Fresh air air conditioner indoor unit, fresh air air conditioner and control method thereof

Abstract

The present application relates to a fresh air air conditioner indoor unit, a fresh air air conditioner, and a control method thereof. The fresh air air conditioner indoor unit comprises: a housing having a fresh air cavity, the housing being provided with a first air exchange port and a second air exchange port communicating with the fresh air cavity; a fresh air module located in the fresh air cavity, the fresh air module being configured to exchange air between an internal environment and an external environment through the first air exchange port and the second air exchange port; wherein the second air exchange port comprises at least a first fresh air outlet and a second fresh air outlet. In a fresh air mode, the fresh air module is activated, and at least one of the first fresh air outlet and the second fresh air outlet discharges air to the internal environment. The air volume discharged from the first fresh air outlet and the second fresh air outlet to the internal environment can be adjusted according to the temperature difference between the internal environment. The fresh air air conditioner indoor unit, the fresh air air conditioner, and the control method thereof can achieve different fresh air discharge modes as required, meeting the demand for large air volume while reducing the noise generated by high wind speeds and large air volumes.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a fresh air air conditioning indoor unit, a fresh air air conditioning and a control method thereof. Background Art

[0002] With the improvement of living standards, fresh air air conditioners with fresh air functions have become a major development trend in future air conditioners. More and more air conditioners are adding fresh air functions and undergoing upgrades based on this feature. Existing fresh air air conditioners have a relatively concentrated fresh air output, a single direction, a single air output mode, and high wind speeds. The maximum air volume cannot meet user needs, and when adjusted to a higher air volume, it generates loud noise, resulting in a poor user experience. Summary of the Invention

[0003] The purpose of this application is to provide a fresh air air conditioner indoor unit, a fresh air air conditioner and a control method thereof, which can realize different modes of fresh air outlet according to needs, meet the demand for large air output, and reduce the noise generated at high wind speed and large air volume.

[0004] To this end, in a first aspect, an embodiment of the present application provides a fresh air air conditioner indoor unit, comprising:

[0005] The housing has a fresh air cavity, and the housing is provided with a first air exchange port and a second air exchange port communicating with the fresh air cavity, wherein the first air exchange port is used to communicate with the external environment, and the second air exchange port is used to communicate with the internal environment;

[0006] A fresh air module, located in the fresh air cavity, for allowing air to be exchanged between the internal environment and the external environment through the first air exchange port and the second air exchange port;

[0007] Among them, the second air exchange outlet includes at least a first fresh air outlet and a second fresh air outlet. In the fresh air mode, the fresh air module is started, and at least one of the first fresh air outlet and the second fresh air outlet discharges air to the internal environment, and the air outlet volume of the first fresh air outlet and the second fresh air outlet to the internal environment can be adjusted according to the temperature difference of the internal environment.

[0008] In a possible implementation, the first fresh air outlet and the second fresh air outlet have different directions, the opening of the first fresh air outlet faces the internal environment, and the opening of the second fresh air outlet faces the air inlet side of the heat exchanger of the fresh air air conditioner indoor unit.

[0009] When the fresh air volume of the fresh air mode is set to the first air volume, the fresh air module is started, and the first fresh air outlet and the second fresh air outlet both discharge air to the internal environment and the air volume is the maximum air volume. When it is detected that the temperature difference of the internal environment is greater than the preset temperature difference, the air volume of the first fresh air outlet is reduced, and the air volume of the second fresh air outlet remains unchanged.

[0010] In a possible implementation, the preset temperature difference is between 1°C and 3°C.

[0011] In a possible implementation, the fresh air volume of the fresh air mode has a second air volume, and the second air volume is smaller than the first air volume. When the fresh air volume of the fresh air mode is set to the second air volume, the fresh air module is started, and at least one of the first fresh air outlet and the second fresh air outlet discharges air. When it is detected that the temperature difference of the internal environment is greater than the preset temperature difference, it is detected whether the first fresh air outlet discharges air. If so, it is adjusted so that the second fresh air outlet discharges air and the first fresh air outlet does not discharge air; otherwise,

[0012] Enhance the heat exchange capacity of the indoor unit of the fresh air air conditioner and reduce the operating speed of the fresh air module, and detect the temperature difference change in the internal environment after a preset time interval. If the detected temperature difference change is greater than the preset temperature difference, continue to enhance the heat exchange capacity of the fresh air air conditioner and reduce the operating speed of the fresh air module until the temperature difference change in the internal environment is detected to be less than the preset temperature difference after the preset time interval.

[0013] In a possible implementation, the preset time is 5 minutes.

