Air conditioner and control method thereof

Abstract

The application provides an air conditioner and a control method thereof. The air conditioner comprises an electric heating device and an electric heating driving device. The electric heating driving device is used for driving the electric heating device to rotate. A detection module is arranged around the electric heating device. The control method of the air conditioner is as follows: when the air conditioner is in a refrigeration or dehumidification operation, the detection module detects parameters, and a condensation condition is judged: whether the electric heating device has a condensation risk is judged according to the detection parameters. When the electric heating device has the condensation risk, the electric heating device is driven to rotate by a set angle and is maintained at the angle for a set time. The condensation condition judgment is continuously performed until the temperature field around the electric heating device is uniform and the condensation condition is not met, and the electric heating device is not moved. The application can avoid or reduce the problem of condensation of the electric heating device during the refrigeration or dehumidification operation of the air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning devices, in particular to an air conditioner and a control method thereof. BACKGROUND

[0002] The existing air conditioner indoor unit generally has an auxiliary heating function, that is, an electric heating device is arranged in the air conditioner indoor unit to assist heating and enhance the air conditioning heating effect.

[0003] Generally, the electric heating device is arranged near the evaporator of the indoor unit. For example, the electric heating device of a ceiling-mounted air conditioner indoor unit is generally installed between the evaporator and the cross-flow fan. When the air conditioner is running in cooling mode, indoor air passes through the air inlet of the air conditioner indoor unit, is cooled by the evaporator, and becomes cold air. A part of the cold air passes through the electric heating device and is blown out of the air outlet along with the cross-flow fan. Therefore, when the air conditioner is running in cooling mode, the temperature of the electric heating device decreases rapidly. At the same time, due to the cooling of the air conditioner, a lot of condensed water is condensed on the fins of the evaporator. In actual tests after the air conditioner is turned off after cooling, the humidity of the air in the air duct is very high. Therefore, the electric heating device will produce condensed water on the surface after the air conditioner is turned off. When the air conditioner is used in summer, the air conditioner is frequently turned on for cooling, which can cause more and more condensed water on the electric heating device. When the air speed of the air conditioner is high, the condensed water on the electric heating device can be blown out directly and fall into the indoor space, affecting the user's experience of using the air conditioner. At the same time, the long-term presence of condensed water on the electric heating device poses a certain safety hazard, which can cause oxidation and rust of the metal parts of the electric heating device, shorten its service life, and easily cause the electric heating device to be in a humid state for a long time, resulting in mold growth and causing the air blown out by the air conditioner to have a moldy smell.

[0004] In addition, according to actual experimental verification, when the air conditioner is running in cooling mode, due to the uneven temperature field around the electric heating device and the high humidity inside, the electric heating device will also continuously produce condensed water during the operation of the air conditioner, which will directly drip after a period of accumulation.

[0005] To solve the above technical problems, the existing solutions are as follows:

[0006] 1. After the air conditioner ends cooling, the air conditioner enters the air supply mode within a short period of time, which can increase the temperature of the electric heating device and reduce the possibility of condensed water on the electric heating device. However, the temperature of the electric heating device cannot be increased to completely avoid the problem of condensed water on the electric heating device.

[0007] 2. When the air conditioner is in refrigeration operation, the air conditioner is controlled to be turned off by a remote controller / voice control / APP, etc. The air fan and compressor of the air conditioner are controlled to be turned off according to the program. After the air deflector of the indoor unit is turned off, the indoor air fan is operated at a low speed according to the set speed, and the electric heating device is turned on for a short time, so that the condensate water on the electric heating device is evaporated. After the refrigeration is completed, the electric heating device is turned on to heat and evaporate the condensate water, but the problem of excessive condensate water accumulation and dripping during long-term refrigeration operation of the air conditioner cannot be avoided.

[0008] The above information disclosed in the background section of this specification is only for the purpose of enhancing the understanding of the background of the present application, and therefore, it can include matters known by those skilled in the art. SUMMARY

[0009] The present application aims to provide an air conditioner and a control method thereof, which solve the technical problem of condensate water on the electric heating device caused by different temperatures around the electric heating device during refrigeration or dehumidification operation of the air conditioner.

[0010] The present application provides an air conditioner and a control method thereof:

[0011] A control method of an air conditioner, the air conditioner comprising an electric heating device and an electric heating driving device for driving the electric heating device to rotate, a detection module being arranged around the electric heating device, the control method comprising:

[0012] the air conditioner is in refrigeration or dehumidification operation;

[0013] a condensation condition detection step: the detection module detects parameters;

[0014] a condensation condition judgment step: when the parameters detected by the detection module meet the condensation condition of the electric heating device, the electric heating driving device drives the electric heating device to rotate by a set angle and maintain at the angle for a set time, and then the condensation condition detection step is entered again; when the parameters detected by the detection module do not meet the condensation condition of the electric heating device, the electric heating device is not moved.

[0015] The control method of the air conditioner as described above, the detection module comprising at least two temperature sensors arranged around the electric heating device, the plane formed by the at least two temperature sensors and the rotation axis of the electric heating device being different planes, the control method comprising:

[0016] the air conditioner is in refrigeration or dehumidification operation;

[0017] a condensation condition detection step: the temperature sensor detects temperature;

[0018] The condensation condition judging step: determining the maximum temperature Tmax and the minimum temperature Tmin according to the temperature detected by the temperature sensor; when the difference between the maximum temperature Tmax and the minimum temperature Tmin is higher than the set temperature, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and then enters the condensation condition detecting step; when the difference between the maximum temperature Tmax and the minimum temperature Tmin is lower than the set temperature, the electric heating device is not moved.

[0019] The control method of the air conditioner as described above, the detection module comprises a humidity sensor and at least two temperature sensors arranged around the electric heating device, the planes formed by the at least two temperature sensors and the rotation axis of the electric heating device are different planes, and the control method is:

[0020] The air conditioner is in cooling or dehumidifying operation;

[0021] The condensation condition detecting step: the humidity sensor detects the humidity S, and the temperature sensor detects the temperature;

[0022] The condensation condition judging step: determining the maximum temperature Tmax and the minimum temperature Tmin according to the temperature detected by the temperature sensor, and determining the dew point temperature K according to the maximum temperature Tmax and the humidity S; when the dew point temperature K is higher than the minimum temperature Tmin, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and then enters the condensation condition detecting step; when the dew point temperature K is lower than the minimum temperature Tmin, the electric heating device is not moved.

[0023] The control method of the air conditioner as described above, when the parameters detected by the detection module do not meet the condensation condition of the electric heating device, the air conditioner continues to operate in the set state.

