Air conditioner and control method thereof

Abstract

The application provides an air conditioner and a control method thereof, the air conditioner comprising an electric heating device, an electric heating driving device, a detection module and a control module, the electric heating device is first driven by the electric heating driving device to rotate in a rotation range thereof, and a parameter detected by the detection module is acquired, whether a temperature field distribution around the electric heating device at a specific position is uniform is judged according to temperatures T(j) and T(j+180°) of opposite ends of the electric heating device at the specific position, the temperature field distribution around the electric heating device at a minimum value of |T(j)-T(j+180°)| is most uniform, and the minimum value is taken as an anti-condensation angle of the electric heating device, so that generation of condensation can be reduced as much as possible. The anti-condensation angle can be determined by controlling the electric heating device and the detection device to rotate once in the rotation range, without rotating the electric heating device by a set angle at each angle to judge anti-condensation conditions, and sequentially seeking the anti-condensation angle by trial and error, and the application has high anti-condensation efficiency.

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 a program. After the air deflector of the indoor unit is turned off, the indoor air fan is operated at a low speed according to a set speed, and the electric heating device is turned on for a short time to make the temperature of the electric heating device rise and evaporate the condensed water on the electric heating device. After the refrigeration is completed, the electric heating device is turned on to heat and evaporate the condensed water. However, the problem of excessive condensed water accumulated and dropped from the air conditioner during long-term refrigeration operation 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 that the temperature around the electric heating device is different during refrigeration or dehumidification operation of the existing air conditioner, thereby causing condensed water on the electric heating device.

[0010] An air conditioner, comprising:

[0011] an electric heating device;

[0012] an electric heating driving device for driving the electric heating device to rotate;

[0013] a detection module located around the electric heating device and rotating synchronously with the electric heating device;

[0014] a control module for detecting a condensed water condition when the air conditioner is in refrigeration or dehumidification operation, for controlling the electric heating driving device to drive the electric heating device to rotate within a rotation range thereof, and for obtaining parameters detected by the detection module;

[0015] for entering a condensed water condition judgment after the condensed water condition detection is completed, for determining parameters T(j) detected by the detection module corresponding to a plurality of angles W(j) of the electric heating device, for determining parameters T(j+180°) detected by the detection module corresponding to a plurality of angles W(j+180°) of the electric heating device, for determining that the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is an anti-condensed water angle, and for controlling the electric heating driving device to drive the electric heating device to rotate to the anti-condensed water angle.

[0016] The air conditioner described above, wherein the detection module comprises a temperature sensor arranged around the electric heating device.

[0017] The control module is configured to detect the condensation condition when the air conditioner is operating in a cooling or dehumidifying mode, to obtain the temperature detected by the temperature sensor when the electric heating device is driven to rotate by the electric heating driving device within a rotation range of the electric heating device, and to obtain the temperature detected by the temperature sensor when the electric heating device is driven to rotate by the electric heating driving device within the rotation range of the electric heating device.

[0018] The control module is configured to determine the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device, to determine the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device, to determine the minimum value of |T(j)-T(j+180°)|, to determine the angle of the electric heating device corresponding to the minimum value as the anti-condensation angle, and to control the electric heating driving device to drive the electric heating device to rotate to the anti-condensation angle.

[0019] The air conditioner described above, wherein the detection module comprises a humidity sensor and a temperature sensor arranged around the electric heating device, and at least the temperature sensor rotates synchronously with the electric heating device.

[0020] The control module is configured to detect the condensation condition when the air conditioner is operating in a cooling or dehumidifying mode, to obtain the temperature detected by the temperature sensor when the electric heating device is driven to rotate by the electric heating driving device within a rotation range of the electric heating device, and to obtain the temperature detected by the temperature sensor when the electric heating device is driven to rotate by the electric heating driving device within the rotation range of the electric heating device.

[0021] The control module is configured to determine the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device, to determine the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device, to determine the minimum value of |T(j)-T(j+180°)|, to determine the angle of the electric heating device corresponding to the minimum value as the anti-condensation angle, and to control the electric heating driving device to drive the electric heating device to rotate to the anti-condensation angle.

[0022] The air conditioner described above, wherein the control module is configured to determine whether the operating parameter of the air conditioner changes when the electric heating device is located at the anti-condensation angle, and to perform the condensation condition detection after the air conditioner operates according to the changed operating parameter for a set time.

[0023] The air conditioner described above, wherein the control module is configured to obtain the current angle of the electric heating device, and to select the angle W(j) or W(j+180°) of the electric heating device with a small rotation amplitude as the anti-condensation angle.

[0024] A control method of an air conditioner, the air conditioner comprising an electric heating device, an electric heating driving device and a detection module; the electric heating driving device is used to drive the electric heating device to rotate; the detection module is located around the electric heating device and rotates synchronously with the electric heating device; the control method is:

[0025] The air conditioner is in refrigeration or dehumidification operation;

[0026] Condensation condition detection step: controlling the electric heating driving device to drive the electric heating device to rotate in its rotation range, and acquiring the parameters detected by the detection module;

[0027] Condensation condition judgment step: determining the parameters T(j) detected by the detection module corresponding to the angles W(j) of the electric heating device, determining the parameters T(j+180°) detected by the detection module corresponding to the angles W(j+180°) of the electric heating device, determining the minimum value of |T(j)-T(j+180°)|, and determining the angle of the electric heating device corresponding to the minimum value as the anti-condensation angle; the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

[0028] The control method of the air conditioner as described above, the detection module comprises a temperature sensor arranged around the electric heating device, and the control method is:

[0029] The air conditioner is in refrigeration or dehumidification operation;

