A zero-wind-feel air conditioner and its control method

Abstract

This invention provides a zero-wind-feel air conditioner and its control method, comprising an air conditioner body, an air outlet, and an air guide plate disposed on the outer side of the air outlet. The air guide plate has a first microporous structure and a cavity structure. An electric heater is disposed near one end of the cavity structure, and the electric heater has a second microporous structure. The electric heater slides within the cavity structure. This invention, by placing an electric heater with a microporous structure within the cavity of the air guide plate, enables the air conditioner to have a secondary airflow diffusion effect, not only improving the zero-wind-feel effect, but also providing multiple zero-wind-feel states by allowing the electric heater to move within the air guide plate, giving users more options. Furthermore, the electric heater effectively prevents condensation in zero-wind-feel mode and avoids large fluctuations in indoor temperature, improving user comfort.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically, to a zero-wind-feel air conditioner and its control method. Background Technology

[0002] As people's living standards improve, air conditioners have become one of the essential home appliances. As a widely used household appliance, air conditioners have become an integral part of people's lives.

[0003] Existing zero-wind-feel air conditioners have ventilation holes set on the air guide plate. When the air is ventilated, the ventilation holes can disperse the airflow to reduce the wind speed and disrupt the direction of airflow, thus avoiding direct airflow onto the human body.

[0004] However, the above solution has the following problems: (1) Only the air guide plate can produce air in the zero wind mode. The air outlet area on the air guide plate is small and condensation is very easy to occur; (2) When the air conditioner is cooling, the temperature of the air outlet is low and the indoor temperature is much different, which causes water vapor in the air to condense and accumulate, making it easy for condensation to form on the surface of the air guide plate. A large amount of condensation accumulated on the air guide plate will hinder the air outlet, reduce the air volume, and the blown air will carry water vapor, resulting in poor user comfort. Summary of the Invention

[0005] In view of this, the present invention aims to propose a zero-wind-feel air conditioner and its control method. This addresses the problems in existing technologies where only the air guide plate emits air in zero-wind-feel mode, resulting in a small air outlet area on the air guide plate that easily leads to condensation. Furthermore, when the air conditioner is cooling, the temperature at the air outlet is low, while the indoor temperature differs significantly, causing water vapor in the air to condense and accumulate. This makes it easy for condensation to form on the surface of the air guide plate. A large amount of condensation accumulating on the air guide plate obstructs airflow, reducing the air volume, and the blown air contains moisture, resulting in poor user comfort.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] A zero-wind-feel air conditioner includes an air conditioning body, the air conditioning body includes an air outlet, an air guide plate is provided on the outside of the air outlet, the air guide plate has a first microporous structure, the air guide plate has a cavity structure, an electric heater is provided at one end near the cavity structure, the electric heater has a second microporous structure, and the electric heater slides within the cavity structure.

[0008] This invention enables the air conditioner to have a secondary airflow diffusion function by setting an electric heater with a microporous structure in the cavity of the air guide plate. This not only improves the zero-wind-feel effect, but also allows for multiple zero-wind-feel states depending on the position of the electric heater within the air guide plate, giving users more options. Furthermore, the electric heater can effectively prevent condensation in the zero-wind-feel mode and avoid large fluctuations in indoor temperature, which could reduce user comfort.

[0009] Furthermore, the electric heater includes a flexible body and a connecting part, the second microporous structure is located on the flexible body, the connecting part is located at both ends of the flexible body, and the connecting part is connected to the power supply part through a connecting line.

[0010] Furthermore, the electric heater is mounted on the reel.

[0011] Furthermore, the pore size of the first microporous structure is larger than that of the second microporous structure.

[0012] This setting can improve the zero-wind effect.

[0013] A control method for a zero-wind-sensing air conditioner includes the aforementioned zero-wind-sensing air conditioner, comprising a first zero-wind-sensing state and a second zero-wind-sensing state, wherein the first zero-wind-sensing state and the second zero-wind-sensing state can be switched between each other. In the first zero-wind-sensing state, an air guide plate blocks the air outlet; in the second zero-wind-sensing state, the air guide plate blocks the air outlet, and an electric heater is disposed within the cavity structure.

