Air conditioner and fresh air control method thereof

Abstract

The invention discloses an air conditioner and a fresh air control method for the air conditioner. The air conditioner includes: a fresh air module; an outdoor temperature sensor; an indoor temperature sensor; and a controller. The controller is configured to: when the air conditioner is turned on, determine the difference between the absolute value of the difference between the outdoor temperature and the indoor temperature and a first temperature threshold and determine whether the outdoor temperature exceeds a limited range of the outdoor temperature. When the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, or when the outdoor temperature exceeds a limited range of the outdoor temperature, control the fresh air module to operate at a low gear; when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed a limited range of the outdoor temperature, control the fresh air module to selectively operate at different gears. Thus, the controller can control the operation of the fresh air module according to the outdoor temperature and the indoor temperature, so that the amount of outdoor fresh air introduced is more reasonable, the user's comfort is improved, and the risk of condensation is reduced.

Description

Technical Field

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

[0002] The air conditioner is equipped with a fresh air module, which can introduce outdoor fresh air into the room and complete the air exchange between indoor and outdoor, thereby purifying the indoor air, improving the indoor air quality, and increasing the indoor air oxygen content, ensuring the comfort of indoor users.

[0003] In related technologies, fresh air modules generally operate according to the set fresh air volume, and cannot be adjusted in combination with environmental factors such as temperature and humidity, and the control method is single. In many cases, it is impossible to introduce a suitable amount of fresh air from the outside, which affects the heat exchange performance of the air conditioning equipment and is prone to condensation at the fresh air outlet. In addition, when the indoor and outdoor air temperatures differ greatly, introducing an inappropriate amount of fresh air will also give users a poor experience. Summary of the invention

[0004] 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 an air conditioner, which can control the operation of the fresh air module according to the outdoor temperature and the indoor temperature, so that the amount of outdoor fresh air introduced is more reasonable, which can not only improve the user's comfort, but also reduce the risk of condensation.

[0005] The present invention further proposes a fresh air control method for an air conditioner.

[0006] The air conditioner according to an embodiment of the present invention comprises: a casing; a heat exchanger, wherein the heat exchanger is arranged in the casing; a fan, wherein the fan is arranged in the casing, and the operation of the fan introduces the airflow outside the casing into the casing, and forms a heat exchange airflow through the heat exchanger, and the heat exchange airflow is output to the outside of the casing under the drive of the fan; a fresh air module, wherein the fresh air module is used to introduce outdoor fresh air into the room; an outdoor temperature sensor, wherein the outdoor temperature sensor is used to detect the outdoor temperature; an indoor temperature sensor, wherein the indoor temperature sensor is used to detect the indoor temperature; and a controller, wherein the controller is respectively connected to the outdoor temperature sensor and the indoor temperature sensor. The temperature sensor is electrically connected to the fresh air module, and the controller is configured to: when the air conditioner is turned on, determine the difference between the absolute value of the difference between the outdoor temperature and the indoor temperature and the first temperature threshold and determine whether the outdoor temperature exceeds the outdoor temperature limit range; when the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, or when the outdoor temperature exceeds the outdoor temperature limit range, control the fresh air module to operate at a low gear; when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed the outdoor temperature limit range, control the fresh air module to selectively operate at different gears.

[0007] Therefore, by configuring the controller, the controller can determine the difference between the absolute value of the difference between the outdoor temperature and the indoor temperature and the first temperature threshold, and whether the outdoor temperature exceeds the outdoor temperature limit range, and can control the fresh air module to operate at a low gear or at different gears based on the judgment result, so that the amount of outdoor fresh air introduced is more reasonable, which can not only improve the user comfort, but also reduce the risk of condensation.

[0008] In some examples of the present invention, when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than a first temperature threshold and the outdoor temperature does not exceed a limited range of the outdoor temperature, the controller is configured to: control the fresh air module to operate at a set gear, wherein the low gear is the first gear and the set gear is greater than the first gear.

[0009] In some examples of the present invention, the set gear includes a second gear, and the controller is configured to: when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, control the fresh air module to operate at the second gear, wherein the second temperature threshold is less than the first temperature threshold, and the second gear is greater than the first gear.