[0030] Condensation condition detection step: controlling the electric heating driving device to drive the electric heating device to rotate in its rotation range, and acquiring the temperature detected by the temperature sensor;

[0031] Condensation condition judgment step: determining the temperature T(j) detected by the temperature sensor corresponding to the angles W(j) of the electric heating device, determining the temperature T(j+180°) detected by the temperature sensor corresponding to the angles W(j+180°) of the electric heating device, determining the minimum value of |T(j)-T(j+180°)|, and determining the angle of the electric heating device corresponding to the minimum value as the anti-condensation angle; the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

[0032] The control method of the air conditioner as described above, the detection module comprises a temperature sensor arranged around the electric heating device, and the control method is:

[0033] The air conditioner is in refrigeration or dehumidification operation;

[0034] The condensation condition detection step: obtaining the humidity S detected by the humidity sensor; controlling the electric heating driving device to drive the electric heating device to rotate in the rotation range thereof, and obtaining the temperature detected by the temperature sensor;

[0035] The condensation condition judgment step: determining the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device, determining the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device, determining the dew point temperature K according to max[T(j), T(j+180°)] and the humidity S, determining the angle of the electric heating device corresponding to the minimum value of |K-min[T(j), T(j+180°)]| as the anti-condensation angle, and driving the electric heating device to rotate to the anti-condensation angle by the electric heating driving device.

[0036] The control method of the air conditioner as described above, when the electric heating device is located at the anti-condensation angle, judging whether the operation parameter of the air conditioner changes, and when the operation parameter of the air conditioner changes, running according to the changed operation parameter for a set time and then entering the condensation condition detection step.

[0037] The control method of the air conditioner as described above, obtaining the current angle of the electric heating device, and selecting the angle W(j) or W(j+180°) of the electric heating device with a small rotation amplitude as the anti-condensation angle.

[0038] Compared with the prior art, the air conditioner has the advantages and positive effects that: the air conditioner comprises an electric heating device, an electric heating driving device, a detection module and a control module, the electric heating driving device is used to drive the electric heating device to rotate, the detection module is located around the electric heating device and rotates synchronously with the electric heating device, the control module is used to detect the condensation condition when the air conditioner is running in refrigeration or dehumidification, to acquire the parameters detected by the detection module when the electric heating driving device drives the electric heating device to rotate in the rotation range of the electric heating device, to determine the parameters T(j) detected by the detection module corresponding to the angles W(j) of the electric heating devices, to determine the parameters T(j+180°) detected by the detection module corresponding to the angles W(j+180°) of the electric heating devices, to determine that the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is the anti-condensation angle, and to control the electric heating driving device to drive the electric heating device to rotate to the anti-condensation angle. The air conditioner drives the electric heating device to rotate in the rotation range of the electric heating device through the electric heating driving device, acquires the parameters detected by the detection module, determines whether the temperature field distribution around the electric heating device is uniform at a specific position of the electric heating device according to the temperatures T(j) and T(j+180°) at the opposite ends of the electric heating device at the specific position, and determines that the temperature field distribution around the electric heating device is most uniform at the angle corresponding to the minimum value of |T(j)-T(j+180°)|, which is used as the anti-condensation angle of the electric heating device, so that the generation of condensation can be reduced as much as possible. The air conditioner can avoid or reduce the problem of condensation of the electric heating device during the refrigeration or dehumidification of the air conditioner. The air conditioner can determine the anti-condensation angle by rotating the electric heating device and the detection device once in the rotation range, and does not need to rotate the electric heating device to a set angle to determine the anti-condensation condition at each angle, and to find the anti-condensation angle by trial and error, so that the anti-condensation efficiency is high.

[0039] The control method of the air conditioner is as follows: when the air conditioner is in refrigeration or dehumidification operation; a condensation condition detection step: controlling an electric heating driving device to drive an electric heating device to rotate in a rotation range thereof, and obtaining parameters detected by a detection module; a condensation condition judgment step: determining parameters T(j) detected by the detection module corresponding to angles W(j) of the electric heating devices, determining parameters T(j+180°) detected by the detection module corresponding to angles W(j+180°) of the electric heating devices, determining that the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is an anti-condensation angle, and driving the electric heating device to rotate to the anti-condensation angle by the electric heating driving device. The air conditioner of the present application first drives the electric heating device to rotate in the rotation range thereof by the electric heating driving device, and obtains the parameters detected by the detection module. According to the temperatures T(j) and T(j+180°) at the opposite ends of the electric heating device at a specific position, it is determined whether the temperature field distribution around the electric heating device at the specific position is uniform. The temperature field distribution around the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is the most uniform, which is used as the anti-condensation angle of the electric heating device, so that the generation of condensation can be reduced as much as possible. The present application can avoid or reduce the problem of condensation of the electric heating device during the refrigeration or dehumidification operation of the air conditioner. The anti-condensation angle can be determined by rotating the electric heating device and the detection device in the rotation range once, without rotating the electric heating device to each angle to determine the anti-condensation condition, and sequentially searching for the anti-condensation angle. The anti-condensation efficiency of the present application is high.

[0040] Other features and advantages of the present application will become more apparent after reading the specific embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a schematic diagram of an indoor unit of the air conditioner according to an embodiment of the present application.

[0042] Figure 2 is a schematic diagram of an electric heating device according to an embodiment of the present application.

[0043] Figure 3 is a schematic diagram of an electric heating device and a detection module according to an embodiment of the present application.

[0044] Figure 4 is a side view of Figure 3

[0045] Figure 5 is a flowchart of the embodiment one of the present application.

