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, the air conditioner body including an air outlet and a panel air outlet channel, the air outlet being connected to the panel air outlet channel, an air guide plate being disposed on the outer side of the air outlet, the air guide plate having a first microporous structure, a front panel being disposed on the outer side of the panel air outlet channel, the front panel having a second microporous structure, a first electric heater being disposed on the air guide plate, the first electric heater having a third microporous structure, and a second electric heater being disposed on the front panel, the second electric heater having a fourth microporous structure. This invention's air conditioner not only avoids direct cold air blowing on the user, improving the user experience; the secondary airflow dispersion of the air guide plate and the front panel enables the air conditioner to achieve a zero-wind-feel effect, improving the comfort of the air conditioner; simultaneously, the corresponding electric heater, by applying a certain voltage, can effectively prevent condensation and avoid large fluctuations in indoor temperature, further 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 conditioner body, which includes an air outlet and a panel air outlet channel. The air outlet is connected to the panel air outlet channel. An air guide plate is disposed on the outside of the air outlet, and the air guide plate has a first microporous structure. A front panel is disposed on the outside of the panel air outlet channel, and the front panel has a second microporous structure. A first electric heater is disposed on the air guide plate, and the first electric heater has a third microporous structure. A second electric heater is disposed on the front panel, and the second electric heater has a fourth microporous structure.

[0008] The air conditioner of this invention not only expels air through the air outlet but also through the air outlet channel on the panel, resulting in a large air outlet area. The upward airflow from the panel channel prevents cold air from blowing directly on the user, improving the user experience. The primary airflow dispersion via the microporous structure on the air guide plate, the secondary airflow dispersion via the microporous structure of the first electric heater, the primary airflow dispersion via the microporous structure on the front panel, and the secondary airflow dispersion via the microporous structure of the second electric heater all contribute to a zero-wind-feel effect, enhancing the comfort of the air conditioner. Simultaneously, the electric heater, by applying a certain voltage, appropriately increases the air outlet temperature, effectively preventing condensation and large fluctuations in indoor temperature, further improving user comfort.

[0009] Furthermore, the first electric heater is disposed on the inner or outer side of the air guide plate, and the second electric heater is disposed on the inner or outer side of the front panel, with the air guide plate disposed on the same side as the front panel.

[0010] Furthermore, a first groove is provided on the air guide plate, and the first electric heater includes a first flexible body and a first connecting part. The first flexible body is in close contact with the air outlet plate, and the first connecting part is disposed in the first groove. The first groove enables the first flexible body to be 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, a second groove is provided on the front panel, and the second electric heater includes a second flexible body and a second connecting part. The second flexible body is in close contact with the front panel, and the second connecting part is disposed in the second groove, so that the second flexible body is in close contact with the front panel.

[0013] This design allows the electric heater to provide heat to the front panel more quickly, thereby appropriately increasing the air outlet temperature of the panel's air outlet duct while ensuring the temperature difference fluctuation range, thus preventing condensation from forming on the front panel.

[0014] Furthermore, the pore size of the first microporous structure is larger than that of the third microporous structure, and the pore size of the second microporous structure is larger than that of the fourth microporous structure.

[0015] This setting can effectively disperse airflow and improve the zero-wind feeling effect.

[0016] Furthermore, the air conditioner body includes a rotating shaft, the two ends of which are movably connected to the air conditioner body.

[0017] A control method for a zero-wind-feel air conditioner, comprising the aforementioned zero-wind-feel air conditioner, wherein the anti-condensation control method for the air guide plate comprises the following steps:

[0018] S1. In air conditioning cooling mode, turn on zero-wind mode;

[0019] S2, Real-time monitoring of indoor temperature T 内 Indoor humidity (RH) and air outlet temperature (T) of the air guide plate 出 ;

[0020] S3. Determine the dew point temperature T based on the indoor temperature and humidity. LU ;

[0021] S4. Determine the dew point temperature T LU With T 出 The critical temperature difference L between them 临 To determine whether the first electric heater is started.