[0010] In some examples of the present invention, the set gear also includes a third gear, and the controller is configured to: when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than a second temperature threshold and the outdoor temperature does not exceed a limited range of the outdoor temperature, control the fresh air module to operate according to the third gear, wherein the third gear is greater than the second gear.

[0011] In some examples of the present invention, when the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than a first temperature threshold, the controller is further configured to: control the fresh air module to stop operating.

[0012] In some examples of the present invention, when the outdoor temperature exceeds a limited range of outdoor temperature, the controller is further configured to: control the fresh air module to stop operating.

[0013] In some examples of the present invention, when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than a first temperature threshold and the outdoor temperature does not exceed a limited range of the outdoor temperature, the controller is further configured to: control the fresh air module to operate at different gears according to instructions received from a remote control.

[0014] A fresh air control method for an air conditioner according to an embodiment of the present invention includes: when the air conditioner is turned on, obtaining the outdoor temperature and the absolute value of the difference between the outdoor temperature and the indoor temperature; judging the difference between the absolute value of the difference between the outdoor temperature and the indoor temperature and a first temperature threshold, and judging whether the outdoor temperature exceeds a specified range of the outdoor temperature; when the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, or when the outdoor temperature exceeds a specified range of the outdoor temperature, controlling the fresh air module to stop running or to run at a low gear; when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed the specified range of the outdoor temperature, controlling the fresh air module to selectively run at different gears.

[0015] In some examples of the present invention, the low gear is the first gear, and when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed the outdoor temperature limit range, controlling the fresh air module to selectively operate in different gears includes: when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, controlling the fresh air module to operate in the second gear, wherein the second temperature threshold is less than the first temperature threshold, and the second gear is greater than the first gear; when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and not greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, controlling the fresh air module to operate in the third gear, wherein the third gear is greater than the second gear.

[0016] In some examples of the present invention, when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than a first temperature threshold and the outdoor temperature does not exceed a limited range of the outdoor temperature, controlling the fresh air module to selectively operate at different gears includes: the fresh air module operates at different gears according to instructions received by a remote control.

[0017] 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

[0018] 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:

[0019] Figure 1 is a schematic diagram of an air conditioner according to an embodiment of the present invention;

[0020] Figure 2 is a flow chart of a fresh air control method for an air conditioner according to an embodiment of the present invention;

[0021] Figure 3 is a flow chart of a fresh air control method for an air conditioner according to an embodiment of the present invention;

[0022] Figure 4 is a partial flow chart of a fresh air control method for an air conditioner according to an embodiment of the present invention;

[0023] Figure 5 is a partial flow chart of a fresh air control method for an air conditioner according to an embodiment of the present invention;

[0024] Figure 6 is a partial flow chart of step S4 according to an embodiment of the present invention;

[0025] Figure 7 is a partial flow chart of step S4 according to an embodiment of the present invention;

[0026] Figure 8 is a partial flow chart of step S4 according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0028] Reference below Figure 1-Figure 8 An air conditioner according to an embodiment of the present invention is described, and the air conditioner may adopt a fresh air control method of the air conditioner.

[0029] Combination Figure 1 As shown, the air conditioner according to the present invention can mainly include: a casing, a heat exchanger, a fan, a fresh air module, an outdoor temperature sensor, an indoor temperature sensor and a controller. The heat exchanger and the fan are both arranged in the casing, so that the casing can play a protective role for the heat exchanger and the fan, and can prevent the corrosion of foreign objects from the outside, and the damage of the heat exchanger and the fan structure caused by the impact of external forces, thereby improving the structural reliability of the heat exchanger and the fan, and improving the structural reliability of the air conditioner, and ensuring that the air conditioner can work normally.