[0024] The control method of the air conditioner as described above, when the electric heating device is not moved, when the operating parameters of the air conditioner change, the air conditioner operates according to the changed operating parameters for a set time, and then enters the condensation condition detecting step.

[0025] The control method of the air conditioner as described above, when the electric heating device is not moved, the angle Wi of the electric heating device corresponding to the operating state, the maximum temperature Tmaxi and the minimum temperature Tmini of the air conditioner is recorded; when the air conditioner is in cooling or dehumidifying operation, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and when the operating state of the air conditioner, the maximum temperature Tmax and the minimum temperature Tmin are the same as the recorded operating state of the air conditioner, the maximum temperature Tmaxi and the minimum temperature Tmini, the electric heating driving device is controlled to drive the electric heating device to rotate to the angle Wi.

[0026] The control method of the air conditioner as described above, when the electric heating device is not moving, records the angle Wj of the electric heating device corresponding to the running state of the air conditioner, the maximum temperature Tmaxj and the minimum temperature Tminj, when the running state of the air conditioner, the maximum temperature Tmaxj and the minimum temperature Tminj are not recorded.

[0027] The control method of the air conditioner as described above, the electric heating device is provided with an electric heating temperature sensor, and the control method is:

[0028] When the electric heating device is not moving, the electric heating temperature sensor detects the temperature TD of the electric heating device, and determines whether to start the electric heating device according to the parameters detected by the detection module and the temperature TD of the electric heating device.

[0029] The control method of the air conditioner as described above, the maximum temperature Tmax around the electric heating device is obtained, when the maximum temperature Tmax - electric heating device temperature TD is higher than the second set temperature, the electric heating device is started and kept, and the maximum temperature Tmax - electric heating device temperature TD is lower than the second set temperature.

[0030] Or, the maximum temperature Tmax and the minimum temperature Tmin around the electric heating device are obtained, the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S, and when the electric heating device temperature TD is lower than the dew point temperature K, the electric heating device is started and kept, and the electric heating device temperature TD is higher than the dew point temperature K.

[0031] An air conditioner applying the control method as described above.

[0032] Compared with the prior art, the air conditioner has the advantages and positive effects that: the air conditioner comprises an electric heating device and an electric heating driving device for driving the electric heating device to rotate, a detection module is arranged around the electric heating device, and the control method is that: the air conditioner is operated in refrigeration or dehumidification; the detection module detects parameters; when the electric heating device meets the condensation condition, the electric heating driving device drives the electric heating device to rotate by a set angle and maintain at the angle for a set time, and then the condensation condition detection step is entered again; when the electric heating device does not meet the condensation condition, the electric heating device is not driven to rotate. The control method of the air conditioner detects whether the electric heating device has the condensation risk through the detection module, drives the electric heating device to rotate by a set angle and maintain at the angle for a set time when the electric heating device has the condensation risk, and judges the condensation condition again until the electric heating device does not move when the temperature field around the electric heating device is uniform and does not meet the condensation condition, at which time the angle of the electric heating device is the anti-condensation angle. The air conditioner can avoid or reduce the problem that the electric heating device condenses during the operation of the air conditioner in refrigeration or dehumidification.

[0033] The air conditioner comprises an electric heating device and an electric heating driving device for driving the electric heating device to rotate, a detection module is arranged around the electric heating device, and the air conditioner is operated in refrigeration or dehumification; the detection module detects parameters; when the electric heating device meets the condensation condition, the electric heating driving device drives the electric heating device to rotate by a set angle and maintain at the angle for a set time; the detection module detects the parameters again until the electric heating device does not move when the parameters do not meet the condensation condition of the electric heating device. The air conditioner detects whether the electric heating device has the condensation risk through the detection module, drives the electric heating device to rotate by a set angle and maintain at the angle for a set time when the electric heating device has the condensation risk, and does not move until the temperature field around the electric heating device is uniform and does not meet the condensation condition, at which time the angle of the electric heating device is the anti-condensation angle. The air conditioner can avoid or reduce the problem that the electric heating device condenses during the operation of the air conditioner in refrigeration or dehumification.

[0034] Other features and advantages of the present application will become more apparent after reading the specific embodiments of the present application in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic diagram of the air conditioner indoor unit of the specific embodiment of the present application.

[0036] Figure 2 is a schematic diagram of the electric heating device of the specific embodiment of the present application.

[0037] Figure 3 is a schematic diagram of the electric heating device and the detection module of the specific embodiment of the present application.

[0038] Figure 4 is a flow chart of a specific embodiment one of the present application.

[0039] Figure 5 is a flow chart of a specific embodiment two of the present application.

[0040] Figure 6 is a flow chart of a specific embodiment three of the present application.

[0041] Figure 7 is a flow chart of a specific embodiment four of the present application.

[0042] Figure 8 、 9 is a flow chart of a specific embodiment five of the present application.

[0043] Figure 10 、 11 is a flow chart of a specific embodiment six of the present application.

[0044] in the figure,

[0045] 1, evaporator;

[0046] 2, electric heating device;

[0047] 3, cross-flow fan;

[0048] 4, detection module;

[0049] 5, electric heating driving device. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present application will be 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 application, and are not intended to limit the protection scope of the present application.

[0051] It should be noted that in the description of the present application, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the direction or positional relationship of the terms based on the direction or positional relationship shown in the drawings, which is only for the purpose of description, and is not intended to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0052] In addition, it needs to be explained that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0054] As shown in Figures 1-3 The air conditioner comprises, in the shell, an evaporator 1, an electric heating device 2 and a cross-flow fan 3 arranged in sequence in the airflow direction.

[0055] In Figure 1 When the air conditioner is running in cooling or dehumidifying mode, the temperatures in the upper space, the lower space, the left side space and the right side space of the electric heating device 2 are not consistent. When the detected temperatures of the two areas around the electric heating device satisfy the following condition: the temperature of the area with lower temperature is lower than the dew point temperature of the area with higher temperature, water condensation will occur between the two temperature areas, i.e. condensate water will condense on the electric heating device. During the operation of the air conditioner, the electric heating device continuously produces condensate water, which will directly drip and be blown out by the cross-flow fan after accumulating for a period of time.

[0056] During the operation of the air conditioner, different operating conditions, for example, air speed, position of the air deflector, operating frequency of the compressor (determined by the ambient temperature and the user-set temperature), result in inconsistent temperature distribution around the electric heating device when the electric heating device is at the same angle.