[0014] Furthermore, the control method includes the following steps:

[0015] S100: In air conditioning cooling mode, turn on zero-wind-feel mode, enter the first zero-wind-feel state, and start timing;

[0016] S200: When the first preset time is reached, the SSD control unit switches the air conditioner between the first zero-wind-feel state and the second zero-wind-feel state according to the human body's comfort level.

[0017] This setting offers multiple modes and enhances user comfort.

[0018] Further, step S200 includes the following:

[0019] S1. Determine the zero-wind-feel state of the air conditioner based on the human body comfort level (SSD).

[0020] S2, Real-time monitoring of indoor temperature T 内 Relative humidity (RH) and outlet air temperature (T) of the air guide plate 出 ;

[0021] S3. Determine the dew point temperature T based on the indoor temperature and relative humidity. LU;

[0022] S4. Determine the dew point temperature T LU With T 出 The critical temperature difference L between them 临 To determine whether the electric heater is activated in a zero-wind-feel state.

[0023] This setting improves comfort for the human body in a zero-wind state while also preventing condensation from forming on the air deflector.

[0024] Furthermore, step S4 also includes the following steps:

[0025] S41, when L 临 > First preset value: Zero-wind air conditioner blows air normally, electric heater is in the off state;

[0026] S42, When the second preset value ≤ L 临 If the value is less than or equal to the first preset value, start the electric heater.

[0027] S43, when L 临 <Second preset value: Do not start the electric heater, increase the fan speed.

[0028] This setting effectively prevents condensation from forming on the air deflector, while also improving comfort for the human body in a zero-wind-feel state.

[0029] Further, step S42 includes the following steps:

[0030] S421. When in the first zero-wind-feel state, move the electric heater into the cavity structure of the air guide plate; when in the second zero-wind-feel state, directly heat the electric heater.

[0031] S422. Based on the voltage applied to the electric heater, obtain the heating temperature T on the electric heater. 发 T 发 .

[0032] This setting can prevent condensation from forming under different zero-wind conditions, while improving human comfort.

[0033] Further, step S422 includes the following steps:

[0034] S4221, when T 发 ≥T 出 When +ΔT, reduce the voltage applied by the electric heater so that T 出 ≤T 发 <T 出 +ΔT;

[0035] S4223, when T 出 ≤T 发 <T 出At +ΔT, the electric heater operates at T. 发 Run for the first preset time t 设 Then, in the first zero-wind-feel state, the electric heater is removed from the cavity of the air guide plate, and the zero-wind-feel air conditioner blows air normally; in the second zero-wind-feel state, proceed to step S2.

[0036] S4224, when T 发 <T 出 At that time, increase the voltage applied by the electric heater, so that T 出 ≤T 发 <T 出 +ΔT.

[0037] This setting ensures normal airflow even in zero-wind conditions, preventing condensation while avoiding excessive heat that could reduce user comfort.

[0038] Compared to existing technologies, the zero-wind-feel air conditioner and its control method described in this invention have the following advantages:

[0039] 1) This invention enables the air conditioner to have a secondary airflow diffusion function by setting an electric heater with a microporous structure in the cavity of the air guide plate. This not only improves the zero-wind-feel effect, but also allows the electric heater to move within the air guide plate, providing multiple zero-wind-feel states for users to choose from. Furthermore, the electric heater can effectively prevent condensation in the zero-wind-feel mode and avoid large fluctuations in indoor temperature, thus improving user comfort.

[0040] 2) The control method of the zero-wind-feel air conditioner of the present invention can provide various zero-wind-feel states to avoid condensation problems on the air guide plate. The method is simple, logically clear and easy to implement. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of the zero-wind-feel air conditioner of the present invention;

[0042] Figure 2 This is a schematic diagram of the air guide plate and electric heater of the present invention;

[0043] Figure 3 This is a schematic diagram of the air guide plate of the present invention;

[0044] Figure 4 This is a schematic diagram of the structure of the electric heater of the present invention;

[0045] Figure 5 This is a schematic diagram of the connection structure of the electric heater of the present invention;

[0046] Figure 6 This is a flowchart of the control method for the zero-wind-feel air conditioner of the present invention.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1-Air conditioner main body, 11-Air outlet, 12-Air guide plate, 121-Cavity structure, 122-First microporous structure, 13-Rotating shaft, 2-Electric heater, 21-Flexible main body, 211-Second microporous structure, 22-Connecting part, 23-Connecting wire, 24-Power supply part, 25-Roller. Detailed Implementation

[0049] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0050] Example 1

[0051] This invention proposes a zero-wind-feel air conditioner, including an air conditioner body 1. The air conditioner body 1 includes an air outlet 11, and an air guide plate 12 is provided on the outer side of the air outlet 11. The air guide plate 12 has a first microporous structure 122 and a cavity structure 121. An electric heater 2 is provided near one end of the cavity structure 121. The electric heater 2 has a second microporous structure 211 and slides within the cavity structure 121.

