Fresh air device and control method thereof, and air conditioner

Abstract

The present invention discloses a fresh air device and a control method thereof, and an air conditioner, wherein the fresh air device comprises: a housing, the housing having an air inlet and an air outlet; an air valve, the air valve being movably arranged at the air inlet; and a driving device, the driving device being connected to the air valve, the driving device being used to adjust the position of the air valve to adjust the opening of the air inlet. According to the fresh air device of the present invention, the opening of the air inlet can be adjusted by adjusting the position of the air valve, thereby adjusting the air velocity and air volume of the air inlet, which is conducive to achieving an anti-condensation effect while keeping the fresh air device turned on and running.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a fresh air device and a control method thereof, and an air conditioner. Background Art

[0002] In the related art, the air valve of the fresh air device has only two modes: fully open and fully closed. When the fresh air device enters the anti-condensation mode, the air valve can only be completely closed, resulting in the user being unable to use the fresh air function, affecting the air purification efficiency of the fresh air device, reducing the user's comfort, and thus causing a decline in user experience. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a fresh air device, which can adjust the opening of the air inlet by adjusting the position of the air valve, so as to adjust the air speed and air volume of the air inlet, which is conducive to achieving the anti-condensation effect while keeping the fresh air device turned on and running.

[0004] The invention also proposes a control method for the fresh air device.

[0005] The present invention also provides an air conditioner having the fresh air device.

[0006] According to an embodiment of the present invention, the fresh air device includes: a shell having an air inlet and an air outlet; an air valve, which is movably arranged at the air inlet; and a driving device, which is connected to the air valve and is used to adjust the position of the air valve to adjust the opening of the air inlet.

[0007] According to the fresh air device of the embodiment of the present invention, the opening of the air inlet can be adjusted by adjusting the position of the air valve, so that the air intake speed and air intake volume can be adjusted, which is conducive to achieving the anti-condensation effect while keeping the fresh air device turned on and running.

[0008] In some embodiments of the present invention, the driving device is a motor, the air valve is rotatably connected to the shell, and the driving device is used to drive the air valve to rotate between an open position and a closed position. In the open position, the air valve is perpendicular to the plane where the air inlet is located, and in the closed position, the air valve is parallel to the plane where the air inlet is located.

[0009] In some embodiments of the present invention, a stop portion is provided on the outer peripheral edge of the air inlet, and the stop portion is located on the inner wall of the shell. In the radial direction of the air inlet, the stop portion extends in a direction close to the central axis of the air inlet. The stop portion is located on one side of the rotation axis of the air valve, and the rotation axis of the air valve divides the air valve into a first part and a second part. In the closed position, the upper surface of the first part abuts against the stop portion, and the lower surface of the second part abuts against the inner wall of the shell.

[0010] In some embodiments of the present invention, in the radial direction of the air inlet, the length of the abutment between the stopper and the first portion is 3 mm-5 mm.

[0011] In some embodiments of the present invention, in the radial direction of the air inlet, the length of the abutment between the second portion and the shell is 3 mm-5 mm.

[0012] In some embodiments of the present invention, a heating element is provided in the housing, and the heating element is located at a downstream end of the air inlet.

[0013] In some embodiments of the present invention, the fresh air device further includes: a first temperature detection device, which is disposed in the shell and is used to detect the fresh air temperature in the shell.

[0014] In some embodiments of the present invention, the fresh air device further includes: a second temperature detection device, the second temperature detection device is located outside the shell, and the second temperature detection device is used to detect the indoor ambient temperature.

[0015] In some embodiments of the present invention, the fresh air device also includes: a fresh air fan, which is located in the shell, and has a fixed wind gear and an automatic wind gear. In the fixed wind gear, the rotation speed of the fresh air fan is fixed; in the automatic wind gear, the rotation speed of the fresh air fan is adjustable.

[0016] According to the control method of the fresh air device of an embodiment of the present invention, the fresh air device is the above-mentioned fresh air device, and the control method includes: obtaining the fresh air temperature through the first temperature detection device, and obtaining the indoor ambient temperature through the second temperature detection device; when the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, controlling the driving device to adjust the position of the air valve to reduce the opening of the air inlet.

[0017] According to the control method of the fresh air device of an embodiment of the present invention, when the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, the control driving device adjusts the position of the air valve to reduce the opening of the air inlet, so that when the airflow blown out by the fresh air device reaches the condensation condition, the air inlet speed and air volume can be adaptively reduced by adjusting the position of the air valve, which is conducive to achieving the anti-condensation effect while keeping the fresh air device turned on and running.