[0057] During the operation of the air conditioner in cooling or dehumidifying mode, the angle of the electric heating device is very important to the uniformity of the temperature field distribution around the electric heating device. If the electric heating device is at an angle that causes uneven temperature field distribution around the electric heating device, condensation is likely to occur on the electric heating device 2, while if the electric heating device is at an angle that causes uniform temperature field distribution around the electric heating device, condensation on the electric heating device 2 can be avoided or reduced. Therefore, how to determine the anti-condensation position of the electric heating device so that the parameters around the electric heating device do not satisfy the condensation condition is the purpose of the present application.

[0058] The air conditioner comprises the electric heating device 2 and an electric heating driving device 5 for driving the electric heating device 2 to rotate so as to adjust the angle of the electric heating device 2.

[0059] The electric heating device 2 of the air conditioner is driven to rotate by the electric heating driving device 5. The electric heating device 2 is generally rotatably installed on a mounting bracket or a tube plate of the evaporator 1. The electric heating driving device 5 includes a driving motor, for example, a stepping motor, which drives the electric heating device 2 to rotate. The driving motor can directly drive the electric heating device 2 or drive the electric heating device 2 through a gear.

[0060] The electric heating driving device 5 generally drives the electric heating device 2 to alternately rotate in a forward direction and a reverse direction in a rotation range. That is, the electric heating driving device 5 drives the electric heating device 2 to rotate in the forward direction from an initial angle to a terminal angle, which is one rotation of the electric heating device in the rotation range. The electric heating driving device 5 drives the electric heating device 2 to rotate in the reverse direction from the terminal angle to the initial angle, which is one rotation of the electric heating device in the rotation range. In this way, the electric heating wire can be prevented from being wound.

[0061] The air conditioner includes a detection module 4. The detection module 4 is arranged around the electric heating device 2.

[0062] The detection module 4 is arranged at a distance from the electric heating device 2 and is used to detect parameters around the electric heating device 2.

[0063] The detection module 4 can be fixed inside a housing of the air conditioner or can be fixed on the electric heating device 2 and synchronously rotate with the electric heating device 2.

[0064] The detection module 4 is used to detect parameters at at least two positions around the electric heating device 2. The at least two positions are different planes formed by the rotation axis of the electric heating device 4. When the detection module is used to detect parameters at two positions around the electric heating device 2, the two positions are preferably symmetrical positions with respect to the rotation axis.

[0065] Of course, the more positions detected by the detection module 4, the more accurately the temperature field around the electric heating device 2 can be reflected.

[0066] When the air conditioner is in a refrigeration or dehumidification operation, the detection module 4 detects whether the temperature field around the electric heating device is uniform. When the temperature field is within a set deviation range, the risk of condensation is small, and the electric heating device is fixed at a certain angle. When the temperature field is out of the set deviation range, the risk of condensation is large. The electric heating device is driven by the electric heating driving device to rotate by a set angle. The goal is to find a suitable electric heating position to make the temperature field around the electric heating device uniform, avoid or reduce the mixing of cold and hot air around the electric heating device, and prevent or reduce the generation of condensation water and dripping.

[0067] The following is described by means of specific embodiments.

[0068] Embodiment 1

[0069] The embodiment sets the detection module 4 around the electric heating device 2, and the air conditioner further comprises an electric heating driving device 5 for driving the electric heating device 2 to rotate.

[0070] When the air conditioner is in refrigeration or dehumidification operation, the detection module 4 detects parameters of at least two positions around the electric heating device, and the at least two positions are different planes formed with the rotation axis of the electric heating device. Whether the electric heating device 2 meets the condensation condition is determined according to the parameters detected by the detection module 4. When the parameters detected by the detection module 4 meet the condensation condition of the electric heating device 2, there is a risk of condensation, and the angle of the electric heating device 2 needs to be adjusted. The electric heating driving device 5 drives the electric heating device 2 to rotate by a set angle and maintain at the angle for a set time, and then the step of detecting the parameters by the detection module 4 is continued. When the parameters detected by the detection module 4 do not meet the condensation condition of the electric heating device 2, there is no risk of condensation, and the electric heating device is not moved.

[0071] The control method of the air conditioner is as follows.

[0072] The air conditioner is in refrigeration or dehumidification operation.

[0073] The condensation condition detection step: the detection module detects parameters of at least two positions around the electric heating device; the at least two positions are different planes formed with the rotation axis of the electric heating device.

[0074] The condensation condition judgment step: when the electric heating device meets the condensation condition according to the parameters detected by the detection module, the electric heating driving device drives the electric heating device to rotate by a set angle and maintain at the angle for a set time, and then the condensation condition detection step is entered; when the electric heating device does not meet the condensation condition according to the parameters detected by the detection module, the electric heating device is not moved.

[0075] As shown in Figure 4 , the control method of the air conditioner of the embodiment is as follows.

[0076] S1, the air conditioner is in refrigeration or dehumidification operation.

[0077] S2, the detection module detects parameters of at least two positions around the electric heating device. The at least two positions are different planes formed with the rotation axis of the electric heating device.

[0078] S3, whether the electric heating device meets the condensation condition is determined according to the parameters detected by the detection module. When the electric heating device meets the condensation condition, step S4 is entered, otherwise, step S5 is entered.

[0079] S4, the electric heating driving device drives the electric heating device to rotate by a set angle and maintain at the angle for a set time, and then step S2 is entered.

[0080] S5, the electric heating device is not moved. The air conditioner continues to run according to the set state.

[0081] In step S5, when the angle of the electric heating device is explained, the temperature field distribution around the electric heating device is uniform, which does not cause condensation of the electric heating device. Therefore, the electric heating device is not moved, and the air conditioner continues to run according to the set state.

[0082] In some embodiments, in order to avoid the running time of the air conditioner changing the temperature field around the electric heating device, thereby changing the condensation state of the electric heating device, in step S5, the electric heating device is not moved for a period of time, and then enters step S2 again to make a condensation determination, or in step S5, the step S2 is entered in time to make a condensation determination.

[0083] Embodiment two

[0084] In this embodiment, the detection module 4 includes a temperature sensor located around the electric heating device.

[0085] Specifically, the detection module 4 includes at least two temperature sensors arranged around the electric heating device, and the planes formed by the at least two temperature sensors and the rotation axis of the electric heating device are different planes. The temperature sensor is a certain distance away from the electric heating device, which is used to measure the air temperature around the electric heating device.

[0086] In some embodiments, the detection module 4 includes two temperature sensors located in any two of the upper space, lower space, left space and right space of the electric heating device 2.

