Zero-wind air conditioner and control method thereof

Abstract

The application provides a zero-wind-sense air conditioner and a control method thereof. The air conditioner comprises an air conditioner main body, an air outlet, a wind deflector arranged outside the air outlet, an electric heater arranged on the wind deflector, a first microporous structure arranged on the wind deflector, a flexible main body, and a connecting part. The flexible main body has a second microporous structure and covers the wind deflector. The connecting part is arranged at both ends of the flexible main body and is connected with a power supply part through a connecting line. The electric heater with the microporous structure arranged on the wind deflector can make the air conditioner have the secondary flow effect, improve the zero-wind-sense effect, effectively avoid the condensation in the zero-wind-sense mode, avoid the large indoor temperature fluctuation, and improve the user comfort.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a zero-wind-sense air conditioner and a control method thereof. BACKGROUND

[0002] With the improvement of people's living standards, air conditioners have become one of the necessary household appliances. As a widely used household appliance, air conditioners have become more deeply involved in people's lives.

[0003] The zero-wind-sense air conditioner of the prior art is provided with a ventilation hole on the air deflector, and the ventilation hole can disperse the air flow when the air is discharged, so as to reduce the wind speed, disrupt the flow direction of the air, and avoid direct blowing to the human body.

[0004] However, the above-mentioned scheme has the following problems: (1) only the air deflector discharges air in the zero-wind-sense mode, and the small air discharge area on the air deflector is prone to condensation; (2) when the air conditioner is cooling, the temperature of the air outlet of the air conditioner is relatively low, and the indoor temperature differs greatly, resulting in condensation and accumulation of water vapor in the air, which makes the surface of the air deflector prone to condensation, and a large amount of condensation gathered on the air deflector will hinder the air discharge, reduce the air discharge volume, and the blown air has water vapor, resulting in poor user comfort. SUMMARY

[0005] Therefore, the present application aims to provide a zero-wind-sense air conditioner and a control method thereof, so as to solve the problems in the prior art that only the air deflector discharges air in the zero-wind-sense mode, the small air discharge area on the air deflector is prone to condensation, when the air conditioner is cooling, the temperature of the air outlet of the air conditioner is relatively low, and the indoor temperature differs greatly, resulting in condensation and accumulation of water vapor in the air, which makes the surface of the air deflector prone to condensation, a large amount of condensation gathered on the air deflector will hinder the air discharge, reduce the air discharge volume, and the blown air has water vapor, resulting in poor user comfort.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0007] A zero-wind-sense air conditioner, comprising an air conditioner main body, the air conditioner main body comprising an air outlet, an air deflector being arranged outside the air outlet, an electric heater being arranged on the air deflector, the air deflector having a first microporous structure, the electric heater comprising a flexible main body and a connecting portion, the flexible main body having a second microporous structure, the flexible main body covering the air deflector, the connecting portion being located at both ends of the flexible main body, and the electric heater being connected with a power supply portion through a connecting line.

[0008] This setup improves the zero-wind-feel effect by installing an electric heater with a microporous structure on the air guide plate, allowing the airflow to be diffused secondary through the air guide plate and the electric heater. Furthermore, by applying a certain voltage, the electric heater appropriately increases the outlet air temperature, effectively preventing condensation and avoiding large fluctuations in indoor temperature, thus improving user comfort.

[0009] Furthermore, the electric heater is disposed on the inner or outer side of the air guide plate.

[0010] Furthermore, the air guide plate is provided with a groove, and the flexible body is disposed in the groove, so that the flexible body is in close contact with the air guide plate.

[0011] This design allows the electric heater to provide heat to the air guide plate more quickly, thereby appropriately increasing the outlet air temperature while ensuring the temperature difference fluctuation range, and preventing condensation from forming on the air guide plate.

[0012] Furthermore, the pore size of the first microporous structure is larger than that of the second microporous structure.

[0013] This setting can improve the effect of zero wind.

[0014] Furthermore, the air conditioner body includes a rotating shaft, the two ends of which are movably connected to the air conditioner body.

[0015] This setting allows the air conditioner to provide multiple modes and achieve multiple airflow methods.

[0016] Furthermore, the electric heater is detachably connected to the air guide plate.

[0017] This feature makes it easy to replace the electric heater later.

