Air conditioner indoor unit

Abstract

The present invention discloses an air conditioner indoor unit, comprising: a casing, a main air inlet and a main air outlet; an indoor heat exchanger and a main air supply fan; a fresh air module having a fresh air inlet and a fresh air outlet, and a fresh air fan; an air guide component, rotatably connected to the casing; a controller, configured to: when the detection value of an outdoor temperature sensor is greater than a set threshold, a fresh air module start signal, a main air conditioning module start signal and the air guide component is in a fully open position, control the main air supply fan to operate, and control the speed of the fresh air fan to operate in a low-medium-high-medium-low circulation mode. In the air conditioner indoor unit of the present invention, the fresh air flowing out of the fresh air module can be mixed with the air flow flowing out of the main air conditioning module, and driven by the air flow of the main air conditioning module, the fresh air can be brought farther, achieving the effect of long-distance fresh air; the fresh air fan and the main air conditioning module are mixed, so that the entire air flow blows in a circulation mode with constantly changing heights, achieving a natural wind effect.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an improvement on the structure of an indoor unit of an air conditioner. Background Art

[0002] The existing air conditioner structure, such as the commonly used vertical air conditioner that can achieve large-area air supply, has an indoor unit structure in which an air supply fan and an indoor heat exchanger are arranged inside the air conditioner casing, and an air inlet is arranged on the rear side of the casing, and an air outlet is arranged on the front side or both sides of the casing. When air is supplied, the air supply fan located inside draws the air flow from the air inlet and passes through the indoor heat exchanger for heat exchange, and then blows it out from the air outlet to achieve the air supply effect.

[0003] However, when this type of air-conditioning structure is in use, the indoor environment needs to remain closed to ensure that the cold or heat in the room does not flow out, so as to ensure that the air-conditioning can achieve better cooling or heating effects. However, being in a relatively closed environment for a long time, especially in the hot summer, is prone to the breeding of bacteria and viruses indoors. Subsequently, an air-conditioning indoor unit structure that introduces a fresh air module appeared. The fresh air module is set separately. By adding the fresh air module, outdoor fresh air is introduced to make the indoor air fresher. However, for this type of air-conditioning with a fresh air module, the fresh air runs alone and can only meet the need to introduce fresh air. It cannot meet the user's more usage requirements for fresh air, such as the high comfort requirement experience of fresh natural wind, and because the fan power of the fresh air module is relatively small, it cannot achieve the effect of delivering fresh air to a distant location. Summary of the invention

[0004] In order to solve the above technical problems existing in the air conditioner indoor unit in the prior art, the present invention provides a novel air conditioner indoor unit, which integrates a fresh air module on the air conditioner indoor unit, and centrally arranges the air outlets and cooperates with the structure of the air guide component, so that the fresh air flowing out of the fresh air module can be mixed with the air flow flowing out of the main air conditioner module. Driven by the air flow of the main air conditioner module, the fresh air can be brought farther, thereby achieving the effect of long-distance fresh air.

[0005] Moreover, when in use, the fresh air fan speed can be controlled by the controller to change into a low-medium-high-medium-low cycle mode, so that the user can experience a feeling of constantly changing natural wind, thus improving the comfort of the user experience.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] An air conditioner indoor unit comprises: a casing having a main air inlet and a main air outlet;

[0008] Main air conditioning module, including:

[0009] An indoor heat exchanger is disposed in the casing and is used to perform heat exchange with the airflow entering the casing;

[0010] A main air supply fan, located in the housing, for sucking air from the main air inlet, driving the air flow through the indoor heat exchanger, and then delivering the air flow from the main air outlet;

[0011] The fresh air module is used to introduce outdoor airflow to obtain fresh air, and has the following features:

[0012] Fresh air inlet part, used to introduce outdoor fresh air;

[0013] A fresh air outlet, used to output fresh air, which is arranged at a circumferential position of the main air outlet;

[0014] A fresh air fan is used to introduce airflow from the fresh air inlet and send airflow out from the fresh air outlet; and also includes:

[0015] An air guide component is rotatably connected to the housing to open or close the main air outlet and the fresh air outlet, and can mix the air flows out of the main air outlet and the fresh air outlet by shielding the air flows of the main air outlet and the fresh air outlet;

[0016] Outdoor temperature sensor, used to obtain the outdoor ambient temperature value;

[0017] The controller is configured to: when the detection value of the outdoor temperature sensor is greater than the set threshold, the fresh air module is turned on by a signal, the main air conditioning module is turned on by a signal and the air guide component is in the fully open position, control the main air supply fan to operate, and the speed of the fresh air fan operates in a low-medium-high-medium-low cycle mode.

[0018] When the controller of the air conditioner indoor unit receives the fresh air module start signal and the main air conditioner module start signal, it sends a control signal to the fresh air fan to make its speed run in a low-medium-high-medium-low cycle mode. Due to the action of the air guide component, the airflow of the fresh air fan and the airflow of the main air conditioner module are mixed, so that the mixed airflow also presents a low-medium-high-medium-low cycle change. Through this high, medium and low air supply mode, it forms a regular natural wind air supply experience effect, which improves the user's comfort.

[0019] In some embodiments of the present application: also include:

[0020] The circulation door body is arranged on the casing, shielded at the fresh air inlet portion, and used to open or close the fresh air inlet portion; the shielding or opening of the fresh air inlet portion is achieved through the circulation door body.

[0021] The controller is also configured to control the circulation door to open when the detection value of the outdoor temperature sensor is greater than a set threshold. When in use, the circulation door can be controlled to open when the outdoor temperature value is detected to be greater than the set threshold, preparing for the opening of the fresh air module.

[0022] In some embodiments of the present application: the air conditioner indoor unit also includes:

[0023] Fresh air module, the controller is configured to control the fresh air module to turn on after detecting that the fresh air module is turned on, and control the fresh air module to always remain in the turned-on state during the operation of the fresh air module.

[0024] When the fresh air module is turned on, the fresh air module is also controlled to start working. During the process of turning on the fresh air module, the fresh air module remains turned on to ensure that the fresh air delivered is fresh and clean.

[0025] In some embodiments of the present application: the air-conditioning indoor unit has an air-conditioning trigger button for turning on the main air-conditioning module and a fresh air trigger button for turning on the fresh air module;

[0026] The fresh air trigger button includes an automatic gear trigger button for controlling the fresh air fan to operate in a low-medium-high-medium-low cycle mode. When the automatic gear trigger button is triggered, the fresh air module is turned on;

[0027] The air conditioning trigger button includes a plurality of air supply trigger buttons with different modes. When any of the air supply trigger buttons is triggered, the main air conditioning module is turned on.

[0028] The main air conditioning module can be turned on by triggering any of the air supply trigger buttons, and the fresh air module can be turned on by triggering the automatic gear trigger button.

[0029] In some embodiments of the present application: the air supply trigger button includes:

[0030] A mixed air trigger button. When the mixed air trigger button is triggered, the controller controls the rotation speed of the main air supply fan and the rotation speed of the fresh air fan to change in a positive correlation.

[0031] When the main air-conditioning module is turned on by the single-wind trigger button, the controller controls the main air-conditioning module to operate in a low-medium-high-medium-low cycle mode, corresponding to the fresh air fan speed in low-medium-high-medium-low.

[0032] The speeds of the main air supply fan and the fresh air fan of the main air conditioning module are made to show a positive correlation, so as to achieve more obvious and regular natural wind changes and provide a better user experience.

[0033] In some embodiments of the present application: the air supply trigger button includes a single wind trigger button for controlling the main air supply fan to run at a preset speed. When the single wind trigger button is triggered, the controller controls the main air supply fan of the main air conditioning module to run at a preset speed.

[0034] When the main air-conditioning module is turned on by the single-wind trigger button, the controller controls the main air-conditioning module to run at a preset speed, and controls the speed of the fresh air fan to run in a low-medium-high-medium-low cycle mode.