[0052] The present invention provides an electric heater 2 on the air guide plate 12, which can increase the temperature of the air guide plate, prevent condensation from forming on the air guide plate, and reduce human comfort.

[0053] Specifically, the electric heater 2 is detachably connected to the air guide plate 12.

[0054] Specifically, the two ends of the electric heater 2 are connected to the power supply unit 24 via connecting wires 23. As an embodiment of this application, the electric heater 2 is heated by applying a certain voltage through the power supply unit, thereby increasing the surface temperature of the electric heater and thus increasing the temperature of the air outlet and preventing condensation from forming on the air guide plate.

[0055] Specifically, one end of the electric heater is connected to the positive terminal of the power supply unit 24, and the other end of the electric heater is connected to the negative terminal of the power supply unit 24.

[0056] Specifically, the electric heater is detachably installed inside the air guide plate cavity structure, wherein the power supply unit 24 is reasonably arranged according to the installation position of the electric heater, as long as it can provide a continuous DC voltage when the electric heater needs to heat.

[0057] Specifically, in this application, the electric heater 2 is a flexible conductive element, which includes a flexible body 21 and connecting portions 22, with the connecting portions 22 located at both ends of the flexible body 21.

[0058] The flexible substrate in this application possesses a certain degree of conductivity, exhibits uniform conductivity, and its size at least covers the air guide plate. Under a certain applied voltage, it can generate a sustained heating temperature on its surface, and this heating temperature is related to the size, resistance, voltage, and related properties of the flexible conductive component. The flexible conductive component can be an existing uniformly conductive fabric, a porous polymer membrane, a metal mesh, etc.

[0059] Preferably, the flexible conductive element is a conductive fabric, and the conductive fabric has a water-repellent function to prevent the heating performance of the conductive fabric from being affected during electric heating. When not heating, the microporous structure of the air guide plate first disperses the airflow to a certain extent, and the conductive fabric disperses the airflow a second time, resulting in a better user experience when the zero-wind mode is turned on.

[0060] The connecting part in this application is a metal conductive plate, and the connecting part is located on the inner surface and outer surface of the flexible body. The connection between the connecting part and the flexible body can also be made by other connecting parts, as long as the connection between the connecting part and the flexible body is firm.

[0061] Specifically, the air conditioner body includes a rotating shaft 13, the two ends of which are mounted on the air conditioner body 1, and the rotating shaft 13 can realize the rotation of the air guide plate.

[0062] Specifically, the electric heater is mounted on the reel 25, one end of the electric heater 2 is connected to the reel 25, and the other end of the electric heater is connected to a moving device, which enables the end of the electric heater away from the reel to slide within the cavity.

[0063] In a preferred embodiment of this application, the roller is mounted on the air conditioner body and in the cavity structure near the air guide plate. The roller is connected to a motor, enabling the motor to start and allowing the electric heater to roll on the roller. Slide rails are provided at both ends of the cavity. The moving device includes a slider, a drive device, and a controller. The drive device can drive the slider to move along the slide rails. A clamp is provided on the slider to easily clamp the end of the flexible body away from the roller. The controller can control the drive device and the clamp to clamp and release the flexible body. The drive device, controller, slider, and clamp are all existing structures, as long as they satisfy the requirement that the slider moves to drive the flexible conductive component. When the electric heater is not needed, the slider is disconnected from the electric heater; when the electric heater is needed, the slider moves the flexible conductive component.

[0064] This application proposes a control method for a zero-wind-sensor air conditioner, including a first zero-wind-sensor state and a second zero-wind-sensor state, which can be switched between each other. In the first zero-wind-sensor state, the air guide plate blocks the air outlet; in the second zero-wind-sensor state, the air guide plate blocks the air outlet, and the slider is moved so that the flexible conductive element is disposed within the cavity structure.