[0018] A method for controlling a zero-wind-feel air conditioner, comprising the aforementioned zero-wind-feel air conditioner, includes the following steps:

[0019] S1. In air conditioning cooling mode, turn on zero-wind mode;

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

[0021] S3. Determine the dew point temperature T based on the indoor temperature and 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 started or not;

[0023] This setting not only improves human comfort in a zero-wind state, but also prevents condensation from forming on the air deflector.

[0024] Furthermore, step S4 also includes:

[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 setup aims to ensure the safety of the electric heater while effectively preventing condensation on the air guide plate and improving comfort for people in a zero-wind-feel state.

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

[0030] Step S42 includes the following steps:

[0031] S421. Based on the voltage applied to the electric heater, obtain the heating temperature T on the electric heater. 发 ;

[0032] S422, when T 发 ≥T 出 When +ΔT, reduce the voltage applied by the electric heater and return to step S421;

[0033] S423, 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, return to step S2;

[0034] S424, when T 发 <T 出 Increase the voltage applied by the electric heater and return to step S421.

[0035] This setting ensures normal airflow even in zero-wind conditions, while preventing excessive fluctuations in indoor temperature due to heat generation, and ultimately avoiding condensation.

[0036] Furthermore, it also includes a control device, comprising the following:

[0037] The first detection unit is used to detect the current indoor temperature and humidity.

[0038] The calculation unit is used to calculate the current critical temperature difference in the room based on the indoor temperature and indoor humidity.

[0039] The second detection unit is used to obtain the air outlet temperature of the air guide plate;

[0040] The third detection unit is used to obtain the heating temperature of the electric heater based on the voltage applied by the electric heater;

[0041] A control unit is used to control the electric heater according to the critical temperature difference;

[0042] 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.

[0043] The control device in this setup enables the zero-wind-feel mode of the zero-wind-feel air conditioner and prevents condensation from forming on the air deflector.

[0044] Compared with existing technologies, the zero-wind-feel air conditioner and its control method described in this invention have the following advantages:

[0045] 1) This invention improves the zero-wind-feel effect by setting an electric heater with a microporous structure on the air guide plate, so that the airflow is diffused secondary through the air guide plate and the electric heater. In addition, the electric heater applies a certain voltage to appropriately increase the outlet air temperature, which can effectively prevent the generation of condensation and avoid large fluctuations in indoor temperature, thereby improving user comfort.

[0046] 2) By setting grooves on the air guide plate in this application, the main body of the electric heater can be in close contact with the air guide plate, so that the electric heater can provide heat to the air guide plate more quickly when it is heating up. In this way, while ensuring the temperature difference fluctuation range, the outlet air temperature can be appropriately increased, and condensation can be avoided on the air guide plate. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the overall structure of the zero-wind-feel air conditioner of the present invention;

[0048] Figure 2 This is a schematic diagram of the air guide plate and electric heater of the present invention;

[0049] Figure 3 This is a schematic diagram of the connection structure of the electric heater of the present invention;

[0050] Figure 4 This is a flowchart of the control method for the zero-wind-feel air conditioner of the present invention.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1-Air conditioner main body, 11-Air outlet, 12-Air guide plate, 121-Groove, 122-First microporous structure, 13-Rotating shaft, 2-Electric heater, 21-Flexible main body, 211-Second microporous structure, 22-Connecting part, 3-Connecting wire, 4-Power supply part. Detailed Implementation

[0053] 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.

[0054] In existing technologies, to avoid condensation during zero-wind operation, the compressor frequency is usually changed. However, changing the compressor frequency increases the noise of the air conditioning system, resulting in a poor user experience. Furthermore, changing the compressor frequency causes large fluctuations in indoor temperature, causing discomfort to the human body. Therefore, this application is hereby filed.

[0055] Example 1

[0056] like Figures 1-4 As shown, the present invention proposes a zero-wind-feel air conditioner, including an air conditioner body 1, the air conditioner body 1 including an air outlet 11, an air guide plate 12 disposed on the outside of the air outlet 11, the air guide plate having a first microporous structure 122, an electric heater 2 disposed on the air guide plate 12, the electric heater 2 having a second microporous structure 211, and the electric heater 2 being detachably connected to the air guide plate 12.