[0014] In a possible implementation, it also includes a first damper and a second damper, the first damper is rotatably connected to the first fresh air outlet, and the second damper is rotatably connected to the second fresh air outlet. In an initial state, the first damper blocks the first fresh air outlet, and the second damper blocks the second fresh air outlet. When the first damper and the second damper are opened from the initial state to allow air to flow out of the first fresh air outlet and the second fresh air outlet, the first damper can rotate relative to the first fresh air outlet, and the second damper can rotate relative to the second fresh air outlet.

[0015] In a possible implementation, when the first fresh air outlet is at a maximum air flow rate, the angle of the second damper relative to the initial state is a first angle;

[0016] In the fresh air mode with the fresh air volume being the first air volume, when the detected temperature difference of the internal environment is greater than the preset temperature difference N°C, the opening angle of the second damper is reduced by a first angle of 1 / N for every 1°C decrease in the temperature difference.

[0017] In a possible implementation, the invention further includes a fresh air duct connected to the first air exchange port, wherein the fresh air duct includes a first layer, a second layer, and a third layer connected from the inside to the outside;

[0018] The first layer is a hose, the second layer is a skeleton spirally wound around the hose, and the third layer is a detachably connected insulation layer.

[0019] In a possible implementation, the thermal insulation layer is a thermal insulation sponge, and the thermal insulation sponge is provided with a plurality of spaced-apart cuts along the extension direction of the fresh air duct.

[0020] In a second aspect, an embodiment of the present application further provides a fresh air air conditioner, comprising a connected fresh air air conditioner outdoor unit and a fresh air air conditioner indoor unit, wherein the fresh air air conditioner indoor unit is the fresh air air conditioner indoor unit described above.

[0021] In a third aspect, an embodiment of the present application further provides a control method for a fresh air air conditioner, wherein the fresh air air conditioner includes a fresh air air conditioner indoor unit, and the fresh air air conditioner indoor unit includes:

[0022] The housing has a fresh air cavity, and the housing is provided with a first air exchange port and a second air exchange port communicating with the fresh air cavity, wherein the first air exchange port is used to communicate with the external environment, and the second air exchange port is used to communicate with the internal environment;

[0023] A fresh air module, located in the fresh air cavity, for allowing air to be exchanged between the internal environment and the external environment through the first air exchange port and the second air exchange port;

[0024] Wherein, the second air exchange outlet includes at least a first fresh air outlet and a second fresh air outlet, and the control method includes:

[0025] The fresh air mode is turned on, the fresh air module is started, and at least one of the first fresh air outlet and the second fresh air outlet is controlled to discharge air to the internal environment, and the air outlet volume of the first fresh air outlet and the second fresh air outlet to the internal environment is adjusted according to the temperature difference of the internal environment.

[0026] In one possible implementation, the first fresh air outlet and the second fresh air outlet have different orientations, the first fresh air outlet opens toward the internal environment, and the second fresh air outlet opens toward an air inlet side of a heat exchanger of an indoor unit of the fresh air air conditioner. The control method includes:

[0027] Set the fresh air volume of the fresh air mode to the first air volume, start the fresh air module, control the first fresh air outlet and the second fresh air outlet to discharge air to the internal environment and the air volume is the maximum air volume. When it is detected that the temperature difference of the internal environment is greater than the preset temperature difference, the air volume of the first fresh air outlet is reduced, and the air volume of the second fresh air outlet remains unchanged.

[0028] In one possible implementation, the control method includes:

[0029] The fresh air volume of the fresh air mode is set to a second air volume, which is smaller than the first air volume, and the fresh air module is started to control at least one of the first fresh air outlet and the second fresh air outlet to discharge air. When it is detected that the temperature difference of the internal environment is greater than the preset temperature difference, it is detected whether the first fresh air outlet is discharging air. If so, it is adjusted to the second fresh air outlet to discharge air and the first fresh air outlet is not discharging air; otherwise,

[0030] Enhance the heat exchange capacity of the fresh air air conditioner indoor unit and reduce the operating speed of the fresh air module, and detect the temperature difference change in the internal environment after a preset time interval. If the detected temperature difference change is greater than the preset temperature difference, continue to enhance the heat exchange capacity of the fresh air air conditioner indoor unit and reduce the operating speed of the fresh air module until the temperature difference change in the internal environment is detected to be less than the preset temperature difference after the preset time interval.