[0030] Furthermore, a heat exchange air inlet and a heat exchange air outlet are provided on the casing. When the air conditioner is working, the airflow outside the casing can be introduced into the casing through the heat exchange air inlet by the operation of the fan, and then formed into a heat exchange airflow through heat exchange in the heat exchanger. The heat exchange airflow can be further output to the outside of the casing through the heat exchange air outlet under the drive of the fan, so that the air conditioner can deliver air with suitable temperature to the room, realize the air conditioner's regulating effect on the indoor temperature, ensure the normal operation of the air conditioner, and meet the user's usage needs.

[0031] Specifically, in the present application, the air conditioner and the outdoor unit of the air conditioner work together, wherein the heat exchanger can be an evaporator or a condenser, and the heat exchanger in the corresponding outdoor unit of the air conditioner is a condenser or an evaporator, and the air conditioner performs the refrigeration cycle of the air conditioner by using a compressor, an expansion valve, a condenser and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the air that has been conditioned and heat exchanged. The compressor compresses the refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process. The expansion valve expands the liquid phase refrigerant in a high temperature and high pressure state condensed in the condenser into a low pressure liquid phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low temperature and low pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the whole cycle, the air conditioner can adjust the temperature of the indoor space. Furthermore, the fan in the air conditioner of the present application can accelerate the flow rate of wind flowing through the heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger and improving the working performance of the air conditioner.

[0032] Furthermore, the controller is electrically connected to the outdoor temperature sensor, the indoor temperature sensor and the fresh air module, respectively, and the controller can be configured as follows: when the air conditioner is turned on, determine the difference between the absolute value of the difference between the outdoor temperature and the indoor temperature and the first temperature threshold, and determine whether the outdoor temperature exceeds the outdoor temperature limit range; when the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, or when the outdoor temperature exceeds the outdoor temperature limit range, control the fresh air module to operate at a low gear; when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, control the fresh air module to selectively operate at different gears.

[0033] Specifically, the fresh air module can introduce outdoor fresh air into the room to realize the exchange of indoor and outdoor air, thereby purifying the indoor air, improving the indoor air quality, and increasing the oxygen content of the indoor air, which can ensure the comfort of indoor users. However, considering the temperature difference between outdoor fresh air and indoor air, as well as the amount of outdoor fresh air introduced, the heat exchange performance of the air conditioner will be affected, thereby affecting the comfort of indoor users, and even condensation may be generated at the fresh air outlet due to the intersection of cold and hot air. Therefore, it is necessary to control the amount of outdoor fresh air introduced according to the temperature of the outdoor fresh air and the temperature of the indoor air.

[0034] By setting an indoor temperature sensor and an outdoor temperature sensor, the indoor temperature sensor can detect the indoor temperature, and the outdoor temperature sensor can detect the outdoor temperature, wherein the outdoor temperature is the temperature of the outdoor fresh air, and the indoor temperature is the temperature of the indoor air. The air conditioner can also include a storage unit and a calculation unit, and the outdoor temperature sensor and the indoor temperature sensor are electrically connected to the calculation unit, so that the calculation unit can receive the indoor temperature detected by the indoor temperature sensor and the outdoor temperature detected by the outdoor temperature sensor, and calculate the absolute value of the difference between the outdoor temperature and the indoor temperature accordingly. The storage unit can pre-store a first temperature threshold, an outdoor temperature limit range, and a working gear of the fresh air module.

[0035] Furthermore, by electrically connecting the storage unit and the computing unit to the controller respectively, and electrically connecting the controller to the fresh air module, the controller can obtain the outdoor temperature and the absolute value of the difference between the outdoor temperature and the indoor temperature from the computing unit, and the controller can obtain the first temperature threshold from the storage unit. By configuring the controller, the controller can determine the relationship between the absolute value of the difference between the outdoor temperature and the indoor temperature and the first temperature threshold, and can determine whether the outdoor temperature exceeds the outdoor temperature limit range. Then, the controller can control the operation of the fresh air module according to the judgment result, so that the fresh air module can operate at different working gears under different circumstances.

