Air conditioner

Abstract

The present application relates to an air conditioner, belonging to the technical field of air conditioning, the air conditioner comprises a shell, a heat exchange fan, an indoor heat exchanger, a humidifier, a fresh air fan, an aldehyde removal module, a formaldehyde detector and a controller, the controller is configured to: control the formaldehyde detector to obtain current formaldehyde content values every preset time, fit the plurality of current formaldehyde content values to form a formaldehyde release curve and configure in a coordinate system;Calculate the area between the formaldehyde release curve and the horizontal axis of the coordinate system to obtain a formaldehyde fitting area;If the formaldehyde fitting area is greater than a first preset area and less than a second preset area, enter a first mode;If the formaldehyde fitting area is greater than the second preset area and less than a third preset area, enter a second mode;If the formaldehyde fitting area is greater than the third preset area and less than a fourth preset area, enter a third mode;If the formaldehyde fitting area is greater than the fourth preset area, enter a fourth mode.

Description

air conditioner Technical Field

[0001] This application relates to the technical field of air conditioning, and more particularly to an air conditioner. Background Technology

[0002] Currently, with the improvement of people's living standards, health is becoming an increasingly important factor in the home environment. In the home appliance market, more and more appliances are being developed around the theme of "health." Formaldehyde is one of the main pollutants in indoor decoration and renovation. Due to its characteristics of high latency, long release period, and high toxicity, and given that the formaldehyde exceedance rate in newly decorated homes in my country is as high as 80% or more, efficient formaldehyde removal has become a hot topic in recent years. Indoor formaldehyde exists mainly in three forms: free, adsorbed, and solidified. Solidified formaldehyde can be released into the air as free formaldehyde, or it can be adsorbed in curtains and carpets after release. Free formaldehyde can be inhaled, leading to damage to the nervous system, coughing, chest tightness, abnormal immune system, tissue cancer, and even death.

[0003] An air conditioner, also known as an air conditioning unit, is a device that uses artificial means to regulate and control parameters such as temperature, humidity, and airflow within a building or structure. Air conditioners typically consist of an indoor unit and an outdoor unit. Some air conditioners have formaldehyde removal capabilities; however, currently, formaldehyde removal via air conditioning relies on a single method, resulting in low efficiency and high energy consumption. Summary of the Invention

[0004] This invention at least partially solves one of the technical problems in the related art.

[0005] Therefore, this application aims to provide an air conditioner that, by detecting the indoor formaldehyde content, fits a formaldehyde release curve, and determines the formaldehyde fitting area formed between the formaldehyde release curve and the horizontal axis in the coordinate system, and enters different modes by judging the size of the area, and selects the corresponding mode for different scenarios, thereby improving formaldehyde removal efficiency while reducing energy consumption.

[0006] To achieve the above objectives, the present invention provides an air conditioner, comprising:

[0007] The housing has a heat exchange outlet and a fresh air outlet.

[0008] A heat exchange fan is disposed inside the housing and is used to deliver air conditioning air to the room through the heat exchange outlet.

[0009] An indoor heat exchanger is a device that allows heat exchange between the refrigerant flowing inside and the air to form a heating or cooling cycle.

[0010] A humidifier, disposed within the housing, is used to increase indoor humidity in order to accelerate the volatilization of formaldehyde;

[0011] A fresh air fan is installed inside the housing and is used to deliver outdoor fresh air to the room through the fresh air outlet.

[0012] A formaldehyde removal module is disposed within the housing and is used to remove formaldehyde.

[0013] A formaldehyde detector, used to detect indoor formaldehyde to obtain the current formaldehyde content value;

[0014] The controller is configured to: control the formaldehyde detector to acquire the current formaldehyde content value at preset time intervals; fit multiple current formaldehyde content values ​​to form a formaldehyde release curve and arrange it in a coordinate system; calculate the area between the formaldehyde release curve and the horizontal axis of the coordinate system to obtain the formaldehyde fitting area; if the formaldehyde fitting area is greater than a first preset area and less than a second preset area, enter a first mode; if the formaldehyde fitting area is greater than a second preset area and less than a third preset area, enter a second mode; if the formaldehyde fitting area is greater than a third preset area and less than a fourth preset area, enter a third mode; if the formaldehyde fitting area is greater than a fourth preset area, enter a fourth mode.

