Air conditioner indoor unit

Abstract

The application discloses an air conditioner indoor unit, comprising: a shell provided with an air inlet, a humidifying air outlet and an air conditioner air outlet; a steam generation module, steam generated through the steam generation module forms humidifying gas; a heat exchanger for heat exchange with gas in an air duct; a first sensor for detecting indoor environment humidity; a controller, when receiving a steam washing air function opening signal, controls the steam generation module to generate steam; if the absolute value of the difference between the indoor environment humidity and the preset humidity is not greater than a first preset difference value, or if the absolute value of the difference between the indoor environment humidity and the preset humidity is greater than the first preset difference value and the indoor environment humidity is less than the preset humidity, the humidifying air outlet is opened; if the absolute value of the difference between the indoor environment humidity and the preset humidity is greater than the first preset difference value and the indoor environment humidity is greater than the preset humidity, the air conditioner air outlet is opened. The air conditioner indoor unit according to the embodiment of the application judges whether to humidify or dehumidify the indoor environment according to the indoor environment humidity.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to an indoor unit of an air conditioner. Background Technology

[0002] People's attention to air conditioners has expanded beyond just the conventional functions of cooling and heating; they are now focusing on features that excite consumers, such as environmental protection, health, and comfort. People are increasingly concerned about the health of their living environment. Air is rich in various impurities, such as dust, particles, and lint, which enter the lungs through respiration, posing certain health risks. People yearn to breathe fresh, clean air.

[0003] Currently, air conditioners advertised as being able to "wash" the air actually achieve their purification function through a water curtain. However, the purification effect is poor, and impurities in the air accumulate in the water tank, leading to bacterial and mold growth and secondary pollution. Furthermore, using contaminated water from the tank for humidification poses safety risks. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an indoor unit of an air conditioner that can not only sterilize and remove dust from the air outlet, but also determine whether to perform humidification or dehumidification based on the indoor humidity, thereby ensuring that the indoor humidity is always within a comfortable range.

[0005] To achieve the above objectives, an indoor unit of an air conditioner is provided according to an embodiment of the present invention, comprising: a housing having an air inlet, a humidifying air outlet, an air conditioning air outlet, and an air duct, the air duct being connected to the air inlet, the humidifying air outlet, and the air conditioning air outlet respectively; a steam generating module installed in the housing for generating steam, wherein gas in the air duct is humidified gas by passing through the steam generated by the steam generating module; a heat exchanger installed in the air duct for exchanging heat with the gas in the air duct; a first sensor installed in the housing for detecting indoor ambient humidity; and a controller installed in the housing and connected to the steam generating module, the heat exchanger, and the first sensor respectively; the controller is configured to, upon receiving a signal indicating that the steam air washing function is activated, control the steam generating module to generate steam and acquire the humidity detected by the first sensor. Indoor ambient humidity; if the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than a first preset difference, then the humidifying air outlet is opened and the air conditioning air outlet is closed, so that the humidified gas enters the room through the humidifying air outlet; if the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is less than the preset humidity, then the humidifying air outlet is opened and the air conditioning air outlet is closed, so that the humidifying gas enters the room through the humidifying air outlet; if the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is greater than the preset humidity, then the air conditioning air outlet is opened and the humidifying air outlet is closed, the humidifying gas exchanges heat with the heat exchanger to form dry gas, and the dry gas enters the room through the air conditioning air outlet.

[0006] According to embodiments of the present invention, the indoor unit of the air conditioner can not only sterilize and remove dust from the air outlet, but also determine whether to humidify or dehumidify the indoor environment based on the indoor humidity, thereby ensuring that the indoor humidity remains within a comfortable range.

[0007] According to some embodiments of the present invention, when the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than the first preset difference, the steam generating module operates at a first power; when the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is less than the preset humidity, the steam generating module operates at a second power; when the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is greater than the preset humidity, the steam generating module operates at a third power; wherein, the first power is less than the third power, and the second power is less than the third power.

[0008] According to some embodiments of the present invention, the humidifying air outlet and the air conditioning air outlet are located on the front side of the housing, and the humidifying air outlet is located below the air conditioning air outlet; the steam generating module has a first outlet and a second outlet, the first outlet is located on the front side of the steam generating module and corresponds to the position of the humidifying air outlet, and the second outlet is located on the upper side of the steam generating module; wherein, if the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than the first preset difference, or if the indoor ambient humidity is less than the preset humidity, the humidifying gas flows to the humidifying air outlet through the first outlet; if the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, the humidifying gas flows to the heat exchanger through the second outlet to form the dry gas, and the dry gas flows to the air conditioning air outlet.

