WO2023185867A1

WO2023185867A1 - Air conditioner and control method therefor

Info

Publication number: WO2023185867A1
Application number: PCT/CN2023/084445
Authority: WO
Inventors: 程惠鹏; 王祯祯; 张蕾; 宋力钊
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2022-04-01
Filing date: 2023-03-28
Publication date: 2023-10-05
Also published as: CN114791132A

Abstract

Provided in the present invention are an air conditioner and a control method therefor. The air conditioner comprises an electric heating device, an electric heating driving device, a detection module, a detection module driving device and a control module. In the air conditioner of the present invention, the electric heating device is driven by means of the electric heating driving device to rotate to a plurality of angles Wj within a rotation range thereof, and for each angle Wj, the detection module driving device drives the detection module to rotate around the electric heating device. The detection module measures at least two parameters during a rotation process. A maximum value Tmaxj and a minimum value Tminj of the at least two parameters corresponding to the angles Wj of the electric heating device are determined, and a difference between the maximum value Tmaxj and the minimum value Tminj is calculated. A temperature field distribution around the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum value Tmaxj and the minimum value Tminj is the most uniform, so that as an anti-condensation angle of the electric heating device, said angle Wj can reduce generation of condensation as much as possible. In the present invention, the anti-condensation angle is first found, and then the electric heating device is controlled to directly reach the anti-condensation angle, so that the electric heating device does not need to successively rotate by a set angle to search for the anti-condensation angle, thereby achieving high anti-condensation efficiency.

Description

Air conditioner and control method thereof

Technical field

The present invention relates to the technical field of air conditioning devices, and in particular to an air conditioner and a control method thereof.

Background technique

Existing air-conditioning indoor units generally have an auxiliary heating function, that is, an electric heating device is installed in the air-conditioning indoor unit to assist heating and enhance the heating effect of the air conditioner.

Generally, electric heating devices are installed near the evaporator of the indoor unit. For example, the electric heating device of the indoor unit of an on-hook air conditioner is generally installed between the evaporator and the cross-flow fan. When the air conditioner is running for refrigeration, the indoor air passes through the air inlet of the air conditioner and becomes cold air after being exchanged by the evaporator. Part of the cold air will pass through the electric heating device and be blown out from the air outlet by the cross-flow fan. Therefore, when the air conditioner is cooling, the temperature of the electric heating device will drop rapidly. At the same time, due to the refrigeration of the air conditioner, a lot of condensation water will condense on the evaporator fins. When the air conditioner stops cooling, in actual tests, the humidity in the air inside the air duct is very high. Therefore, the electric heating device will generate condensation 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 will cause more and more condensation water at the electric heating device. When the wind speed of the air conditioner is high, the condensation water on the electric heating device may be blown out directly and drip into the room, affecting the indoor environment. User experience of using air conditioner. At the same time, there is condensation water on the electric heating device for a long time, which poses certain safety risks and may cause oxidation and corrosion of the metal parts of the electric heating device, shortening its service life. It is also easy to cause the electric heating device to be in a moist state for a long time, causing mildew, causing the wind blown by the air conditioner to have a musty smell.

In addition, according to actual experimental verification, when the air conditioner is operating in cooling mode, due to the unbalanced temperature field around the electric heating device and high internal humidity, the electric heating device will continue to produce condensation water during the operation of the air conditioner, which will accumulate for a period of time. Then it will drip directly.

In response to the above technical problems, existing solutions are:

1. The air conditioner enters the air supply mode within a short time after finishing cooling, which can increase the temperature of the electric heating device and reduce the possibility of condensation on the electric heating device. However, the temperature increase of electric heating is limited, and the problem of condensation on the electric heating device cannot be completely avoided.

2. When the air conditioner is running for refrigeration, control the air conditioner to shut down through remote control/voice control/APP, etc. The internal and external fans and compressors of the air conditioner are turned off according to the program control. After the air guide plate of the indoor unit is closed, the internal fan will rotate at the set low speed. operation, and at the same time, the electric heating device is turned on for a short time to increase the electric heating temperature and evaporate the condensed water on the electric heating device. After the cooling is completed, the electric heating is turned on to evaporate the condensed water, but this cannot avoid the problem of excessive accumulation of condensed water dripping when the air conditioner is operated for a long time.

technical problem

The object of the present invention is to provide an air conditioner and a control method thereof, which solve the technical problem of the existing air conditioner causing different temperatures around the electric heating device during cooling or dehumidification operation, thereby generating condensation water on the electric heating device.

Technical solutions

An air conditioner, the air conditioner includes:

electric heating device;

An electric heating drive device is used to drive the electric heating device to rotate;

A detection module located around the electric heating device;

A detection module driving device used to drive the detection module to rotate around the electric heating device;

A control module, used to detect condensation conditions when the air conditioner is running for cooling or dehumidification: used to control the electric heating drive device to drive the electric heating device to rotate to a certain angle Wj, and used to control the electric heating device when the electric heating device is running. When the device is located at each angle Wj, the detection module driving device drives the detection module to rotate around the electric heating device to obtain at least two parameters detected during the rotation of the detection module;

Used to enter the condensation condition judgment after the condensation condition detection is completed: used to determine the angle Wj of several electric heating devices corresponding to the maximum value Tmaxj and the minimum value Tminj of at least two parameters, and used to calculate the maximum value Tmaxj and the minimum value The difference in Tminj is used to determine the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum value Tmaxj and the minimum value Tminj. It is the anti-condensation angle. The electric heating drive device is controlled to drive the electric heating device to rotate to The anti-condensation angle.