[0036] When the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, it means that the temperature difference between the indoor and outdoor is too large. When the controller determines that the outdoor temperature exceeds the outdoor temperature limit range, it means that the outdoor temperature is too high or too low. At this time, if a large amount of outdoor fresh air is introduced, it will not only affect the heat exchange performance of the air conditioner and the regulation of the indoor temperature, but also cause condensation at the fresh air outlet, affecting the comfort of indoor users. In this case, by making the controller control the fresh air module to operate at a low gear, it can ensure that the amount of outdoor fresh air introduced is more reasonable. On the premise of ensuring that outdoor fresh air can be introduced to improve the indoor air quality, the heat exchange performance of the air conditioner can be guaranteed, condensation can be prevented at the fresh air outlet, and the comfort of indoor users can be guaranteed.

[0037] When the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, it means that the temperature of the outdoor fresh air is appropriate at this time. However, considering that the introduced outdoor fresh air temperatures are different, the degree of impact on the heat exchange performance of the air conditioner heat exchanger is different, and the degree of impact on the indoor temperature is also different. At this time, the controller controls the fresh air module to selectively operate at different gears. In this way, the working gear of the fresh air module can be matched with the indoor temperature and the outdoor temperature, that is, the amount of outdoor fresh air introduced can be matched with the indoor temperature and the outdoor temperature, so that the amount of outdoor fresh air introduced can be more reasonable. On the premise of improving the indoor air quality, the comfort of indoor users can be guaranteed, and the air conditioner can be made more intelligent and reliable.

[0038] Therefore, by configuring the controller, the controller can determine the difference between the absolute value of the difference between the outdoor temperature and the indoor temperature and the first temperature threshold, and whether the outdoor temperature exceeds the outdoor temperature limit range, and can control the fresh air module to operate at a low gear or at different gears based on the judgment result, so that the amount of outdoor fresh air introduced is more reasonable, which can not only improve the user comfort, but also reduce the risk of condensation, making the air conditioner more intelligent and reliable.

[0039] Further, when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the controller can be configured to: control the fresh air module to operate at a set gear, wherein the low gear is the first gear, and the set gear is greater than the first gear. Specifically, the low gear is set to the first gear, and when the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the fresh air module can be controlled by the controller to operate at the set gear, and the set gear is greater than the first gear, so that the fan can be ensured to work at a higher speed, and compared with the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, or compared with the outdoor temperature exceeding the outdoor temperature limit range, the fresh air module can introduce more outdoor fresh air into the room, thereby more effectively improving the indoor air quality, meeting the user's use needs, and ensuring the user's comfort while ensuring the working performance of the air conditioner.

[0040] Wherein, the setting gear may include a second gear, and the controller may be configured to: when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, control the fresh air module to operate at the second gear, wherein the second temperature threshold is less than the first temperature threshold, and the second gear is greater than the first gear. Specifically, the setting gear may include the second gear, and the second gear is greater than the first gear, and the second temperature threshold is also pre-stored in the storage unit, and the second temperature threshold is set to be less than the first temperature threshold, so that when the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, it means that the indoor and outdoor temperature difference is large at this time, and a large amount of outdoor fresh air may affect the heat exchange performance of the air conditioner and the comfort of indoor users. Through further configuration of the controller, the controller controls the fresh air module to operate at the second gear, and on the premise of increasing the amount of outdoor fresh air introduced, prevent the introduction of too much outdoor fresh air, thereby ensuring the normal operation of the air conditioner and the comfort of indoor users.

[0041] Furthermore, the setting gear can also include a third gear, and the controller can be configured to: when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, control the fresh air module to operate in the third gear, wherein the third gear is greater than the second gear. Specifically, the setting gear can also include the third gear, and the third gear is greater than the second gear. Through further configuration of the controller, when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, it means that the indoor and outdoor temperature difference is small at this time, and the introduction of a large amount of outdoor fresh air will not affect the heat exchange performance of the air conditioner. Through further configuration of the controller, the controller can control the fresh air module to operate in the third gear, further increasing the amount of outdoor fresh air introduced, thereby improving the working efficiency of the fresh air module and enhancing the user experience.