[0018] In some embodiments of the present invention, a heating element is provided in the shell, and the heating element is located at the downstream end of the air inlet. The control method also includes: when the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, controlling the start-up of the heating element.

[0019] In some embodiments of the present invention, the fresh air device further includes a fresh air fan, and the control method further includes: when the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, reducing the rotation speed of the fresh air fan.

[0020] An air conditioner according to an embodiment of the present invention includes: the above-mentioned fresh air device.

[0021] According to the air conditioner of the embodiment of the present invention, by providing the above-mentioned fresh air device, the air intake speed and air intake volume can be adjusted, which is conducive to achieving the anti-condensation effect while keeping the fresh air device turned on and running.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic structural diagram of a fresh air device according to an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 is a schematic structural diagram of a fresh air device in a closed position according to an embodiment of the present invention;

[0027] Figure 4 yes Figure 3 The enlarged view of point B in the middle;

[0028] Figure 5 is a schematic structural diagram of a fresh air device in an open position according to an embodiment of the present invention;

[0029] Figure 6 is a schematic structural diagram of a fresh air device at any position according to an embodiment of the present invention;

[0030] Figure 7 is a flow chart of a method for controlling a fresh air device according to an embodiment of the present invention;

[0031] Figure 8 is a flow chart of a method for controlling a fresh air device according to another embodiment of the present invention.

[0032] Reference numerals:

[0033] Fresh air device 100;

[0034] Housing 10; air inlet 11; air outlet 12; air valve 13; first portion 131; second portion 132; drive device 14; mounting portion 15; inner cavity 16; hook portion 17;

[0035] A stopper 20;

[0036] Heating element 30; first temperature detection device 31; second temperature detection device 32;

[0037] Fresh air blower 40 ; driving motor 41 ; centrifugal wind wheel 42 . DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] The fresh air device 100 and the control method thereof according to the embodiment of the present invention are described in detail below with reference to the accompanying drawings.

[0040] Reference Figure 1 As shown, the fresh air device 100 according to an embodiment of the present invention may include: a shell 10, a wind valve 13, a driving device 14, a fresh air fan 40, a heating element 30, a first temperature detection device 31 and a second temperature detection device 32.

[0041] Reference Figure 1As shown, the housing 10 has an air inlet 11 and an air outlet 12. Specifically, the housing 10 has an inner cavity 16, and the air inlet 11 and the air outlet 12 are respectively connected to the inner cavity 16, and the air inlet 11 is connected to the outdoor environment for introducing fresh air, and the fresh air fan 40 is arranged in the housing 10. Under the drive of the fresh air fan 40, the outdoor fresh air flows into the inner cavity 16 of the housing 10 through the air inlet 11, and is discharged into the room through the air outlet 12 to purify the indoor air, thereby achieving the effect of improving the freshness of the indoor air.

[0042] Reference Figure 1 , Figure 2 and Figure 3 As shown, the air valve 13 is movably arranged at the air inlet 11, and the driving device 14 is connected to the air valve 13. The driving device 14 is used to adjust the position of the air valve 13 to adjust the opening of the air inlet 11. Therefore, the opening of the air inlet 11 can be adjusted by adjusting the position of the air valve 13, so that the air speed and air volume of the air inlet can be adjusted, which is conducive to achieving the anti-condensation effect while keeping the fresh air device 100 turned on and running.

[0043] For example, the driving device 14 is disposed in the housing 10 and connected to the inner wall of the housing 10. The output end of the driving device 14 is connected to the air valve 13. The air valve 13 has a closed position and an open position. Figure 3 As shown), the driving device 14 drives the air valve 13 to the position of closing the air inlet 11, the air intake volume of the fresh air device 100 is zero, and the wind speed is zero; in the open position, the driving device 14 drives the air valve 13 to the position of fully opening the air inlet 11, the air intake volume of the fresh air device 100 is the largest, and the wind speed of the fresh air flowing into the shell 10 is the highest. The driving device 14 can adjust the position of the air valve 13 between the closed position and the open position, and by adjusting the position of the air valve 13, the air intake volume of the fresh air device 100 can be arbitrarily adjusted between zero and the above-mentioned maximum air intake volume.