[0015] In the technical solution, the formaldehyde content in the room is detected, a formaldehyde release curve is fitted, and the formaldehyde fitting area formed between the formaldehyde release curve and the horizontal axis in the coordinate system is determined. By judging the size of this area, different modes are entered. The corresponding mode is selected for different scenarios, which improves formaldehyde removal efficiency while reducing energy consumption.

[0016] In some embodiments of this application, the controller is configured to: turn on the fresh air fan after entering the first mode; and turn off the fresh air fan and exit the first mode if the current formaldehyde content is lower than a first preset content value.

[0017] In the technical solution, the formaldehyde-fitted area is greater than a first preset area but less than a second preset area, thus entering the first mode. In the first mode, the formaldehyde content is relatively low, so a fresh air fan introduces fresh outdoor air into the room, and air pressure is used to expel the formaldehyde-containing air from the room to the outside, thereby achieving formaldehyde removal.

[0018] In some embodiments of this application, the controller is configured to: upon entering the second mode, turn on the humidifier to bring the indoor humidity to a preset value; and turn on the fresh air fan and the formaldehyde removal module.

[0019] In the technical solution, the formaldehyde content in the second mode is higher than that in the first mode. Therefore, the indoor humidity is increased by using a humidifier, and the formaldehyde release rate is increased by taking advantage of the characteristic that the higher the humidity, the faster the formaldehyde is released, thereby increasing the formaldehyde content in the air. The formaldehyde removal module is used to remove the formaldehyde, and the fresh air fan is used to exhaust the formaldehyde-containing air from the room.

[0020] In some embodiments of this application, the controller is configured to: in the second mode, if the current formaldehyde content value is less than a second preset content value, enter the first mode.

[0021] In the technical solution, if the current formaldehyde content is less than the second preset content value, it means that the indoor formaldehyde content has reached a low level. Therefore, the formaldehyde removal module enters the first mode, which only exhausts the indoor air containing formaldehyde through the fresh air fan, thus saving costs.

[0022] In some embodiments of this application, the controller is configured to: after entering the third mode, control the indoor heat exchanger to be used as a condenser so that the indoor temperature reaches a preset temperature value; and turn on the fresh air fan and the formaldehyde removal module.

[0023] In the technical solution, the formaldehyde content in the third mode is higher than that in the second mode. Therefore, the indoor temperature is increased by using an indoor heat exchanger. The formaldehyde release rate is increased by taking advantage of the characteristic that the higher the temperature, the faster the formaldehyde is released, thereby increasing the formaldehyde content in the air. A formaldehyde removal module is used to remove the formaldehyde, and a fresh air fan is used to exhaust the formaldehyde-containing air from the room.

[0024] In some embodiments of this application, the controller is configured to: in the third mode, if the current formaldehyde content value is less than a third preset content value, enter the first mode.

[0025] In the technical solution, if the current formaldehyde content is less than the third preset content value, it means that the indoor formaldehyde content has reached a low level. Therefore, the formaldehyde removal module enters the first mode, which only exhausts the indoor air containing formaldehyde through the fresh air fan, thus saving costs.

[0026] In some embodiments of this application, the controller is configured to: upon entering the fourth mode, turn on the humidifier to bring the indoor humidity to a preset value; control the indoor heat exchanger to be used as a condenser to bring the indoor temperature to a preset value; and turn on the fresh air fan and the formaldehyde removal module.

[0027] In the technical solution, the formaldehyde content is relatively high in the fourth mode. Therefore, the indoor temperature is increased by an indoor heat exchanger, the indoor humidity is increased by a humidifier, and the formaldehyde release rate is increased by taking advantage of the characteristic that the higher the temperature and humidity, the faster the formaldehyde is released, thereby increasing the formaldehyde content in the air. The formaldehyde is removed by a formaldehyde removal module, and the formaldehyde-containing air in the room is exhausted by a fresh air fan.