A control method for an air conditioner. The air conditioner includes an electric heating device, an electric heating driving device, a detection module and a detection module driving device; the electric heating driving device is used to drive the electric heating device to rotate; the detection module Located around the electric heating device; the detection module driving device is used to drive the detection module to rotate around the electric heating device; the control method is:

The air conditioner operates in cooling or dehumidification operation;

Condensation condition detection step: control the electric heating driving device to drive the electric heating device to rotate to several angles Wj. When the electric heating device is at each angle Wj, the detection module driving device drives the detection module to rotate around The electric heating device rotates to obtain at least two parameters detected during the rotation of the detection module;

Dew condensation condition judgment step: determine the angle Wj of several electric heating devices corresponding to the maximum value Tmaxj and the minimum value Tminj of at least two parameters, calculate the difference between the maximum value Tmaxj and the minimum value Tminj, and determine the difference between the maximum value Tmaxj and the minimum value Tminj The angle Wj of the electric heating device corresponding to the minimum value of the difference is the anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

beneficial effects

The air conditioner of the present invention drives the electric heating device to rotate to several angles Wj within its rotation range through the electric heating driving device. For each angle Wj, the detection module driving device drives the detection module to rotate around the electric heating device. During the rotation of the detection module, it detects at least Two parameters, determine the angle Wj of the electric heating device corresponding to the maximum value Tmaxj and the minimum value Tminj of at least two parameters, calculate the difference between the maximum value Tmaxj and the minimum value Tminj, and the minimum value of the difference between the maximum value Tmaxj and the minimum value Tminj corresponds to The temperature field distribution around the angle Wj of the electric heating device is the most uniform. As the anti-condensation angle of the electric heating device, the generation of condensation can be minimized. The invention can avoid or reduce the problem of condensation occurring in the electric heating device during the cooling or dehumidification process of the air conditioner. The invention controls the electric heating device to rotate to several angles and controls the detection module to rotate around the electric heating device to detect parameters for each angle. The anti-condensation angle is directly determined based on the rotation angle of the electric heating device and the detection parameters. The invention first finds the anti-condensation angle. , control the electric heating device to directly reach the anti-condensation angle, without the need for the electric heating device to rotate the set angle in sequence to test and find the anti-condensation angle, and the anti-condensation efficiency is high.

Description of drawings

Figure 1 is a schematic diagram of an air conditioning indoor unit according to a specific embodiment of the present invention.

Figure 2 is a schematic diagram of an electric heating device according to a specific embodiment of the present invention.

Figure 3 is a schematic diagram of an electric heating device and a detection module according to a specific embodiment of the present invention.

FIG. 4 is a side view of FIG. 3 .

Figure 5 is a flow chart of specific embodiment 1 of the present invention.

Figure 6 is a flow chart of the second specific embodiment of the present invention.

Figure 7 is a flow chart of the third specific embodiment of the present invention.

In the figure, 1. Evaporator; 2. Electric heating device; 3. Cross flow fan; 4. Detection module; 41. Bracket; 42. Slide rail; 5. Electric heating drive device; 6. Detection module drive device.

. Embodiments of the invention

As shown in Figures 1-4, the air conditioner includes an evaporator 1, an electric heating device 2 and a cross-flow fan 3 located in a casing and arranged sequentially in the direction of air flow.

As shown in Figure 1, when the air conditioner is running for cooling or dehumidification, the temperatures of the upper space, lower space, left space and right space of the electric heating device 2 are not consistent. When the detected temperatures of the two areas around the electric heating device are as follows: the lower temperature around the electric heating is lower than the dew point temperature of the higher temperature, water condensation will occur between the two temperature areas, that is, when the electric heating Condensation has formed on the unit. During the operation of the air conditioner, the electric heating device continuously produces condensation water. After accumulating for a period of time, it will drip directly and be blown out directly by the cross-flow fan.

When the air conditioner is running, different operating states, such as wind speed, air deflector position, and compressor operating frequency (determined by the ambient temperature and user-set temperature), cause the electric heating device to be at the same angle. The temperature distribution is inconsistent.

When the air conditioner is running for cooling or dehumidification, the angle of the electric heating is very important for the uniform distribution of the temperature field around the electric heating device. If the electric heating device is at an angle that causes the temperature field around the electric heating device to be unevenly distributed, it is easy for the electric heating device 2 to Condensation occurs on the electric heating device 2, and if the electric heating device is at an angle such that the temperature field around it is evenly distributed, condensation can be avoided or reduced on the electric heating device 2. Therefore, how to determine the anti-condensation position of the electric heating device so that its surrounding parameters do not meet the condensation conditions is the purpose of the present invention.

The air conditioner includes an electric heating device 2 and an electric heating driving device 5. The electric heating driving device 5 is used to drive the electric heating device 2 to rotate to adjust the angle of the electric heating device 2.

The electric heating device 2 of the air conditioner is driven to rotate by an electric heating driving device 5. The electric heating device 2 is generally rotatably installed on the mounting bracket or the tube plate of the evaporator 1. The electric heating driving device 5 includes a driving motor, such as , stepper motor, the driving motor 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.

The electric heating drive device 5 generally drives the electric heating device 2 to rotate forward and reverse alternately within the rotation range. That is, the electric heating drive device 5 drives the electric heating device 2 to rotate forward from the initial angle to the end angle. The electric heating device is rotating. The electric heating drive device 5 drives the electric heating device 2 to rotate reversely from the end angle to the initial angle when the electric heating device 5 rotates once within the rotation range. This method avoids the entanglement of the electric heating wire.