[0031] According to the embodiments of the present application, the fresh air air conditioner indoor unit, fresh air air conditioner, and control method thereof are provided. By configuring the air exchange vents located in the internal environment as at least two first fresh air outlets and a second fresh air outlet, fresh air can enter the internal environment in a more dispersed manner, reducing the air outlet velocity. Even when the air outlet volume is large, noise is not generated. Furthermore, by utilizing the detected temperature difference in the internal environment to adjust the air outlet modes, such as opening and closing, and the opening size, of the first and second fresh air outlets, the air outlet volume can be increased to meet higher user needs. The air outlet mode can also be adjusted automatically, ensuring that the fresh air function is effectively implemented without causing excessive temperature differences in the internal environment, thereby ensuring a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In addition, in the drawings, the same reference numerals are used for the same components, and the drawings are not drawn according to the actual scale.

[0033] Figure 1A schematic structural diagram of a fresh air air conditioner indoor unit provided in an embodiment of the present application is shown;

[0034] Figure 2 An exploded view of a fresh air air conditioner indoor unit provided in an embodiment of the present application is shown;

[0035] Figure 3 A front view of a fresh air air conditioner indoor unit provided by an embodiment of the present application with the air door in a closed state is shown;

[0036] Figure 4 A front view of a fresh air air conditioner indoor unit provided by an embodiment of the present application with the air door in an open state is shown;

[0037] Figure 5 A cross-sectional front view of a fresh air duct in a fresh air air conditioner indoor unit provided by an embodiment of the present application is shown;

[0038] Figure 6 A flow chart of a control method for a fresh air air conditioner provided in an embodiment of the present application is shown.

[0039] Reference numerals:

[0040] 1-shell; 11-fresh air chamber; 12-first air exchange port; 13-second air exchange port; 131-first fresh air outlet; 132-second fresh air outlet; 14-wind shield; 15-first damper; 16-second damper; 2-fresh air module; 21-fan blade; 3-fresh air duct; 31-first layer; 32-second layer; 33-third layer; 331-incision. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] Figure 1 A structural schematic diagram of a fresh air air conditioner indoor unit provided in an embodiment of the present application is shown. Figure 2 An exploded view of a fresh air air conditioner indoor unit provided in an embodiment of the present application is shown.

[0043] The embodiment of the present application provides a fresh air air conditioner, which is a split-type air conditioner with a fresh air function and can be used in closed spaces such as indoor spaces. The fresh air air conditioner includes a connected fresh air air conditioner indoor unit and a fresh air air conditioner outdoor unit. The fresh air air conditioner outdoor unit is set in the external environment, and the fresh air air conditioner indoor unit is set in the internal environment. The fresh air air conditioner indoor unit is provided with a heat exchanger, and the fresh air air conditioner outdoor unit is also provided with a heat exchanger and a compressor. In different modes, one of the two heat exchangers can be used as an evaporator and the other can be used as a condenser. The compressor and the two heat exchangers are connected in series through a circulation pipeline to form a closed loop for realizing indoor and outdoor heat exchange. The fresh air air conditioner can be understood as adding a fresh air system to the original air conditioner to realize the fresh air function, while the original structure and working principle of the air conditioner remain unchanged and will not be described in detail here.

[0044] See also Figure 1 and Figure 2 The embodiment of the present application provides a fresh air air conditioner indoor unit for the fresh air air conditioner described above. The fresh air air conditioner indoor unit comprises a housing 1 having a fresh air cavity 11. The housing 1 is provided with a first air exchange port 12 and a second air exchange port 13 communicating with the fresh air cavity 11. The first air exchange port 12 is used to communicate with the external environment, and the second air exchange port 13 is used to communicate with the internal environment. A fresh air module 2 is located in the fresh air cavity 11. The fresh air module 2 is used to exchange air between the internal environment and the external environment through the first air exchange port 12 and the second air exchange port 13. The second air exchange port 13 includes at least a first fresh air outlet 131 and a second fresh air outlet 132. In the fresh air mode, the fresh air module 2 is activated, and at least one of the first fresh air outlet 131 and the second fresh air outlet 132 discharges air to the internal environment. The air volume of the first fresh air outlet 131 and the second fresh air outlet 132 to the internal environment can be adjusted according to the temperature difference of the internal environment. By providing the air exchange vents located in the internal environment with at least two, first fresh air outlets 131 and second fresh air outlets 132, fresh air can enter the internal environment in a more dispersed manner, reducing the air outlet velocity. Even when the air outlet volume is high, noise is not generated. Furthermore, by utilizing the detected temperature difference in the internal environment to adjust the air outlet modes, such as the opening and closing, and the opening size of the first and second fresh air outlets 131, 132, this increases the air outlet volume to meet higher user needs. The air outlet mode can also be adjusted automatically, ensuring that the fresh air function is effectively implemented without causing excessive temperature differences in the internal environment, thus ensuring a better user experience.