[0028] In some embodiments of this application, the controller is configured to: in the fourth mode, if the current formaldehyde content value is less than a fourth preset content value, enter the first mode.

[0029] In the technical solution, if the current formaldehyde content is less than the fourth preset content value, it means that the indoor formaldehyde content has reached a low level. Therefore, the formaldehyde removal module enters the first mode, which only exhausts the indoor air containing formaldehyde through the fresh air fan, thus saving costs.

[0030] In some embodiments of this application, the controller is configured to: when the formaldehyde detector acquires the current formaldehyde content value at preset intervals, only when the number of current formaldehyde content values ​​is greater than a preset number, fit multiple current formaldehyde content values ​​to form a formaldehyde release curve and configure it in a coordinate system.

[0031] In the technical solution, the formaldehyde release curve formed by fitting will be more accurate when the current formaldehyde content value is greater than the preset value, thereby improving the accuracy and ensuring that the corresponding mode can be accurately entered.

[0032] In some embodiments of this application, the formaldehyde removal module includes an activated carbon layer for adsorbing formaldehyde.

[0033] In this technical solution, formaldehyde in the air is adsorbed by an activated carbon layer to reduce the formaldehyde content.

[0034] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] Figure 1 is a schematic diagram of the overall structure of an air conditioner according to an embodiment of this application;

[0036] Figure 2 is a schematic diagram of the overall structure of an air conditioner according to an embodiment of this application;

[0037] Figure 3 is a schematic diagram of the overall structure of an air conditioner according to an embodiment of this application;

[0038] Figure 4 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0039] Figure 5 is a lower coordinate system of a first mode of an air conditioner according to an embodiment of this application;

[0040] Figure 6 is a lower coordinate system of a second mode of an air conditioner according to an embodiment of this application;

[0041] Figure 7 is the lower coordinate system of the third mode of the air conditioner according to the embodiments of this application;

[0042] Figure 8 is the lower coordinate system of the fourth mode of the air conditioner according to the embodiments of this application;

[0043] Figure 9 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0044] Figure 10 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0045] Figure 11 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0046] Figure 12 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0047] Figure 13 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0048] Figure 14 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0049] Figure 15 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0050] Figure 16 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0051] Figure 17 is a flowchart of the operation of an air conditioner according to an embodiment of this application;

[0052] Figure 18 is a flowchart of the operation of an air conditioner according to an embodiment of the present application.

[0053] In the above diagrams: 100, casing; 200, outdoor unit. Detailed Implementation

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0059] In this application, the air conditioner performs a refrigeration cycle in its indoor unit using a compressor, condenser, expansion valve, and indoor heat exchanger. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, supplying refrigerant to conditioned and heat-exchanged air. The compressor compresses the refrigerant gas at a low temperature and low pressure, discharging it at a high temperature and high pressure. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The indoor heat exchanger evaporates the refrigerant that has expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The indoor heat exchanger achieves a cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner's indoor unit can regulate the temperature of the indoor space. The outdoor unit of an air conditioner indoor unit refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of an air conditioner indoor unit includes an indoor heat exchanger, and an expansion valve can be provided in either the indoor or outdoor unit. The indoor or outdoor heat exchanger can function as either a condenser or a refrigerant. When the indoor heat exchanger functions as a condenser, the air conditioner indoor unit acts as a heater in heating mode; when it functions as a refrigerant, it acts as a cooler in cooling mode.

[0060] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0061] As shown in Figures 1 to 8, in an illustrative embodiment of the air conditioner of the present invention, the air conditioner includes: a housing 100, a heat exchange fan, an indoor heat exchanger, a humidifier, a fresh air fan, a formaldehyde removal module, a formaldehyde detector, and a controller. The housing 100 has a heat exchange outlet and a fresh air outlet. The heat exchange fan is disposed within the housing 100 and is used to deliver air conditioning air to the room through the heat exchange outlet. The refrigerant flowing inside the indoor heat exchanger exchanges heat with the air to form a heating cycle or a cooling cycle. The humidifier is disposed within the housing 100 and is used to increase indoor humidity to accelerate the volatilization of formaldehyde. The fresh air fan is disposed within the housing 100 and is used to deliver outdoor fresh air to the room through the fresh air outlet. The formaldehyde removal module is disposed within the housing 100 and is used to remove formaldehyde. The formaldehyde detector is used to detect indoor formaldehyde to obtain the current formaldehyde content value.