[0087] In some embodiments, the detection module 4 includes three temperature sensors located in any three of the upper space, lower space, left space and right space of the electric heating device 2.

[0088] In some embodiments, the detection module 4 includes four temperature sensors located in the upper space, lower space, left space and right space of the electric heating device 2.

[0089] Of course, the more the number of temperature sensors, the better the anti-condensation effect.

[0090] In some embodiments, the air conditioner includes a detection module mounting bracket, the detection module 4 is installed on the detection module mounting bracket, and the mounting bracket can be fixed in the air conditioner or fixed on the electric heating device and rotated synchronously with the electric heating device.

[0091] In the air conditioner refrigeration or dehumidification operation, the temperature sensor detects the temperature of multiple locations, determines the maximum temperature Tmax and the minimum temperature Tmin according to the temperature detected by the temperature sensor, when the difference between the maximum temperature Tmax and the minimum temperature Tmin is higher than the set temperature, there is a risk of condensation, the angle of the electric heating device 2 needs to be adjusted, the electric heating driving device 5 drives the electric heating device 2 to rotate a set angle and maintain at the angle for a set time, adjust the windward angle of the electric heating device, then continue the temperature sensor temperature detection step, when the difference between the maximum temperature Tmax and the minimum temperature Tmin is lower than the set temperature, the temperature around the electric heating device tends to be uniform, there is no risk of condensation, the electric heating device is not moved, and the air conditioner can continue to operate according to the set state, otherwise, continue to rotate the electric heating device in the above manner, adjust the windward angle of the electric heating and detect the temperature, until the electric heating device is rotated to an angle where the difference between the maximum temperature Tmax and the minimum temperature Tmin is lower than the set temperature, and there is no risk of condensation.

[0092] The set temperature is any value of 1±0.3℃, preferably 1℃.

[0093] In some embodiments, when the electric heating device 2 is rotated from the initial angle to the maximum angle in sequence, and no electric heating device angle that does not meet the condensation condition of the electric heating device 2 is found, the electric heating device is rotated to the angle of the electric heating device corresponding to the minimum value of the difference between the maximum temperature Tmax and the minimum temperature Tmin, so as to minimize the generation of condensed water.

[0094] In some embodiments, when the electric heating device 2 is rotated from the initial angle to the maximum angle in sequence, and no electric heating device angle that does not meet the condensation condition of the electric heating device 2 is found, the electric heating device 2 can also be reset, the size of the set angle is changed, and the condensation condition detection and condensation condition judgment are performed again until the electric heating device angle without the risk of condensation is found. When multiple set angles are changed and no electric heating device angle that does not meet the condensation condition of the electric heating device 2 is found, the electric heating device is rotated to the angle of the electric heating device corresponding to the minimum value of the difference between the maximum temperature Tmax and the minimum temperature Tmin, so as to minimize the generation of condensed water.

[0095] The control method of the air conditioner is:

[0096] The air conditioner is in refrigeration or dehumidification operation;

[0097] The condensation condition detection step: the temperature sensor detects the temperature;

[0098] Condensation condition judging step: according to the temperature detected by the temperature sensor, determine the maximum temperature Tmax and the minimum temperature Tmin; when the difference between the maximum temperature Tmax and the minimum temperature Tmin is higher than the set temperature, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and then enter the condensation condition detecting step; when the difference between the maximum temperature Tmax and the minimum temperature Tmin is lower than the set temperature, the electric heating device is static.

[0099] As shown in Figure 5 , the control method of the air conditioner of the embodiment is:

[0100] S1, the air conditioner is in cooling or dehumidifying operation.

[0101] S2, the temperature sensor detects the temperature.

[0102] S3, according to the temperature detected by the temperature sensor, determine the maximum temperature Tmax and the minimum temperature Tmin, and calculate the difference between the maximum temperature and the minimum temperature Tmin.

[0103] S4, when the difference between the maximum temperature Tmax and the minimum temperature Tmin is higher than the set temperature, enter step S5, otherwise, enter step S6.

[0104] S5, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and enter step S2.

[0105] S6, the electric heating device is static. The air conditioner continues to operate according to the set state.

[0106] In step S6, when the angle of the electric heating device is explained, the temperature field distribution around the electric heating device is uniform, which will not cause the condensation of the electric heating device, so the electric heating device is static, and the air conditioner continues to operate according to the set state.

[0107] In some embodiments, in order to avoid the change of the temperature field around the electric heating device caused by the operation time of the air conditioner, thereby changing the condensation state of the electric heating device, in step S6, the electric heating device is static for a period of time, and then it can enter step S2 again to make a condensation judgment, or in step S6, enter step S2 for condensation judgment at regular intervals.

[0108] The embodiment adds an electric heating device driving device to the electric heating device, so that the electric heating device can be adjusted according to the system setting during the actual operation of the air conditioner. The temperature sensor arranged around the electric heating device is used to monitor whether the temperature field around the electric heating device is uniform. When the temperature field reaches the set deviation range, the electric heating device is fixed at the angle, and when the temperature field exceeds the set deviation range, the electric heating device is rotated until the position of the electric heating device makes the temperature field around the electric heating device uniform. The embodiment can adjust the angle of the electric heating device according to the operation state of the air conditioner, so as to make the temperature field around the electric heating device uniform, and avoid the condensation water generated by the alternating mixing of cold and hot air around the electric heating device.

[0109] Embodiment three

[0110] In the embodiment, the detection module 4 includes a temperature sensor and a humidity sensor arranged around the electric heating device.

[0111] Specifically, the detection module 4 includes a humidity sensor and at least two temperature sensors arranged around the electric heating device, and the planes formed by the at least two temperature sensors and the rotation axis of the electric heating device are different planes. The temperature sensor is a certain distance away from the electric heating device and is used to measure the air temperature around the electric heating device. The humidity sensor is a certain distance away from the electric heating device and is used to measure the humidity around the electric heating device. Only one humidity sensor is needed.

[0112] In some embodiments, the detection module 4 includes two temperature sensors arranged in any two of the upper space, the lower space, the left space and the right space of the electric heating device 2.

[0113] In some embodiments, the detection module 4 includes three temperature sensors arranged in any three of the upper space, the lower space, the left space and the right space of the electric heating device 2.

[0114] In some embodiments, the detection module 4 includes four temperature sensors arranged in the upper space, the lower space, the left space and the right space of the electric heating device 2.

[0115] Of course, the more temperature sensors, the better the anti-condensation effect.