[0045] It should be emphasized here that the fresh air module 2 is a component in the existing technology that can realize the fresh air function. The speed of the motor in the fresh air module 2 can affect the air exchange rate of the internal and external environments, which will not be described in detail here.

[0046] Optionally, the first air exchange port 12 is movably connected to a windshield 14. When the fresh air mode is not enabled, the windshield 14 blocks the first air exchange port 12 to prevent wind or other foreign matter from the external environment from entering the housing 1 and damaging internal components. When the fresh air mode is enabled, the windshield 14 can move relative to the first air exchange port 12 to open the first air exchange port 12, thereby enabling the first air exchange port 12 and the second air exchange port 13 to achieve air exchange between the internal and external environments.

[0047] It can be understood that, for the wind shield 14 provided, the wind shield 14 can move along the extension direction of the first air exchange port 12 to block or open the first air exchange port 12, or the wind shield 14 is rotatably connected to the side wall corresponding to the first air exchange port 12 to open or block the first air exchange port 12 by rotating the wind shield 14, or it can also be other cooperating structures that can realize the opening or closing of the first air exchange port 12, which is not specifically limited here.

[0048] Optionally, the fresh air air conditioner indoor unit is equipped with a temperature sensor for detecting changes in the temperature difference of the internal environment. The temperature difference refers to the difference between the internal environment temperature detected when the fresh air mode is turned on and the internal environment temperature at a certain time during the operation of the fresh air mode. As the fresh air mode is operated, as fresh air from the external environment mixes into the internal environment, the temperature difference of the internal environment changes with the change of the operation time. The temperature sensor can detect the temperature difference of the internal environment in real time and adaptively adjust the air volume of the first fresh air outlet 131 and the second fresh air outlet 132 accordingly to achieve the adjustment of different air outlet modes, thereby avoiding abrupt changes in the internal environment in the fresh air mode, which may lead to a poor user experience.

[0049] Optionally, the first fresh air outlet 131 and the second fresh air outlet 132 have different orientations, and the second air exchange outlet 13 may further include a third fresh air outlet, a fourth fresh air outlet, etc., which have different orientations from the first fresh air outlet 131 and the second fresh air outlet 132. This allows the fresh air blown into the interior environment to be distributed and directed from different directions, thereby reducing the outlet air velocity, avoiding noise generated when discharging large amounts of air, and improving the user experience. The following detailed description of the fresh air air conditioner indoor unit in the embodiment of the present application is provided using the example of a first fresh air outlet 131 and a second fresh air outlet 132 with two different orientations.

[0050] See also Figure 2The shell 1 is configured as a volute structure, including a detachably connected volute and a volute cover, to facilitate the installation of the fresh air module 2. The fresh air module 2 includes a fan blade 21. Along the circumferential direction of rotation of the fan blade 21, the first air exchange port 12, the first fresh air outlet 131 and the second fresh air outlet 132 are dispersedly arranged at corresponding positions of the shell 1, and the outlet side walls corresponding to the first air exchange port 12, the first fresh air outlet 131 and the second fresh air outlet 132 are spirally arranged in a blade-like manner, and it is sufficient to ensure that the directions of the first fresh air outlet 131 and the second fresh air outlet 132 are different. No specific limitation is made here.

[0051] In an optional embodiment, the opening of the first fresh air outlet 131 faces the internal environment, and the opening of the second fresh air outlet 132 faces the air inlet side of the heat exchanger of the fresh air air conditioner indoor unit. The first fresh air outlet 131 is used to directly exchange air with the internal environment, and the second fresh air outlet 132 can exchange air with the internal environment indirectly after heat exchange with the heat exchanger. When the exhaust function of the fresh air mode is turned on, the first fresh air outlet 12 and the second fresh air outlet 13 are opened, wherein at least one of the first fresh air outlet 131 and the second fresh air outlet 132 can be selected to be opened in the second air outlet 13. The stale air from the internal environment enters through the first fresh air outlet 131 and / or the second fresh air outlet 132 and is discharged to the external environment through the fan blades 21 of the fresh air module 2 and the first fresh air outlet 12. The provision of the first fresh air outlet 131 and the second fresh air outlet 132 can increase the area of ​​air intake from the internal environment when exhausting air outward. When the fresh air function in fresh air mode is enabled, fresh air from the external environment enters through the first air exchange port 12 under the action of the fan blades 21 of the fresh air module 2, and enters the internal environment through at least one of the first fresh air outlet 131 and the second fresh air outlet 132, thereby increasing the air intake area for fresh air exchange into the room. The following describes the implementation of the fresh air function in detail as an example.