[0062] The controller is configured to: control the formaldehyde detector to acquire the current formaldehyde content value at preset time intervals; fit multiple current formaldehyde content values ​​to form a formaldehyde release curve and arrange it in a coordinate system; calculate the area between the formaldehyde release curve and the horizontal axis of the coordinate system to obtain the formaldehyde fitting area; if the formaldehyde fitting area is greater than a first preset area and less than a second preset area, enter the first mode; if the formaldehyde fitting area is greater than the second preset area and less than a third preset area, enter the second mode; if the formaldehyde fitting area is greater than the third preset area and less than a fourth preset area, enter the third mode; if the formaldehyde fitting area is greater than the fourth preset area, enter the fourth mode. By detecting the indoor formaldehyde content value, fitting the formaldehyde release curve, and determining the formaldehyde fitting area formed by the formaldehyde release curve and the horizontal axis in the coordinate system, the controller enters different modes based on the size of this area, selecting the corresponding mode for different scenarios, thereby improving formaldehyde removal efficiency while reducing energy consumption.

[0063] In some embodiments, the preset time is set by the user, or is a factory preset or sent from the cloud.

[0064] As shown in Figures 4 to 8, in some embodiments, the first preset area is smaller than the second preset area, the second preset area is smaller than the third preset area, and the third preset area is smaller than the fourth preset area. Wherein, if the formaldehyde fitting area is smaller than the first preset area, it can be considered that the formaldehyde content is below the national standard for formaldehyde content. Therefore, it can be determined that it is harmless to the human body, and thus, when the formaldehyde fitting area is smaller than the first preset area, there is no need to activate the formaldehyde removal mode.

[0065] In some embodiments, the first preset area, the second preset area, the third preset area, and the fourth preset area are set by the user, preset by the factory, or distributed by the cloud.

[0066] In some embodiments, the first preset area, the second preset area, the third preset area, and the fourth preset area are in an arithmetic sequence.

[0067] In some embodiments, the formaldehyde release curve is calculated by fitting multiple current formaldehyde content values ​​together as y=f(x). The coordinate system is a Cartesian coordinate system, with the origin as the starting point of the formaldehyde release curve, the horizontal axis representing time, and the vertical axis representing formaldehyde concentration.

[0068] In some embodiments, the air conditioner further includes a timer. The controller is configured to: control the formaldehyde detector to detect and acquire the current formaldehyde content value at preset time intervals, and simultaneously control the timer to record the current time point. The current formaldehyde content values ​​recorded in different time periods are mapped to their respective time points and plotted in a coordinate system. Alternatively, each formaldehyde content value is first mapped to a time point and fitted to form a formaldehyde release curve, and then the formaldehyde release curve is plotted in a coordinate system.

[0069] In some embodiments, the formaldehyde fitting area is calculated by integration. The specific formula is: .

[0070] As shown in Figures 4 to 8, in some embodiments, the controller is configured to: after entering the formaldehyde removal mode, calculate the area between the formaldehyde release curve and the horizontal axis of the coordinate system to obtain the formaldehyde fitting area, then determine whether the formaldehyde fitting area is less than a first preset area. If not, determine whether the formaldehyde fitting area is less than a second preset area. If yes, enter the first mode; if no, determine whether the formaldehyde fitting area is less than a third preset area. If yes, enter the second mode; if no, determine whether the fitting area is less than a fourth preset area. If yes, enter the third mode; if no, enter the fourth mode.

[0071] Referring to Figures 9 and 10, in some embodiments, the controller is configured to: upon entering the first mode, turn on the fresh air fan; if the current formaldehyde content is lower than a first preset content value, turn off the fresh air fan and exit the first mode. Entering the first mode occurs when the formaldehyde fitting area is greater than a first preset area and less than a second preset area. In the first mode, the formaldehyde content is relatively low, so the fresh air fan introduces outdoor fresh air into the room, and air pressure forces the formaldehyde-containing air out of the room, thus achieving formaldehyde removal.