[0009] According to some embodiments of the present invention, the indoor unit of the air conditioner further includes: a first baffle and a second baffle, the first baffle and the second baffle being movably installed on the steam generating module, the first baffle being used to block the first outlet, and the second baffle being used to block the second outlet; wherein, when the indoor unit of the air conditioner is turned off, the first baffle blocks the first outlet.

[0010] According to some embodiments of the present invention, the indoor unit of the air conditioner further includes: a fresh air fan installed in the air duct, the air inlet including a separate fresh air inlet and an indoor air inlet; a second sensor installed in the housing and connected to the controller for detecting indoor ambient temperature; and a third sensor connected to the controller for detecting outdoor ambient temperature. The controller is configured to, upon receiving a signal indicating that the steam air washing function is activated, acquire the indoor ambient temperature detected by the second sensor and the outdoor ambient temperature detected by the third sensor; if the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is not less than a second preset difference, then close the fresh air inlet and open the indoor air inlet; if the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is not greater than a third preset difference, then open the fresh air inlet and close the indoor air inlet, the third preset difference being less than the second preset difference; if the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset difference and greater than the third preset difference, then open both the fresh air inlet and the indoor air inlet.

[0011] According to some embodiments of the present invention, if the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is not less than the second preset value difference, the fresh air fan rotates at a first speed; if the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is not greater than the third preset value difference, the fresh air fan rotates at a second speed; if the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset value difference and greater than the third preset value, the fresh air fan rotates at a third speed; wherein the first speed, the second speed, and the third speed decrease sequentially.

[0012] According to some embodiments of the present invention, the second preset difference value of the indoor unit of the air conditioner in cooling mode is less than the second preset difference value of the indoor unit of the air conditioner in heating mode; and / or the third preset difference value of the indoor unit of the air conditioner in cooling mode is less than the third preset difference value of the indoor unit of the air conditioner in heating mode.

[0013] According to some embodiments of the present invention, the indoor unit of the air conditioner further includes: a third baffle, the third baffle being rotatably mounted on the housing between a third position, a fourth position and a fifth position, wherein when the second baffle is in the third position, it blocks the fresh air inlet and exposes the indoor air inlet; when the baffle is in the fourth position, it blocks the indoor air inlet and exposes the fresh air inlet; and when the baffle is in the fifth position, it exposes both the indoor air inlet and the fresh air inlet.

[0014] According to some embodiments of the present invention, when the indoor unit of the air conditioner is turned off, the baffle is in the third position.

[0015] According to some embodiments of the present invention, the preset humidity of the indoor unit of the air conditioner in cooling mode is lower than the preset humidity of the indoor unit of the air conditioner in heating mode.

[0016] 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

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a flowchart of a humidity control method for an indoor unit of an air conditioner according to an embodiment of the present invention.

[0019] Figure 2 This is a flowchart of a method for controlling the fresh air and indoor air of an air conditioner indoor unit according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of an indoor unit of an air conditioner according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the steam generation module, air duct, and fresh air fan of an indoor unit of an air conditioner according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram showing that the humidification air outlet and the air conditioning air outlet of the steam generation module of the indoor unit of an air conditioner are both open, according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the indoor air outlet of the steam generating module of the indoor unit of an air conditioner being open and the humidification air outlet being closed, according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the indoor air outlet of the steam generating module of the indoor unit of an air conditioner according to an embodiment of the present invention being closed and the humidification air outlet being open.

[0025] Figure 8 This is a schematic diagram of an indoor air inlet and a fresh air inlet of an air conditioner indoor unit according to an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of an indoor air inlet and a fresh air inlet of an air conditioner indoor unit according to an embodiment of the present invention.

[0027] Figure 10 This is a schematic diagram showing that both the indoor air inlet and the fresh air inlet of the indoor unit of an air conditioner are open, according to an embodiment of the present invention.

[0028] Figure label:

[0029] Air conditioner indoor unit 1

[0030] Housing 100, air inlet 110, indoor air inlet 111, fresh air inlet 112, humidifier air outlet 120, air conditioning air outlet 130, air duct 140.

[0031] Steam generator module 200, first outlet 210, second outlet 220, first baffle 300, second baffle 400, fresh air fan 500, third baffle 600. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0033] 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 do not 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.

[0034] In the description of this invention, "a plurality of" means two or more.

[0035] The indoor unit 1 of an air conditioner according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0036] like Figures 1-10 As shown in the figure, according to an embodiment of the present invention, an indoor unit 1 of an air conditioner includes a housing 100, a steam generating module 200, a heat exchanger, a first sensor, and a controller.