[0052] Among them, when the fresh air volume of the fresh air mode is set to the first air volume, the fresh air module 2 is started, and the first fresh air outlet 131 and the second fresh air outlet 132 both discharge air to the internal environment at the maximum air volume. When it is detected that the temperature difference of the internal environment is greater than the preset temperature difference, the air volume of the first fresh air outlet 131 is reduced, and the air volume of the second fresh air outlet 132 remains unchanged. The first air volume is a high air volume when the high air volume is high. The size of the air volume of the first fresh air outlet 131 and the second fresh air outlet 132 can be automatically adjusted by setting the preset temperature difference. When the temperature difference changes greatly, the air volume of the first fresh air outlet 131 is reduced or even closed to reduce the direct blowing of wind into the internal environment. The air volume of the second fresh air outlet 132 remains unchanged, and while indirectly entering the internal environment, it can achieve heat exchange with the air inlet side of the heat exchanger on the side.

[0053] Optionally, the fresh air volume of the fresh air mode has a second air volume, which is smaller than the first air volume. When the fresh air volume of the fresh air mode is set to the second air volume, the fresh air module 2 is started, and at least one of the first fresh air outlet 131 and the second fresh air outlet 132 discharges air. When it is detected that the temperature difference change of the internal environment is greater than the preset temperature difference, whether the first fresh air outlet 131 is discharging air is detected. If so, it is adjusted to the second fresh air outlet 132 to discharge air and the first fresh air outlet 131 not to discharge air; otherwise, the heat exchange capacity of the fresh air air conditioner indoor unit is enhanced and the operating speed of the fresh air module 2 is reduced, and the temperature difference change in the internal environment is detected after a preset time interval. If the detected temperature difference change is greater than the preset temperature difference, the heat exchange capacity of the fresh air air conditioner is continued to be enhanced and the operating speed of the fresh air module 2 is reduced until the temperature difference change in the internal environment is detected to be less than the preset temperature difference after a preset time interval.

[0054] The second air volume is a medium-low air volume when it is at a medium-low level. When the user selects the medium-low level fresh air mode, he or she can also select one of the fresh air outlets to discharge air. During operation, the temperature difference of the internal environment is obtained in real time. When the temperature difference is greater than the preset temperature difference, in order to avoid a sudden change in temperature, it is determined which fresh air outlet is currently discharging air. If it is the first fresh air outlet 131, this outlet directly directs the fresh air to the internal environment, and the air volume is large, then it is necessary to switch to the second fresh air outlet 132 to indirectly discharge air, thereby reducing the air volume. When it is detected that the internal environment temperature changes sharply when only the second fresh air outlet 132 is discharging air, it is necessary to control and strengthen the heat exchange capacity of the fresh air air conditioner and the speed of the fresh air module 2 to reduce the rate of air discharge from the second fresh air outlet 132 and increase the rate of heat exchange, thereby controlling the air volume, wind speed and outlet temperature of the second fresh air outlet 132 entering the internal environment to ensure that the temperature difference of the internal environment is within the preset temperature.

[0055] Optionally, the preset temperature difference is between 1°C and 3°C to avoid excessive temperature changes affecting the user experience in the internal environment.

[0056] Optionally, the preset time is 5 minutes. Testing is performed at appropriate time intervals to improve the accuracy of the test and ensure the stability of the control operation.

[0057] In an alternative embodiment, see Figure 3 and Figure 4, further comprising a first damper 15 and a second damper 16, the first damper 15 being rotatably connected to the first fresh air outlet 131, and the second damper 16 being rotatably connected to the second fresh air outlet 132. In an initial state, the first damper 15 blocks the first fresh air outlet 131, and the second damper 16 blocks the second fresh air outlet 132. When the first damper 15 and the second damper 16 are opened from the initial state to allow the first fresh air outlet 131 and the second fresh air outlet 132 to discharge air, the first damper 15 can rotate relative to the first fresh air outlet 131, and the second damper 16 can rotate relative to the second fresh air outlet 132. By setting the first damper 15 and the second damper 16 rotatably connected, different air outlet modes can be selected according to demand, so that the first fresh air outlet 131 and the second fresh air outlet 132 can be selectively opened or closed, and the air volume when opened can be adjusted corresponding to the rotation angle of the damper relative to the initial state, thereby meeting the demand for air outlet modes with different air volumes.