[0057] 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.

[0058] Specifically, the two ends of the electric heater 2 are connected to the power supply unit 4 via connecting wires 3. As an embodiment of this application, the electric heater 2 is supplied with a certain voltage by the power supply unit, which causes the surface of the electric heater to heat up, thereby increasing the temperature of the air guide plate surface, thus increasing the temperature of the air outlet and preventing condensation from occurring on the air guide plate.

[0059] Specifically, one end of the electric heater is connected to the positive terminal of the power supply unit 4, and the other end of the electric heater is connected to the negative terminal of the power supply unit 4.

[0060] Specifically, the electric heater 2 is disposed on the inner or outer side of the air guide plate 12.

[0061] Specifically, the electric heater is detachably installed on the inner or outer side of the air guide plate, wherein the power supply unit 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.

[0062] Specifically, in this application, the electric heater 2 is a flexible conductive component, which includes a flexible body 21 and a connecting part 22. The connecting part 22 is located at both ends of the flexible body 21. The air guide plate 12 is provided with a groove 121, and the connecting part 22 is disposed in the groove 121, so that the flexible body 21 is in close contact with the air guide plate 12.

[0063] 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 other related properties of the flexible substrate. The flexible substrate can be an existing uniformly conductive fabric, a porous polymer membrane, a metal mesh, etc.

[0064] Preferably, the flexible main body 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.

[0065] 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.

[0066] 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.

[0067] This application discloses a zero-wind-feel air conditioner, which also includes a control device, as follows:

[0068] The first detection unit is used to detect the current indoor temperature and humidity.

[0069] The calculation unit is used to calculate the current critical temperature difference in the room based on the indoor temperature and indoor humidity.

[0070] The second detection unit is used to obtain the air outlet temperature of the air guide plate;

[0071] The third detection unit is used to obtain the heating temperature of the electric heater based on the voltage applied by the electric heater;

[0072] A control unit is used to control the electric heater according to the critical temperature difference;

[0073] 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.

[0074] The proposed solution adjusts the heating temperature of the electric heater by real-time monitoring of parameters such as indoor temperature and humidity when the air conditioner is in zero-wind-feel cooling mode. This improves the cooling capacity of the air conditioner and enhances the user experience while ensuring that condensation does not occur in the zero-wind-feel mode.

[0075] Specifically, the first detection unit is a temperature and humidity sensor, which is installed on the indoor unit of the air conditioner; the second detection unit is a temperature sensor, which is installed on the air guide plate of the indoor unit of the air conditioner; and the third detection unit is an infrared thermal imager, which is installed on the indoor unit of the air conditioner, and the temperature probe of the infrared thermal imager is close to the flexible body.

[0076] This application proposes a control method for a zero-wind-feel air conditioner, employing the aforementioned zero-wind-feel air conditioner, comprising the following steps:

[0077] S1. In air conditioning cooling mode, turn on zero-wind mode;

[0078] In this application, when the zero-wind mode is activated, the air deflector blocks the air outlet.

[0079] S2, Real-time monitoring of indoor temperature T 内 Indoor humidity (RH) and air outlet temperature (T) of the air guide plate 出 ;

[0080] S3. Determine the dew point temperature T based on the indoor temperature and humidity. LU ;

[0081] 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 started or not;

[0082] Among them, L 临 =T 出 -T LU ,

[0083] 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 will occur under indoor humidity (RH) conditions. Theoretically, as long as T... 出 -T LU If the value is greater than 0, condensation will not occur.

[0084] 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;

[0085] Preferably, the first preset value of the present invention is 3 to 6°C.

[0086] 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 heat-conducting plate is heated by the electric heater.

[0087] Preferably, the second preset value of the present invention is 0 to 3°C.

[0088] S421. Based on the voltage applied to the electric heater, obtain the heating temperature T on the electric heater. 发 ;

[0089] S422, when T 发 ≥T 出 When +ΔT, reduce the voltage applied by the electric heater and return to step S421;

[0090] S423, 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, return to step S2;

[0091] S424, when T 发 <T 出 Increase the voltage applied by the electric heater and return to step S421.

[0092] In this application, ΔT refers to the temperature difference between the fluctuating air outlet temperature at the human comfort level, that is, the difference between the maximum and minimum set air outlet temperature.