[0037] The housing 100 is provided with an air inlet 110, a humidifying air outlet 120, an air conditioning air outlet 130, and an air duct 140, which are connected to the air inlet 110, the humidifying air outlet, and the air conditioning air outlet 130, respectively. A steam generating module 200 is installed inside the housing 100 and is used to generate steam. The gas in the air duct 140 is humidified by the steam generated by the steam generating module 200. A heat exchanger is installed inside the air duct 140 and is used to exchange heat with the gas in the air duct 140. A first sensor is installed in the housing 100 and is used to detect the indoor humidity. A controller is installed inside the housing 100 and is connected to the steam generating module 200, the heat exchanger, and the first sensor, respectively.

[0038] The controller is configured to control the steam generator module 200 to generate steam and acquire the indoor ambient humidity detected by the first sensor when it receives a signal to activate the steam air washing function.

[0039] If the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than the first preset difference, the humidifier air outlet 120 is opened and the air conditioner air outlet 130 is closed, so that the humidified gas enters the room through the humidifier air outlet 120; if the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is less than the preset humidity, the humidifier air outlet 120 is opened and the air conditioner air outlet 130 is closed, so that the humidified gas enters the room through the humidifier air outlet 120; if the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is greater than the preset humidity, the air conditioner air outlet 130 is opened and the humidifier air outlet 120 is closed, the humidified gas exchanges heat with the heat exchanger to form dry gas, and the dry gas enters the room through the air conditioner air outlet 130.

[0040] In other words, the control method for indoor unit 1 of the air conditioner is as follows:

[0041] Received signal to activate steam air cleaning function;

[0042] The steam generating module 200 is controlled to generate steam and acquire the indoor ambient humidity detected by the first sensor;

[0043] Determine whether the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than the first preset difference.

[0044] If so, open the humidifier air outlet 120 and close the air conditioner air outlet 130 so that the humidified gas can enter the room through the humidifier air outlet 120;

[0045] If not, determine whether the indoor humidity is lower than the preset humidity.

[0046] If so, open the humidifier air outlet 120 and close the air conditioner air outlet 130 so that the humidified gas can enter the room through the humidifier air outlet 120;

[0047] If not, open the air conditioner air outlet 130 and close the humidifier air outlet 120. The humidified gas exchanges heat with the heat exchanger to form dry gas, which enters the room through the air conditioner air outlet 130.

[0048] For example, the indoor unit 1 of the air conditioner can be a wall-mounted air conditioner indoor unit or a floor-standing air conditioner indoor unit.

[0049] According to an embodiment of the present invention, the indoor unit 1 of an air conditioner has an air inlet 110, a humidifying air outlet 120, an air conditioning air outlet 130, and an air duct 140 constructed on a housing 100. The air duct 140 is connected to the air inlet 110, the humidifying air outlet, and the air conditioning air outlet 130, respectively. A steam generating module 200 is installed inside the housing 100 to generate steam, and the gas in the air duct 140 is humidified by the steam generated by the steam generating module 200. A heat exchanger is installed inside the air duct 140 to exchange heat with the gas in the air duct 140.

[0050] The indoor unit 1 of the air conditioner may be equipped with a cross-flow fan. When the indoor unit 1 of the air conditioner is in cooling mode, heating mode or air supply mode, the cross-flow fan can operate to introduce indoor air into the casing 100 from the air inlet 110. It guides the indoor air to exchange heat with the heat exchanger to form heat exchange gas, and then guides the heat exchange gas back into the room from the air conditioner air outlet 130, thereby changing the indoor temperature.

[0051] By setting up a steam generating module 200, when the steam generating module 200 is turned on, it can generate high-temperature steam. When the high-temperature steam comes into contact with the gas in the air duct 140, it can kill microorganisms in the gas in the air duct 140 and increase the humidity of the gas in the air duct 140. This causes dust and other impurities in the gas in the air duct 140 to combine with the steam and become heavier, so that they fall under the action of gravity and will not enter the room. This improves the cleanliness of the gas in the air duct 140, making the air output of the indoor unit 1 of the air conditioner cleaner and safer.

[0052] Additionally, a first sensor is installed in housing 100 to detect indoor humidity. A controller is installed inside housing 100 and connected to the steam generating module 200, the heat exchanger, and the first sensor. The controller is configured to, upon receiving a signal indicating that the steam air washing function is activated, control the steam generating module 200 to generate steam and acquire the indoor humidity detected by the first sensor.

[0053] If the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than the first preset difference, then the humidifier air outlet 120 is opened and the air conditioner air outlet 130 is closed, so that the humidified gas enters the room through the humidifier air outlet 120. In other words, at this time, the steam generator module 200 can generate high-temperature steam, and the gas in the air duct 140 mixes with the steam generated by the steam generator module 200 to form humidified gas. The humidified gas has a low content of microorganisms and dust and other impurities, making it cleaner. At this time, the humidified gas can directly enter the room without turning on the heat exchanger, thus reducing energy consumption while ensuring gas cleanliness.