The air conditioner includes a detection module 4 and a detection module driving device 6 . The detection module 4 is arranged around the electric heating device 2 . The detection module driving device 6 is used to drive the detection module 4 to rotate around the electric heating device 5 .

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

In some embodiments, the detection module 4 is generally installed on the bracket 41. The bracket 41 can be configured in an annular shape. The bracket 41 is provided with an annular chute and a slide rail 42 sliding along the chute. The detection module 4 is located on the slide. On the rail 42, the slide rail 42 has a rack. The detection module driving device 6 includes a driving motor, such as a stepper motor, and the driving motor is installed on the bracket 41 . The drive motor cooperates with the gear and rack to drive the slide rail 42 to slide.

The detection module driving device 6 drives the detection module 4 to rotate alternately in forward and reverse directions within the rotation range. That is, the detection module driving device 6 drives the detection module 4 to rotate forward from the initial angle to the end angle for the detection module to rotate within the rotation range. circle, the detection module driving device 6 drives the detection module 4 to reversely rotate from the end angle to the initial angle, which means that the detection module rotates once within the rotation range. This method can avoid the detection module wires from being entangled.

The rotation range of the electric heating device and the rotation range of the detection module may be the same or different.

In order to reduce costs, only one detection module 4 is provided, which can also achieve the purpose of the present invention.

The following is explained through specific examples:

Example

The air conditioner includes: an electric heating device, an electric heating driving device, a detection module, a detection module driving device and a control module.

The electric heating drive device is used to drive the electric heating device to rotate.

The detection module is located around the electric heating device and is used to detect parameters around the electric heating device.

The detection module driving device is used to drive the detection module to rotate around the electric heating device.

The control module is used to detect condensation conditions when the air conditioner is running for cooling or dehumidification: it is used to control the electric heating drive device to drive the electric heating device to rotate to several angles Wj, and when the electric heating device is located at each angle Wj, The detection module driving device drives the detection module to rotate around the electric heating device, and at least two parameters detected during the rotation of the detection module are obtained. The rotation process of the detection module can be continuous rotation or fixed-angle rotation.

When the electric heating device is at angle Wj, and the detection module driving device drives the detection module to continuously rotate around the electric heating device, the detection module detects parameters in real time and forms a parameter curve Xj to improve the accuracy of temperature distribution detection. When the detection module driving device drives the detection module to rotate at a fixed angle around the electric heating device, the detection module driving device drives the detection module to rotate around the electric heating device to multiple different positions, and the detection module detects parameters at corresponding positions when it is in multiple different positions.

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. When the electric heating device is at each angle, the detection module driving device drives the detection module to rotate around the electric heating device, preferably rotating In one circle, the detection module detects parameters to form a parameter curve. The electric heating drive device drives the electric heating device to pause briefly at each angle.

As shown in Figures 1 and 4, this embodiment uses the rotation angle of the electric heating device divided into 12 as an example for explanation:

When the electric heating device is at the W1 angle, the parameters detected by the detection module form the parameter curve X1;

When the electric heating device is at the W2 angle, the parameters detected by the detection module form the parameter curve X2;

…

When the electric heating device is at the angle Wj, the parameters detected by the detection module form a parameter curve Xj;

…

When the electric heating device is at the angle W12, the parameters detected by the detection module form the parameter curve X12.

Of course, the more electric heating angles are divided, the more accurate the anti-condensation angle can be determined, but the calculation becomes more complicated.

The control module is used to enter the condensation condition judgment after the condensation condition detection is completed: used to determine the angle Wj of several electric heating devices corresponding to the maximum value Tmaxj and the minimum value Tminj of at least two parameters, and used to calculate the maximum value Tmaxj and the minimum value The difference in Tminj is used to determine the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum value Tmaxj and the minimum value Tminj as the anti-condensation angle, and the electric heating drive device is controlled to drive the electric heating device to rotate to the anti-condensation angle.

The control module is used to control the electric heating drive device to drive the electric heating device to rotate within the rotation range from the initial angle to (180 degrees - initial angle) during the detection of condensation conditions. As shown in Figure 4, the angles W1-W6 of the electric heating device in the rotation range of 0 degrees to 180 degrees are exactly the same as the angles W7-W12 of the electric heating device in the rotation range of 180 degrees to 360 degrees. There is no need to repeat the calculation, so , it is only necessary to control the electric heating device to rotate within the rotation range of 0 degrees to 180 degrees and obtain the parameters detected by the detection module at a specific angle to form a parameter curve, which can reduce the calculation amount of the control module. The control module is used to drive the detection module to rotate from the initial angle to the end angle or from the end angle to the initial angle through the detection module driving device when the electric heating device is located at each angle Wj. During the rotation of the detection module, the detection module detects parameters in real time. The parameter curve Xj is formed to comprehensively obtain the surrounding temperature distribution when the electric heating device is located at each angle.

The control module is used to determine whether the operating parameters of the air conditioner have changed when the electric heating device is at the anti-condensation angle. When the operating parameters of the air conditioner change, it is used to run the changed operating parameters for a set time before proceeding. Condensation condition detection.

Among them, the operating parameters of the air conditioner include wind speed, air deflector position, compressor operating frequency (related to user-set temperature and ambient temperature), etc.

As the operating parameters of the air conditioner change, after operating according to the changed operating parameters, the parameters around the electric heating device change. In order to avoid condensation, after entering the condensation condition detection step, re-determine the anti-condensation of the electric heating device. Angle to ensure that the electric heating device is always at an anti-condensation angle with a uniform temperature field.