[0058] Optionally, when the first fresh air outlet 131 is at its maximum airflow rate, the angle of the second damper 16 relative to the initial state is a first angle. In the fresh air mode with the first fresh air volume, when the detected internal ambient temperature difference is greater than a preset temperature difference N°C, the opening angle of the second damper 16 decreases by 1 / N of the first angle for each 1°C decrease in the temperature difference. This approach allows for more accurate control of temperature differences without the need for repeated adjustment of the damper opening angle.

[0059] In an alternative embodiment, see Figure 6 , further comprising a fresh air duct 3 connected to the first air exchange port 12. This duct 3 comprises a first layer 31, a second layer 32, and a third layer 33, which are connected from the inside out. The first layer 31 is a flexible tube, the second layer 32 is a frame spirally wrapped around the tube, and the third layer 33 is a detachable insulation layer. This three-layer design ensures the strength of the fresh air duct 3 while reducing its wall thickness and maximizing its diameter, thereby increasing the air exchange rate.

[0060] Optionally, the insulation layer is a thermal insulation sponge, and the thermal insulation sponge is provided with a plurality of spaced-apart cutouts 331 along the extension direction of the fresh air duct 3. The cutouts 331 allow the thermal insulation sponge to be partially removed at different locations at will. When the fresh air duct 3 is extended through the wall to the outside environment, the thermal insulation sponge of the fresh air duct 3 passing through the wall is removed. This allows for a greater air intake without increasing the diameter of the wall penetration hole, reduces costs, improves the aesthetics of the installation, and satisfies the anti-condensation and thermal insulation functions.

[0061] It is understandable that the incisions 331 can be arranged at equal intervals or unequal intervals, and the shape, size, etc. of the incisions can be adaptively adjusted according to needs, and are not specifically limited here.

[0062] Optionally, the hose is smooth, flexible PVC.

[0063] The embodiment of the present application also provides a fresh air air conditioner, including a fresh air air conditioner outdoor unit and the fresh air air conditioner indoor unit described above, which will not be described in detail here.

[0064] Based on the above-mentioned fresh air air conditioner, the embodiment of the present application further provides a control method for the fresh air air conditioner, including:

[0065] Turn on the fresh air mode, start the fresh air module, control at least one of the first fresh air outlet and the second fresh air outlet to discharge air to the internal environment, and adjust the air outlet volume of the first fresh air outlet and the second fresh air outlet to the internal environment according to the temperature difference of the internal environment.

[0066] By using the detected temperature difference changes in the internal environment to adjust the opening and closing, as well as the opening size and other air outlet methods of the first and second fresh air outlets, the air volume can be increased to meet higher user needs. At the same time, the air outlet mode can be adjusted automatically to ensure that the fresh air function is better realized without causing excessive changes in the internal environment temperature difference, reducing the wind speed and the noise generated by the air outlet when the air volume is large, and ensuring a better user experience.

[0067] In an optional embodiment, when implementing the fresh air function, the control method includes:

[0068] Set the fresh air volume of the fresh air mode to the first air volume, start the fresh air module, control the first fresh air outlet and the second fresh air outlet to discharge air to the internal environment and the air volume is the maximum air volume. When it is detected that the temperature difference of the internal environment is greater than the preset temperature difference, the air volume of the first fresh air outlet is reduced, and the air volume of the second fresh air outlet remains unchanged.

[0069] The fresh air volume of the fresh air mode is set to a second volume, which is smaller than the first volume. The fresh air module is activated to control at least one of the first and second fresh air outlets to discharge air. When it is detected that the temperature difference of the internal environment is greater than a preset temperature difference, the first fresh air outlet is detected to be discharging air. If so, the second fresh air outlet is adjusted to discharge air and the first fresh air outlet is not discharging air. Otherwise, the heat exchange capacity of the fresh air air conditioner indoor unit is enhanced and the speed of the fresh air module is reduced. After a preset time interval, the temperature difference in the internal environment is detected. If the detected temperature difference is greater than the preset temperature difference, the heat exchange capacity of the fresh air air conditioner indoor unit is further enhanced and the speed of the fresh air module is reduced until the temperature difference in the internal environment is less than the preset temperature difference after the preset time interval. This is used to select the appropriate air outlet mode according to different situations, thereby avoiding sudden changes in the internal environment temperature, ensuring a good fresh air function, and providing a good user experience.

[0070] Optionally, the fresh air mode of the air conditioner has different gears, such as high, medium, and low. The first air volume is the air volume when the user selects high, and the second air volume is the air volume when the user selects medium or low. It will not be emphasized separately later.

[0071] The following describes in detail a method for controlling a fresh air air conditioner installed indoors by taking an example in which a first air damper 15 is provided at a first fresh air outlet and a second air damper 16 is provided at a second fresh air outlet.