[0022] This setting not only improves human comfort in a zero-wind state, but also prevents condensation from forming on the air deflector.

[0023] Furthermore, step S4 also includes the following steps:

[0024] S41, when L 临 > First preset value: Zero-wind air conditioner blows air normally, electric heater is in the off state;

[0025] S42, When the second preset value ≤ L 临 If the value is less than or equal to the first preset value, start the first electric heater;

[0026] S43, when L 临 <Second preset value, the first electric heater is not activated, and the fan speed is increased.

[0027] 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.

[0028] Further, step S42 includes the following steps:

[0029] S421. Based on the voltage applied to the first electric heater, obtain the heating temperature T on the first electric heater. 发 ;

[0030] S422, when T 发 ≥T 出 When +ΔT, reduce the voltage applied by the first electric heater and return to step S421;

[0031] S423, when T 出 ≤T 发 <T 出At +ΔT, the first electric heater operates at T. 发 Run for the first preset time t 设 Then, return to step S2;

[0032] S424, when T 发 <T 出 Increase the voltage applied by the first electric heater and return to step S421.

[0033] This setting ensures normal airflow even in zero-wind conditions, while preventing condensation.

[0034] Furthermore, it also includes a control device, comprising the following:

[0035] The first detection unit is used to detect the current indoor temperature and humidity.

[0036] The calculation unit is used to calculate the current critical temperature difference in the room based on the indoor temperature and indoor humidity.

[0037] The second detection unit is used to obtain the air outlet temperature of the air guide plate and the air outlet temperature of the front panel.

[0038] The third detection unit is used to obtain the heating temperature of the first electric heater / second electric heater based on the voltage applied by the first electric heater / second electric heater;

[0039] A control unit is used to control the first electric heater / second electric heater according to the critical temperature difference;

[0040] The control unit is also used to control the voltage applied to the first electric heater according to the heating temperature of the first electric heater and the air outlet temperature of the air guide plate; and to control the voltage applied to the second electric heater according to the heating temperature of the second electric heater and the air outlet temperature of the front panel.

[0041] 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.

[0042] Compared with existing technologies, the zero-wind-feel air conditioner and its control method described in this invention have the following advantages:

[0043] 1) The air conditioner of the present invention not only vents air through the air outlet, but also through the air outlet channel on the panel, resulting in a large air outlet area. The air outlet channel on the panel draws air upward, avoiding direct cold air blowing on the user and improving the user experience. The micro-perforated structure on the air guide plate provides primary airflow dispersion, the micro-perforated structure of the first electric heater provides secondary airflow dispersion, and the micro-perforated structure on the front panel provides primary airflow dispersion and the micro-perforated structure of the second electric heater provides secondary airflow dispersion, enabling the air conditioner to achieve a zero-wind effect and improving the comfort of the air conditioner. At the same time, the electric heater applies a certain voltage to appropriately increase the air outlet temperature, which can effectively prevent condensation and avoid large fluctuations in indoor temperature, thus improving user comfort.

[0044] 2) By providing a groove on the air guide plate / front panel in this application, the main body of the electric heater can be in close contact with the air guide plate / front panel, so that when the electric heater is heating up, it can provide heat to the air guide plate / front panel more quickly. In this way, while ensuring the temperature difference fluctuation range, the outlet temperature of the air outlet / panel outlet channel can be appropriately increased, and condensation can be avoided on the air guide plate / front panel. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of the zero-wind-feel air conditioner of the present invention;

[0046] Figure 2 This is a schematic diagram of the air guide plate and electric heater structure of the present invention;

[0047] Figure 3 This is a schematic diagram of the front panel and electric heater structure of the present invention;

[0048] Figure 4 This is a schematic diagram of the connection structure between the first electric heater and the first power supply unit of the present invention;

[0049] Figure 5 This is a schematic diagram of the connection structure between the second electric heater and the second power supply unit of the present invention;

[0050] Figure 6 This is a partial flowchart of the control method for the zero-wind-feel air conditioner of the present invention. Figure 1 ;

[0051] Figure 7 This is a partial flowchart of the control method for the zero-wind-feel air conditioner of the present invention. Figure 2 .