[0116] In some embodiments, the air conditioner includes a detection module mounting bracket, and the temperature sensor is mounted on the detection module mounting bracket. The mounting bracket can be fixed in the air conditioner or fixed on the electric heating device and rotated synchronously with the electric heating device.

[0117] The installation position of the humidity sensor is not limited, and in order to simplify the structure, the humidity sensor can also be mounted on the mounting bracket.

[0118] In the air conditioner refrigeration or dehumidification operation, the humidity sensor detects the humidity, the multiple position temperature sensor detects the temperature of multiple positions, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S. When the dew point temperature K is higher than the minimum temperature Tmin, there is a risk of condensation, the angle of the electric heating device 2 needs to be adjusted, the electric heating driving device 5 drives the electric heating device 2 to rotate to a set angle and maintain at the angle for a set time, the windward angle of the electric heating device is adjusted, and then the temperature sensor continues to detect the temperature. When the dew point temperature K is lower than the minimum temperature Tmin, the temperature around the electric heating device tends to be uniform, there is no risk of condensation, the electric heating device is stationary, and the air conditioner can continue to operate according to the set state. Otherwise, the electric heating device is rotated in the above-mentioned manner, the windward angle of the electric heating device is adjusted and the temperature and humidity are detected until the electric heating device is rotated to an angle at which the dew point temperature K is lower than the minimum temperature Tmin, and there is no risk of condensation.

[0119] In some embodiments, when the electric heating device 2 is rotated from the initial angle to the maximum angle in sequence, and no electric heating device angle satisfying the condensation condition of the electric heating device 2 is found, the electric heating device is rotated to an angle of the electric heating device corresponding to the minimum value of the difference between the dew point temperature K and the minimum temperature Tmin, so as to reduce the generation of condensed water as much as possible.

[0120] In some embodiments, when the electric heating device 2 is rotated from the initial angle to the maximum angle in sequence, and no electric heating device angle satisfying the condensation condition of the electric heating device 2 is found, the electric heating device 2 can also be reset, the size of the set angle is changed, the condensation condition detection and condensation condition judgment are re-performed, and an electric heating device angle without condensation risk is found. When the multiple set angles are changed, and no electric heating device angle satisfying the condensation condition of the electric heating device 2 is found, the electric heating device is rotated to an angle of the electric heating device corresponding to the minimum value of the difference between the dew point temperature K and the minimum temperature Tmin, so as to reduce the generation of condensed water as much as possible.

[0121] The control method of the air conditioner is:

[0122] The air conditioner is in refrigeration or dehumidification operation;

[0123] The condensation condition detection step: the humidity sensor detects the humidity S, and the temperature sensor detects the temperature;

[0124] Condensation condition judging step: according to the temperature detected by the temperature sensor to determine the maximum temperature Tmax and the minimum temperature Tmin, according to the maximum temperature Tmax and the humidity S to determine the dew point temperature K; when the dew point temperature K is higher than the minimum temperature Tmin, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and then enters the condensation condition detecting step; when the dew point temperature K is lower than the minimum temperature Tmin, the electric heating device is not moved.

[0125] As shown in the control method of the air conditioner of the embodiment, Figure 6

[0126] S1, the air conditioner is in cooling or dehumidifying operation.

[0127] S2, the humidity sensor detects the humidity S, and the temperature sensor detects the temperature.

[0128] S3, according to the temperature detected by the temperature sensor to determine the maximum temperature Tmax and the minimum temperature Tmin, according to the maximum temperature Tmax and the humidity S to determine the dew point temperature K.

[0129] S4, when the dew point temperature K is higher than the minimum temperature Tmin, enter step S5, otherwise, enter step S6.

[0130] S5, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and then enters step S2.

[0131] S6, the electric heating device is not moved. The air conditioner continues to operate according to the set state.

[0132] In step S6, when the angle of the electric heating device is explained, the temperature field distribution around the electric heating device is uniform, which will not cause the condensation of the electric heating device, so the electric heating device is not moved, and the air conditioner continues to operate according to the set state.

[0133] In some embodiments, in order to avoid the change of the temperature field around the electric heating device caused by the operation time of the air conditioner, thereby changing the condensation state of the electric heating device, in step S6, the electric heating device is not moved for a period of time, and then it can enter step S2 again to make a condensation judgment, or in step S6, it enters step S2 to make a condensation judgment.

[0134] ​The embodiment adds an electric heating device driving device to the electric heating device, so that the electric heating device can be adjusted in angle according to system setting during actual operation of the air conditioner. The temperature sensor and the humidity sensor arranged around the electric heating device are used to monitor whether the temperature field around the electric heating device is uniform. When the temperature field reaches a set deviation range, the electric heating device is fixed in angle and does not move. When the temperature field exceeds the set deviation range, the electric heating device is rotated until the position of the electric heating device makes the temperature field around the electric heating device uniform. The embodiment can adjust the angle of the electric heating device according to the operation state of the air conditioner, so as to make the temperature field around the electric heating device uniform, and avoid that the condensation water generated by alternating mixing of cold and hot air around the electric heating device drops.

[0135] Embodiment Four

[0136] When the parameter detected by the detection module does not meet the electric heating device condensation condition, it is indicated that the temperature field around the electric heating device is uniformly distributed, and the electric heating device will not condense. The air conditioner continues to operate in the set state.

[0137] The parameter detected by the detection module does not meet the electric heating device condensation condition specifically includes the following two cases:

[0138] Case One: When the air conditioner includes a temperature sensor, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and when the difference between the maximum temperature Tmax and the minimum temperature Tmin is lower than a set temperature.

[0139] Case Two: When the air conditioner includes a temperature sensor and a humidity sensor, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S, and when the dew point temperature K is lower than the minimum temperature Tmin.

[0140] When the electric heating device is fixed, the air conditioner is operated according to the changed operation parameter for a set time, and then enters the condensation condition detection step. Due to the change of the operation parameter of the air conditioner, the temperature and / or humidity around the electric heating device changes after operation according to the changed operation parameter. In order to avoid condensation, after entering the condensation condition detection step, the temperature condition around the electric heating device is determined again, and whether the electric heating device rotates is determined according to the temperature condition around the electric heating device. In some embodiments, the electric heating device can be rotated by a set angle based on the current angle of the electric heating device. In other embodiments, the electric heating device can be restored to the initial angle, and then the temperature condition around the electric heating device is determined again after entering the condensation condition detection step, and whether the electric heating device rotates is determined according to the temperature condition around the electric heating device.

[0141] The operation parameters of the air conditioner include air speed adjustment, air deflector position adjustment, user set temperature adjustment, and ambient temperature change.