[0046] Figure 6 is a flowchart of the embodiment two of the present application.

[0047] Figure 7 is a flowchart of the embodiment three of the present application.​

[0048] In the drawings,

[0049] 1. an evaporator;

[0050] 2. an electric heating device;

[0051] 3. a cross-flow fan;

[0052] 4. a detection module;

[0053] 5. an electric heating driving device. DETAILED DESCRIPTION

[0054] 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 the 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.

[0055] It should be noted that, in the description of the present application, the terms of direction or positional relationship such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not 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 a limitation of 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.

[0056] In addition, it should also be noted 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, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0057] 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.

[0058] As Figures 1-4 shown, the air conditioner comprises an evaporator 1, an electric heating device 2 and a cross-flow fan 3 arranged in sequence in the airflow direction in the shell.

[0059] In Figure 1In the shown embodiment, the temperature of the upper space, the lower space, the left space and the right space of the electric heating device 2 is not consistent when the air conditioner is in cooling or dehumidifying operation. When the detected temperature of the two areas around the electric heating device is as follows: the temperature of the area with low temperature around the electric heating device is lower than the dew point temperature of the area with high temperature around the electric heating device, water condensation will occur between the two temperature areas, i.e. condensate water will condense on the electric heating device. The electric heating device will continuously generate condensate water during the operation of the air conditioner, and the condensate water will directly drip and be blown out by the cross-flow fan after accumulation for a period of time.

[0060] During the operation of the air conditioner, different operating states, such as the air speed, the position of the air deflector, and the 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.

[0061] During the operation of the air conditioner, 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 will easily 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 meet the condensation condition is the purpose of the present application.

[0062] The air conditioner comprises an electric heating device 2 and an electric heating driving device 5 for driving the electric heating device 2 to rotate to adjust the angle of the electric heating device 2.

[0063] 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, and the electric heating driving device 5 comprises a driving motor, such as 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.

[0064] The electric heating driving device 5 generally drives the electric heating device 2 to alternately rotate in the forward direction and the reverse direction within a rotation range to avoid the entanglement of the electric heating wires.

[0065] The air conditioner comprises a detection module 4 located around the electric heating device 2.

[0066] The detection module 4 is at a certain distance from the electric heating device 2 and is used to detect the parameters around the electric heating device 2.

[0067] In some embodiments, the detection module 4 is fixed on the electric heating device 2 and rotates synchronously with the electric heating device 2. The detection module 4 is installed on the electric heating device 2 through a mounting bracket.

[0068] In order to reduce the cost, the detection module 4 is only provided one, and the purpose of the present application can also be achieved.

[0069] In other embodiments, the detection module 4 can also be driven by other driving mechanisms, as long as the detection module 4 is synchronous with the electric heating device.

[0070] The following is described by specific embodiments:

[0071] Embodiment one

[0072] The air conditioner comprises an electric heating device, an electric heating driving device, a detection module and a control module.

[0073] The electric heating driving device is used to drive the electric heating device to rotate.

[0074] The detection module is located around the electric heating device and rotates synchronously with the electric heating device.

[0075] The control module is used to detect the condensation condition when the air conditioner is running in refrigeration or dehumidification mode, and is used to control the electric heating driving device to drive the electric heating device and the detection module to rotate in the rotation range thereof, and obtain the parameters detected by the detection module.

[0076] In some embodiments, the electric heating driving device drives the electric heating device and the detection module to rotate at a constant speed V in the rotation range thereof, and the detection module detects the parameters in real time. The parameters detected by the detection module at a plurality of angles Wj and W(j+180°) are selected.

[0077] Wherein, the angle Wj is an angle between the initial angle and the terminal angle / 2.

[0078] For example, the rotation angle of the electric heating device is 0-360 degrees, and the initial angle of the electric heating device is defined as 0 degrees when the electric heating device starts to rotate, and the terminal angle is defined as 360 degrees when the electric heating device stops rotating during the process of rotating forward and reversing, and the angle Wj is an angle between 0-180 degrees.

[0079] In some embodiments, the rotation angle range of the electric heating device is divided into n angles, and the size of a single angle is D, and the detection module detects the parameters when the electric heating device rotates at each angle. At this time, the electric heating driving device drives the electric heating device to rotate at a constant speed V in the rotation range thereof, or is temporarily stopped at each angle.

[0080] The control module is used to enter the condensation condition judgment after the condensation condition detection is completed, to determine the parameter T(j) detected by the detection module corresponding to the angle W(j) of the electric heating device, to determine the parameter T(j+180°) detected by the detection module corresponding to the angle W(j+180°) of the electric heating device, to determine the minimum value of |T(j)-T(j+180°)|, and to determine the angle of the electric heating device corresponding to the minimum value as the anti-condensation angle, and to control the electric heating driving device to drive the electric heating device to rotate to the anti-condensation angle.

[0081] The anti-condensation angle can be W(j) or W(j+180°) corresponding to the minimum value of |T(j)-T(j+180°)|.

[0082] In some embodiments, the control module is used to obtain the current angle of the electric heating device, to select the angle W(j) or W(j+180°) of the electric heating device with a small rotation amplitude as the anti-condensation angle, to reduce the rotation amplitude of the electric heating device, to save electric energy, and to reduce the rotation noise.

[0083] The control module is used to control the electric heating driving device to drive the electric heating device and the detection device to rotate from the initial angle to the terminal angle in the condensation condition detection, to obtain the parameter detected by the detection module, or to rotate from the terminal angle to the initial angle, to obtain the parameter detected by the detection module, to comprehensively detect the parameters around the electric heating device, and to improve the accuracy.