[0054] If the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is less than the preset humidity, then the humidifier air outlet 120 is opened and the air conditioner air outlet 130 is closed, so that the humidified gas enters the room through the humidifier air outlet 120. In other words, if the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than the first preset difference, it means that the indoor ambient humidity is low, and the steam generating module 200 can generate high-temperature steam. The gas in the air duct 140 mixes with the steam generated by the steam generating module 200 to form humidified gas. Therefore, by opening the humidifier air outlet 120 and closing the air conditioner air outlet 130, the humidified gas can directly enter the room from the humidifier air outlet 120. The humidified gas has a higher water content, so it can humidify the room after entering, ensuring the cleanliness of the air outlet while keeping the indoor ambient humidity at a suitable level for the user.

[0055] If the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is greater than the preset humidity, then the air conditioner air outlet 130 is opened and the humidifier air outlet 120 is closed. The humidified gas exchanges heat with the heat exchanger to form dry gas, and the dry gas enters the room through the air conditioner air outlet 130. In other words, if the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is greater than the preset humidity, it means that the indoor ambient humidity is high. Therefore, the air conditioner air outlet 130 is opened and the humidifier air outlet 120 is closed. The gas in the air duct 140 mixes with the steam generated by the steam generation module 200 to form humidified gas. The humidified gas then passes through the heat exchanger, which can act as an evaporator. The temperature of the humidified gas is relatively high, so condensate will be released after the humidified gas exchanges heat with the heat exchanger, thereby reducing the humidity of the humidified gas and turning it into dry gas. When the dry gas with low water content enters the room from the air conditioner air outlet 130, it can reduce the indoor ambient humidity. The room is dehumidified, ensuring the cleanliness of the air outlet while keeping the indoor ambient humidity at a suitable level for the user.

[0056] Thus, the indoor unit 1 of the air conditioner according to the embodiment of the present invention can not only sterilize and remove dust from the air outlet, but also determine whether to humidify or dehumidify the indoor environment based on the indoor humidity, so that the indoor humidity is always within a comfortable range.

[0057] According to some specific embodiments of the present invention, such as Figure 1As shown, when the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than a first preset difference, the steam generating module 200 operates at a first power; when the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is greater than the preset humidity, the steam generating module 200 operates at a second power; when the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is less than the preset humidity, the steam generating module 200 operates at a third power. Wherein, the first power is less than the third power, and the second power is less than the third power.

[0058] For example, the first power and the second power can be the same, in which case the control logic of the indoor unit 1 of the air conditioner is simpler; of course, the first power and the second power can be different, in which case the control logic of the indoor unit 1 of the air conditioner is more refined and can improve the reliability of control.

[0059] When the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than the first preset difference, the indoor ambient humidity is in the comfortable range. The steam generating module 200 operates at the first power. Since the first power is relatively small, it can not only generate water mist to improve the cleanliness of the air outlet of the indoor unit 1 of the air conditioner, but also ensure that the humidification amount is not large and has little impact on the indoor ambient humidity, thus ensuring that the indoor ambient humidity continues to be in the comfortable range.

[0060] When the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is greater than the preset humidity, and the indoor ambient humidity is less than the preset humidity, it indicates that the indoor ambient humidity is low and humidification is required. The steam generating module 200 operates at the third power. Because the third power is relatively high, the steam generating module 200 can generate a large amount of water mist, so that the air outlet of the indoor unit 1 of the air conditioner carries more moisture. At the same time, the water mist generated by the high power of the third power carries high temperature, which can ensure high-temperature disinfection of the air outlet of the indoor unit 1 of the air conditioner and improve the cleanliness of the indoor air.

[0061] When the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, and the indoor ambient humidity is greater than the preset humidity, it indicates that the indoor ambient humidity is high. Therefore, the steam generating module 200 will operate at the second power. Since the power of the second power is smaller, it can reduce the amount of steam generated by the steam generating module 200 and reduce the humidity of the humidified gas mixed with the steam generating module 200.

[0062] In summary, by changing the power of the steam generator module 200, the indoor humidity can be adjusted under different environments, thus better controlling the indoor humidity.

[0063] According to some specific embodiments of the present invention, such as Figure 3, Figures 5-7 As shown, the humidifying air outlet 120 and the air conditioning air outlet 130 are located on the front side of the housing 100, and the humidifying air outlet 120 is located below the air conditioning air outlet 130. The steam generating module 200 has a first outlet 210 and a second outlet 220. The first outlet 210 is located on the front side of the steam generating module 200 and corresponds to the position of the humidifying air outlet 120. The second outlet 220 is located on the upper side of the steam generating module 200.

[0064] If the absolute value of the difference between the indoor ambient humidity and the preset humidity is not greater than the first preset difference, or if the indoor ambient humidity is less than the preset humidity, the humidifying gas flows through the first outlet 210 to the humidifying air outlet 120; if the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference, the humidifying gas flows through the second outlet 220 to the heat exchanger to form dry gas, and the dry gas flows to the air conditioning air outlet 130.