[0042] In this way, through further configuration of the controller, when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold, and the outdoor temperature does not exceed the limited range of the outdoor temperature, the working gear of the fresh air module can be more closely matched with the outdoor temperature and the indoor temperature, thereby making the operation of the fresh air module more intelligent and reliable, and making the amount of outdoor fresh air introduced more reasonable, thereby improving the working performance of the air conditioner and enhancing the user experience.

[0043] In some embodiments of the present invention, the first temperature threshold can be set to 20°C, the second temperature threshold can be set to 10°C, and the outdoor temperature limit range can be set to -10°C to 40°C. This can make the settings of the first temperature threshold, the second temperature threshold and the outdoor temperature limit range more reasonable, and make the controller's control of the working gear of the fresh air module more reasonable, so that the amount of outdoor fresh air introduced can be better matched with the outdoor temperature and the indoor temperature, and can further make the amount of outdoor fresh air introduced more reasonable, thereby improving user comfort.

[0044] It should be noted that in actual applications, the first temperature threshold, the second temperature threshold and the outdoor temperature limit range can be adjusted as needed to adapt to the user's usage needs in different scenarios, further enhance the intelligence and humanization of the air conditioner, broaden the application scenarios of the air conditioner, and further enhance the user's experience.

[0045] When the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, the controller can also be configured to: control the fresh air module to stop running. Specifically, when the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, the controller can be further configured so that the controller can control the fresh air module to stop running, so that the controller can control the fresh air module to stop running according to the specific size relationship between the absolute value of the difference between the outdoor temperature and the indoor temperature and the first temperature threshold, and when it is determined that the absolute value of the difference between the outdoor temperature and the indoor temperature is much greater than the first temperature threshold, the controller controls the fresh air module to stop running, so that the air conditioner stops introducing outdoor fresh air into the room, thereby preventing the outdoor fresh air with a large temperature difference from the indoor air from causing damage to the air conditioner structure when it is introduced into the room, and condensation from occurring at the fresh air outlet, and preventing the outdoor fresh air with a large temperature difference from causing a sudden change in indoor temperature after being introduced into the room, thereby reducing the user's comfort.

[0046] When the outdoor temperature exceeds the outdoor temperature limit range, the controller can also be configured to: control the fresh air module to stop running. Specifically, when the controller determines that the outdoor temperature exceeds the outdoor temperature limit range, the controller can be further configured so that the controller can control the fresh air module to stop running, so that the controller can control the fresh air module to stop running according to the degree to which the outdoor temperature exceeds the outdoor temperature limit range, and when it is determined that the outdoor temperature far exceeds the outdoor temperature limit range, the air conditioner stops introducing outdoor fresh air into the room, thereby preventing the outdoor fresh air with extreme temperature from causing damage to the air conditioner structure when it is introduced into the room, and preventing the outdoor fresh air with extreme temperature from causing a sudden change in indoor temperature after being introduced into the room, thereby reducing the user's comfort.

[0047] Further, when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the controller can also be configured to: control the fresh air module to operate at different gears according to the instructions received by the remote controller. Specifically, when the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the controller can be further configured so that the controller can control the fresh air module to operate at different gears according to the instructions received by the remote controller, so that when the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the outdoor fresh air with suitable temperature can be introduced into the room, and the user can input instructions through the remote controller, and the controller can receive the instructions of the remote controller, and control the fresh air module to operate at different gears according to the received user instructions, so that the user can manually control the operation of the fresh air module according to actual needs, thereby expanding the control method of the air conditioner, not only automatically controlling the operation of the fresh air module, but also manually controlling the operation of the fresh air module, and further improving the user experience.

[0048] Combination Figure 2-Figure 5 As shown, the fresh air control method of the air conditioner according to the embodiment of the present invention may include the following steps:

[0049] S1, when the air conditioner is turned on, obtain the outdoor temperature and the absolute value of the difference between the outdoor temperature and the indoor temperature;

[0050] S2, determining the difference between the absolute value of the difference between the outdoor temperature and the indoor temperature and the first temperature threshold, and determining whether the outdoor temperature exceeds the outdoor temperature limit range;

[0051] S3. When the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, or when the outdoor temperature exceeds the outdoor temperature limit range, the fresh air module is controlled to stop running or run at a low gear;

[0052] S4. When the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed the outdoor temperature limit range, the fresh air module is controlled to selectively operate at different gears.