[0052] Explanation of reference numerals in the attached figures:

[0053] 1-Air conditioner main body, 11-Air outlet, 12-Air guide plate, 121-First groove, 122-First microporous structure, 13-Rotating shaft, 14-Front panel, 141-Second groove, 142-Second microporous structure, 15-Panel air outlet channel, 2-First electric heater, 21-First flexible main body, 211-Third microporous structure, 22-First connecting part, 23-First connecting line, 24-First power supply part, 25-Roller, 3-Second electric heater, 31-Second flexible main body, 311-Fourth microporous structure, 32-Second connecting part, 33-Second connecting line, 34-Second power supply part. Detailed Implementation

[0054] 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.

[0055] Example 1

[0056] like Figure 1-7 As shown, the present invention provides a zero-wind-feel air conditioner, including an air conditioner body 1. The air conditioner body 1 includes an air outlet 11 and a panel air outlet channel 15. The air outlet 11 is connected to the panel air outlet channel 15. An air guide plate 12 is provided on the outside of the air outlet 11. The air guide plate 12 has a first micropore structure 122. A front panel 14 is provided on the outside of the panel air outlet channel 15. The front panel 14 has a second micropore structure 142. A first electric heater 2 is provided on the air guide plate 12. The first electric heater 2 has a third micropore structure 211. A second electric heater 3 is provided on the front panel 14. The second electric heater 3 has a fourth micropore structure 311.

[0057] The first electric heater 2 is detachably connected to the air guide plate 12, and the second heater 3 is detachably connected to the front panel 14.

[0058] This invention improves airflow in two zero-wind-feel modes and prevents condensation by incorporating electric heaters on the air guide plate and front panel. These heaters raise the temperature of the air guide plate / front panel, preventing condensation from forming on the air guide plate and reducing human comfort.

[0059] An electric heater 2 is installed on the air guide plate 12. The electric heater can increase the temperature of the air guide door, prevent condensation from forming on the air guide door, and reduce human comfort.

[0060] Specifically, one end of the first electric heater is connected to the positive terminal of the first power supply unit via a first connecting line, and the other end of the first electric heater is connected to the negative terminal of the first power supply unit via a first connecting line.

[0061] Specifically, the first electric heater is disposed on the inner or outer side of the air guide plate, and the second electric heater is disposed on the inner or outer side of the front panel, with the air guide plate disposed on the same side as the front panel.

[0062] The first electric heater / second electric heater of this application can be detachably installed on the inside or outside of the air guide plate / front panel, 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.

[0063] Specifically, the air guide plate is provided with a first groove, the first electric heater includes a first flexible body and a first connecting part, the first connecting part is located at both ends of the first flexible body, the first flexible body is in close contact with the air outlet plate, the first connecting part is disposed in the first groove, and the first groove makes the first flexible body in close contact with the air guide plate.

[0064] Specifically, a second groove is provided on the front panel, and the second electric heater includes a second flexible body and a second connecting part. The second connecting part is located at both ends of the second flexible body. The second flexible body is in close contact with the front panel, and the second connecting part is disposed in the second groove, so that the second flexible body is in close contact with the front panel.

[0065] The first / second flexible body in this application has a certain degree of conductivity, uniform conductivity, and its size must at least cover the air guide plate. Under a certain voltage, it can generate a continuous heating temperature on its surface, and this heating temperature is related to the size, resistance, voltage, and related properties of the flexible body. The flexible body can be an existing uniformly conductive conductive fabric, a porous polymer membrane, a metal mesh, etc.

[0066] 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.

[0067] The first connecting part / second 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.