[0065] For example, the heat exchanger can be located above the steam generating module 200. Furthermore, the gas in the duct 140 can flow to the steam generating module 200, and then through the first outlet 210 of the steam generating module 200 to the humidification outlet 120, or through the second outlet 220 of the steam generating module 200 to the air conditioning outlet 130.

[0066] By placing the humidifying air outlet 120 and the air conditioning air outlet 130 on the front side of the casing 100, it is convenient to supply air to the room. The air supply area of ​​the indoor unit 1 of the air conditioner is also relatively large. When the indoor unit 1 of the air conditioner is in cooling mode or heating mode, the air conditioning air can be discharged from the air conditioning air outlet 130. In this way, the air conditioning air outlet 130 is reused, and the setting of the humidifying air outlet 120 does not affect the arrangement of the air conditioning air outlet 130. Since the humidifying air outlet 120 is located below the air conditioning air outlet 130, the height of the air conditioning air outlet 130 is relatively high, and the air supply area of ​​the indoor unit 1 of the air conditioner is larger.

[0067] According to some specific embodiments of the present invention, such as Figures 5-7 As shown, the indoor unit 1 of the air conditioner also includes a first baffle 300 and a second baffle 400.

[0068] The first baffle 300 and the second baffle 400 are movably installed on the steam generating module 200. The first baffle 300 is used to block the first outlet 210, and the second baffle 400 is used to block the second outlet 220. When the indoor unit 1 of the air conditioner is turned off, the first baffle 300 blocks the first outlet 210.

[0069] For example, the indoor unit 1 of the air conditioner may be equipped with a motor connected to the first baffle 300 and the second baffle 400. The motor drives the first baffle 300 and the second baffle 400 to move. The first baffle 300 and the second baffle 400 may be connected to the same motor to reduce costs, or the first baffle 300 and the second baffle 400 may be connected to a motor respectively to improve control accuracy.

[0070] Because the humidifier outlet 120 is relatively low, it is easily touched by children or allowed to become contaminated with debris when open. Therefore, when the indoor unit 1 is turned off, the first outlet 210 needs to be closed to keep the lower part of the indoor unit 1 largely enclosed, preventing children from accidentally touching it or allowing debris to enter, thus improving safety. Furthermore, the air conditioner outlet 130 is relatively high, and the second outlet 220 is located on the upper side of the steam generating module 200, making it less likely for children to accidentally touch it or for debris to enter.

[0071] According to some specific embodiments of the present invention, such as Figure 4 , Figures 8-10 As shown, the indoor unit 1 of the air conditioner also includes a fresh air fan 500, a second sensor, and a third sensor.

[0072] The fresh air fan 500 is installed inside the air duct 140, and the air inlet 110 includes a separate fresh air inlet 112 and an indoor air inlet 111. A second sensor is installed in the housing 100 and connected to the controller to detect the indoor ambient temperature. A third sensor is connected to the controller to detect the outdoor ambient temperature. The third sensor can be installed in the outdoor unit of the air conditioner.

[0073] For example, the fresh air inlet 112 and the indoor air inlet 111 can be arranged circumferentially along the housing 100. The fresh air inlet 112 and the indoor air inlet 111 can be spaced apart, or a partition can be provided between the fresh air inlet 112 and the indoor air inlet 111 to separate them. Furthermore, the fresh air inlet 112 can be connected to the outdoor space through a duct.

[0074] The controller is configured to, upon receiving a signal indicating that the steam air cleaning function is activated, acquire the indoor ambient temperature detected by a second sensor and the outdoor ambient temperature detected by a third sensor. Specifically, if the absolute value of the difference between the indoor and outdoor ambient temperatures is not less than a second preset difference, then the fresh air inlet 112 is closed and the indoor air inlet 111 is opened; if the absolute value of the difference between the indoor and outdoor ambient temperatures is not greater than a third preset difference, then the fresh air inlet 112 is opened and the indoor air inlet 111 is closed, provided the third preset difference is less than the second preset difference; if the absolute value of the difference between the indoor and outdoor ambient temperatures is less than the second preset difference but greater than the third preset difference, then both the fresh air inlet 112 and the indoor air inlet 111 are opened.

[0075] When the absolute value of the difference between indoor and outdoor ambient temperatures is not less than the second preset difference, it indicates that the difference between indoor and outdoor ambient temperatures is large. If the fresh air inlet 112 is turned on at this time, if the outdoor ambient temperature is higher than the indoor ambient temperature, the outdoor air entering the room will greatly increase the indoor ambient temperature. If the outdoor ambient temperature is lower than the indoor ambient temperature, the outdoor air entering the room will greatly decrease the indoor ambient temperature. In other words, the entry of outdoor air into the room will seriously affect the balance of indoor ambient temperature and the user's thermal comfort. Therefore, when the indoor air inlet 111 is turned on, only indoor air is circulated to avoid introducing outdoor air and avoid causing drastic fluctuations in indoor ambient temperature, resulting in higher user thermal comfort.