In this embodiment, when the air conditioner is cooling or dehumidifying, the condensation condition is detected first: the electric heating drive device is controlled to drive the electric heating device to rotate to several angles Wj within its rotation range. For each angle Wj, the detection module drive device drives and detects The module rotates around the electric heating device, and at least two parameters are detected during the rotation of the detection module, preferably in real time to form a parameter curve Xj. The parameter curve Sure. After the condensation condition is detected, the control module then judges the condensation condition: it determines the angle Wj of several electric heating devices corresponding to the maximum value Tmaxj and the minimum value Tminj of at least two parameters, which is used to calculate the maximum value Tmaxj and the minimum value Tminj. Difference, the difference between the maximum value Tmaxj and the minimum value Tminj reflects whether the temperature field distribution around the electric heating device is uniform. The smaller the difference, the more uniform the temperature field distribution, and the smaller the risk of condensation generated by the electric heating device. Therefore, Determine the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum value Tmaxj and the minimum value Tminj as the anti-condensation angle, and control the electric heating drive device to drive the electric heating device to rotate to the anti-condensation angle. The anti-condensation angle found in this embodiment can ensure uniform temperature field distribution around the electric heating device and avoid or reduce condensation generated by the electric heating device.

The control method of the air conditioner is:

Air conditioner cooling or dehumidification operation;

Condensation condition detection step: control the electric heating driving device to drive the electric heating device to rotate to a certain angle Wj. When the electric heating device is at each angle Wj, the detection module driving device drives the detection module to rotate around the electric heating device to obtain the rotation process of the detection module. At least two parameters detected in;

Dew condensation condition judgment steps: Determine the angle Wj of several electric heating devices corresponding to the maximum value Tmaxj and minimum value Tminj of at least two parameters, calculate the difference between the maximum value Tmaxj and the minimum value Tminj, and determine the difference between the maximum value Tmaxj and the minimum value Tminj The angle Wj of the electric heating device corresponding to the minimum value is the anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

When the air conditioner is running for cooling or dehumidification, the electric heating driving device is controlled to drive the electric heating device to rotate to a certain angle Wj within its rotation range. For each angle Wj, the detection module driving device drives the detection module to rotate around the electric heating device. The detection module detects at least two parameters during the rotation process, preferably real-time detection to form a parameter curve Xj. When the electric heating device 2 is at a specific angle, the parameter curve formed by the parameters detected by the rotation of the detection module 4 can reflect the temperature field around the electric heating device 2 at this time Whether it is uniform or not, determine the maximum value Tmaxj and the minimum value Tminj of the parameters detected by the detection module corresponding to the angle Wj of several electric heating devices. When the difference between the maximum value Tmaxj and the minimum value Tminj is the smallest, it means that the temperature field around the electric heating device 2 is the smallest. Uniform, therefore, the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum value Tmaxj and the minimum value Tminj 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 temperature around the electric heating device The field is evenly distributed to avoid or reduce the uneven temperature field caused by the alternating mixing of hot and cold air around the electric heating device, and to avoid or reduce the generation and dripping of condensation water from the electric heating device.

As shown in Figure 5, the control method of the air conditioner in this embodiment is:

S1, air conditioner cooling or dehumidification operation.

S2. Control the electric heating driving device to drive the electric heating device to rotate to a certain angle Wj. When the electric heating device is at each angle Wj, the detection module driving device drives the detection module to rotate around the electric heating device to obtain at least one detected value during the rotation of the detection module. Two parameters.

S3. Determine the angle Wj of several electric heating devices corresponding to the maximum value Tmaxj and the minimum value Tminj of at least two parameters, and calculate the difference between the maximum value Tmaxj and the minimum value Tminj.

S4. Determine the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum value Tmaxj and the minimum value Tminj as the anti-condensation angle.

S5. The electric heating drive device drives the electric heating device to rotate to an anti-condensation angle.

In step S5, at the anti-condensation angle of the electric heating device, the temperature field around the electric heating device is evenly distributed and will not cause condensation on the electric heating device.

In some embodiments, during the detection of condensation conditions, the electric heating driving device is controlled to drive the electric heating device to rotate within a rotation range from an initial angle to (180 degrees - initial angle). As shown in Figure 4, the angles W1-W6 of the electric heating device in the rotation range of 0 degrees to 180 degrees are exactly the same as the angles W7-W12 of the electric heating device in the rotation range of 180 degrees to 360 degrees. There is no need to repeat the calculation, so , it is only necessary to control the electric heating device to rotate within the rotation range of 0 degrees to 180 degrees and obtain the parameter curve formed by the detection parameters of the detection module at a specific angle, which can reduce the calculation amount of the control module. When the electric heating device is located at each angle Wj, the detection module driving device drives the detection module to rotate from the initial angle to the end angle or from the end angle to the initial angle. During the rotation of the detection module, the detection module detects parameters in real time to form a parameter curve Xj, In order to comprehensively obtain the surrounding temperature distribution when the electric heating device is located at each angle.

In some embodiments, when the electric heating device is at an anti-condensation angle, it is determined whether the operating parameters of the air conditioner have changed. When the operating parameters of the air conditioner change, the system operates according to the changed operating parameters for a set time before entering. Condensation condition detection steps.

Embodiment 2

Among them, the detection module 4 includes a temperature sensor located around the electric heating device.

Specifically, the detection module 4 includes a temperature sensor arranged around the electric heating device. The temperature sensor is at a certain distance from the electric heating device and is used to measure the air temperature around the electric heating device.