[0142] As shown in Figure 7 Case 2, the control method of the air conditioner of the embodiment is as follows.

[0143] S1, the air conditioner is in cooling or dehumidifying operation.

[0144] S2, the humidity sensor detects humidity S, and the temperature sensor detects temperature.

[0145] S3, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S.

[0146] S4, when the dew point temperature K is higher than the minimum temperature Tmin, step S5 is entered, otherwise, step S6 is entered.

[0147] S5, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and step S2 is entered.

[0148] S6, the electric heating device is stationary. The air conditioner continues to operate according to the set state.

[0149] In step S6, when the angle of the electric heating device is explained, the temperature field distribution around the electric heating device is uniform, which will not cause condensation of the electric heating device. Therefore, the electric heating device is stationary, and the air conditioner continues to operate according to the set state.

[0150] In some embodiments, in order to avoid the change of the temperature field around the electric heating device caused by the operation time of the air conditioner, thereby changing the condensation state of the electric heating device, in step S6, after the electric heating device is stationary for a period of time, the condensation condition detection step can be entered again for a condensation determination, or in step S6, the condensation condition detection step is entered at a fixed time for a condensation determination.

[0151] S7, the operation parameters of the air conditioner change. If yes, step S8 is entered, otherwise, step S6 is entered.

[0152] S8, the air conditioner operates according to the changed operation parameters for a set time, and step S2 is entered.

[0153] In some embodiments, in step S8, in the first cycle of entering the condensation condition detection step, in step S5, the electric heating driving device drives the electric heating device to rotate a set angle, which can continue to rotate a set angle from the current angle, or drive the electric heating device to return to the initial angle, and the subsequent cycles start to rotate from the initial angle.

[0154] The embodiment adds an electric heating device driving device to the electric heating device, so that the electric heating device can be adjusted according to the system setting angle during the actual operation of the air conditioner. The temperature sensor and the humidity sensor arranged around the electric heating device are used to monitor whether the temperature field around the electric heating device is uniform. When the temperature field reaches the set deviation range, the electric heating device is fixed at the angle and does not move. When the temperature field exceeds the set deviation range, the electric heating device is rotated until the position of the electric heating device makes the temperature field around the electric heating device uniform. The embodiment can adjust the angle of the electric heating device according to the operating state of the air conditioner, so as to make the temperature field around the electric heating device uniform, and avoid the condensation water generated by the alternating mixing of cold and hot air around the electric heating device and the dripping of the condensation water. When the temperature field around the electric heating device is uniform and the electric heating device does not move, it is further judged whether the operating parameters of the air conditioner change. When the operating parameters change, the air conditioner re-enters the temperature field uniformity judgment. If it is not uniform, the angle of the electric heating device is adjusted to ensure that the electric heating device is always in the uniform temperature field state.

[0155] Embodiment five

[0156] In order to achieve the fastest anti-condensation effect and avoid trying the anti-condensation position every time the air conditioner is started, the embodiment records the angle of the electric heating device corresponding to the operating state of the air conditioner in the non-condensation risk condition. When the air conditioner is subsequently operated in the operating state, the electric heating device is directly controlled to rotate to the angle.

[0157] Specifically, when the electric heating device does not move, the temperature field around the electric heating device is uniform, and condensation does not occur. The angle of the electric heating device corresponding to the operating state of the air conditioner, the maximum temperature Tmaxi and the minimum temperature Tmini is recorded.

[0158] In some embodiments, the operating state of the air conditioner can include: operating mode, user set temperature, environment temperature, air speed, deflector position, etc.

[0159] When the air conditioner is operated in the refrigeration or dehumidification mode, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor. When the operating state of the air conditioner, the maximum temperature Tmax and the minimum temperature Tmin are the same as the recorded operating state of the air conditioner, the maximum temperature Tmaxi and the minimum temperature Tmini, the electric heating driving device is controlled to drive the electric heating device to rotate to the angle Wi and maintain for a set time. Then, the condensation condition detection step can be entered. Otherwise, the position of the electric heating device is unchanged and the condensation condition detection step is entered.

[0160] When the electric heating device is not moving, the running state of the air conditioner, the angle Wj of the electric heating device corresponding to the maximum temperature Tmaxj and the minimum temperature Tminj is not recorded, and the running state of the air conditioner, the angle Wj of the electric heating device corresponding to the maximum temperature Tmaxj and the minimum temperature Tminj is recorded. When the angle Wj of the electric heating device corresponding to the running state of the air conditioner, the maximum temperature Tmaxj and the minimum temperature Tminj is recorded, it is not necessary to record repeatedly.

[0161] As shown in Figure 8 , taking an air conditioner including a temperature sensor and a humidity sensor as an example, when the air conditioner is first started to run in cooling mode, the control method of the air conditioner of the embodiment is:

[0162] S1, the air conditioner is first started to run in cooling or dehumidifying mode.

[0163] S2, the humidity sensor detects humidity S, and the temperature sensor detects temperature.

[0164] S3, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S.

[0165] S4, when the dew point temperature K is higher than the minimum temperature Tmin, step S5 is entered, otherwise, step S6 is entered.

[0166] S5, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and step S2 is entered.

[0167] S6, the electric heating device is not moving. The air conditioner continues to run according to the set state, and the angle Wi of the electric heating device corresponding to the running state of the air conditioner, the maximum temperature Tmaxi and the minimum temperature Tmini is recorded.

[0168] In step S6, when the angle of the electric heating device is explained, the temperature field distribution around the electric heating device is uniform, which will not cause condensation of the electric heating device. Therefore, the electric heating device is not moving, and the air conditioner continues to run according to the set state.

[0169] In some embodiments, in order to avoid the running time of the air conditioner changing the temperature field around the electric heating device and thus changing the condensation state of the electric heating device, in step S6, after the electric heating device is not moving for a period of time, the condensation condition detection step can be entered again for condensation determination, or in step S6, the condensation condition detection step is entered at a fixed time for condensation determination.

[0170] As shown in Figure 9 , taking an air conditioner including a temperature sensor and a humidity sensor as an example, when the air conditioner is first started to run in cooling mode, the control method of the air conditioner of the embodiment is:

[0171] S1, the air conditioner is not started for the first time to run in the refrigeration or dehumidification mode.

[0172] S2, the temperature sensor detects the temperature.

[0173] S3, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and the running state of the air conditioner is obtained.

[0174] S4, it is judged whether the maximum temperature Tmax, the minimum temperature Tmin and the running state of the air conditioner are the same as the recorded values, if yes, step S5 is entered, otherwise, step S13 is entered.