[0072] Set the indoor air quality index threshold to Q, the indoor temperature difference change to △T, and the preset temperature difference to X.

[0073] See also Figure 6 The user controls the air conditioner start-up command to turn on the air conditioner, sets the fresh air on mode, and selects the gear of the fresh air mode. If the fresh air speed is high, damper 1 (corresponding to the first damper) and damper 2 (corresponding to the second damper) are opened to allow the fresh air to enter the room after diversion, and the air outlet noise can be reduced. During this process, the temperature difference in the room is detected in real time. If the real-time temperature difference △T>X, damper 1 closes angle a (the size of the closed angle a can be adjusted with reference to the above embodiment) and damper 2 is fully opened to increase the amount of outdoor fresh air entering the room from the second fresh air outlet, so that more outdoor fresh air participates in the air exchange of the air conditioner and reduces the temperature difference. Otherwise, the existing air outlet mode remains unchanged. If the selected gear is medium or low, that is, it is not the fresh air speed high gear, the user sets the fresh air outlet opening mode (that is, the user chooses to open the first fresh air outlet or the second fresh air outlet), and the fresh air blown out of the first fresh air outlet is straight forward. This allows users to more intuitively experience the existence of the fresh air function. The fresh air blown out of the second fresh air outlet can participate in the heat exchange of the air conditioner and optimize the temperature distribution of the indoor space. When a certain fresh air outlet is turned on and running, the indoor temperature difference changes are detected in real time. If the real-time temperature difference △T>X, the air conditioner program detects whether damper 1 is open. If so, damper 1 is replaced by damper 2 to open. Otherwise, the heat exchange capacity of the air conditioner is gradually enhanced, and the speed of the fresh air fan is reduced by Yr / min (the △T is determined every 5 consecutive minutes. If the temperature difference △T>X within 5 consecutive minutes, the fresh air speed continues to decrease by Yr / min and the heat exchange capacity is gradually enhanced) until the temperature difference △T≤X; if the real-time temperature difference △T detected by the air conditioner is ≤X after the fresh air function is turned on, the set air outlet mode is maintained unchanged.

[0074] It should be emphasized that the above-mentioned control method of fresh air air conditioning can be applied to the fresh air air conditioning indoor unit of a split air conditioner with fresh air function, and can also be applied to other air conditioning units with fresh air function, without specific limitation here.

[0075] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0076] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0077] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fresh air air conditioner indoor unit, characterized in that: include: The housing has a fresh air cavity, and the housing is provided with a first air exchange port and a second air exchange port communicating with the fresh air cavity, wherein the first air exchange port is used to communicate with the external environment, and the second air exchange port is used to communicate with the internal environment; A fresh air module, located in the fresh air cavity, for allowing air to be exchanged between the internal environment and the external environment through the first air exchange port and the second air exchange port; The second air exchange outlet includes at least a first fresh air outlet and a second fresh air outlet. In the fresh air mode, the fresh air module is activated, and at least one of the first fresh air outlet and the second fresh air outlet discharges air to the internal environment, and the air volume discharged by the first fresh air outlet and the second fresh air outlet to the internal environment can be adjusted according to the temperature difference of the internal environment. The first fresh air outlet and the second fresh air outlet have different directions. The opening of the first fresh air outlet faces the internal environment, and the opening of the second fresh air outlet faces the air inlet side of the heat exchanger of the fresh air air conditioner indoor unit. When the fresh air volume of the fresh air mode is set to the first air volume, the fresh air module is started, and the first fresh air outlet and the second fresh air outlet both discharge air to the internal environment at a maximum air volume. When it is detected that the temperature difference of the internal environment is greater than the preset temperature difference, the air volume of the first fresh air outlet is reduced, and the air volume of the second fresh air outlet remains unchanged; The fresh air volume of the fresh air mode has a second air volume, which is smaller than the first air volume. When the fresh air volume of the fresh air mode is set to the second air volume, the fresh air module is started, and at least one of the first fresh air outlet and the second fresh air outlet discharges air. When it is detected that the temperature difference of the internal environment is greater than the preset temperature difference, it is detected whether the first fresh air outlet discharges air. If so, it is adjusted so that the second fresh air outlet discharges air and the first fresh air outlet does not discharge air; otherwise, Enhance the heat exchange capacity of the indoor unit of the fresh air air conditioner and reduce the operating speed of the fresh air module, and detect the temperature difference change in the internal environment after a preset time interval. If the detected temperature difference change is greater than the preset temperature difference, continue to enhance the heat exchange capacity of the fresh air air conditioner and reduce the operating speed of the fresh air module until the temperature difference change in the internal environment is detected to be less than the preset temperature difference after the preset time interval.