[0072] In some embodiments, the controller is configured to: in a first mode, if it is determined that the current formaldehyde content value is greater than or equal to a first preset content value, maintain the current state and continue operating; and re-determine the relationship between the current formaldehyde content value and the first preset content value at regular intervals.

[0073] In some embodiments, the specific value of the interval time is set by the user, preset by the factory, or sent from the cloud.

[0074] Referring to Figures 11 and 12, in some embodiments, the controller is configured to: upon entering the second mode, turn on the humidifier to bring the indoor humidity to a preset value; and turn on the fresh air fan and the formaldehyde removal module. The formaldehyde content in the second mode is higher than that in the first mode. Therefore, the humidifier increases the indoor humidity, taking advantage of the characteristic that formaldehyde releases faster at higher humidity to increase the formaldehyde release rate, thereby increasing the formaldehyde content in the air. The formaldehyde removal module removes the formaldehyde, and the fresh air fan expels the formaldehyde-containing air from the room.

[0075] In some embodiments, the preset humidity value is set by the user, or is a factory preset or sent from the cloud.

[0076] In some embodiments, a humidity sensor is provided inside the housing 100 to detect indoor humidity and obtain the current humidity value.

[0077] In some embodiments, the controller is configured to: upon entering the second mode, control the humidity sensor to acquire the current humidity value, determine whether the current humidity value is less than a preset humidity value, and if so, turn on the humidifier. If not, control or keep the humidifier off, and turn on the fresh air fan and formaldehyde removal module.

[0078] In some embodiments, the controller is configured to: in the second mode, if the current formaldehyde content is less than a second preset content value, enter the first mode. If the current formaldehyde content is less than the second preset content value, it means that the indoor formaldehyde content has reached a low level, so the formaldehyde removal module enters the first mode and only exhausts the indoor air containing formaldehyde through the fresh air fan, saving costs.

[0079] In some embodiments, the controller is configured to: in the second mode, if it is determined that the current formaldehyde content value is greater than or equal to a second preset content value, maintain the current state and continue operating; and re-determine the relationship between the current formaldehyde content value and the second preset content value at regular intervals.

[0080] Referring to Figures 13 and 14, in some embodiments, the controller is configured to: upon entering the third mode, control the indoor heat exchanger to function as a condenser to bring the indoor temperature to a preset value; and activate the fresh air fan and formaldehyde removal module. The formaldehyde content in the third mode is higher than in the second mode. Therefore, the indoor temperature is increased by the indoor heat exchanger, taking advantage of the characteristic that formaldehyde releases faster at higher temperatures to increase the formaldehyde release rate, thereby increasing the formaldehyde content in the air. The formaldehyde removal module is used to remove formaldehyde, and the fresh air fan is used to exhaust the formaldehyde-containing air from the room.

[0081] In some embodiments, the preset temperature value is set by the user, or is a factory preset or sent from the cloud.

[0082] In some embodiments, the housing 100 is provided with an indoor temperature sensor, which is used to detect the current indoor temperature to obtain the current indoor temperature value. The controller is configured to: after entering the third mode, control the indoor temperature sensor to obtain the current indoor temperature value, determine whether the current indoor temperature value is lower than a preset temperature value, if so, control the indoor heat exchanger to be used as a condenser; if not, control or keep the indoor heat exchanger off, and turn on the fresh air fan and formaldehyde removal module.

[0083] In some embodiments, the controller is configured to: in the third mode, if the current formaldehyde content is less than a third preset content value, enter the first mode. If the current formaldehyde content is less than the third preset content value, it means that the indoor formaldehyde content has reached a low level, so the formaldehyde removal module enters the first mode and only exhausts the indoor air containing formaldehyde through the fresh air fan, saving costs.