[0065] Specifically, the control method includes the following steps:

[0066] S100: In air conditioning cooling mode, turn on zero-wind-feel mode, enter the first zero-wind-feel state, and start timing;

[0067] S200, when the first preset time is reached, the SSD controls the air conditioner to switch between the first zero-wind-feel state and the second zero-wind-feel state according to the body comfort level.

[0068] The human body comfort SSD of this application is calculated using indoor temperature Tinner, relative humidity RH, and airflow speed Q.

[0069] Specifically, step S200 includes the following:

[0070] S1. Determine the zero-wind-feel state of the air conditioner based on the human body's perceived comfort level (SSD).

[0071] S2, Real-time monitoring of indoor temperature T 内 Relative humidity (RH) and outlet air temperature (T) of the air guide plate 出 ;

[0072] S3. Determine the dew point temperature T based on the indoor temperature and relative humidity. LU ;

[0073] S4. Determine the dew point temperature T LU With T 出 The critical temperature difference L between them 临 To determine whether the electric heater is activated in a zero-wind-feel state. Among them, L 临 =T 出 -T LU ,

[0074] It should be noted that the dew point temperature T LU The definition is: in the current indoor environment (indoor temperature T) NH The lowest temperature at which condensation occurs (relative humidity RH). Theoretically, as long as T... 出 -T LU If the value is greater than 0, condensation will not occur.

[0075] Specifically, step S4 also includes the following steps:

[0076] S41, when L 临> The first preset value indicates that there is no risk of condensation on the air guide plate, the zero-wind air conditioner blows air normally, and the electric heater is in the off state;

[0077] Preferably, the first preset value of the present invention is 3 to 6°C.

[0078] S42, When the second preset value ≤ L 临 If the value is less than or equal to the first preset value, the electric heater will be activated. There is a risk of condensation forming on the air guide plate; in this case, the surface of the air guide plate will be heated by the electric heater.

[0079] Preferably, the second preset value of the present invention is 0 to 3°C.

[0080] S43, when L 临 <Second preset value: The electric heater is not activated, and the fan speed is increased. At this time, condensation has already formed on the air guide plate, but the electric heater is not activated. This setting prevents the condensation from affecting the electric heater. By increasing the fan speed, the condensation on the air guide plate evaporates quickly.>

[0081] Specifically, step S42 includes the following steps:

[0082] S421. When in the first zero-wind-feel mode, the electric heater is moved into the cavity structure of the air guide plate; when in the second zero-wind-feel mode, the electric heater is directly heated.

[0083] S422. Based on the voltage applied to the electric heater, obtain the heating temperature T on the electric heater. 发 T 发 .

[0084] Specifically, step S422 includes the following steps:

[0085] S4221, when T 发 ≥T 出 When +ΔT, reduce the voltage applied by the electric heater so that T 出 ≤T 发 <T 出 +ΔT;

[0086] S4223, when T 出 ≤T 发 <T 出 At +ΔT, the electric heater operates at T. 发 Run for the first preset time t 设 Then, in the first zero-wind-feel state, the electric heater is removed from the cavity of the air guide plate, and the air blows normally in the first zero-wind-feel state; in the second zero-wind-feel state, proceed to step S2.

[0087] S4224, when T 发 <T 出At that time, increase the voltage applied by the electric heater, so that T 出 ≤T 发 <T 出 +ΔT.

[0088] In this application, ΔT refers to the temperature difference between the fluctuating outlet temperature at the human comfort level, that is, the difference between the maximum and minimum outlet temperature.

[0089] The heating temperature in this application has certain requirements, preferably between 15 and 37°C. If the heating temperature is too high, the cooling effect will not be achieved; if the heating temperature is too low, the decondensation effect will be insufficient, both resulting in a poor user experience. The voltage applied in this invention starts at a relatively low voltage.

[0090] The control method for the zero-wind-feel air conditioner of this application also includes a control device, comprising the following:

[0091] The first detection unit is used to detect the current indoor temperature, relative humidity, and airflow speed.

[0092] The calculation unit is used to calculate the current critical temperature difference in the room based on the indoor temperature and relative humidity.