2. The fresh air air conditioner indoor unit according to claim 1, characterized in that: The preset temperature difference is between 1°C and 3°C.

3. The fresh air air conditioner indoor unit according to claim 1, characterized in that: The preset time is 5 minutes.

4. The fresh air air conditioner indoor unit according to claim 1, characterized in that: It also includes a first damper and a second damper, the first damper is rotatably connected to the first fresh air outlet, and the second damper is rotatably connected to the second fresh air outlet. In an initial state, the first damper blocks the first fresh air outlet, and the second damper blocks the second fresh air outlet. When the first damper and the second damper are opened from the initial state to allow air to flow out of the first fresh air outlet and the second fresh air outlet, the first damper can rotate relative to the first fresh air outlet, and the second damper can rotate relative to the second fresh air outlet.

5. The fresh air air conditioner indoor unit according to claim 4, characterized in that: When the first fresh air outlet is at a maximum air flow rate, the angle formed by the second damper relative to the initial state is a first angle; In the fresh air mode with the fresh air volume being the first air volume, when the detected temperature difference of the internal environment is greater than the preset temperature difference N°C, the opening angle of the second damper is reduced by a first angle of 1 / N for every 1°C decrease in the temperature difference.

6. The fresh air air conditioner indoor unit according to claim 1, characterized in that: Also included is a fresh air duct connected to the first air exchange port, the fresh air duct including a first layer, a second layer and a third layer connected from the inside to the outside; The first layer is a hose, the second layer is a skeleton spirally wound around the hose, and the third layer is a detachably connected insulation layer.

7. The fresh air air conditioner indoor unit according to claim 6, characterized in that: The thermal insulation layer is a thermal insulation sponge, and along the extension direction of the fresh air duct, the thermal insulation sponge is provided with a plurality of spaced-apart cuts.

8. A fresh air air conditioner, characterized in that: It comprises a connected fresh air air conditioner outdoor unit and a fresh air air conditioner indoor unit, and the fresh air air conditioner indoor unit is the fresh air air conditioner indoor unit according to any one of claims 1-7.

9. A control method for a fresh air air conditioner, characterized in that: The fresh air air conditioner includes a fresh air air conditioner indoor unit, and the fresh air air conditioner indoor unit includes: The housing has a fresh air cavity, and the housing is provided with a first air exchange port and a second air exchange port communicating with the fresh air cavity, wherein the first air exchange port is used to communicate with the external environment, and the second air exchange port is used to communicate with the internal environment; A fresh air module, located in the fresh air cavity, for allowing air to be exchanged between the internal environment and the external environment through the first air exchange port and the second air exchange port; Wherein, the second air exchange outlet includes at least a first fresh air outlet and a second fresh air outlet, and the control method includes: The fresh air mode is turned on, the fresh air module is started, controls at least one of the first fresh air outlet and the second fresh air outlet to discharge air to the internal environment, and adjusts the air volume of the first fresh air outlet and the second fresh air outlet to the internal environment according to the temperature difference of the internal environment; The first fresh air outlet and the second fresh air outlet have different directions, the first fresh air outlet opens toward the internal environment, and the second fresh air outlet opens toward the air inlet side of the heat exchanger of the fresh air air conditioner indoor unit, and the control method includes: The fresh air volume of the fresh air mode is set to a first air volume, the fresh air module is started, and the first fresh air outlet and the second fresh air outlet are controlled to discharge air into the internal environment at a maximum air volume. When it is detected that the temperature difference of the internal environment is greater than a preset temperature difference, the air volume of the first fresh air outlet is reduced, and the air volume of the second fresh air outlet remains unchanged; The fresh air volume of the fresh air mode is set to a second air volume, which is smaller than the first air volume, and the fresh air module is started to control at least one of the first fresh air outlet and the second fresh air outlet to discharge air. When it is detected that the temperature difference of the internal environment is greater than the preset temperature difference, it is detected whether the first fresh air outlet is discharging air. If so, it is adjusted to the second fresh air outlet to discharge air and the first fresh air outlet is not discharging air; otherwise, Enhance the heat exchange capacity of the fresh air air conditioner indoor unit and reduce the operating speed of the fresh air module, and detect the temperature difference change in the internal environment after a preset time interval. If the detected temperature difference change is greater than the preset temperature difference, continue to enhance the heat exchange capacity of the fresh air air conditioner indoor unit and reduce the operating speed of the fresh air module until the temperature difference change in the internal environment is detected to be less than the preset temperature difference after the preset time interval.

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