[0084] The control module is used to determine whether the operating parameters of the air conditioner change when the electric heating device is at the anti-condensation angle, and to perform the condensation condition detection after the air conditioner operates according to the changed operating parameters for a set time.

[0085] The operating parameters of the air conditioner include the air speed, the position of the air deflector, the operating frequency of the compressor (related to the user-set temperature and the ambient temperature), and the like.

[0086] Due to the change of the operating parameters of the air conditioner, the parameters around the electric heating device change after the air conditioner operates according to the changed operating parameters, so that the condensation condition detection step is entered to re-determine the anti-condensation angle of the electric heating device to ensure that the electric heating device is always at the anti-condensation angle with a uniform temperature field.

[0087] The embodiment first detects the condensation condition when the air conditioner is cooling or dehumidifying: the electric heating driving device drives the electric heating device and the detection module rotates in its rotation range, and the parameter detected by the detection module is obtained; after the condensation condition detection is completed, the condensation condition is determined: the parameter T(j) detected by the detection module corresponding to the angle W(j) of the electric heating device is determined, the parameter T(j+180°) detected by the detection module corresponding to the angle W(j+180°) of the electric heating device is determined, whether the temperature field distribution around the electric heating device is uniform is reflected by the size of |T(j)-T(j+180°)|, the smaller the difference is, the more uniform the temperature field distribution is, and the smaller the risk of condensation of the electric heating device is, therefore, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is the anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle. The anti-condensation angle found by the embodiment can ensure that the temperature field distribution around the electric heating is uniform, and can avoid or reduce the condensation of the electric heating device.

[0088] The control method of the air conditioner is:

[0089] The air conditioner is cooled or dehumidified;

[0090] The condensation condition detection step: the electric heating driving device drives the electric heating device and the detection module rotates in its rotation range, and the parameter detected by the detection module is obtained;

[0091] The condensation condition determination step: the parameter T(j) detected by the detection module corresponding to the angle W(j) of the electric heating device is determined, the parameter T(j+180°) detected by the detection module corresponding to the angle W(j+180°) of the electric heating device is determined, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is the anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

[0092] In the air conditioner refrigeration or dehumidification operation, the electric heating driving device drives the electric heating device and the detection module rotates in its rotation range, the parameters detected by the detection module are obtained, the parameters T(j) detected by the detection module corresponding to the angle W(j) of the electric heating device are determined, the parameters T(j+180°) detected by the detection module corresponding to the angle W(j+180°) of the electric heating device are determined, the temperature field around the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is the most uniform, therefore, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is selected as the anti-condensation angle, and the electric heating device is controlled to rotate to the anti-condensation angle, which can ensure the uniform distribution of the temperature field around the electric heating device, avoid or reduce the alternating mixing of cold and hot air around the electric heating device to cause the uneven temperature field, and avoid or reduce the condensation water generated by the electric heating device and dripping.

[0093] As shown in Figure 5 , the control method of the air conditioner of the embodiment is:

[0094] S1, the air conditioner is in refrigeration or dehumidification operation.

[0095] S2, the electric heating driving device drives the electric heating device and the detection module to rotate in its rotation range, and the parameters detected by the detection module are obtained.

[0096] S3, the parameters T(j) detected by the detection module corresponding to the angle W(j) of the electric heating device are determined, and the parameters T(j+180°) detected by the detection module corresponding to the angle W(j+180°) of the electric heating device are determined.

[0097] S4, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is determined as the anti-condensation angle.

[0098] S5, the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

[0099] In step S5, the electric heating device is at the anti-condensation angle, and the temperature field around the electric heating device is uniformly distributed, which will not cause the electric heating device to condense.

[0100] In some embodiments, in the condensation condition detection, the electric heating driving device drives the electric heating device to rotate from the initial angle to the terminal angle, or the electric heating driving device drives the electric heating device to rotate from the terminal angle to the initial angle, and the parameters detected by the detection module are obtained. The parameters of the electric heating device at a plurality of angles in the entire rotation range are detected to improve the accuracy.

[0101] In some embodiments, when the electric heating device is located at the anti-condensation angle, it is determined whether the operating parameter of the air conditioner changes, and when the operating parameter of the air conditioner changes, the air conditioner is operated according to the changed operating parameter for a set time before entering the condensation condition detection step.

[0102] The operating parameter of the air conditioner includes the air speed, the position of the air deflector, the operating frequency of the compressor (related to the user-set temperature and the ambient temperature), and the like.

[0103] Due to the change of the operating parameter of the air conditioner, the parameter around the electric heating device changes after the air conditioner is operated according to the changed operating parameter. In order to avoid condensation, the anti-condensation angle of the electric heating device is re-determined after entering the condensation condition detection step, so as to ensure that the electric heating device is always located at the anti-condensation angle with uniform temperature field.

[0104] Embodiment Two

[0105] In this embodiment, the detection module 4 includes a temperature sensor located around the electric heating device.

[0106] 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.

[0107] The temperature sensor is installed on the electric heating device through a support and rotates synchronously with the electric heating device.

[0108] The control module is used to detect the condensation condition when the air conditioner is operated in cooling or dehumidifying mode, and is used to control the electric heating driving device to drive the electric heating device and the temperature sensor to rotate in the rotation range thereof and acquire the temperature detected by the temperature sensor.

[0109] In some embodiments, the electric heating driving device drives the electric heating device and the temperature sensor to rotate at a set speed V in the rotation range thereof at a constant speed, and the temperature sensor detects the temperature in real time. The temperature detected by the temperature sensor at a plurality of angles Wj and W(j+180°) of the electric heating module is selected.