[0035] The airflow flowing out of the fresh air outlet of the fresh air fan and the airflow flowing out of the main air outlet of the main air-conditioning module are mixed. Since the fresh air fan speed continuously circulates and supplies air in a low-medium-high-medium-low circulation mode, even if the airflow of the main air-conditioning module is supplied at a preset speed, the mixed flow of the two will eventually make the supplied airflow present a low-medium-high-medium-low circulation change. Through this continuously changing air supply mode of high, medium and low, an air supply experience effect similar to that of regular fresh air natural wind is formed, thereby improving the comfort of users.

[0036] In some embodiments of the present application: two main air outlets are provided, which are respectively arranged at two sides of the housing;

[0037] The fresh air outlet is provided with two groups, which are arranged corresponding to the two main air outlets respectively, and each group of the fresh air outlet includes:

[0038] A first fresh air outlet is arranged in parallel with the main air outlet and extends along the height direction of the main air outlet;

[0039] The second fresh air outlet is arranged at the bottom of the main air outlet to discharge fresh air from the bottom.

[0040] In some embodiments of the present application: the circulation door is opened before the fresh air module is opened.

[0041] In some embodiments of the present application: upon receiving the fresh air module shutdown signal and the main air conditioning module shutdown signal, the controller controls the fresh air fan and the main air supply fan to stop running. When fresh air natural wind supply is no longer needed, the user can turn off the fresh air module and the main air conditioning module by triggering the fresh air module trigger button and the main air conditioning module trigger button on the remote control, and the controller controls the fresh air fan and the main air supply fan to stop running accordingly.

[0042] In some embodiments of the present application: upon receiving the fresh air module shutdown signal and the main air conditioning module shutdown signal, the controller controls the circulation door to close and the fresh air module to stop working. As time goes by and according to user needs, when fresh air natural wind supply is no longer needed, the user can trigger the fresh air module trigger button on the remote control and the main air conditioning module trigger button to turn off the fresh air module and the main air conditioning module. After receiving the fresh air module and the main air conditioning module shutdown signal, the controller controls the circulation door to close accordingly and the fresh air module stops working.

[0043] The technical solution of the present invention has the following technical effects compared with the prior art:

[0044] When the controller of the air conditioner indoor unit proposed by the present invention receives the fresh air module start signal and the main air conditioner module start signal, it sends a control signal to the fresh air fan to make its rotation speed run in a low-medium-high-medium-low cycle mode. Due to the action of the air guide component, the airflow of the fresh air fan and the airflow of the main air conditioner module are mixed, so that the mixed airflow also presents a low-medium-high-medium-low cycle change. Through this high, medium and low changing air supply mode, it forms a regular natural wind air supply experience effect, which improves the user's comfort;

[0045] Since the main air supply fan of the main air-conditioning module has high power and a long air supply distance, while the fresh air fan has low power and a short air supply distance, the airflows flowing out of the main air outlet and the fresh air outlet are blocked and mixed by the air guide components and can be driven by the airflow of the main air-conditioning module to blow the airflow out of the fresh air outlet in a farther direction, so that the fresh air flow can be blown farther, realizing a long-distance fresh air supply experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0047] Figure 1 The overall structure of the air conditioner in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0048] Figure 2 The overall structure of the air conditioner in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0049] Figure 3 The overall structure of the air conditioner in the embodiment of the present invention is shown in FIG. Figure 3 ;

[0050] Figure 4A curve diagram showing the rotation speed of a fresh air fan of a fresh air module and the rotation speed of a main air supply fan of a main air conditioning module in one implementation mode of an air conditioner in an embodiment of the present invention;

[0051] Figure 5 A curve diagram showing the rotation speed of a fresh air fan of a fresh air module and the rotation speed of a main air supply fan of a main air conditioning module in another implementation manner of an air conditioner in an embodiment of the present invention;