The control module is used to detect condensation conditions when the air conditioner is running for cooling or dehumidification: it is used to control the electric heating drive device to drive the electric heating device to rotate to several angles Wj, and when the electric heating device is located at each angle Wj, The detection module drives the temperature sensor of the device to rotate around the electric heating device to obtain at least two temperatures detected by the temperature sensor.

Preferably, when the electric heating device is at angle Wj and the detection module driving device drives the temperature sensor to rotate around the electric heating device, the temperature sensor detects the temperature in real time and forms a temperature curve Xj to improve the accuracy of temperature distribution detection.

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. When the electric heating device is at each angle, the detection module driving device drives the temperature sensor to rotate around the electric heating device, preferably rotating In one circle, the temperature sensor detects the temperature and obtains the temperature curve. The electric heating drive device drives the electric heating device to pause briefly at each angle.

When the electric heating device is at the angle W1, the temperature detected by the temperature sensor forms a temperature curve X1;

When the electric heating device is at the W2 angle, the temperature detected by the temperature sensor forms a temperature curve X2;

…

When the electric heating device is at the angle Wj, the temperature detected by the temperature sensor forms a temperature curve Xj;

…

When the electric heating device is at the angle W12, the temperature detected by the temperature sensor forms a temperature curve X12.

The control module is used to enter the condensation condition judgment after the condensation condition detection is completed: used to determine the angle Wj of several electric heating devices corresponding to the maximum temperature Tmaxj and minimum temperature Tminj of at least two temperatures, and used to calculate the maximum temperature Tmaxj and the minimum temperature The difference in Tminj is used to determine the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum temperature Tmaxj and the minimum temperature Tminj as the anti-condensation angle. The electric heating drive device is controlled to drive the electric heating device to rotate to the anti-condensation angle.

The control module is used to control the electric heating drive device to drive the electric heating device to rotate within the rotation range from the initial angle to (180 degrees - initial angle) during the detection of condensation conditions. As shown in Figure 4, the angles W1-W6 of the electric heating device in the rotation range of 0 degrees to 180 degrees are exactly the same as the angles W7-W12 of the electric heating device in the rotation range of 180 degrees to 360 degrees. There is no need to repeat the calculation, so , it is only necessary to control the electric heating device to rotate within the rotation range of 0 degrees to 180 degrees and obtain the temperature curve formed by the temperature detected by the temperature sensor at a specific angle, which can reduce the calculation amount of the control module. The control module is used to drive the temperature sensor to rotate from the initial angle to the end angle or from the end angle to the initial angle through the detection module driving device when the electric heating device is located at each angle Wj. During the rotation of the temperature sensor, the temperature sensor detects the temperature in real time. The temperature curve Xj is formed to comprehensively obtain the surrounding temperature distribution when the electric heating device is located at each angle.

In this embodiment, when the air conditioner is cooling or dehumidifying, the condensation condition is detected first: the electric heating drive device is controlled to drive the electric heating device to rotate to several angles Wj within its rotation range. For each angle Wj, the driving temperature of the module drive device is detected. The sensor rotates around the electric heating device, and the temperature sensor detects at least two temperatures during rotation, preferably in real time to form a temperature curve Xj. The temperature curve Sure. After the condensation condition is detected, the control module then judges the condensation condition: it determines the angle Wj of several electric heating devices corresponding to the maximum temperature Tmaxj and the minimum temperature Tminj of at least two temperatures, which is used to calculate the maximum temperature Tmaxj and the minimum temperature Tminj. Difference, the difference between the maximum temperature Tmaxj and the minimum temperature Tminj reflects whether the temperature field distribution around the electric heating device is uniform. The smaller the difference, the more uniform the temperature field distribution, and the smaller the risk of condensation generated by the electric heating device. Therefore, Determine the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum temperature Tmaxj and the minimum temperature Tminj as the anti-condensation angle, and control the electric heating drive device to drive the electric heating device to rotate to the anti-condensation angle. The anti-condensation angle found in this embodiment can ensure uniform temperature field distribution around the electric heating device and avoid or reduce condensation generated by the electric heating device.

The control method of the air conditioner is:

Air conditioner cooling or dehumidification operation;

Condensation condition detection step: control the electric heating driving device to drive the electric heating device to rotate to a certain angle Wj. When the electric heating device is at each angle Wj, the detection module driving device drives the temperature sensor to rotate around the electric heating device to obtain the temperature sensor rotation process. At least two temperatures detected in;

Dew condensation condition judgment steps: Determine the angle Wj of several electric heating devices corresponding to the maximum temperature Tmaxj and minimum temperature Tminj of at least two temperatures, calculate the difference between the maximum temperature Tmaxj and the minimum temperature Tminj, and determine the difference between the maximum temperature Tmaxj and the minimum temperature Tminj The angle Wj of the electric heating device corresponding to the minimum value is the anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.

When the air conditioner is running for cooling or dehumidification, the electric heating driving device is controlled to drive the electric heating device to rotate to a certain angle Wj within its rotation range. When the electric heating device is located at each angle Wj, the detection module driving device drives the temperature sensor to rotate around the electric heating device. The device rotates once, and the temperature sensor detects at least two temperatures during the rotation process. Preferably, real-time detection forms a temperature curve Xj. When the electric heating device 2 is at a specific angle, the temperature curve detected by the temperature sensor rotation can reflect the temperature around the electric heating device 2 at this time. Whether the field is uniform, determine the maximum temperature Tmaxj and minimum temperature Tminj of the temperature detected by the temperature sensor corresponding to the angle Wj of several electric heating devices. When the difference between the maximum temperature Tmaxj and the minimum temperature Tminj is the smallest, explain the temperature field around the electric heating device 2 The most uniform, therefore, select the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum temperature Tmaxj and the minimum temperature Tminj as the anti-condensation angle, and control the electric heating device to rotate to the anti-condensation angle to ensure that the surrounding area of the electric heating device The temperature field is evenly distributed to avoid or reduce the uneven temperature field caused by the alternating mixing of hot and cold air around the electric heating device, and to avoid or reduce the generation and dripping of condensation water from the electric heating device.