[0110] The angle Wj is an angle between the initial angle and the terminal angle / 2.

[0111] For example, the rotation angle of the electric heating device is 0-360 degrees, the initial angle of the electric heating device is defined as 0 degrees at the beginning of rotation and the terminal angle of the electric heating device is defined as 360 degrees at the stop of rotation during the positive rotation and the reverse rotation of the electric heating device, and the angle Wj is an angle between 0-180 degrees.

[0112] In some embodiments, the rotation angle range of the electric heating device is divided into n angles, and the size of each angle is D. When the electric heating device is at each angle, the sensor detects the temperature. At this time, the electric heating driving device drives the electric heating device to rotate at a constant speed V in its rotation range, or to pause for a short time at each angle.

[0113] The control module is used to enter the condensation condition judgment after the condensation condition detection is completed, to determine the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device, to determine the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device, and to determine that the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is the anti-condensation angle. The electric heating driving device is controlled to drive the electric heating device to rotate to the anti-condensation angle.

[0114] The anti-condensation angle can be W(j) or W(j+180°) corresponding to the minimum value of |T(j)-T(j+180°)|.

[0115] In some embodiments, the control module is used to obtain the current angle of the electric heating device, and to select the angle W(j) or W(j+180°) of the electric heating device with a small rotation amplitude as the anti-condensation angle, so as to reduce the rotation amplitude of the electric heating device, save electric energy, and reduce the rotation noise.

[0116] The control module is used to control the electric heating driving device to drive the electric heating device and the detection device to rotate from the initial angle to the terminal angle in the condensation condition detection, to obtain the temperature detected by the temperature sensor, or to rotate from the terminal angle to the initial angle, to obtain the temperature detected by the temperature sensor. To comprehensively detect the temperature around the electric heating device and improve the accuracy.

[0117] The control module is used to determine whether the operating parameters of the air conditioner change when the electric heating device is at the anti-condensation angle, and to perform the condensation condition detection after the air conditioner operates according to the changed operating parameters for a set time when the operating parameters of the air conditioner change.

[0118] The operating parameters of the air conditioner include the air speed, the position of the air deflector, the operating frequency of the compressor (related to the user-set temperature and the ambient temperature), etc.

[0119] Due to the change of the operating parameters of the air conditioner, the parameters around the electric heating device change after the air conditioner operates according to the changed operating parameters. In order to avoid condensation, the anti-condensation angle of the electric heating device is determined again after entering the condensation condition detection step, so as to ensure that the electric heating device is always at the anti-condensation angle with uniform temperature field.

[0120] The embodiment first detects the condensation condition when the air conditioner is cooling or dehumidifying: the temperature sensor detects the temperature when the electric heating device and the temperature sensor are driven to rotate in the rotation range of the electric heating device by the electric heating driving device; after the condensation condition detection is completed, the condensation condition is determined: the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device is determined, the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device is determined, whether the temperature field distribution around the electric heating device is uniform is reflected by the size of |T(j)-T(j+180°)|, the smaller the difference is, the more uniform the temperature field distribution is, and the smaller the risk of condensation of the electric heating device is, therefore, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is the anti-condensation angle, and the electric heating device is driven to rotate to the anti-condensation angle by the electric heating driving device. The anti-condensation angle found by the embodiment can ensure that the temperature field distribution around the electric heating device is uniform, and can avoid or reduce the condensation of the electric heating device.

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

[0122] The air conditioner is cooled or dehumidified;

[0123] The condensation condition detection step: the temperature detected by the temperature sensor is obtained when the electric heating device and the temperature sensor are driven to rotate in the rotation range of the electric heating device by the electric heating driving device;

[0124] The condensation condition determination step: the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device is determined, the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device is determined, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is the anti-condensation angle, and the electric heating device is driven to rotate to the anti-condensation angle by the electric heating driving device.

[0125] In the air conditioner refrigeration or dehumidification operation, the electric heating driving device drives the electric heating device and the temperature sensor to rotate in its rotation range, the temperature detected by the temperature sensor is obtained, the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device is determined, the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device is determined, the temperature field around the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is the most uniform, therefore, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is selected as the anti-condensation angle, and the electric heating device is controlled to rotate to the anti-condensation angle, which can ensure the uniform distribution of the temperature field around the electric heating device, avoid or reduce the alternating mixing of cold and hot air around the electric heating device to cause the uneven temperature field, and avoid or reduce the condensation water generated by the electric heating device and dripping.

[0126] As Figure 6 shown, the control method of the air conditioner of the embodiment is:

[0127] S1, the air conditioner is in refrigeration or dehumidification operation.

[0128] S2, the electric heating driving device drives the electric heating device and the temperature sensor to rotate in its rotation range, and the temperature detected by the temperature sensor is obtained.

[0129] S3, the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device is determined, and the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device is determined.

[0130] S4, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is determined as the anti-condensation angle.

[0131] S5, the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

[0132] In step S5, the electric heating device is at the anti-condensation angle, the temperature field around the electric heating device is uniformly distributed, and the electric heating device will not condense.

[0133] In some embodiments, in the condensation condition detection, the electric heating driving device drives the electric heating device to rotate from the initial angle to the terminal angle, and the temperature detected by the temperature sensor is obtained, or from the terminal angle to the initial angle, and the temperature detected by the temperature sensor is obtained. The temperature of the electric heating device at several angles in all rotation ranges is detected to improve the accuracy.

[0134] In some embodiments, when the electric heating device is located at the anti-condensation angle, it is determined whether the operating parameter of the air conditioner changes, and when the operating parameter of the air conditioner changes, the air conditioner is operated according to the changed operating parameter for a set time before entering the condensation condition detection step.