[0084] In some embodiments, the controller is configured to: in the third mode, if it is determined that the current formaldehyde content value is greater than or equal to a third preset content value, maintain the current state and continue operating. Furthermore, it re-evaluates the relationship between the current formaldehyde content value and the third preset content value at regular intervals.

[0085] Referring to Figures 15 to 18, in some embodiments, the controller is configured to: upon entering the fourth mode, turn on the humidifier to bring the indoor humidity to a preset value; control the indoor heat exchanger to be used as a condenser to bring the indoor temperature to a preset value; and turn on the fresh air fan and the formaldehyde removal module. The formaldehyde content is higher in the fourth mode, therefore the indoor temperature is increased by the indoor heat exchanger, the indoor humidity is increased by the humidifier, and the formaldehyde release rate is increased by utilizing the characteristic that higher temperature and humidity lead to faster formaldehyde release, thereby increasing the formaldehyde content in the air. The formaldehyde removal module is used to remove formaldehyde, and the fresh air fan is used to exhaust the formaldehyde-containing air from the room.

[0086] In some embodiments, the controller is configured to: upon entering the fourth mode, control the indoor temperature sensor to acquire the current indoor temperature value, determine whether the current indoor temperature value is lower than a preset temperature value, and if so, control the indoor heat exchanger to be used as a condenser; otherwise, control or keep the indoor heat exchanger off. Control the humidity sensor to acquire the current humidity value, determine whether the current humidity value is lower than a preset humidity value, and if so, turn on the humidifier; otherwise, control or keep the humidifier off; if both the indoor temperature value and the current humidity value are greater than the preset temperature value, turn on the fresh air fan and the formaldehyde removal module.

[0087] Referring to Figures 15 to 18, in some embodiments, the controller is configured to: in the fourth mode, if the current formaldehyde content is less than a fourth preset content value, enter the first mode. If the current formaldehyde content is less than the fourth preset content value, it means that the indoor formaldehyde content has reached a low level, so the formaldehyde removal module enters the first mode, only exhausting the indoor air containing formaldehyde through the fresh air fan, thus saving costs.

[0088] In some embodiments, the controller is configured to: in the fourth mode, if it is determined that the current formaldehyde content value is greater than or equal to a fourth preset content value, maintain the current state and continue operating. Furthermore, it re-evaluates the relationship between the current formaldehyde content value and the fourth preset content value at regular intervals.

[0089] In some embodiments, the first preset content value, the second preset content value, the third preset content value, and the fourth preset content value are set by the user, preset at the factory, or distributed by the cloud. Furthermore, the first preset content value, the second preset content value, the third preset content value, and the fourth preset content value can be the same or different.

[0090] In some embodiments, the controller is configured to: when the formaldehyde detector acquires the current formaldehyde content value at preset intervals, only when the number of current formaldehyde content values ​​exceeds a preset number, fit multiple current formaldehyde content values ​​to form a formaldehyde release curve and configure it in a coordinate system. When the number of current formaldehyde content values ​​exceeds the preset number, the fitted formaldehyde release curve will be more accurate, thereby improving precision and ensuring accurate entry into the corresponding mode.

[0091] In some embodiments, when fitting to form a formaldehyde release curve, a correlation coefficient R is used. 2 When R 2 When R = 1, it means that the current formaldehyde content value can form a complete formaldehyde release curve. When performing the fitting, R... 2 Fitting only begins when the value is greater than 0.98.

[0092] In some embodiments, the formaldehyde removal module includes an adsorption material and an activated carbon layer, which adsorbs formaldehyde from the air to reduce the formaldehyde content. The adsorption material includes, but is not limited to, activated carbon.

[0093] In some embodiments, the formaldehyde removal module includes chemical agents, such as those obtained through a chemical reaction using potassium permanganate. Alternatively, it may utilize consumable modules such as catalytic oxidation technology. The specific form of these modules is not the focus of this application and will not be elaborated upon here.