[0044] In view of this, according to the fresh air device 100 of an embodiment of the present invention, the opening of the air inlet 11 can be adjusted by adjusting the position of the air valve 13, thereby realizing the adjustment of the incoming air speed and the incoming air volume, which is beneficial to achieving the anti-condensation effect while keeping the fresh air device 100 turned on and running.

[0045] Reference Figure 1 and Figure 3As shown, in some embodiments of the present invention, the driving device 14 is a motor, and the air valve 13 is rotatably connected to the housing 10. The driving device 14 is used to drive the air valve 13 to rotate between an open position and a closed position. In the open position, the air valve 13 is perpendicular to the plane where the air inlet 11 is located, so that the air inlet area of ​​the air inlet 11 is maximized, and the amount of fresh air introduced into the fresh air device 100 is also increased. In the closed position, the air valve 13 is parallel to the plane where the air inlet 11 is located, so that the air inlet 11 is closed, and the fresh air cannot enter the fresh air device 100 from the air inlet 11. As a result, it is beneficial to adjust the air inlet volume and air inlet speed of the fresh air within the maximum range, thereby ensuring the purification efficiency of the fresh air device 100 while enhancing the anti-condensation effect of the fresh air device 100, and the structure is simple and easy to implement.

[0046] Of course, the present invention is not limited to this. The air valve 13 is also movably connected to the shell 10. For example, a slide rail is also provided on the inner wall of the shell 10, and the air valve 13 is suitable for sliding cooperation with the slide rail. When the air valve 13 fully opens the air inlet 11, the ventilation area of ​​the air inlet 11 is the largest, and the amount of fresh air introduced into the fresh air device 100 is also increased. When the air valve 13 closes the air inlet 11, the fresh air cannot enter the fresh air device 100, and the air volume is minimum.

[0047] Reference Figure 1 and Figure 4 As shown, in some embodiments of the present invention, a stop portion 20 is provided on the outer periphery of the air inlet 11, and the stop portion 20 is located on the inner wall of the shell 10. In the radial direction of the air inlet 11, the stop portion 20 extends in the direction close to the central axis of the air inlet 11. The stop portion 20 is located on one side of the rotation axis of the air valve 13. The rotation axis of the air valve 13 divides the air valve 13 into a first part 131 and a second part 132. In the closed position, the upper surface of the first part 131 abuts against the stop portion 20, and the lower surface of the second part 132 abuts against the inner wall of the shell 10. It can be understood that, in the closed position, by making the upper surface of the first part 131 of the air valve 13 abut against the stopper 20, and the lower surface of the second part 132 of the air valve 13 abut against the inner wall of the shell 10, air leakage can be effectively reduced and the sealing can be improved. In addition, when in the closed position, it can prevent the fresh air from flowing back into the fresh air device 100 through the air inlet 11 due to the excessive pressure difference between indoor and outdoor, which is beneficial to reduce the condensation of fresh air caused by the backflow of fresh air and cold air, and further help to further improve the comfort and experience of the user.

[0048] For example, refer to Figure 4As shown, the stopper 20 is located on the left side of the rotation axis of the air valve 13, and the rotation axis of the air valve 13 divides the air valve 13 into a first part 131 and a second part 132. In the closed position, the upper surface of the first part 131 abuts against the stopper 20, and the lower surface of the second part 132 abuts against the inner wall of the shell 10. For another example, the stopper 20 is located on the right side of the rotation axis of the air valve 13, and the rotation axis of the air valve 13 divides the air valve 13 into a first part 131 and a second part 132. In the closed position, the upper surface of the first part 131 abuts against the inner wall of the shell 10, and the lower surface of the second part 132 abuts against the stopper 20.

[0049] Reference Figure 3 and 4 As shown, in some embodiments of the present invention, in the radial direction of the air inlet 11, the length of the abutment and fit between the stopper 20 and the first part 131 is 3mm-5mm. In other words, in the radial direction of the air inlet 11, the length of the abutment and fit between the stopper 20 and the first part 131 can be any value between 3mm-5mm. For example, the length of the abutment and fit between the stopper 20 and the first part 131 can be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, etc. Thus, on the one hand, the length of the abutment and fit between the stopper 20 and the first part 131 can be not too small, thereby ensuring the abutment and fit area between the stopper 20 and the first part 131, thereby improving the sealing effect and the reliability of the abutment and fit. On the other hand, the length of the abutment and fit between the stopper 20 and the first part 131 can be not too large, thereby making the structures of the housing 10 and the air valve 13 simple, which is conducive to reducing costs.