[0093] The calculation unit is also used to calculate human comfort based on indoor temperature, relative humidity, and airflow speed;

[0094] The second detection unit is used to obtain the air outlet temperature of the air guide plate;

[0095] The third detection unit is used to obtain the heating temperature of the electric heater based on the voltage applied by the electric heater;

[0096] The control unit is used to control the electric heater according to the critical temperature difference, and to control the movement and clamping of the slider to control the movement of the electric heater. It can also be used to control the motor connected to the reel. That is, the control unit can realize the movement of the electric heater in the cavity structure and the reel winding.

[0097] The control unit is also used to control the voltage applied to the electric heater based on the heating temperature of the electric heater and the air outlet temperature of the air guide plate.

[0098] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A control method of a zero-wind air conditioner, characterized by, The zero-wind-sensing air conditioner comprises an air conditioner main body (1), the air conditioner main body (1) comprises an air outlet (11), a guide vane (12) is arranged outside the air outlet (11), the guide vane (12) is provided with a first microporous structure (122), the guide vane has a cavity structure (121), and an electric heater (2) is arranged at one end close to the cavity structure (121); The electric heater (2) has a second microporous structure (211), the electric heater (2) slides in the cavity structure (121), the electric heater (2) comprises a flexible main body (21), and the flexible main body (21) is one of a conductive fabric and a high polymer porous film which are uniformly conductive; The control method comprises a first zero-wind-sensing state and a second zero-wind-sensing state, the first zero-wind-sensing state and the second zero-wind-sensing state can be switched to each other, in the first zero-wind-sensing state, the guide vane shields the air outlet, and in the second zero-wind-sensing state, the guide vane shields the air outlet and the electric heater is arranged in the cavity structure; The control method comprises the following steps: S100, in the air conditioning cooling mode, the zero-wind-sensing mode is started, the first zero-wind-sensing state is entered, and timing is started; S200, when the first preset time is reached, the air conditioner is controlled to be switched between the first zero-wind-sensing state and the second zero-wind-sensing state according to the human body thermal comfort degree SSD; step S200 comprises the following steps: S1, the zero-wind-sensing state of the air conditioner is determined according to the human body thermal comfort degree SSD; S2, detecting indoor temperature T, relative humidity RH and air outlet temperature T of the air deflector in real time 内 出 ;​ S3. According to the indoor temperature, relative humidity, determine the dew point temperature T LU ; S4, determining whether to start the electric heater in the zero wind feeling state by judging the critical temperature difference L between the dew point temperature T LU and T 出 . 临 S4, determining whether to start the electric heater in the zero wind feeling state by judging the critical temperature difference L between the dew point temperature T LU and T 出 . 临 S4, determining whether to start the electric heater in the zero wind feeling state by judging the critical temperature difference L between the dew point temperature T S41, when L 临 > the first preset value, the zero wind sensing air conditioner blows normally, and the electric heater is in the closed state; S42, when the second preset value ≤ L 临 ≤ the first preset value, start the electric heater; S43, when L 临 <Second preset value, do not start the electric heater, increase the speed of the fan; In step S42, the following steps are included: S421, when the first zero-wind-sensing state is reached, the electric heater is moved into the cavity structure of the guide vane, and the electric heater is heated; when the second zero-wind-sensing state is reached, the electric heater is directly heated; S422, obtaining the heat generation temperature T on the electric heater based on the voltage applied by the electric heater 发 comprising the following steps: S4221, when T 发 ≥ T 出 + ΔT, reduce the voltage applied by the electric heater so that T 出 ≤ T 发 < T 出 + ΔT; S4223, when T 出 ≤ T 发 < T 出 + ΔT, the electric heater runs at T 发 for a first preset time t 设 , and then is removed from the cavity structure of the deflector in a first zero wind sensing state; in a second zero wind sensing state, return to step S2. S4224, when T 发 <T 出 , increase the voltage applied by the electric heater to make T 出 ≤ T 发 <T 出 + ΔT.

2. The control method of the zero-sensitivity air conditioner according to claim 1, wherein The electric heater (2) further comprises a connecting part (22), the second microporous structure (211) is located on the flexible main body (21), the connecting part (22) is located at two ends of the flexible main body (21), and the connecting part (22) is connected with a power supply part (24) through a connecting line (23).

3. The control method of the zero-sensing air conditioner according to claim 1, wherein The electric heater (2) is arranged on a reel (25).

4. The control method of the zero wind sensing air conditioner according to claim 1, wherein, The pore diameter of the first microporous structure (122) is greater than the pore diameter of the second microporous structure (211).

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