[0135] The operating parameter of the air conditioner includes the air speed, the position of the air deflector, the operating frequency of the compressor (related to the user-set temperature and the ambient temperature), etc.

[0136] Due to the change of the operating parameter of the air conditioner, the temperature around the electric heating device changes after the air conditioner is operated according to the changed operating parameter. In order to avoid condensation, the anti-condensation angle of the electric heating device is re-determined after entering the condensation condition detection step, so as to ensure that the electric heating device is always at the anti-condensation angle with uniform temperature field.

[0137] Embodiment Three

[0138] In this embodiment, the detection module 4 includes a temperature sensor and a humidity sensor located around the electric heating device.

[0139] 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.

[0140] The temperature sensor is installed on the electric heating device through a support and rotates synchronously with the electric heating device.

[0141] 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.

[0142] The installation position of the humidity sensor is not limited, and the humidity sensor can be fixedly installed in the air conditioner. Of course, the humidity sensor can also be installed on the installation support and rotate synchronously with the electric heating device.

[0143] The control module is used to detect the condensation condition when the air conditioner is operating in cooling or dehumidifying mode: to obtain the humidity S detected by the humidity sensor; and to control the electric heating driving device to drive the electric heating device and the temperature sensor to rotate at a set speed V in the rotation range thereof, and to obtain the temperature detected by the temperature sensor.

[0144] In some embodiments, the electric heating driving device drives the electric heating device and the temperature sensor to rotate at a set speed V in the rotation range thereof, and the temperature sensor detects the temperature in real time. The temperature detected by the temperature sensor at the angles Wj and W(j+180°) of the electric heating module is selected.

[0145] The angle Wj is an angle between the initial angle and the terminal angle / 2.

[0146] For example, the rotation angle of the electric heating device is 0-360 degrees, and the initial angle of the electric heating device is defined as 0 degrees when the electric heating device starts to rotate and the terminal angle is defined as 360 degrees when the electric heating device stops rotating. The angle Wj is an angle between 0-180 degrees.

[0147] In some embodiments, the rotation angle range of the electric heating device is divided into n angles, and the size of each angle is D. The temperature sensor detects the temperature when the electric heating device rotates at each angle. At this time, the electric heating driving device drives the electric heating device to rotate at a constant speed V in its rotation range, or the electric heating device is temporarily stopped at each angle.

[0148] The control module is used to determine the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device, to determine the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device, to determine the dew point temperature K according to max[T(j), T(j+180°)] and the humidity S, to determine the minimum value of |K-min[T(j), T(j+180°)]|, and to determine the angle of the electric heating device corresponding to the minimum value as the anti-condensation angle, and to control the electric heating driving device to drive the electric heating device to rotate to the anti-condensation angle.

[0149] The anti-condensation angle can be W(j) or W(j+180°) corresponding to the minimum value of |K-min[T(j), T(j+180°)]|.

[0150] In some embodiments, the control module is used to obtain the current angle of the electric heating device, to select the angle W(j) or W(j+180°) of the electric heating device with a small rotation amplitude as the anti-condensation angle, to reduce the rotation amplitude of the electric heating device, to save electric energy and to reduce the rotation noise.

[0151] The control module is used to control the electric heating driving device to drive the electric heating device and the detection device to rotate from the initial angle to the terminal angle, to obtain the temperature detected by the temperature sensor, or to rotate from the terminal angle to the initial angle, to obtain the temperature detected by the temperature sensor. To comprehensively detect the temperature around the electric heating device and improve the accuracy.

[0152] The control module is used to determine whether the operating parameters of the air conditioner have changed when the electric heating device is located at the anti-condensation angle, and to perform condensation condition detection after the air conditioner operates according to the changed operating parameters for a set time.

[0153] The operation parameters of the air conditioner include air speed, position of a deflector, operation frequency of a compressor (related to user-set temperature and ambient temperature), etc.

[0154] Due to the change of the operation parameters of the air conditioner, the parameters around the electric heating device change after operation according to the changed operation parameters. In order to avoid condensation, the anti-condensation angle of the electric heating device is determined again after the condensation condition detection step, so as to ensure that the electric heating device is always at the anti-condensation angle with uniform temperature field.

[0155] In the air conditioner refrigeration or dehumidification, first, the condensation condition detection is performed: the humidity S detected by the humidity sensor is obtained, the temperature sensor is controlled to rotate in its rotation range, and the temperature detected by the temperature sensor is obtained; after the condensation condition detection is completed, the condensation condition judgment is performed: the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device is determined, the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device is determined, the dew point temperature K is determined according to max[T(j), T(j+180°)] and the humidity S, whether the temperature field distribution around the electric heating device is uniform is reflected by the size of |K-min[T(j), T(j+180°)]|, the smaller the difference, the more uniform the temperature field distribution, and the smaller the risk of condensation of the electric heating device; therefore, the angle of the electric heating device corresponding to the minimum value of |K-min[T(j), T(j+180°)]| is determined as the anti-condensation angle, and the electric heating driving device is controlled to drive the electric heating device to rotate to the anti-condensation angle. The anti-condensation angle found in the embodiment can ensure that the temperature field distribution around the electric heating device is uniform, and can avoid or reduce condensation of the electric heating device.