[0050] Reference Figure 3 and 4 As shown, in some embodiments of the present invention, in the radial direction of the air inlet 11, the length of the abutment and fit between the second part 132 and the housing 10 is 3mm-5mm. In other words, in the radial direction of the air inlet 11, the length of the abutment and fit between the second part 132 and the housing 10 can be any value between 3mm-5mm. For example, the length of the abutment and fit between the second part 132 and the housing 10 can be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, etc. Thus, on the one hand, the length of the abutment and fit between the second part 132 and the housing 10 can be not too small, thereby ensuring the abutment and fit area between the second part 132 and the housing 10, thereby improving the sealing effect and the reliability of the abutment and fit. On the other hand, the length of the abutment and fit between the second part 132 and the housing 10 can be not too large, which can make the structure of the housing 10 and the air valve 13 simple, which is conducive to reducing costs.

[0051] Reference Figure 1As shown, in some embodiments of the present invention, a heating element 30 is provided in the housing 10, and the heating element 30 is located at the downstream end of the air inlet 11. For example, the heating element 30 may be an electric heating wire or an electric heating tube. It is understandable that the heating element 30 may heat the cold fresh air entering from the air inlet 11, increase the temperature of the fresh air, reduce the temperature difference between the fresh air and the indoor temperature, and thus prevent condensation due to overcooling of the fresh air.

[0052] Optionally, in some examples, the heating element 30 is disposed adjacent to the downstream end of the air inlet 11, and the heating element 30 is a plurality of (eg Figure 1 As shown in the figure, a plurality of heating elements 30 are arranged at intervals in the flow direction of the fresh air, thereby facilitating sufficient heating of the fresh air in the shell 10.

[0053] Reference Figure 1 and 2 As shown, in some embodiments of the present invention, the fresh air device 100 further includes: a first temperature detection device 31, which is disposed in the housing 10, and is used to detect the temperature of the fresh air in the housing 10. For example, a mounting portion 15 is disposed on the inner wall of the housing 10, and the mounting portion 15 is detachably connected to the first temperature detection device 31, wherein "detachably connected" may be a snap connection, a threaded fastener connection, or a riveted connection, etc. Thus, the fresh air temperature in the housing 10 can be detected to determine whether to adjust the air valve 13 to change the size of the fresh air intake, which is beneficial to accurately control the opening of the air inlet 11 of the fresh air device 100, and is beneficial to further avoid condensation.

[0054] like Figure 3 As shown, in some optional embodiments of the present invention, the inner wall of the shell 10 is provided with a mounting portion 15, and the mounting portion 15 includes two spaced-apart hook portions 17, and the first temperature detection device 31 is snap-connected between the two hook portions 17. Therefore, by setting the first temperature detection device 31 to be snap-connected with the mounting portion 15, the disassembly, assembly and replacement of the first temperature detection device 31 is facilitated, which is conducive to improving maintenance efficiency.

[0055] As shown in reference 3, in some optional embodiments of the present invention, the fresh air device 100 further includes: a second temperature detection device 32, the second temperature detection device 32 is located outside the housing 10, for example, the second temperature detection device 32 can be set on the indoor unit of the air conditioner described below, and the second temperature detection device 32 is used to detect the indoor ambient temperature. Therefore, it can be determined whether to adjust the air valve 13 to change the size of the fresh air intake volume according to the detection values ​​of the first temperature detection device 31 and the second temperature detection device 32, which is conducive to further accurately controlling the opening of the air inlet 11 of the fresh air device 100, thereby further avoiding condensation.

[0056] Optionally, the first temperature detection device 31 and the second temperature detection device 32 are both temperature sensors, and the fresh air device 100 also includes a control device, and there is signal transmission between the control device and the driving device 14, the first temperature detection device 31 and the second temperature detection device 32, which is conducive to realizing intelligent adjustment of the position of the air valve 13 to adjust the opening of the air inlet 11, and is conducive to improving the intelligence level of the fresh air device 100.

[0057] Reference Figure 1 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the fresh air fan 40 is located in the housing 10, and the fresh air fan 40 has a fixed wind gear and an automatic wind gear. In the fixed wind gear, the rotation speed of the fresh air fan 40 is fixed; in the automatic wind gear, the rotation speed of the fresh air fan 40 is adjustable. The fresh air fan 40 can push the fresh air into the indoor environment, which is beneficial to the flow of indoor air. For example, the fresh air fan 40 may include a drive motor 41 and a centrifugal wind wheel 42, and the drive motor 41 is used to drive the centrifugal wind wheel 42 to rotate.