As shown in Figure 6, the control method of the air conditioner in this embodiment is:

S1, air conditioner cooling or dehumidification operation.

S2. Control the electric heating driving device to drive the electric heating device to rotate to a certain angle Wj. When the electric heating device is at each angle Wj, the detection module driving device drives the temperature sensor to rotate around the electric heating device, and obtains at least the temperature detected during the rotation of the temperature sensor. Two temperatures.

S3. Determine the angle Wj of several electric heating devices corresponding to the maximum temperature Tmaxj and the minimum temperature Tminj of at least two temperatures, and calculate the difference between the maximum temperature Tmaxj and the minimum temperature Tminj.

S4. Determine the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum temperature Tmaxj and the minimum temperature Tminj as the anti-condensation angle.

In some embodiments, during the detection of condensation conditions, the electric heating driving device is controlled to drive the electric heating device to rotate within a rotation range from an initial angle to (180 degrees - initial angle). As shown in Figure 4, the angles W1-W6 of the electric heating device in the rotation range of 0 degrees to 180 degrees are exactly the same as the angles W7-W12 of the electric heating device in the rotation range of 180 degrees to 360 degrees. There is no need to repeat the calculation, so , it only needs to control the electric heating device to rotate within the rotation range of 0 degrees to 180 degrees and obtain the temperature detected by the temperature sensor, which can reduce the calculation amount of the control module. When the electric heating device is located at each angle Wj, the detection module driving device drives the temperature sensor to rotate from the initial angle to the end angle or from the end angle to the initial angle. During the rotation of the temperature sensor, the temperature sensor detects the temperature in real time to form a temperature curve Xj. In order to comprehensively obtain the surrounding temperature distribution when the electric heating device is located at each angle.

As the operating parameters of the air conditioner change, after operating according to the changed operating parameters, the temperature around the electric heating device changes. In order to avoid condensation, after entering the condensation condition detection step, re-determine the anti-condensation of the electric heating device. Angle to ensure that the electric heating device is always at an anti-condensation angle with a uniform temperature field.

Embodiment 3

In this embodiment, the detection module 4 includes a temperature sensor and a humidity sensor located around the electric heating device. The detection module driving device at least drives the temperature sensor to rotate around the electric heating device.

The installation position of the humidity sensor is not limited. The humidity sensor can be fixedly installed in the air conditioner, or the humidity sensor can also rotate synchronously with the temperature sensor.

The temperature sensor is at a certain distance from the electric heating device and is used to measure the air temperature around the electric heating device.

The humidity sensor is at a certain distance from the electric heating device and is used to measure the air humidity around the electric heating device.

The control module is used to detect condensation conditions when the air conditioner is cooling or dehumidifying: used to obtain the humidity S detected by the humidity sensor; used to control the electric heating drive device to drive the electric heating device to rotate to a certain angle Wj, used to When the electric heating device is located at each angle Wj, the temperature sensor of the detection module drives the device to rotate around the electric heating device to obtain at least two temperatures detected by the temperature sensor.

The humidity sensor detects humidity S;

…

The control module is used to enter the condensation condition judgment after the condensation condition is detected: used to determine the angle Wj of several electric heating devices corresponding to the maximum temperature Tmaxj and the minimum temperature Tminj of at least two temperatures, and determine the dew point based on the maximum temperature Tmaxj and the humidity S. Temperature Kj; used to determine the angle Wj of the electric heating device corresponding to the minimum value of |Kj-Tminj| as the anti-condensation angle, and control the electric heating drive device to drive the electric heating device to rotate to the anti-condensation angle.

In this embodiment, when the air conditioner is cooling or dehumidifying, the condensation condition is detected first: the humidity S detected by the humidity sensor is obtained, and the electric heating drive device is controlled to drive the electric heating device to rotate to several angles Wj within its rotation range. For each angle Wj, the detection module driving device drives the temperature sensor to rotate around the electric heating device. During the rotation of the temperature sensor, at least two temperatures are detected, preferably in real time to form a temperature curve Xj. The temperature curve Sure. After the condensation condition is detected, the control module then determines the condensation condition: determine the angle Wj of several electric heating devices corresponding to the maximum temperature Tmaxj and minimum temperature Tminj of at least two temperatures, and determine the dew point temperature Kj based on the maximum temperature Tmaxj and humidity S. ; The angle Wj of the electric heating device corresponding to the minimum value of |Kj-Tminj| is used to determine the anti-condensation angle. The size of |Kj-Tminj| reflects whether the temperature field distribution around the electric heating device is uniform. The smaller the difference. , the more uniform the temperature field distribution, the smaller the risk of condensation generated by the electric heating device. Therefore, determine the angle Wj of the electric heating device corresponding to the minimum value of |Kj-Tminj| as the anti-condensation angle, and control the electric heating drive device to drive the electric heating device. The heating device is rotated to an anti-condensation angle. The anti-condensation angle found in this embodiment can ensure uniform temperature field distribution around the electric heating device and avoid or reduce condensation generated by the electric heating device.