[0076] When the absolute value of the difference between indoor and outdoor ambient temperatures is less than the second preset value but greater than the third preset value, it indicates that the difference between indoor and outdoor ambient temperatures is relatively large. At this time, outdoor air entering the room will have a certain impact on the indoor ambient temperature, but it will not excessively affect the user experience. Therefore, the fresh air inlet 112 can be turned on to mix the indoor ambient air with the outdoor ambient air, neutralize the temperature of the outdoor ambient air, and change the proportion of indoor air composition while ensuring temperature comfort.

[0077] When the absolute value of the difference between indoor and outdoor ambient temperatures is not greater than the third preset difference, it indicates that the difference between indoor and outdoor ambient temperatures is small. At this time, the impact of outdoor air entering the room on the indoor ambient temperature is small. Therefore, the fresh air inlet 112 can be turned on to introduce outdoor ambient air to change the composition ratio of indoor ambient gases, that is, to increase the indoor oxygen concentration and decrease the indoor carbon dioxide concentration, so that the indoor gases are more suitable for human activities.

[0078] According to some specific embodiments of the present invention, such as Figures 8-10As shown, if the absolute value of the difference between the indoor and outdoor ambient temperatures is not less than the second preset value difference, the fresh air fan 500 rotates at a first speed; if the absolute value of the difference between the indoor and outdoor ambient temperatures is less than the second preset value difference but greater than the third preset value, the fresh air fan 500 rotates at a second speed; if the absolute value of the difference between the indoor and outdoor ambient temperatures is not greater than the third preset value difference, the fresh air fan 500 rotates at a third speed. The first, second, and third speeds decrease sequentially.

[0079] In this way, when the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is not less than the second preset value difference, the speed of the fresh air fan 500 is the maximum, the air intake volume inside the casing 100 is greater, and the air intake volume of the indoor unit 1 of the air conditioner is increased.

[0080] When the absolute value of the difference between indoor and outdoor ambient temperatures is less than the second preset value but greater than the third preset value, the speed of the fresh air fan 500 is minimized to ensure sufficient mixing of outdoor and indoor air and better uniformity of airflow.

[0081] When the absolute value of the difference between the indoor and outdoor ambient temperatures is no greater than the third preset value, the speed of the fresh air fan 500 can be in an intermediate state. This intermediate state does not mean the speed of the fresh air fan 500 is the midpoint between its maximum and minimum speeds; rather, it means the speed can be any value between the maximum and minimum speeds. Therefore, when the speed of the fresh air fan 500 is in an intermediate state, it is appropriately lower than its maximum speed to reduce the amount of outdoor air entering the casing 100, thereby reducing the impact of fresh air on indoor thermal comfort and ensuring the comfort of the user's environment.

[0082] In summary, by changing the speed of the fresh air fan 500 and the opening and closing of the indoor air inlet 111 and the fresh air inlet 112, the indoor ambient temperature and the composition ratio of indoor gases can be better controlled.

[0083] According to some specific embodiments of the present invention, such as Figure 2 As shown, the second preset difference when the indoor unit 1 of the air conditioner is in cooling mode is less than the second preset difference when the indoor unit 1 of the air conditioner is in heating mode.

[0084] According to some specific embodiments of the present invention, such as Figure 2 As shown, the third preset difference when the indoor unit 1 of the air conditioner is in cooling mode is less than the third preset difference when the indoor unit 1 of the air conditioner is in heating mode.

[0085] Normally, in autumn and winter, users will control the indoor unit 1 of the air conditioner to enter the heating mode, and in summer, users will control the indoor unit 1 of the air conditioner to enter the cooling mode. Therefore, when the indoor unit 1 of the air conditioner is in the heating mode, the season is usually autumn or winter.

[0086] In autumn or winter, the outdoor air is cold while the indoor air is warm. Since the human body is more sensitive to cold air, the second preset difference when the indoor unit 1 of the air conditioner is in cooling mode is less than the second preset difference when the indoor unit 1 of the air conditioner is in heating mode, and the third preset difference when the indoor unit 1 of the air conditioner is in cooling mode is less than the third preset difference when the indoor unit 1 of the air conditioner is in heating mode. This reduces the probability of the fresh air inlet 112 being opened and increases the probability of the indoor air inlet 111 being opened. The indoor ambient temperature in winter is kept at a lower temperature than the indoor ambient temperature in summer. For example, the most suitable temperature for the human body in summer is 23℃~28℃, and the most suitable temperature for the human body in winter is 18℃~25℃. This ensures that the indoor ambient temperature is more reliably in a comfortable environment for users in autumn or winter, thus improving the comfort of the indoor environment.