[0052] Figure 6 A curve diagram showing the rotation speed of a fresh air fan of a fresh air module and the rotation speed of a main air supply fan of a main air conditioning module in another implementation manner of an air conditioner in an embodiment of the present invention;

[0053] Figure 7 A curve diagram showing the rotation speed of a fresh air fan of a fresh air module and the rotation speed of a main air supply fan of a main air conditioning module in another implementation manner of an air conditioner in an embodiment of the present invention;

[0054] Figure 8 A line diagram showing the rotation speed of a fresh air fan and the opening state of a circulation door of a fresh air module in one embodiment of an air conditioner in an embodiment of the present invention;

[0055] Fig. 9 A line diagram showing the rotation speed of a fresh air fan of a fresh air module and the operating state of a fresh air module in one implementation of an air conditioner in an embodiment of the present invention;

[0056] Fig.10 A line diagram showing the rotation speed of a fresh air fan of a fresh air module and the start / stop control state of the fresh air module in one implementation mode of an air conditioner in an embodiment of the present invention;

[0057] Fig.11 This is a line diagram of the rotation speed of the fresh air fan of the fresh air module and the start and stop status of the outdoor temperature sensor in one implementation manner of the air conditioner in an embodiment of the present invention. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0061] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0062] Embodiment 1

[0063] The air conditioner in this embodiment performs a refrigeration cycle of the air conditioner indoor unit 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.

[0064] The compressor compresses the refrigerant gas in a high temperature and high pressure state 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.

[0065] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner indoor unit can adjust the temperature of the indoor space.

[0066] The outdoor unit of the air conditioner indoor unit refers to a part of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner indoor unit includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0067] The indoor unit is the indoor unit of the air conditioner, and the outdoor unit corresponds to the outdoor unit of the air conditioner.

[0068] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner indoor unit functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner indoor unit functions as a cooler in a cooling mode.

[0069] Refrigerant circuit

[0070] The refrigerant circuit includes a compressor, an outdoor heat exchanger, an expansion valve, a liquid receiver, and an indoor heat exchanger. The indoor heat exchanger and the outdoor heat exchanger work as condensers or evaporators. The compressor sucks in refrigerant from the suction port and discharges the refrigerant compressed inside to the indoor heat exchanger from the discharge port.

[0071] The expansion valve is arranged between the outdoor heat exchanger and the indoor heat exchanger. The expansion valve has the function of expanding and reducing the pressure of the refrigerant flowing between the outdoor heat exchanger and the indoor heat exchanger. The expansion valve is configured to be able to change the opening degree. By reducing the opening degree, the flow resistance of the refrigerant passing through the expansion valve increases, and by increasing the opening degree, the flow resistance of the refrigerant passing through the expansion valve decreases.

[0072] The air conditioner indoor unit is also provided with a remote controller, which has the function of communicating with the control unit using infrared or other communication methods, for example. The remote controller is used for the user to perform various controls on the air conditioner indoor unit and realize the interaction between the user and the air conditioner indoor unit.

[0073] The outdoor unit further includes an outdoor fan that generates an airflow of outdoor air passing through the outdoor heat exchanger to promote heat exchange between the refrigerant flowing through the heat transfer tube and the outdoor air.

[0074] Air conditioner indoor unit structure:

[0075] The utility model comprises a housing 100 , which is in the shape of a vertical column, and an air outlet grille is arranged on the outer side of the housing 100 .

[0076] The housing 100 is provided with a main air outlet 410, which is a main air outlet. There are two main air outlets, which are symmetrically arranged at two sides of the housing 100.

[0077] In order to achieve a large-area air outlet effect, when the main air outlet is set, the height is set to be relatively high, extending from top to bottom along the height direction of the casing 100, and its length can be 2 / 3-1 / 2 of the height of the casing 100.

[0078] An air duct assembly is disposed inside the housing 100 , and an air duct for accommodating a main air supply fan is formed by the air duct assembly.

[0079] The air duct assembly is composed of air duct plates connected together.