[0094] In some embodiments, when calculating the area between the formaldehyde release curve and the horizontal axis of the coordinate system to obtain the formaldehyde fitting area, the left end of the formaldehyde release curve is located at the origin of the coordinate system. The vertical axis of the coordinate system is the Y-axis, and the horizontal axis is the X-axis. An auxiliary line segment is drawn downwards from the right end of the formaldehyde release curve. This auxiliary line segment is parallel to the Y-axis, and the end of the auxiliary line segment furthest from the formaldehyde release curve connects to the X-axis. The area formed by the formaldehyde release curve, the auxiliary line segment, and the X-axis is the formaldehyde fitting area.

[0095] In some embodiments, the horizontal axis represents time and the vertical axis represents formaldehyde content in the coordinate system.

[0096] In some embodiments, formaldehyde release curves can predict future changes in indoor formaldehyde levels. Therefore, formaldehyde release curves do not necessarily represent the current formaldehyde level that has already been measured. By using formaldehyde release curves to predict future changes in formaldehyde levels, the air conditioner can be pre-programmed to enter the corresponding first, second, third, or fourth mode.

[0097] In some embodiments, the air conditioner further includes an outdoor unit 200, an outdoor heat exchanger is provided inside the outdoor unit 200, and refrigerant flows between the outdoor heat exchanger and the indoor heat exchanger to complete heat exchange.

[0098] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An air conditioner, characterized in that, It includes: The housing has a heat exchange air outlet and a fresh air outlet; the heat exchange fan is disposed inside the housing and is used to deliver air conditioning air to the room through the heat exchange air outlet. An indoor heat exchanger, through which refrigerant flows and exchanges heat with air to form a heating or cooling cycle; a humidifier, located within the housing, for increasing indoor humidity; a fresh air fan, also located within the housing, for delivering fresh outdoor air into the room through a fresh air outlet; a formaldehyde removal module, located within the housing, for removing formaldehyde; a formaldehyde detector for detecting indoor formaldehyde to obtain the current formaldehyde content value; and a controller configured to: control the formaldehyde detector to obtain the current formaldehyde content value at preset intervals; fit multiple current formaldehyde content values ​​to form a formaldehyde release curve and configure it in a coordinate system; calculate the area between the formaldehyde release curve and the horizontal axis of the coordinate system to obtain the formaldehyde fitting area; if the formaldehyde fitting area is greater than a first preset area and less than a second preset area, enter a first mode; if the formaldehyde fitting area is greater than a second preset area and less than a third preset area, enter a second mode. If the formaldehyde fitting area is greater than the third preset area and less than the fourth preset area, enter the third mode; if the formaldehyde fitting area is greater than the fourth preset area, enter the fourth mode; after entering the first mode, turn on the fresh air fan; if the current formaldehyde content is lower than the first preset content value, turn off the fresh air fan and exit the first mode; after entering the second mode, turn on the humidifier to make the indoor humidity reach the preset value; turn on the fresh air fan and the formaldehyde removal module. After entering the third mode, the indoor heat exchanger is controlled to be used as a condenser so that the indoor temperature reaches the preset temperature value; Turn on the fresh air fan and the formaldehyde removal module; After entering the fourth mode, turn on the humidifier to bring the indoor humidity to the preset value; control the indoor heat exchanger to be used as a condenser to bring the indoor temperature to the preset temperature value. Turn on the fresh air fan and the formaldehyde removal module.

2. The air conditioner according to claim 1, characterized in that, The controller is configured to: in the second mode, if the current formaldehyde content value is less than the second preset content value, enter the first mode.

3. The air conditioner according to claim 1, characterized in that, The controller is configured to: in the third mode, if the current formaldehyde content value is less than the third preset content value, enter the first mode.

4. The air conditioner according to claim 1, characterized in that, The controller is configured to: in the fourth mode, if the current formaldehyde content value is less than the fourth preset content value, enter the first mode.

5. The air conditioner according to claim 1, characterized in that, The controller is configured to: when the formaldehyde detector acquires the current formaldehyde content value at preset intervals, only when the number of current formaldehyde content values ​​is greater than a preset number, fit multiple current formaldehyde content values ​​to form a formaldehyde release curve and configure it in a coordinate system.

6. The air conditioner according to claim 1, characterized in that, The formaldehyde removal module includes an activated carbon layer, which adsorbs formaldehyde.

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