[0087] According to some specific embodiments of the present invention, such as Figures 8-10 As shown, the indoor unit 1 of the air conditioner also includes a third baffle 600.

[0088] The third baffle 600 is rotatably mounted on the housing 100 between the third, fourth and fifth positions. When the second baffle is in the third position, it blocks the fresh air inlet 112 and exposes the indoor air inlet 111. When the baffle is in the fourth position, it blocks the indoor air inlet 111 and exposes the fresh air inlet 112. When the baffle is in the fifth position, it exposes both the indoor air inlet 111 and the fresh air inlet 112.

[0089] For example, the indoor unit 1 of the air conditioner may be equipped with a motor connected to the third baffle 600, which drives the third baffle 600 to rotate between the third, fourth, and fifth positions. Furthermore, the heights of the fresh air inlet 112 and the indoor air inlet 111 may be the same, thus facilitating the third baffle 600 to block either the fresh air inlet 112 or the indoor air inlet 111.

[0090] In addition, the fresh air inlet 112 and the indoor air inlet 111 can be located on the rear side of the casing 100. This makes it less likely for users to see the fresh air inlet 112 and the indoor air inlet 111, thus improving the aesthetics of the indoor unit 1. Furthermore, the distance between the fresh air inlet 112 and the indoor wall is smaller, which makes it easier for the pipe connected to the fresh air inlet 112 to extend into the room, so as to connect the fresh air inlet 112 with the outdoor space. This results in the indoor unit 1 occupying less indoor space.

[0091] In this way, while ensuring a simple structure, the indoor unit 1 of the air conditioner can easily adjust the air intake type, thus improving the ease of use of the indoor unit 1.

[0092] According to some specific embodiments of the present invention, such as Figures 8-10 As shown, when the indoor unit 1 of the air conditioner is turned off, the baffle is in the third position. That is to say, when the indoor unit 1 of the air conditioner is turned off, the third baffle 600 blocks the fresh air inlet 112. In this way, when the indoor unit 1 of the air conditioner is not in use, outdoor air cannot enter the casing 100 through the fresh air inlet 112, thereby avoiding the backflow noise of fresh air, reducing the noise of the indoor unit 1 of the air conditioner, and improving the comfort of use.

[0093] According to some specific embodiments of the present invention, the preset humidity of the indoor unit 1 of the air conditioner in cooling mode is lower than the preset humidity of the indoor unit 1 of the air conditioner in heating mode.

[0094] Normally, in autumn or winter, users will control the indoor unit 1 of the air conditioner to be in heating mode, and in summer, users will control the indoor unit 1 of the air conditioner to be in cooling mode. Therefore, when the indoor unit 1 of the air conditioner is in heating mode, the season is usually autumn or winter.

[0095] Since the human body has a higher humidity requirement in winter than in summer, the preset humidity of indoor unit 1 in cooling mode is lower than the preset humidity of indoor unit 1 in heating mode. In this way, the indoor humidity can be maintained at a higher level in winter. For example, the most suitable humidity for the human body in summer is 30%~60%, while the most suitable humidity for the human body in winter is 40%~80%. In winter, the indoor humidity is more in line with the user's needs, so that the user is in a comfortable environment and has a more comfortable experience.

[0096] Other configurations and operations of the indoor unit 1 of the air conditioner according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0097] The indoor unit 1 of the air conditioner in this application performs a refrigeration cycle by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0098] The compressor compresses refrigerant gas under high temperature and pressure 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.

[0099] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the indoor unit 1 of the air conditioner regulates the temperature and humidity of the indoor space.