[0080] A main air inlet is provided at the rear of the casing 100, and the main air inlet is the main air inlet. The air flow is introduced into the interior of the casing 100 through the main air inlet, and is driven by the main air supply fan to suck the air flow from the main air inlet, and then passes through the indoor heat exchanger for heat exchange. The air flow after heat exchange is sent out through the main air outlet 410. The air flow that has undergone heat exchange through the indoor heat exchanger is an air flow that has undergone heat exchange, and can achieve a cooling or heating effect accordingly.

[0081] Main air supply fan

[0082] The main air supply fan is a double cross-flow air supply device, including two cross-flow fans, which are arranged vertically and parallel to each other. Each cross-flow fan extends downward from the top of the casing 100 along the height of the casing 100, and its height is about 2 / 3 of the height of the casing 100, so as to achieve a large-area air supply effect;

[0083] During the setting, two cross-flow fans are arranged side by side inside the casing 100, and a separate air duct is formed inside the casing 100 to place each cross-flow fan. The two cross-flow fans are respectively arranged inside the two air ducts to separate the two cross-flow fans, so that the two cross-flow fans will not interfere with each other during operation, thereby ensuring the air outlet effect.

[0084] The air duct is correspondingly connected to the main air inlet and the main air outlet 410 to ensure that the air flow can be sucked into the cross-flow fan and sent out through the cross-flow fan.

[0085] Indoor heat exchanger

[0086] The indoor heat exchanger is arranged in a U shape, between the main air inlet and the main air supply fan, and is used to exchange heat with the suction air flow.

[0087] The U-shaped indoor heat exchanger is equipped with two cross-flow fans.

[0088] The indoor heat exchanger is composed of a plurality of fins and a plurality of heat transfer tubes penetrating the plurality of fins. The indoor heat exchanger functions as an evaporator or a radiator according to the operating state of the indoor unit, and performs heat exchange between the refrigerant flowing in the heat transfer tube and the air passing through the indoor heat exchanger. Although the indoor heat exchanger composed of fins and heat transfer tubes is described here, the indoor heat exchanger used in the present invention is not limited to a fin-tube type heat exchanger, and for example, a heat exchanger using flat porous tubes instead of heat transfer tubes may also be used.

[0089] The airflow enters from the main air inlet at the rear, and is driven by the main air supply fan to flow through the indoor heat exchanger for heat exchange, and then the main air supply fan blows the heat-exchanged airflow out through the main air outlet 410.

[0090] Fresh air module 200

[0091] The fresh air module 200 is used to introduce outdoor airflow to obtain fresh air. It is located below the main air conditioning module 400 and is installed in the bottom area of ​​the casing 100.

[0092] The fresh air module 200 has:

[0093] A fresh air inlet 210 is used to introduce outdoor fresh air;

[0094] The fresh air inlet portion 210 is a fresh air inlet port when set, which has a fresh air duct with a relatively long length extending outward from the fresh air duct. The fresh air inlet port is set at the end of the fresh air duct, and the airflow is introduced into the fresh air duct through the fresh air inlet port.

[0095] Since the fresh air duct is relatively long, in order to shield the fresh air duct, the fresh air module 200 is also correspondingly provided with a circulation door body, and the circulation door body is used to shield the fresh air duct.

[0096] The circulation door body can move relative to the casing 100 to open or close the fresh air inlet portion 210 and shield the fresh air duct at the same time.

[0097] When the fresh air module 200 is not turned on, the fresh air inlet 210 can be shielded by the circulation door to prevent external dust from entering. When fresh air needs to be introduced, the circulation door is opened to ensure that fresh air can be introduced.

[0098] A fresh air outlet 220, for outputting fresh air, which is arranged around the main air outlet 410;

[0099] The fresh air outlet portion 220 is a fresh air outlet. The outdoor fresh air sucked in by the fresh air fan is sucked in by the fresh air fan and then blown out through the fresh air outlet portion 220 and transported to the room.