[0175] S5, the electric heating device is controlled to rotate to the angle Wi corresponding to the recorded values and maintained for a set time.

[0176] S6, the humidity sensor detects the humidity S, and the temperature sensor detects the temperature.

[0177] S7, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S.

[0178] S8, when the dew point temperature K is higher than the minimum temperature Tmin, step S10 is entered, otherwise, step S9 is entered.

[0179] S9, the electric heating device is not moved. The air conditioner continues to run according to the set state.

[0180] S10, the electric heating driving device drives the electric heating device to the initial position.

[0181] S11, the humidity sensor detects the humidity S, and the temperature sensor detects the temperature.

[0182] S12, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S.

[0183] S13, when the dew point temperature K is higher than the minimum temperature Tmin, step S14 is entered, otherwise, step S15 is entered.

[0184] S14, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and step S11 is entered.

[0185] S15, the electric heating device is not moved. The air conditioner continues to run according to the set state.

[0186] S16, judge whether the running state of the air conditioner, the maximum temperature Tmaxj and the minimum temperature Tminj are recorded, if yes, go to step S17, otherwise, go to step S18.

[0187] S17, do not record.

[0188] S18, record the angle Wj of the electric heating device corresponding to the running state of the air conditioner, the maximum temperature Tmaxj and the minimum temperature Tminj.

[0189] The embodiment records the angle W of the electric heating device corresponding to the running state of the air conditioner, the maximum temperature Tmax and the minimum temperature Tmin, when the air conditioner uses the same mode again, the condition determination mode is entered, the running state and the temperature are the same, then the angle of the electric heating device in the recorded state is directly entered for running, and the temperature field determination is performed, otherwise, the initial angle is directly used for temperature field determination.

[0190] Embodiment six

[0191] In order to further avoid the condensation on the electric heating device, an electric heating temperature sensor is arranged on the electric heating device, the electric heating sensor directly detects the temperature of the electric heating device itself, and the sensor of the detection module detects the temperature around the electric heating device.

[0192] When the air conditioner is running in refrigeration or dehumidification, the detection module 4 detects parameters, judges whether the condensation condition of the electric heating device 2 is met according to the parameters detected by the detection module 4, when the parameters detected by the detection module 4 meet the condensation condition of the electric heating device 2, there is a risk of condensation, the angle of the electric heating device 2 needs to be adjusted, the electric heating driving device 5 drives the electric heating device 2 to rotate a set angle and maintain at the angle for a set time, and then the step of detecting the parameters by the detection module 4 continues, when the parameters detected by the detection module 4 do not meet the condensation condition of the electric heating device 2, there is no risk of condensation, the electric heating device is not moved, and the air conditioner can continue to run according to the set state, when the air conditioner continues to run according to the set state, the electric heating temperature sensor detects the temperature TD of the electric heating device, and judges whether to start the electric heating device according to the parameters detected by the detection module and the temperature TD of the electric heating device.

[0193] In some embodiments, the maximum temperature Tmax around the electric heating device is obtained, when the maximum temperature Tmax - the temperature TD of the electric heating device is higher than the second set temperature, there is a risk of condensation, the electric heating device is started and kept to make the maximum temperature Tmax - the temperature TD of the electric heating device lower than the second set temperature, to further avoid condensation.

[0194] In the air conditioner refrigeration or dehumidification operation, the temperature sensor detects the temperature of multiple locations, according to the temperature sensor detects the temperature to determine the maximum temperature Tmax and the minimum temperature Tmin, in the difference of the maximum temperature Tmax and the minimum temperature Tmin is higher than the set temperature, there is a risk of condensation, the need to adjust the angle of the electric heating device 2, the electric heating drive device 5 drive electric heating device 2 rotation set angle and maintain at the angle set time, after continue temperature sensor detects the temperature step, in the difference of the maximum temperature Tmax and the minimum temperature Tmin is lower than the set temperature, there is no risk of condensation, the electric heating device is not moving, the air conditioner continues to run according to the set state. Electric heating temperature sensor detects the temperature of the electric heating device TD, in the maximum temperature Tmax - electric heating device temperature TD is higher than the second set temperature, there is a risk of condensation, open the electric heating device and keep the maximum temperature Tmax - electric heating device temperature TD is lower than the second set temperature, further avoid condensation.

[0195] As Figure 10 shown, the control method of the air conditioner of the embodiment is:

[0196] S1, the air conditioner refrigeration or dehumidification operation.

[0197] S2, temperature sensor detects temperature.

[0198] S3, according to the temperature sensor detects the temperature to determine the maximum temperature Tmax and the minimum temperature Tmin, calculate the difference of the maximum temperature and the minimum temperature Tmin.

[0199] S4, in the difference of the maximum temperature Tmax and the minimum temperature Tmin is higher than the set temperature, enter step S5, otherwise, enter step S6.

[0200] S5, electric heating drive device drive electric heating device rotation set angle and maintain at the angle set time, enter step S2.

[0201] S6, electric heating device is not moving. The air conditioner continues to run according to the set state.

[0202] S7, electric heating temperature sensor detects the temperature of the electric heating device TD.

[0203] S8, the maximum temperature Tmax - electric heating device temperature TD is higher than the second set temperature, if yes, enter step S9, otherwise, enter step S10.

[0204] S9, open the electric heating device and keep the maximum temperature Tmax - electric heating device temperature TD is lower than the second set temperature.

[0205] S10, do not open the electric heating device.

[0206] In some embodiments, the maximum temperature Tmax and the minimum temperature Tmin around the electric heating device are obtained, the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S, when the electric heating device temperature TD is lower than the dew point temperature K, there is a risk of condensation, the electric heating device is turned on and the electric heating device temperature TD is kept higher than the dew point temperature K, further avoiding condensation.

[0207] In the air conditioner refrigeration or dehumidification operation, the humidity sensor detects the humidity, the temperature sensor detects the temperature of multiple positions, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S, when the dew point temperature K is higher than the minimum temperature Tmin, there is a risk of condensation, the angle of the electric heating device 2 needs to be adjusted, the electric heating driving device 5 drives the electric heating device 2 to rotate a set angle and maintain at the angle for a set time, then the temperature sensor continues to detect the temperature, when the dew point temperature K is lower than the minimum temperature Tmin, there is no risk of condensation, the electric heating device is not moved, and the air conditioner continues to operate according to the set state. The electric heating temperature sensor detects the electric heating device temperature TD, when the electric heating device temperature TD is lower than the dew point temperature K, there is a risk of condensation, the electric heating device is turned on and the electric heating device temperature TD is kept higher than the dew point temperature K, further avoiding condensation.