[0068] 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.

[0069] Specifically, the pore size of the first microporous structure is larger than that of the third microporous structure, and the pore size of the second microporous structure is larger than that of the fourth microporous structure.

[0070] In the specific solution of this application, in order to make the air volume of the front panel uniform and to detect the air temperature of the front panel, the microporous structure of the front panel gradually increases from the lower right to the upper right.

[0071] 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.

[0072] This application provides a control method for a zero-wind-feel air conditioner. Using the aforementioned zero-wind-feel air conditioner, the anti-condensation control method for the air guide plate includes the following steps:

[0073] S1. In the air conditioning cooling mode, turn on the zero-wind mode; when the zero-wind mode is turned on, the air guide plate blocks the air outlet.

[0074] S2, Real-time monitoring of indoor temperature T 内 Indoor humidity (RH) and air outlet temperature (T) of the air guide plate 出 ;

[0075] S3. Determine the dew point temperature T based on the indoor temperature and humidity. LU ;

[0076] S4. Determine the dew point temperature T LU With T 出 The critical temperature difference L between them 临 To determine whether the first electric heater is started.

[0077] It should be noted that L 临 =T 出 -T LU 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.

[0078] Furthermore, step S4 also includes the following steps:

[0079] S41, when L 临 > First preset value: Zero-wind air conditioner blows air normally, electric heater is in the off state; indicating that there is no risk of condensation on the air guide plate, zero-wind air conditioner blows air normally, electric heater is in the off state.

[0080] The heating temperature T of the flexible body is obtained by providing a certain voltage V from the power supply unit. 发 ;

[0081] S42, When the second preset value ≤ L 临 If the value is less than or equal to the first preset value, start the first electric heater;

[0082] S43, when L 临 <Second preset value: The first electric heater is not activated, and the fan speed is increased; at this time, condensation has already formed on the air guide plate, and the electric heater is not activated. This setting prevents the condensation from having an unsafe impact on the electric heater. At this time, by increasing the speed of the air conditioner's fan, the condensation on the air guide plate evaporates quickly.

[0083] Specifically, step S42 includes the following steps:

[0084] S421. Based on the voltage applied to the first electric heater, obtain the heating temperature T on the first electric heater. 发 ;

[0085] S422, when T 发 ≥T 出 When +ΔT, reduce the voltage applied by the first electric heater and return to step S421;

[0086] S423, when T 出 ≤T 发 <T 出 At +ΔT, the first electric heater operates at T. 发 Run for the first preset time t 设 Then, return to step S2; preferably, the t 设 =20s~300s.

[0087] S424, when T 发 <T 出 Increase the voltage applied by the first electric heater and return to step S421.

[0088] 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.

[0089] In the technical solution of this application, T 发 The temperature is lower than the melting point of the conductive fabric, ensuring the fabric's effectiveness during heating by the electric heater. This is achieved by controlling T... 发 This not only prevents condensation from forming on the air deflector, but also avoids the impact of large temperature fluctuations on human comfort.

[0090] The anti-condensation control method on the front panel in this application is the same as the anti-condensation control method on the air guide plate. Both methods involve applying a certain voltage to the electric heater to give it a certain heating temperature, thereby avoiding the risk of condensation on the front panel and improving user comfort.

[0091] Specifically, it also includes a control device, including the following:

[0092] The first detection unit is used to detect the current indoor temperature and humidity.

[0093] The calculation unit is used to calculate the current critical temperature difference in the room based on the indoor temperature and indoor humidity.

[0094] The second detection unit is used to obtain the air outlet temperature of the air guide plate and the air outlet temperature of the front panel.

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

[0096] A control unit is used to control the first electric heater / second electric heater according to the critical temperature difference;

[0097] The control unit is also used to control the voltage applied to the first electric heater according to the heating temperature of the first electric heater and the air outlet temperature of the air guide plate; and to control the voltage applied to the second electric heater according to the heating temperature of the second electric heater and the air outlet temperature of the front panel.