[0100] Two main air outlets 410 are provided, and two groups of fresh air outlets 220 are correspondingly provided, which are arranged corresponding to the two main air outlets 410 respectively.

[0101] Each group of the fresh air outlet 220 includes:

[0102] The first fresh air outlet 221 is arranged in parallel with the main air outlet 410 and extends along the height direction of the main air outlet 410 to form a parallel air outlet arranged in parallel with the main air outlet 410;

[0103] The first fresh air outlet 221 may be formed by extending upward from the fresh air duct.

[0104] The second fresh air outlet 222 is arranged at the bottom of the main air outlet 410 to discharge fresh air from the bottom, forming a series air outlet connected in series with the main air outlet 410, which is equivalent to extending the length of the main air outlet 410 and increasing the length of the air supply port.

[0105] The fresh air fan is used to introduce airflow from the fresh air inlet portion 210 and send the airflow out from the fresh air outlet portion 220 .

[0106] The fresh air outlets of the fresh air outlet parts 220 are all arranged at positions around the main air outlet part 410, so that the fresh air flowing out of the fresh air module 200 and the air-conditioned air of the main air-conditioning module 400 can be transported outward from the same area.

[0107] Air guide component 300

[0108] Since the fresh air outlet 220 is arranged along the circumference of the main air outlet 410, the air outlet of the entire air conditioner indoor unit is compactly arranged. In order to shield all the air outlets of the air conditioner indoor unit and guide the air flow, the air conditioner indoor unit is correspondingly provided with an air guide component 300.

[0109] The air guide component 300 is rotatably connected to the housing 100 and can open or close the main air outlet 410 and the fresh air outlet 220 by rotating relative to the housing 100.

[0110] The air guide component 300 is a vertically arranged air guide plate. The height of the air guide plate should be greater than the sum of the heights of the main air outlet 410 and the second fresh air outlet 222. Its width can cover the main air outlet 410 and the first fresh air outlet 221, so that the air guide plate can completely cover the main air outlet 410 and the fresh air outlet 220 when closed.

[0111] When the air guide component 300 rotates relative to the housing 100 , the main air outlet 410 and the fresh air outlet 220 can be opened.

[0112] The air guide component 300 can block the airflow of the main air outlet 410 and the fresh air outlet 220 to mix the airflows;

[0113] When the air flow is blown out through the main air outlet 410 and the fresh air outlet 220, it will flow through the side wall of the air guide component 300. Due to the blocking effect of the air guide component 300, the air flow directions of the main air outlet 410 and the fresh air outlet 220 will be changed, so that the air flows of the two will intersect and mix together to form a mixed fresh air flow, which is blown out.

[0114] The air guide component 300 also guides the airflow by blocking and redirecting the airflow so that the airflow flows outward along the guiding direction of the air guide component 300 .

[0115] There are two guide components, which are arranged at both sides of the casing 100 to guide the mixed airflow flowing out of the fresh air outlet 220 and the main air outlet 410 at both sides, so that the airflow is sent out from both sides.

[0116] Controller

[0117] The controller is used to control various components of the main air conditioning module 400 and the fresh air module 200, such as the fresh air fan speed, the main air supply fan speed of the main air conditioning module 400 and other parameters.

[0118] The controller is configured to: when the detection value of the outdoor temperature sensor is greater than the set threshold, the fresh air module 200 is turned on, the main air conditioning module 400 is turned on and the air guide component 300 is in the fully open position, control the main air supply fan to operate, and the speed of the fresh air fan operates in a low-medium-high-medium-low cycle mode.

[0119] In order to detect the outdoor temperature, the air conditioner is also provided with an outdoor ambient temperature detection sensor, which can be arranged on the outer wall of the casing 100 to detect the outdoor ambient temperature value. When the outdoor ambient temperature value is detected to reach the set threshold, it means that the conditions for turning on the fresh air module 200 are met.

[0120] The set threshold may be set to -15°C. When the outdoor ambient temperature detection sensor detects that the outdoor ambient temperature is greater than -15°C, it indicates that the conditions for opening the fresh air module 200 are met.