[0156] The control method of the air conditioner is:

[0157] The air conditioner is refrigerated or dehumidified;

[0158] The condensation condition detection step: the humidity S detected by the humidity sensor is obtained, the temperature sensor is controlled to rotate in its rotation range, and the temperature detected by the temperature sensor is obtained;

[0159] The dew condensation condition determining step is: determining the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the plurality of electric heating devices, determining the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the plurality of electric heating devices, determining the dew point temperature K according to max[T(j), T(j+180°)] and the humidity S; determining the angle of the electric heating device corresponding to the minimum value of |K-min[T(j), T(j+180°)]| as the anti-dew condensation angle, and driving the electric heating device to rotate to the anti-dew condensation angle by the electric heating driving device.

[0160] In the air conditioner refrigeration or dehumidification operation, the humidity detected by the humidity sensor is obtained, the temperature detected by the temperature sensor is obtained when the electric heating device and the temperature sensor are driven to rotate in the rotation range by the electric heating driving device, the humidity and the temperature can reflect whether the temperature field around the electric heating device is uniform, the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the plurality of electric heating devices is determined, the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the plurality of electric heating devices is determined, and the dew point temperature K is determined according to max[T(j), T(j+180°)] and the humidity S; when |K-min[T(j), T(j+180°)]| is the minimum, it indicates that the temperature field around the electric heating device is the most uniform, therefore, the angle of the electric heating device corresponding to the minimum value of |K-min[T(j), T(j+180°)]| is selected as the anti-dew condensation angle, and the electric heating device is driven to rotate to the anti-dew condensation angle, which can ensure that the temperature field around the electric heating device is uniform, avoid or reduce the temperature field around the electric heating device caused by the alternating mixing of cold and hot air, and avoid or reduce the electric heating device from generating condensation water and dripping.

[0161] As shown in Figure 7 , the control method of the air conditioner of the embodiment is:

[0162] S1, the air conditioner is in refrigeration or dehumidification operation.

[0163] S2, obtaining the humidity S detected by the humidity sensor; controlling the electric heating device and the temperature sensor to rotate in the rotation range by the electric heating driving device, and obtaining the temperature detected by the temperature sensor.

[0164] S3, determining the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the plurality of electric heating devices, determining the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the plurality of electric heating devices, and determining the dew point temperature K according to max[T(j), T(j+180°)] and the humidity S.

[0165] S4, determine the minimum value of |K-min[T(j), T(j+180°)]| corresponding to the angle of the electric heating device as the anti-condensation angle.

[0166] S5, the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

[0167] In step S5, the anti-condensation angle of the electric heating device, the temperature field distribution around the electric heating device is uniform, which will not cause the electric heating device to condense.

[0168] In some embodiments, in the condensation condition detection, the temperature detected by the temperature sensor is obtained when the electric heating driving device drives the electric heating device to rotate from the initial angle to the termination angle, or the temperature detected by the temperature sensor is obtained when the electric heating device rotates from the termination angle to the initial angle. The temperature of the electric heating device at several angles in the entire rotation range is detected to improve the accuracy.

[0169] In some embodiments, when the electric heating device is located at the anti-condensation angle, it is judged whether the operating parameters of the air conditioner change, and when the operating parameters of the air conditioner change, the air conditioner is operated according to the changed operating parameters for a set time before entering the condensation condition detection step.

[0170] The operating parameters of the air conditioner include air speed, air deflector position, compressor operating frequency (related to user-set temperature and ambient temperature), etc.

[0171] Due to the change of the operating parameters of the air conditioner, the temperature around the electric heating device changes after operating according to the changed operating parameters. In order to avoid condensation, the anti-condensation angle of the electric heating device is determined again after entering the condensation condition detection step, so as to ensure that the electric heating device is always at the anti-condensation angle with uniform temperature field.

[0172] The electric heating device driving device is added to the electric heating device in this embodiment, so that the electric heating device can adjust the angle during the actual operation of the air conditioner. The temperature sensor and humidity sensor arranged around the electric heating device are used to monitor whether the temperature field around the electric heating device is uniform, and the electric heating angle with the most uniform temperature field around the electric heating device is selected as the anti-condensation angle to avoid or minimize the generation of condensation. This embodiment can adjust the angle of the electric heating device according to the operating state of the air conditioner, so that the temperature field around the electric heating device is uniform, and the condensation water generated by the alternating mixing of cold and hot air around the electric heating device is avoided.

[0173] The above merely describes preferred embodiments of the present application, but is not intended to limit the present application to other forms, and any person skilled in the art can make changes or modifications to the above disclosed technical contents into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments 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. An air conditioner characterized by comprising: The air conditioner comprises: an electric heating device; an electric heating driving device for driving the electric heating device to rotate; a detection module located around the electric heating device and rotating synchronously with the electric heating device; a control module for, when the air conditioner is operating in refrigeration or dehumidification, performing condensation condition detection, for obtaining parameters detected by the detection module when the electric heating driving device drives the electric heating device to rotate within a rotation range thereof, and for, after the condensation condition detection is completed, entering condensation condition judgment, for determining parameters T(j) detected by the detection module corresponding to angles W(j) of the electric heating device, for determining parameters T(j+180°) detected by the detection module corresponding to angles W(j+180°) of the electric heating device, for determining a minimum value of |T(j)-T(j+180°)|, and for determining an angle of the electric heating device corresponding to the minimum value as an anti-condensation angle, and for controlling the electric heating driving device to drive the electric heating device to rotate to the anti-condensation angle. The detection module comprises a temperature sensor arranged around the electric heating device; 2. The air conditioner of claim 1, wherein a control module for, when the air conditioner is operating in refrigeration or dehumidification, performing condensation condition detection, for obtaining temperatures detected by the temperature sensor when the electric heating driving device drives the electric heating device to rotate within a rotation range thereof, and for, after the condensation condition detection is completed, entering condensation condition judgment, for determining temperatures T(j) detected by the temperature sensor corresponding to angles W(j) of the electric heating device, for determining temperatures T(j+180°) detected by the temperature sensor corresponding to angles W(j+180°) of the electric heating device, for determining a minimum value of |T(j)-T(j+180°)|, and for determining an angle of the electric heating device corresponding to the minimum value as an anti-condensation angle, and for controlling the electric heating driving device to drive the electric heating device to rotate to the anti-condensation angle. The detection module comprises a temperature sensor arranged around the electric heating device; a control module for, when the air conditioner is operating in refrigeration or dehumidification, performing condensation condition detection, for obtaining temperatures detected by the temperature sensor when the electric heating driving device drives the electric heating device to rotate within a rotation range thereof, and for, after the condensation condition detection is completed, entering condensation condition judgment, for determining temperatures T(j) detected by the temperature sensor corresponding to angles W(j) of the electric heating device, for determining temperatures T(j+180°) detected by the temperature sensor corresponding to angles W(j+180°) of the electric heating device, for determining a minimum value of |T(j)-T(j+180°)|, and for determining an angle of the electric heating device corresponding to the minimum value as an anti-condensation angle, and for controlling the electric heating driving device to drive the electric heating device to rotate to the anti-condensation angle.