[0098] 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.

[0099] 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.

[0100] 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) and a panel air outlet channel (15), the air outlet (11) is communicated with the panel air outlet channel (15), a deflector (12) is arranged outside the air outlet (11), the deflector (12) is provided with a first microporous structure (122), a front panel (14) is arranged outside the panel air outlet channel (15), the front panel (14) is provided with a second microporous structure (142), a first electric heater (2) is arranged on the deflector (12), the first electric heater (2) is provided with a third microporous structure (211), a second electric heater (3) is arranged on the front panel (14), the second electric heater (3) is provided with a fourth microporous structure (311); The first electric heater (2) comprises a first flexible main body (21), the second electric heater (3) comprises a second flexible main body (31), and the first flexible main body (21) and the second flexible main body (31) are one of conductive fabric and high polymer porous membrane. The control method comprises the following steps: S1, in the air conditioning cooling mode, the zero-wind-sensing mode is started, and the 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, determining whether to start the first electric heater (2) by judging the critical temperature difference L between the dew point temperature T LU and T 出 . 临 S4, determining whether to start the first electric heater (2) by judging the critical temperature difference L between the dew point temperature T LU and T 出 . 临 S4, determining whether to start the first electric heater (2) by judging the critical temperature difference L between the dew point temperature T LU 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 first electric heater (2); S43, when L 临 <Second preset value, do not start the first electric heater (2), increase the speed of the fan; Wherein: step S42 comprises the following steps: S421、based on the voltage applied by the first electric heater (2), obtain the heat generation temperature T on the first electric heater (2) 发 ; S422, when T 发 ≥ T 出 + ΔT, reduce the voltage applied by the first electric heater (2), and return to step S421; S423、when T 出 ≤ T 发 <T 出 + ΔT, the first 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 first electric heater (2) and return to step S421.

2. The control method of the zero-sensitivity air conditioner according to claim 1, wherein The first electric heater (2) is arranged on the inner side or the outer side of the deflector (12), the second electric heater (3) is arranged on the inner side or the outer side of the front panel (14), and the deflector (12) and the front panel (14) are arranged on the same side.

3. The control method of the zero wind sensing air conditioner according to claim 1, wherein, The deflector (12) is provided with a first groove (121), the first electric heater (2) further comprises a first connecting part (22), the first flexible main body (21) is in close contact with the deflector (12), and the first connecting part (22) is arranged in the first groove (121), so that the first flexible main body (21) is in close contact with the deflector (12).

4. The control method of the zero sensing air conditioner according to claim 1, wherein The front panel (14) is provided with a second groove (141), the second electric heater (3) further comprises a second connecting part (32), the second flexible main body (31) is in close contact with the front panel (14), and the second connecting part (32) is arranged in the second groove (141), so that the second flexible main body (31) is in close contact with the front panel (14).

5. 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 that of the third microporous structure (211), and the pore diameter of the second microporous structure (142) is greater than that of the fourth microporous structure (311).

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

7. The control method according to claim 1, characterized by, The zero-wind-sensing air conditioner further comprises a control device, and the control device comprises the following: A first detection unit is arranged for detecting the indoor temperature and the indoor humidity of the current indoor environment; A calculation unit is arranged for calculating the critical temperature difference of the current indoor environment according to the indoor temperature and the indoor humidity. The second detection unit is configured to acquire the outlet temperature of the air deflector and the outlet temperature of the front panel; The third detection unit is configured to acquire the heating temperature of the first / second electric heater according to the voltage applied to the first / second electric heater; The control unit is configured to control the first / second electric heater according to the critical temperature difference; The control unit is further configured to control the voltage applied to the first electric heater according to the heating temperature of the first electric heater and the outlet temperature of the air deflector, and to control the voltage applied to the second electric heater according to the heating temperature of the second electric heater and the outlet temperature of the front panel.

Images