[0093] S43, when L 临 ≤2 preset value. At this point, condensation has already formed on the air guide plate, and the electric heater does not start. This setting prevents the condensation from having an unsafe impact on the electric heater. At this time, the condensation on the air guide plate is evaporated quickly by increasing the fan speed of the air conditioner.

[0094] 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.

[0095] The control method for the zero-wind-feel air conditioner in this application is applicable not only to the cooling mode of zero-wind-feel mode, but also to the cooling mode with a wind sensation. When there is a wind sensation, the air guide plate is rotated at a certain angle by rotating the rotating shaft so that it does not block the air outlet. By applying voltage to the electric heater, condensation is prevented from forming on the air guide plate.

[0096] 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, Zero wind feeling air conditioner includes air conditioner main body (1), the air conditioner main body (1) includes air outlet (11), the air outlet (11) outside is provided with air deflector (12), the air deflector (12) is provided with electric heater (2), the air deflector (12) has first microporous structure (122), the electric heater (2) includes flexible main body (21), connecting portion (22), the flexible main body (21) has second microporous structure (211), the flexible main body (21) covers the air deflector (12); The flexible main body (21) is one of the conductive fabric or the polymer porous membrane, the connecting portion (22) is located at both ends of the flexible main body (21), and the connecting portion (22) is connected with the power supply portion (4) through the connecting wire (3); The control method comprises the following steps: S1, in the air conditioning cooling mode, the zero wind feeling mode is started, and the air deflector (12) shields the air outlet (11); S2, real-time detection of indoor temperature T 内 , indoor humidity RH, air outlet temperature T of the air deflector (12) 出 ; S3, according to the indoor temperature, indoor humidity, determine the dew point temperature T LU ; 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 (2) is started; step S4 also includes: S41、when L 临 > the first preset value, the zero wind sensing air conditioner blows normally, and the electric heater (2) is in the closed state; S42, when the second preset value ≤ L 临 ≤ the first preset value, start the electric heater (2); S43, when L 临 <Second preset value, do not start the electric heater (2), increase the speed of the fan; Wherein: step S42 includes the following steps: S421、based on the voltage applied by the electric heater (2), obtain the heating temperature T on the electric heater (2) 发 ; S422, when T 发 ≥ T 出 + ΔT, reduce the voltage applied by the electric heater (2), and return to step S421. S423、when T 出 ≤ T 发 <T 出 + ΔT, the electric heater (2) runs at T 发 for a first preset time t 设 and returns to step S2. S424、when T 发 <T 出 , increase the voltage applied by the electric heater (2), and return to step S421.

2. The control method of the zero-sensitivity air conditioner according to claim 1, wherein The electric heater (2) is arranged on the inner side or the outer side of the air deflector (12).

3. The control method of the zero wind sensing air conditioner according to claim 1, wherein, The air deflector (12) is provided with a groove (121), and the connecting portion (22) is arranged in the groove (121), so that the flexible main body (21) is in close contact with the air deflector (12).

4. The control method of a zero-sensing air conditioner according to claim 1, wherein The pore size of the first microporous structure is larger than the pore size of the second microporous structure.

5. The control method of the zero wind sensing air conditioner according to claim 1, wherein, The air conditioner main body (1) includes a rotating shaft (13), and both ends of the rotating shaft (13) are movably connected to the air conditioner main body (1).

6. The control method of a zero-sensing air conditioner according to claim 1, wherein The electric heater (2) is detachably connected with the air deflector (12).

7. The control method of the zero wind sensing air conditioner according to claim 1, wherein The zero wind feeling air conditioner further comprises a control device, and the control device comprises the following: A first detection unit is used to detect the indoor temperature and the indoor humidity of the current indoor environment. A calculation unit is used to calculate the critical temperature difference of the current indoor environment according to the indoor temperature and the indoor humidity. A second detection unit is used to obtain the outlet temperature of the air deflector. A third detection unit is used to obtain the heating temperature of the electric heater according to the voltage applied to the electric heater. A control unit is used to control the electric heater according to the critical temperature difference. The control unit is further used to control the voltage applied to the electric heater according to the heating temperature of the electric heater and the outlet temperature of the air deflector.

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