[0058] For example, the fresh air fan 40 has three fixed wind speeds, 1st gear, 2nd gear, 3rd gear and automatic wind speed, 1st gear has the fastest speed, 3rd gear has the slowest speed, when the difference between indoor and outdoor ambient temperature is large, the fresh air fan 40 activates 3rd gear, so that the fresh air is fully heated in the fresh air device 100, to prevent condensation when the fresh air passes through the air outlet 12, thereby affecting the user's comfort and use experience. For another example, when the difference between indoor and outdoor ambient temperature is small, the fresh air fan 40 can activate 1st gear or 2nd gear, because the indoor and outdoor ambient temperature difference is not large, and condensation will not occur when the fresh air passes through the air outlet 12. Activating a faster wind speed gear can speed up the circulation of indoor air and improve the user's comfort and use experience;

[0059] In the automatic windshield, the speed of the fresh air fan 40 is adjustable, and the user can adjust the speed of the fresh air fan 40 according to his or her needs. For example, when the condensation condition is reached at the air outlet 12 of the fresh air device 100, the speed of the fresh air fan 40 can be reduced in the automatic windshield to avoid the occurrence of condensation, which is beneficial to improving the user experience.

[0060] Reference Figure 7 As shown, according to the control method of the fresh air device 100 of the embodiment of the present invention, the control method includes: obtaining the fresh air temperature through the first temperature detection device 31, and obtaining the indoor environment temperature through the second temperature detection device 32; when the difference between the fresh air temperature and the indoor environment temperature is greater than the preset value, the control driving device 14 adjusts the position of the air valve 13 to reduce the opening of the air inlet 11. For example, the preset value can be 5 degrees, 6 degrees, 7 degrees or 8 degrees, etc., and of course it can also be other temperature differences suitable for controlling condensation of the fresh air device 100.

[0061] Specifically, refer to Figure 6 As shown, when the difference between the fresh air temperature and the indoor ambient temperature is greater than the preset value, that is, when the condensation condition is reached at the air outlet 12 of the fresh air device 100, the position of the air valve 13 can be controlled by the driving device 14 to reduce the opening of the air inlet 11, thereby realizing the adjustment of the air intake speed and air intake volume, which is beneficial to achieve the anti-condensation effect while keeping the fresh air device 100 turned on and running.

[0062] When the difference between the fresh air temperature and the indoor ambient temperature is less than a preset value, the driving device 14 can control the position of the adjusting air valve 13 to make the opening of the air inlet 12 larger. Since the temperature difference between the indoor and outdoor environments is not large, the fresh air is not easy to produce condensation at the air outlet 12, that is, the fresh air does not need to be heated for a long time in the fresh air device 100. At this time, the opening of the air inlet 11 can be increased to speed up the entry of fresh air into the room, thereby increasing the circulation rate of the indoor air and improving the purification efficiency, thereby improving the user's comfort and usage experience.

[0063] In view of this, according to the control method of the fresh air device 100 of the embodiment of the present invention, when the difference between the fresh air temperature and the indoor ambient temperature is greater than the preset value, that is, when the air outlet 12 of the fresh air device 100 reaches the condensation condition, the position of the regulating air valve 13 can be controlled by the driving device 14 to reduce the opening of the air inlet 11, thereby adjusting the air intake speed and air intake volume, which is conducive to achieving the anti-condensation effect while keeping the fresh air device 100 turned on and running.

[0064] Reference Figure 4 and Figure 7 As shown, in some embodiments of the present invention, a heating element 30 is provided in the housing 10, and the heating element 30 is located at the downstream end of the air inlet 11, and the control method further includes: when the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, controlling the start of the heating element 30. It can be understood that when the difference between the fresh air temperature and the indoor ambient temperature is greater than the preset value, the driving device 14 can control the start of the heating element 30, and the heating element 30 heats the fresh air entering the fresh air device 100 to reduce the temperature difference between the fresh air temperature and the indoor environment, so that when the fresh air passes through the air outlet 12, condensation will not occur due to the excessive temperature difference with the indoor environment, thereby making the air outlet 12 suitable, improving the user's comfort and experience; when the difference between the fresh air temperature and the indoor ambient temperature is less than the preset value, the heating element 30 can be controlled not to start or not to start completely, thereby reducing energy consumption and helping to improve the energy efficiency of the fresh air device 100.