3. The air conditioner of claim 1, wherein The detection module comprises a temperature sensor arranged around the electric heating device; a control module for, when the air conditioner is operating in refrigeration or dehumidification, performing condensation condition detection, for obtaining temperatures detected by the temperature sensor when the electric heating driving device drives the electric heating device to rotate within a rotation range thereof, and for, after the condensation condition detection is completed, entering condensation condition judgment, for determining temperatures T(j) detected by the temperature sensor corresponding to angles W(j) of the electric heating device, for determining temperatures T(j+180°) detected by the temperature sensor corresponding to angles W(j+180°) of the electric heating device, for determining a minimum value of |T(j)-T(j+180°)|, and for determining an angle of the electric heating device corresponding to the minimum value as an anti-condensation angle, and for controlling the electric heating driving device to drive the electric heating device to rotate to the anti-condensation angle. ​ ​ 4. The air conditioner according to any one of claims 1 to 3, characterized by The control module is used for judging whether the operation parameter of the air conditioner changes when the electric heating device is located at the anti-condensation angle, and is used for operating according to the changed operation parameter for a set time and then detecting the condensation condition again when the operation parameter of the air conditioner changes.

5. The air conditioner according to any one of claims 1 to 3, wherein The control module is used for obtaining the current angle of the electric heating device, and is used for selecting the angle W(j) or W(j+180°) of the electric heating device with a small rotation range as the anti-condensation angle.

6. A control method of an air conditioner, characterized by, The air conditioner comprises an electric heating device, an electric heating driving device and a detection module; the electric heating driving device is used for driving the electric heating device to rotate; the detection module is located around the electric heating device and rotates synchronously with the electric heating device; and the control method is as follows: The air conditioner is operated in a refrigeration or dehumidification mode; A condensation condition detection step: when the electric heating driving device drives the electric heating device to rotate in a rotation range thereof, a parameter detected by the detection module is obtained; A condensation condition judgment step: parameters T(j) corresponding to angles W(j) of the electric heating device are determined, parameters T(j+180°) corresponding to angles W(j+180°) of the electric heating device are determined, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is determined as an anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

7. The control method of the air conditioner according to claim 6, wherein The detection module comprises a temperature sensor arranged around the electric heating device, and the control method is as follows: The air conditioner is operated in a refrigeration or dehumidification mode; A condensation condition detection step: when the electric heating driving device drives the electric heating device to rotate in a rotation range thereof, a temperature detected by the temperature sensor is obtained; A condensation condition judgment step: temperatures T(j) detected by the temperature sensor corresponding to angles W(j) of the electric heating device are determined, temperatures T(j+180°) detected by the temperature sensor corresponding to angles W(j+180°) of the electric heating device are determined, the angle of the electric heating device corresponding to the minimum value of |T(j)-T(j+180°)| is determined as an anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

8. The control method of the air conditioner according to claim 6, characterized by, The detection module comprises a humidity sensor and a temperature sensor arranged around the electric heating device, and at least the temperature sensor rotates synchronously with the electric heating device; and the control method is as follows: The air conditioner is operated in a refrigeration or dehumidification mode; A condensation condition detection step: a humidity S detected by the humidity sensor is obtained; when the electric heating driving device drives the electric heating device to rotate in a rotation range thereof, a temperature detected by the temperature sensor is obtained; The condensation condition judging step comprises: determining the temperature T(j) detected by the temperature sensor corresponding to the angle W(j) of the electric heating device, determining the temperature T(j+180°) detected by the temperature sensor corresponding to the angle W(j+180°) of the electric heating device, determining the dew point temperature K according to max[T(j), T(j+180°)] and the humidity S, and determining the angle of the electric heating device corresponding to the minimum value of |K-min[T(j), T(j+180°)]| as the anti-condensation angle, and driving the electric heating device to rotate to the anti-condensation angle by the electric heating driving device.

9. The control method of an air conditioner according to any one of claims 6 to 8, characterized by, When the electric heating device is located at the anti-condensation angle, it is judged whether the operating parameter of the air conditioner changes, and when the operating parameter of the air conditioner changes, the condensation condition detection step is entered again after running for a set time according to the changed operating parameter.

10. The control method of an air conditioner according to any one of claims 6 to 8, characterized by, The current angle of the electric heating device is obtained, and the angle W(j) or W(j+180°) of the electric heating device with a small rotation amplitude relative to the current angle is selected as the anti-condensation angle.

Images