The control method of the air conditioner is:

Air conditioner cooling or dehumidification operation;

Condensation condition detection step: obtain the humidity S detected by the humidity sensor, control the electric heating drive device to drive the electric heating device to rotate to a certain angle Wj, when the electric heating device is located at each angle Wj, the detection module drive device drives the temperature sensor to wind the electric heating The device rotates to obtain at least two temperatures detected during the rotation of the temperature sensor;

Dew condensation condition judgment steps: Determine the angle Wj of several electric heating devices corresponding to at least two temperatures, the maximum temperature Tmaxj and the minimum temperature Tminj. Determine the dew point temperature Kj based on the maximum temperature Tmaxj and humidity S; determine the minimum value of |Kj-Tminj| The angle Wj of the electric heating device is the anti-condensation angle, and the electric heating drive device drives the electric heating device to rotate to the anti-condensation angle.

When the air conditioner is running for cooling or dehumidification, the humidity detected by the humidity sensor is obtained, and the electric heating drive device is controlled to drive the electric heating device to rotate to several angles Wj within its rotation range. When the electric heating device is located at each angle Wj, the detection module drives The device drives the temperature sensor to rotate around the electric heating device. At least two temperatures are detected during the rotation of the temperature sensor. Preferably, real-time detection forms a temperature curve Xj. When the electric heating device 2 is at a specific angle, the temperature curve detected by the temperature sensor rotation can reflect this time. Whether the temperature field around the electric heating device 2 is uniform, determine the maximum temperature Tmaxj and minimum temperature Tminj of the temperature detected by the temperature sensor corresponding to the angle Wj of several electric heating devices, determine the dew point temperature Kj based on the maximum temperature Tmaxj and humidity S; determine |Kj When -Tminj| is the smallest, it means that the temperature field around the electric heating device 2 is the most uniform. Therefore, the angle Wj of the electric heating device corresponding to the minimum value of |Kj-Tminj| is selected as the anti-condensation angle, and the electric heating device is controlled to rotate to The anti-condensation angle can ensure the uniform distribution of the temperature field around the electric heating device, avoid or reduce the uneven temperature field caused by the alternating mixing of hot and cold air around the electric heating device, and avoid or reduce the generation and dripping of condensation water from the electric heating device.

As shown in Figure 7, the control method of the air conditioner in this embodiment is:

S1, air conditioner cooling or dehumidification operation.

S2. Obtain the humidity S detected by the humidity sensor; control the electric heating driving device to drive the electric heating device to rotate to a certain angle Wj. When the electric heating device is at each angle Wj, the detection module driving device drives the temperature sensor to rotate around the electric heating device to obtain The temperature sensor detects at least two temperatures during rotation.

S3. Determine the angle Wj of several electric heating devices corresponding to the maximum temperature Tmaxj and the minimum temperature Tminj of at least two temperatures, and determine the dew point temperature Kj based on the maximum temperature Tmaxj and the humidity S.

S4. Determine the angle Wj of the electric heating device corresponding to the minimum value of |Kj-Tminj| as the anti-condensation angle.

In this embodiment, an electric heating device driving device is added to the electric heating device, so that the angle of the electric heating device can be adjusted during actual operation of the air conditioner. Cooperate with the temperature sensor and humidity sensor installed around the electric heating device to monitor whether the temperature field around the electric heating device is uniform. Select the electric heating angle with the most uniform temperature field around the electric heating device as the anti-condensation angle to avoid or minimize condensation. of production. This embodiment can adjust the angle of the electric heating device according to the operating status of the air conditioner to make the temperature field around the electric heating device uniform and avoid the alternating mixing of hot and cold air around the electric heating device to produce condensed water and dripping.

Claims

An air conditioner, characterized in that the air conditioner includes:

electric heating device;

An electric heating drive device is used to drive the electric heating device to rotate;

A detection module located around the electric heating device;

A detection module driving device used to drive the detection module to rotate around the electric heating device;

A control module, used to detect condensation conditions when the air conditioner is running for cooling or dehumidification: used to control the electric heating drive device to drive the electric heating device to rotate to a certain angle Wj, and used to control the electric heating device when the electric heating device is running. When the device is located at each angle Wj, the detection module driving device drives the detection module to rotate around the electric heating device to obtain at least two parameters detected during the rotation of the detection module;

Used to enter the condensation condition judgment after the condensation condition detection is completed: used to determine the angle Wj of several electric heating devices corresponding to the maximum value Tmaxj and the minimum value Tminj of at least two parameters, and used to calculate the maximum value Tmaxj and the minimum value The difference in Tminj is used to determine the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum value Tmaxj and the minimum value Tminj. It is the anti-condensation angle. The electric heating drive device is controlled to drive the electric heating device to rotate to The anti-condensation angle.
The air conditioner according to claim 1, wherein the detection module includes a temperature sensor arranged around the electric heating device;

A control module, used to detect condensation conditions when the air conditioner is running for cooling or dehumidification: used to control the electric heating drive device to drive the electric heating device to rotate to a certain angle Wj, and used to control the electric heating device when the electric heating device is running. When the device is located at each angle Wj, the detection module driving device drives the temperature sensor to rotate around the electric heating device to obtain at least two temperatures detected during the rotation of the temperature sensor;