[0065] In some embodiments of the present invention, reference Figure 1 and Figure 7As shown, the fresh air device 100 also includes a fresh air fan 40, and the control method further includes: when the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, reducing the rotation speed of the fresh air fan 40. In this way, the adjustment of the inlet wind speed and the inlet wind volume can be achieved, which is conducive to further ensuring the anti-condensation effect while keeping the fresh air device 100 turned on and running.

[0066] For example, the fresh air fan 40 has three fixed wind speeds, namely, 1st gear, 2nd gear, 3rd gear and automatic wind speed. 1st gear has the fastest speed and 3rd gear has the slowest speed. When the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, the fresh air fan 40 activates 3rd gear, so that the fresh air is fully heated in the fresh air device 100, and condensation is prevented when the fresh air passes through the air outlet 12, thereby affecting the user's comfort and use experience. For another example, when the difference between the fresh air temperature and the indoor ambient temperature is less than a preset value, the fresh air fan 40 can activate 1st gear or 2nd gear. Since the temperature difference between the indoor and outdoor environments is not large, condensation will not occur when the fresh air passes through the air outlet 12. Activating a gear with a faster wind speed can speed up the circulation of indoor air and improve the user's comfort and use experience.

[0067] In the automatic windshield, the speed of the fresh air fan 40 is adjustable, and the user can adjust the speed of the fresh air fan 40 according to their own needs. For example, when the difference between the fresh air temperature and the indoor ambient temperature is greater than the preset value, the speed of the fresh air fan 40 in the automatic windshield can be reduced to avoid condensation.

[0068] Reference Figure 7 As shown, in some specific embodiments of the present invention, under the condition that the fresh air fan 40 is in a fixed windshield, when the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, the driving device 14 can be controlled to adjust the position of the air valve 13 to reduce the opening of the air inlet 12, and at the same time control the heating element 30 in the fresh air device 100 to start. It can be understood that by using the heating element 30 to heat the fresh air and by adjusting the position of the air valve 13 to reduce the opening of the air inlet 11, it is beneficial to quickly reduce the temperature difference between the fresh air temperature and the indoor ambient temperature, which is beneficial to avoid the occurrence of condensation, and thus can improve the user's comfort and use experience; when the difference between the fresh air temperature and the indoor ambient temperature is less than a preset value, the driving device 14 can be controlled to adjust the position of the air valve 13 to increase the opening of the air inlet 11, and at the same time control the heating element 30 in the fresh air device 100 to close, which is beneficial to speed up the introduction speed of fresh air, improve purification efficiency, and improve energy efficiency;

[0069] Reference Figure 8As shown, under the condition that the fresh air fan 40 is in the automatic windshield, when the difference between the fresh air temperature and the indoor ambient temperature is greater than the preset value, the rotation speed of the fresh air fan 40 can be reduced, the driving device 14 can be controlled to adjust the position of the air valve 13 to reduce the opening of the air inlet 11, and the start of the heating element 30 in the fresh air device 100 can be controlled. It can be understood that by reducing the rotation speed of the fresh air fan 40, heating the fresh air and adjusting the position of the air valve 13 to reduce the opening of the air inlet 11, it is beneficial to quickly reduce the temperature difference between the fresh air temperature and the indoor ambient temperature, which is beneficial to avoid the occurrence of condensation, thereby improving the user's comfort and use experience;

[0070] When the difference between the fresh air temperature and the indoor ambient temperature is less than a preset value, the rotation speed of the fresh air fan 40 can be increased, and the driving device 14 can be controlled to adjust the position of the air valve 13 to increase the opening of the air inlet 11, while the heating element 30 in the fresh air device 100 is controlled to be turned off. It can be understood that by increasing the rotation speed of the fresh air fan 40, increasing the opening of the air inlet 11 of the air valve 13 and turning off the heating element 30, it is beneficial to speed up the introduction speed of fresh air, improve purification efficiency, and at the same time improve energy efficiency.

[0071] In addition, the use scenario can be identified according to the set control logic to adjust the air intake of the fresh air device 100, which is conducive to further improving the user experience. For example, a camera device, such as a video camera, can be set on the indoor unit of the air conditioner. The camera device and the control device of the fresh air device 100 have signal transmission, and the number of people in the room can be identified through the camera device. Then, the control device can adjust the fresh air intake of the fresh air device 100 according to the number of people in the room.