[0100] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0101] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner indoor unit, characterized by comprising: The air conditioner comprises: a shell provided with an air inlet, a humidifying air outlet, an air conditioner air outlet and an air duct, the air duct being in communication with the air inlet, the humidifying air outlet and the air conditioner air outlet respectively; a steam generating module installed in the shell for generating steam, the steam generated by the steam generating module forming humidified air with air in the air duct; a heat exchanger installed in the air duct for heat exchange with air in the air duct; a first sensor installed in the shell for detecting indoor ambient humidity; a controller installed in the shell and connected with the steam generating module, the heat exchanger and the first sensor respectively; the controller being configured to, when receiving a steam washing air function opening signal, control the steam generating module to generate steam, and obtain the indoor ambient humidity detected by the first sensor; if the absolute value of the difference between the indoor ambient humidity and a preset humidity is not greater than a first preset difference value, the humidifying air outlet is opened and the air conditioner air outlet is closed, so that the humidified air enters the indoor environment through the humidifying air outlet; if the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference value, and the indoor ambient humidity is less than the preset humidity, the humidifying air outlet is opened and the air conditioner air outlet is closed, so that the humidified air enters the indoor environment through the humidifying air outlet; if the absolute value of the difference between the indoor ambient humidity and the preset humidity is greater than the first preset difference value, and the indoor ambient humidity is greater than the preset humidity, the air conditioner air outlet is opened and the humidifying air outlet is closed, the humidified air exchanges heat with the heat exchanger to form dry air, and the dry air enters the indoor environment through the air conditioner air outlet; a fresh air fan installed in the air duct, the air inlet comprising a fresh air inlet and an indoor air inlet separated from each other; a second sensor installed in the shell and connected with the controller for detecting indoor ambient temperature; a third sensor connected with the controller for detecting outdoor ambient temperature; wherein the controller is configured to, when receiving a steam washing air function opening signal, obtain the indoor ambient temperature detected by the second sensor and the outdoor ambient temperature detected by the third sensor; if the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is not less than a second preset difference value, the fresh air inlet is closed and the indoor air inlet is opened; if the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is not greater than a third preset difference value, the fresh air inlet is opened and the indoor air inlet is closed, the third preset difference value being less than the second preset difference value; if the absolute value of the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset difference value and greater than the third preset difference value, the fresh air inlet and the indoor air inlet are opened; the second preset difference value when the air conditioner indoor unit is in a cooling mode is less than the second preset difference value when the air conditioner indoor unit is in a heating mode; and / or The third preset difference of the air conditioner indoor unit in the cooling mode is less than the third preset difference of the air conditioner indoor unit in the heating mode.

2. The indoor unit of claim 1, wherein, When the absolute value of the difference between the indoor environment humidity and the preset humidity is not greater than the first preset difference, the steam generation module operates at a first power; When the absolute value of the difference between the indoor environment humidity and the preset humidity is greater than the first preset difference, and the indoor environment humidity is less than the preset humidity, the steam generation module operates at a second power; When the absolute value of the difference between the indoor environment humidity and the preset humidity is greater than the first preset difference, and the indoor environment humidity is greater than the preset humidity, the steam generation module operates at a third power; The first power is less than the third power, and the second power is less than the third power.

3. The indoor unit of claim 1, wherein, The humidifying air outlet and the air conditioner air outlet are located on the front side of the shell, and the humidifying air outlet is located below the air conditioner air outlet. The steam generation module has a first outlet and a second outlet, the first outlet is located on the front side of the steam generation module and corresponds to the position of the humidifying air outlet, and the second outlet is located on the upper side of the steam generation module. When the absolute value of the difference between the indoor environment humidity and the preset humidity is not greater than the first preset difference, or the indoor environment humidity is less than the preset humidity, the humidifying gas flows to the humidifying air outlet through the first outlet. When the absolute value of the difference between the indoor environment humidity and the preset humidity is greater than the first preset difference, the humidifying gas flows to the heat exchanger through the second outlet to form dry gas, and the dry gas flows to the air conditioner air outlet.

4. The indoor unit of claim 3, wherein Further comprising: A first baffle and a second baffle, the first baffle and the second baffle are movably installed on the steam generation module, the first baffle is used to shield the first outlet, and the second baffle is used to shield the second outlet; When the air conditioner indoor unit is turned off, the first baffle shields the first outlet.

5. The air conditioner indoor unit according to claim 1, wherein When the absolute value of the difference between the indoor environment temperature and the outdoor environment temperature is not less than the second preset difference, the fresh air fan rotates at a first speed; When the absolute value of the difference between the indoor environment temperature and the outdoor environment temperature is not greater than the third preset difference, the fresh air fan rotates at a second speed; When the absolute value of the difference between the indoor environment temperature and the outdoor environment temperature is less than the second preset difference and greater than the third preset difference, the fresh air fan rotates at a third speed; The first speed, the second speed and the third speed decrease in turn.

6. The air conditioner indoor unit according to claim 1, wherein Further comprising: A third baffle, the third baffle is rotatably installed between a third position, a fourth position and a fifth position on the shell, the third baffle shields the fresh air inlet and exposes the indoor air inlet when it is in the third position, the third baffle shields the indoor air inlet and exposes the fresh air inlet when it is in the fourth position, and the third baffle exposes the indoor air inlet and the fresh air inlet when it is in the fifth position.

7. The air conditioner indoor unit according to claim 6, wherein The third baffle is in the third position when the indoor unit of the air conditioner is turned off.

8. The air conditioner indoor unit according to claim 1, characterized by The preset humidity when the indoor unit of the air conditioner is in the cooling mode is less than the preset humidity when the indoor unit of the air conditioner is in the heating mode.

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