Used to enter the condensation condition judgment after the condensation condition detection is completed: used to determine the maximum temperature Tmaxj and minimum temperature Tminj of at least two temperatures corresponding to the angle Wj of several electric heating devices, and used to calculate the maximum temperature Tmaxj and minimum temperature The difference in temperature Tminj is used to determine the angle Wj of the electric heating device corresponding to the minimum value of the difference between the maximum temperature Tmaxj and the minimum temperature Tminj 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 air conditioner according to claim 1, wherein the detection module includes a humidity sensor and a temperature sensor arranged around the electric heating device, and the detection module driving device at least drives the temperature sensor around the electric heating device. The device rotates;

A control module used to detect condensation conditions when the air conditioner is running for cooling or dehumidification: to obtain the humidity S detected by the humidity sensor; to control the electric heating drive device to drive the electric heating device to rotate to several angles Wj, for when the electric heating device is at each angle Wj, the detection module driving device drives the temperature sensor to rotate around the electric heating device to obtain the temperature detected during the rotation of the temperature sensor. at least two temperatures;

Used to enter the condensation condition judgment after the condensation condition detection is completed: used to determine the maximum temperature Tmaxj and minimum temperature Tminj of at least two temperatures corresponding to the angle Wj of several electric heating devices, according to the maximum temperature Tmaxj and humidity S determines the dew point temperature Kj; used to determine the angle Wj of the electric heating device corresponding to the minimum value of |Kj-Tminj| Anti-condensation angle.
The air conditioner according to any one of claims 1 to 3, characterized in that the control module is used to determine whether the operating parameters of the air conditioner occur when the electric heating device is located at the anti-condensation angle. Change is used to detect condensation conditions after running for a set time according to the changed operating parameters when the operating parameters of the air conditioner change.
The air conditioner according to any one of claims 1 to 3, characterized in that the control module is used to control the electric heating drive device to drive the electric heating device at an initial angle to (180 degree - initial angle) rotation range, used to drive the detection module to rotate from the initial angle to the end angle or from the end angle to when the electric heating device is located at each angle Wj through the detection module driving device Initial angle, during the rotation of the detection module, the detection module detects parameters in real time to form a parameter curve.
A control method for an air conditioner, characterized in that the air conditioner includes an electric heating device, an electric heating driving device, a detection module and a detection module driving device; 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; the detection module driving device is used to drive the detection module to rotate around the electric heating device; the control method is:

The air conditioner operates in cooling or dehumidification operation;

Condensation condition detection step: control the electric heating driving device to drive the electric heating device to rotate to several angles Wj. When the electric heating device is at each angle Wj, the detection module driving device drives the detection module to rotate around The electric heating device rotates to obtain at least two parameters detected during the rotation of the detection module;

Dew condensation condition judgment step: determine the angle Wj of several electric heating devices corresponding to the maximum value Tmaxj and the minimum value Tminj of at least two parameters, calculate the difference between the maximum value Tmaxj and the minimum value Tminj, and determine the difference between the maximum value Tmaxj and the minimum value Tminj The angle Wj of the electric heating device corresponding to the minimum value of the difference is the anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.
The control method of an air conditioner according to claim 6, wherein the detection module includes a temperature sensor provided around the electric heating device; the control method is:

When the air conditioner is operating for cooling or dehumidification;

Condensation condition detection step: control the electric heating drive device to drive the electric heating device to rotate to several angles Wj. When the electric heating device is located at each angle Wj, the detection module drive device drives the temperature sensor to rotate around The electric heating device rotates to obtain at least two temperatures detected during the rotation of the temperature sensor;

Dew condensation condition judgment step: determine the maximum temperature Tmaxj and minimum temperature Tminj of at least two temperatures corresponding to the angle Wj of several electric heating devices, calculate the difference between the maximum temperature Tmaxj and the minimum temperature Tminj, and determine the maximum temperature Tmaxj and the minimum temperature Tminj The angle Wj of the electric heating device corresponding to the minimum value of the difference is the anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.
The control method of an air conditioner according to claim 6, characterized in that the detection module includes a humidity sensor and a temperature sensor arranged around the electric heating device, and the detection module driving device at least drives the temperature sensor around the The electric heating device rotates; the control method is:

When the air conditioner is operating for cooling or dehumidification;

Condensation condition detection step: obtain the humidity S detected by the humidity sensor; control the electric heating drive device to drive the electric heating device to rotate to several angles Wj. When the electric heating device is located at each angle Wj, the The detection module driving device drives the temperature sensor to rotate around the electric heating device to obtain at least two temperatures detected during the rotation of the temperature sensor;

Dew condensation condition judgment step: determine the maximum temperature Tmaxj and minimum temperature Tminj of at least two temperatures corresponding to the angle Wj of several electric heating devices, determine the dew point temperature Kj according to the maximum temperature Tmaxj and humidity S; determine |Kj-Tminj The angle Wj of the electric heating device corresponding to the minimum value of | is the anti-condensation angle, and the electric heating driving device drives the electric heating device to rotate to the anti-condensation angle.
The control method of an air conditioner according to any one of claims 6 to 8, characterized in that when the electric heating device is located at the anti-condensation angle, it is determined whether the operating parameters of the air conditioner have changed. When the operating parameters of the air conditioner change, the condensation condition detection step is entered after running for a set time according to the changed operating parameters.
The control method of an air conditioner according to any one of claims 6 to 8, characterized in that, in the condensation condition detection step, the electric heating driving device is controlled to drive the electric heating device at an initial angle to ( 180 degrees - initial angle), when the electric heating device is located at each angle Wj, the detection module driving device drives the detection module to rotate from the initial angle to the end angle or from the end angle to the initial angle. , during the rotation of the detection module, the detection module detects parameters in real time to form a parameter curve.