[0072] The air conditioner according to the embodiment of the present invention includes: the fresh air device 100 according to the above embodiment of the present invention.

[0073] According to the air conditioner of the embodiment of the present invention, by setting the fresh air device 100 according to the above embodiment of the present invention, the intake air speed and intake air volume can be adjusted, which is beneficial to achieve the anti-condensation effect while keeping the fresh air device 100 turned on and running.

[0074] Other structures and operations of the fresh air device 100 according to the embodiment of the present invention are known to ordinary technicians in the field and will not be described in detail here.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0077] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fresh air device, characterized in that: include: A housing having an air inlet and an air outlet; An air valve, the air valve being movably arranged at the air inlet; A driving device, the driving device is connected to the air valve, and the driving device is used to adjust the position of the air valve to adjust the opening of the air inlet; A heating element is disposed in the housing, and there are multiple heating elements. The multiple heating elements are arranged at intervals in the flow direction of the fresh air and the multiple heating elements are located at the downstream end of the air inlet; A fresh air fan, the fresh air fan is located in the housing, the fresh air fan has a fixed windshield and an automatic windshield, in the fixed windshield, the speed of the fresh air fan is fixed; in the automatic windshield, the speed of the fresh air fan is adjustable; wherein, When the fresh air fan is in the automatic windshield condition; When the difference between the fresh air temperature and the indoor ambient temperature is greater than the preset value, the speed of the fresh air fan is reduced, the position of the air valve is controlled to reduce the opening of the air inlet, and the heating element is controlled to start; When the difference between the fresh air temperature and the indoor ambient temperature is less than the preset value, the speed of the fresh air fan is increased, the position of the air valve is controlled to increase the opening of the air inlet, and the heating element is controlled to be turned off.

2. The fresh air device according to claim 1, characterized in that: The driving device is a motor, and the air valve is rotatably connected to the shell. The driving device is used to drive the air valve to rotate between an open position and a closed position. In the open position, the air valve is perpendicular to the plane where the air inlet is located, and in the closed position, the air valve is parallel to the plane where the air inlet is located.

3. The fresh air device according to claim 2, characterized in that: A stop portion is provided on the outer peripheral edge of the air inlet, and the stop portion is located on the inner wall of the shell. In the radial direction of the air inlet, the stop portion extends in the direction close to the central axis of the air inlet. The stop portion is located on one side of the rotation axis of the air valve, and the rotation axis of the air valve divides the air valve into a first part and a second part. In the closed position, the upper surface of the first part abuts against the stop portion, and the lower surface of the second part abuts against the inner wall of the shell.

4. The fresh air device according to claim 3, characterized in that: In the radial direction of the air inlet, the length of the abutment between the stopper and the first portion is 3 mm-5 mm.

5. The fresh air device according to claim 3, characterized in that: In the radial direction of the air inlet, the length of the abutment between the second portion and the shell is 3mm-5mm.

6. The fresh air device according to claim 1, characterized in that: Also includes: A first temperature detection device is disposed in the shell, and is used to detect the fresh air temperature in the shell.

7. The fresh air device according to claim 1, characterized in that: Also includes: A second temperature detection device is located outside the shell and is used to detect the indoor environment temperature.

8. A method for controlling a fresh air device, characterized in that: The fresh air device is a fresh air device according to any one of claims 1 to 7, and comprises: a first temperature detection device and a second temperature detection device, the first temperature detection device is arranged in the shell, and the first temperature detection device is used to detect the fresh air temperature in the shell, and the second temperature detection device is located outside the shell, and the second temperature detection device is used to detect the indoor environment temperature; The control method comprises: Acquire the fresh air temperature through the first temperature detection device, and acquire the indoor environment temperature through the second temperature detection device; When the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, the driving device is controlled to adjust the position of the air valve to reduce the opening of the air inlet.

9. The control method of the fresh air device according to claim 8, characterized in that: A heating element is provided in the shell, and the heating element is located at the downstream end of the air inlet. The control method further includes: when the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, controlling the start-up of the heating element.

10. The control method of the fresh air device according to claim 8, characterized in that: The fresh air device also includes a fresh air fan, and the control method also includes: when the difference between the fresh air temperature and the indoor ambient temperature is greater than a preset value, reducing the rotation speed of the fresh air fan.

11. An air conditioner, characterized in that: include: A fresh air device according to any one of claims 1 to 7.

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