[0121] The fresh air module 200 can be turned on by a fresh air trigger button, which includes an automatic gear trigger button for controlling the fresh air fan to operate in a low-medium-high-medium-low cycle mode. When the automatic gear trigger button is triggered, the fresh air module 200 is turned on.

[0122] In some embodiments, the automatic gear trigger button can be arranged on a remote control. The remote control communicates with the controller via wireless communication. When the user manually triggers the automatic gear trigger button, it will transmit a signal to the controller, and the controller will receive the start signal of the fresh air module 200.

[0123] The main air-conditioning module 400 start-up signal can be triggered by the air-conditioning trigger button. The air-conditioning trigger button is also correspondingly set on the remote control. When the air-conditioning trigger button is pressed, the main air-conditioning module 400 is turned on, and it transmits a signal to the controller. The controller receives the signal that the main air-conditioning module 400 is turned on.

[0124] In some embodiments of the present application, the air conditioning trigger button may correspondingly include a plurality of air supply trigger buttons in different mode states, and when any of the air supply trigger buttons is triggered, it indicates that the main air conditioning module 400 is turned on.

[0125] That is, the air conditioning trigger button may include a single air supply trigger button, a mixed air trigger button, a sleep trigger button, an automatic air trigger button and other trigger buttons, and each trigger button represents an air supply mode of the main air conditioning module 400.

[0126] In some embodiments of the present application, the air supply trigger button includes a single wind trigger button that controls the main air supply fan to run at a preset speed. When the single wind trigger button is triggered, the controller controls the main air supply fan of the main air conditioning module 400 to run at a preset speed.

[0127] The preset speed of the main air supply fan corresponding to the single wind trigger button can be a high speed or a low speed. When the single wind trigger button is triggered, the main air supply fan runs at a constant speed.

[0128] When the main air-conditioning module 400 is turned on by the single-wind trigger button, the controller accordingly controls the main air-conditioning module 400 to run at a preset speed, and at the same time controls the speed of the fresh air fan to run in a low-medium-high-medium-low cycle mode.

[0129] By means of the arrangement of the fresh air outlet 220 being centrally arranged around the main air outlet 410 and the shielding and guiding function of the air guide component 300, the airflow flowing out of the fresh air outlet 220 of the fresh air fan and the airflow flowing out of the main air outlet 410 of the main air conditioning module 400 can be mixed. Since the rotation speed of the fresh air fan is continuously circulating and supplying air in a low-medium-high-medium-low circulation mode, even if the airflow of the main air conditioning module 400 is supplied at a preset rotation speed, the mixed flow of the two will eventually make the supplied airflow present a low-medium-high-medium-low circulation change. Through this high, medium and low continuously changing air supply mode, an air supply experience effect similar to a regular fresh air natural wind is formed, thereby improving the comfort of users.

[0130] Furthermore, since the main air-conditioning module 400 is the main air supply module, its corresponding main air supply fan has high power and a long air supply distance, while the fresh air fan has low power and a short air supply distance. After the airflows flowing out of the main air outlet 410 and the fresh air outlet 220 are blocked and mixed by the air guide component 300, the airflow flowing out of the fresh air outlet 220 can be driven by the airflow of the main air-conditioning module 400 to be blown in a farther direction, so that the fresh air flow can be blown farther, and a long-distance fresh air supply experience is achieved.

[0131] In some embodiments of the present application, the air supply trigger button includes a mixed air trigger button. When the mixed air trigger button is triggered, the controller controls the rotational speed of the main air supply fan and the rotational speed of the fresh air fan to change in a positive correlation.

[0132] When the main air conditioning module 400 is turned on by the air mixing trigger button, the controller controls the speed of the main air supply fan and the speed of the fresh air fan to change in a positive correlation, that is, the speed of the fresh air fan operates in a low-medium-high-medium-low cycle mode;

[0133] The main air supply fan speed also operates in a low-medium-high-medium-low cycle mode, and the speeds of the two increase or decrease synchronously.