[0053] Specifically, when the air conditioner is turned on, the controller can first obtain the outdoor temperature and the absolute value of the difference between the outdoor temperature and the indoor temperature, and then judge the size between the absolute value of the difference between the outdoor temperature and the indoor temperature and the first temperature threshold, and judge whether the outdoor temperature exceeds the outdoor temperature limit range, and selectively control the operation of the fresh air module based on the judgment result.

[0054] When the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, or when the outdoor temperature of the controller exceeds the outdoor temperature limit range, the controller can control the fresh air module to stop running or run at a low gear, thereby effectively controlling the amount of outdoor fresh air with an inappropriate temperature introduced into the room, avoiding the introduction of outdoor fresh air with an inappropriate temperature into the room, and thus ensuring the heat exchange performance of the air conditioner, preventing condensation at the fresh air outlet, and ensuring the user's comfort.

[0055] When the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the controller can control the fresh air module to selectively operate at different gears, thereby effectively controlling the amount of outdoor fresh air introduced at an appropriate temperature, so that the working gear of the fresh air module matches the indoor temperature and the outdoor temperature, that is, the amount of outdoor fresh air introduced can be matched with the indoor temperature and the outdoor temperature, so that the amount of outdoor fresh air introduced can be more reasonable, thereby ensuring the comfort of indoor users.

[0056] Furthermore, combined with Figure 2 , Figure 6 and Figure 7 As shown, the low gear is the first gear, and step S4 may mainly include:

[0057] S4-1, when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the fresh air module is controlled to operate at the second gear, wherein the second temperature threshold is less than the first temperature threshold, and the second gear is greater than the first gear;

[0058] S4-2. When the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and not greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the fresh air module is controlled to operate in the third gear, wherein the third gear is greater than the second gear.

[0059] Specifically, when the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed the outdoor temperature limit range, the fresh air module is controlled to selectively operate at different gears. The controller can further judge the absolute value of the outdoor temperature and the indoor temperature and the second temperature threshold, and selectively control the working gear of the fresh air module according to the judgment result. Among them, the second temperature threshold is less than the first temperature threshold, and the working gear of the fresh air module can include the first gear, the second gear and the third gear, the low gear is the first gear, the second gear is greater than the first gear, and the third gear is greater than the second gear.

[0060] When the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the controller can control the fresh air module to operate in the second gear, so that the amount of outdoor fresh air introduced is relatively small, thereby ensuring the heat exchange performance of the air conditioner and preventing the indoor temperature from dropping while improving the indoor air quality, thereby ensuring the comfort of indoor users.

[0061] When the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and not greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the controller can control the fresh air module to operate according to the third gear, so that a larger amount of outdoor fresh air is introduced, thereby improving the working efficiency of the fresh air module and enhancing the user experience.

[0062] In this way, when the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed the outdoor temperature limit range, the operation of the fresh air module can be better matched with the indoor temperature and the outdoor temperature, making the air conditioner more intelligent and reliable.

[0063] Combination Figure 3 and Figure 8 As shown, step S4 may also include: S4-3, the fresh air module operates at different gears according to the instructions received by the remote control. Specifically, when the controller determines that the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed the outdoor temperature limit range, the controller controls the fresh air module to selectively operate at different gears. The user can input instructions to the remote control, and the controller can receive the instructions and control the fresh air module accordingly, so that the fresh air module operates at different gears according to the instructions received by the remote control. In this way, the user can manually control the working gear of the fresh air module through the remote control, so that the user can manually control the amount of outdoor fresh air introduced according to actual needs, and then further expand the control method of the fresh air module, further improve the user experience, and meet the different usage needs of the user.

[0064] 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.

[0065] 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.