[0208] As shown in Figure 11 , the control method of the air conditioner of the present embodiment is:

[0209] S1, the air conditioner is operated in refrigeration or dehumidification.

[0210] S2, the humidity sensor detects the humidity S, and the temperature sensor detects the temperature.

[0211] S3, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S.

[0212] S4, when the dew point temperature K is higher than the minimum temperature Tmin, step S5 is entered, otherwise, step S6 is entered.

[0213] S5, the electric heating driving device drives the electric heating device to rotate a set angle and maintain at the angle for a set time, and step S2 is entered.

[0214] S6, the electric heating device is not moved. The air conditioner continues to operate according to the set state.

[0215] S7, the electric heating temperature sensor detects the electric heating device temperature TD.

[0216] S8, the electric heating device temperature TD is lower than the dew point temperature K, if yes, step S9 is entered, otherwise, step S10 is entered.

[0217] S9, turn on the electric heating device and keep the electric heating device temperature TD higher than the dew point temperature K.

[0218] S10, do not turn on the electric heating device.

[0219] The embodiment sets the electric heating temperature sensor in the electric heating device, and heats the electric heating temperature to the difference between the maximum ambient temperature Tmax and the electric heating device temperature TD being lower than the second set temperature, or the electric heating device temperature TD being higher than the dew point temperature K, to further avoid the condensation problem on the electric heating device. The embodiment can fully ensure that the electric heating device is not condensed, and has less influence on the air conditioner operation mode.

[0220] The second set temperature is any value of 1±0.3℃, and is preferably 1℃. The electric heating device temperature TD is slightly higher than the dew point temperature K.

[0221] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any person skilled in the art can modify or change the above disclosed technical content to equivalent embodiments. However, any simple modification, equivalent change and modification made to the above embodiment without departing from the technical solution content of the present application, and according to the technical essence of the present application, still belongs to the protection scope of the technical solution of the present application.

Claims

1. A control method of an air conditioner, characterized by, The air conditioner comprises an electric heating device and an electric heating driving device for driving the electric heating device to rotate, and a detection module is arranged around the electric heating device, and the control method is as follows: The air conditioner is in cooling or dehumidifying operation; A condensation condition detection step: the detection module detects parameters; A condensation condition judgment step: when the electric heating device condensation condition is met, the electric heating driving device drives the electric heating device to rotate by a set angle and maintain at the angle for a set time, and then the condensation condition detection step is entered again; when the electric heating device condensation condition is not met, the electric heating device is static; When the electric heating device is static, the running state of the air conditioner, the maximum temperature Tmaxi, the minimum temperature Tmini and the angle Wi of the electric heating device corresponding thereto are recorded; When the air conditioner is in cooling or dehumidifying operation, the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and when the running state of the air conditioner, the maximum temperature Tmax and the minimum temperature Tmin are the same as the recorded running state of the air conditioner, the maximum temperature Tmaxi, the minimum temperature Tmini, the electric heating driving device is controlled to drive the electric heating device to rotate to the angle Wi.

2. The control method of the air conditioner according to claim 1, characterized by, The detection module comprises at least two temperature sensors arranged around the electric heating device, and the planes formed by the at least two temperature sensors and the rotation axis of the electric heating device are different, and the control method is as follows: The air conditioner is in cooling or dehumidifying operation; A condensation condition detection step: the temperature sensor detects temperature; A condensation condition judgment step: the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor; when the difference between the maximum temperature Tmax and the minimum temperature Tmin is higher than a set temperature, the electric heating driving device drives the electric heating device to rotate by a set angle and maintain at the angle for a set time, and then the condensation condition detection step is entered again; when the difference between the maximum temperature Tmax and the minimum temperature Tmin is lower than the set temperature, the electric heating device is static.

3. The control method of the air conditioner according to claim 1, wherein The detection module comprises a humidity sensor and at least two temperature sensors arranged around the electric heating device, and the planes formed by the at least two temperature sensors and the rotation axis of the electric heating device are different, and the control method is as follows: The air conditioner is in cooling or dehumidifying operation; A condensation condition detection step: the humidity sensor detects humidity S, and the temperature sensor detects temperature; A condensation condition judgment step: the maximum temperature Tmax and the minimum temperature Tmin are determined according to the temperature detected by the temperature sensor, and the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S; when the dew point temperature K is higher than the minimum temperature Tmin, the electric heating driving device drives the electric heating device to rotate by a set angle and maintain at the angle for a set time, and then the condensation condition detection step is entered again; when the dew point temperature K is lower than the minimum temperature Tmin, the electric heating device is static.

4. The control method of the air conditioner according to any one of claims 1 to 3, characterized by When the parameters detected by the detection module do not satisfy the condensation condition of the electric heating device, the air conditioner continues to operate in the set state.

5. The control method of the air conditioner according to any one of claims 1 to 3, characterized by When the electric heating device is stationary, the air conditioner operates according to the changed operating parameters for a set time before entering the condensation condition detection step when the operating parameters of the air conditioner change.

6. The control method of the air conditioner according to claim 1, wherein When the electric heating device is stationary, the angle Wj of the electric heating device corresponding to the operating state, the maximum temperature Tmaxj and the minimum temperature Tminj of the air conditioner is recorded when the operating state, the maximum temperature Tmaxj and the minimum temperature Tminj of the air conditioner are not recorded.

7. The control method of the air conditioner according to any one of claims 1 to 3, characterized by, The electric heating device is provided with an electric heating temperature sensor, and the control method is: When the electric heating device is stationary, the electric heating temperature sensor detects the temperature TD of the electric heating device, and determines whether to start the electric heating device according to the parameters detected by the detection module and the temperature TD of the electric heating device.

8. The control method of the air conditioner according to claim 7, characterized by, The maximum temperature Tmax around the electric heating device is obtained, and when the maximum temperature Tmax - electric heating device temperature TD is higher than the second set temperature, the electric heating device is started and kept at a maximum temperature Tmax - electric heating device temperature TD lower than the second set temperature. Alternatively, the maximum temperature Tmax and the minimum temperature Tmin around the electric heating device are obtained, the dew point temperature K is determined according to the maximum temperature Tmax and the humidity S, and when the electric heating device temperature TD is lower than the dew point temperature K, the electric heating device is started and kept at a temperature TD higher than the dew point temperature K.

9. An air conditioner characterized by comprising: The control method according to any one of claims 1-8 is applied.

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