). In step S310, before executing "reducing the opening of the corresponding air valve (412)", the control method further includes: Determining whether the opening of the corresponding air valve (412) is at a minimum opening; If not, then execute "reduce the opening of the corresponding air valve (412)"; if so, then reduce the speed of the fan (31); and / or In step S320, before executing "increasing the opening of the corresponding air valve (412)", the control method further includes: Determining whether the opening of the corresponding air valve (412) is at a maximum opening; If not, then the step of "increasing the opening of the corresponding air valve (412)" is executed; if so, then the rotation speed of the fan (31) is increased.

5. The heat dissipation control method of the air conditioner outdoor unit according to claim 4, characterized in that: In step S310, after executing "reducing the rotation speed of the fan (31)", the control method further includes: increasing the opening of the air valve (412) corresponding to the heat exchange tube (21) having the same target temperature; and / or In step S320, after executing "increasing the rotation speed of the fan (31)", the control method further comprises: The opening degree of the air valve (412) corresponding to the heat exchange tube (21) having the same target temperature is reduced.

6. The heat dissipation control method of the air conditioner outdoor unit according to claim 1, characterized in that: The control method further comprises: S400: when the acquired temperature of the heat exchange tube (21) is the same as the target temperature, the air flow rate of the jet outlet (411) corresponding to the heat exchange tube (21) is continuously operated for a period of T according to the current air flow rate, and the temperature of the heat exchange tube (21) is acquired again; S500: Repeat steps S200 to S400 according to the re-acquired temperature of the heat exchange tube (21).

7. The heat dissipation control method of the air conditioner outdoor unit according to claim 2, characterized in that: The casing (1) is provided with an air inlet (12) at a position corresponding to the gap between the two first air ducts (41); the first air duct (41) is provided with an air guide plate (42) at the jet port (411); the air guide plate (42) extends from the jet port (411) toward the condenser (2); the air inlet (12) corresponds to the gap between the air guide plates (42) on two adjacent first air ducts (41); the air guide plate (42) can increase the air outlet velocity of the jet port (411) to form a low-pressure area between adjacent first air ducts (41), thereby sucking outside air into the casing (1) through the air inlet (12) and blowing it onto the condenser (2).

8. The heat dissipation control method of the air conditioner outdoor unit according to claim 7, characterized in that: The air guide plate (42) is streamlined in shape.

9. The heat dissipation control method of the air conditioner outdoor unit according to claim 4, characterized in that: The fan (31) is a turbo fan.

10. An air conditioner, characterized in that: The device comprises a controller configured to execute the control method according to any one of claims 1 to 9.

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