[0066] 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. An air conditioner, characterized in that: include: chassis; a heat exchanger, the heat exchanger being disposed in the casing; A fan, the fan being arranged in the casing, the operation of the fan introducing the airflow outside the casing into the casing, and forming a heat exchange airflow through the heat exchanger, and the heat exchange airflow is output to the outside of the casing under the drive of the fan; A fresh air module, which is used to introduce outdoor fresh air into the room; An outdoor temperature sensor, wherein the outdoor temperature sensor is used to detect the outdoor temperature; An indoor temperature sensor, wherein the indoor temperature sensor is used to detect the indoor temperature; A controller, wherein the controller is electrically connected to the outdoor temperature sensor, the indoor temperature sensor and the fresh air module respectively, and the controller is configured as follows: When the air conditioner is turned on, the difference between the absolute value of the difference between the outdoor temperature and the indoor temperature and the first temperature threshold is determined, and whether the outdoor temperature exceeds the outdoor temperature limit range is determined; when the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than the first temperature threshold, or when the outdoor temperature exceeds the outdoor temperature limit range, the fresh air module is controlled to operate at a low gear; when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed the outdoor temperature limit range, the fresh air module is controlled to selectively operate at different gears; When the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than a first temperature threshold and the outdoor temperature does not exceed a limited range of outdoor temperatures, the controller is configured to: control the fresh air module to operate at a set gear, wherein the low gear is a first gear, and the set gear is greater than the first gear; The set gear includes a second gear, and the controller is configured to: when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, control the fresh air module to operate at the second gear, wherein the second temperature threshold is less than the first temperature threshold, and the second gear is greater than the first gear.

2. The air conditioner according to claim 1, characterized in that: The set gear also includes a third gear, and the controller is configured to: when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the second temperature threshold and the outdoor temperature does not exceed the outdoor temperature limit range, control the fresh air module to operate according to the third gear, wherein the third gear is greater than the second gear.

3. The air conditioner according to claim 1, characterized in that: When the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than a first temperature threshold, the controller is further configured to: Control the fresh air module to stop running.

4. The air conditioner according to claim 1, characterized in that: When the outdoor temperature exceeds the outdoor temperature limit range, the controller is further configured to: Control the fresh air module to stop running.

5. The air conditioner according to claim 1, characterized in that: When the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than a first temperature threshold and the outdoor temperature does not exceed a limited range of outdoor temperature, the controller is further configured to: The fresh air module is controlled to operate at different gears according to the instructions received by the remote controller.

6. A fresh air control method for an air conditioner, applied to the air conditioner according to any one of claims 1 to 5, characterized in that: include: When the air conditioner is turned on, obtaining the outdoor temperature and the absolute value of the difference between the outdoor temperature and the indoor temperature; Determine the difference between the absolute value of the difference between the outdoor temperature and the indoor temperature and a first temperature threshold, and determine whether the outdoor temperature exceeds a limited range of outdoor temperature; When the absolute value of the difference between the outdoor temperature and the indoor temperature is greater than a first temperature threshold, or when the outdoor temperature exceeds a limited range of the outdoor temperature, the fresh air module is controlled to stop running or run at a low gear; When the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than a first temperature threshold and the outdoor temperature does not exceed a limited range of outdoor temperature, the fresh air module is controlled to selectively operate at different gears.

7. The fresh air control method of the air conditioner according to claim 6, characterized in that: The low gear is the first gear, and when the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and the outdoor temperature does not exceed the outdoor temperature limit range, controlling the fresh air module to selectively operate at different gears includes: When the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the fresh air module is controlled to operate at the second gear, wherein the second temperature threshold is less than the first temperature threshold, and the second gear is greater than the first gear; When the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than the first temperature threshold and not greater than the second temperature threshold, and the outdoor temperature does not exceed the outdoor temperature limit range, the fresh air module is controlled to operate in the third gear, wherein the third gear is greater than the second gear.

8. The fresh air control method of the air conditioner according to claim 6, characterized in that: When the absolute value of the difference between the outdoor temperature and the indoor temperature is not greater than a first temperature threshold and the outdoor temperature does not exceed a limited range of outdoor temperature, controlling the fresh air module to selectively operate at different gears includes: The fresh air module operates at different gears according to the instructions received by the remote control.

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