[0134] Since the speed of the fresh air fan continuously circulates and supplies air in a low-medium-high-medium-low cycle mode, the speed of the main air supply fan also operates in a low-medium-high-medium-low cycle mode. After the two are mixed, the airflow delivered presents a low-medium-high-medium-low cycle change. The speed of the fresh air fan and the speed of the main air supply fan are increased or decreased synchronously, which makes the change of the high, medium and low of the blown air flow more obvious, forming a regular fresh air natural wind effect with better experience, and improving the comfort of users.

[0135] Similarly, since the main air-conditioning module 400 is the main air supply module, its corresponding main air supply fan has high power and a long air supply distance, while the fresh air fan has low power and a short air supply distance. After the airflows flowing out of the main air outlet 410 and the fresh air outlet 220 are mixed, the airflow flowing out of the fresh air outlet 220 can be driven by the airflow of the main air-conditioning module 400 to be blown in a farther direction, so that the fresh air flow can be blown farther, realizing a long-distance fresh air supply experience.

[0136] In some embodiments of the present application, the air conditioner indoor unit further includes:

[0137] The controller is also configured to control the circulation door to open when the detection value of the outdoor temperature sensor is greater than a set threshold.

[0138] That is, when it is detected that the outdoor ambient temperature is greater than the set threshold, the condition for opening the fresh air module 200 is met. At this time, the circulation door can be controlled to open first, and then the user can turn on or off the fresh air module 200 according to actual usage needs.

[0139] In some embodiments of the present application, the circulation door is opened before the fresh air module 200 is opened. For example, the user may open the fresh air module 200 according to demand 5 seconds after the circulation door is opened.

[0140] In some embodiments of the present application, it also includes:

[0141] Fresh air module, the controller is configured to control the fresh air module to turn on after detecting that the fresh air module 200 is turned on, and control the fresh air module to always remain in the turned-on state during the operation of the fresh air module 200.

[0142] After the fresh air module 200 is turned on, the rotation speed starts to increase and its fresh air module also starts to work at the same time.

[0143] The fresh module is a module built into the indoor unit of the air conditioner for sterilization and disinfection. It can sterilize and disinfect the outflowing airflow. The structure of the fresh module can directly adopt the structure in the existing technology, which will not be described in detail here.

[0144] The airflow is sterilized and disinfected through the freshness module to ensure the cleanliness of the outflowing airflow.

[0145] In some embodiments of the present application, when receiving a shutdown signal from the fresh air module 200 and a shutdown signal from the main air conditioning module 400, the controller controls the fresh air fan and the main air supply fan to stop running.

[0146] When fresh air and natural wind supply are no longer needed, the user can turn off the fresh air module 200 and the main air conditioning module 400 by triggering the fresh air module 200 trigger button and the main air conditioning module 400 trigger button on the remote control, and the controller will control the fresh air fan and the main air supply fan to stop running accordingly.

[0147] In some embodiments of the present application, upon receiving the fresh air module 200 shutdown signal and the main air conditioning module 400 shutdown signal, the controller controls the circulation door to close and the fresh air module to stop working. As time goes by and according to user needs, when fresh air natural wind supply is no longer needed, the user can trigger the fresh air module 200 trigger button and the main air conditioning module 400 trigger button on the remote control to turn off the fresh air module 200 and the main air conditioning module 400. After receiving the fresh air module 200 and the main air conditioning module 400 shutdown signal, the controller controls the circulation door to close accordingly and the fresh air module stops working.

[0148] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0149] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An air conditioner indoor unit, comprising: A casing, the casing having a main air inlet and a main air outlet; Main air conditioning module, including: An indoor heat exchanger is arranged in the casing and is used for performing heat exchange with the airflow entering the casing; A main air supply fan, located in the housing, for sucking air from the main air inlet, driving the air flow through the indoor heat exchanger, and then delivering the air flow from the main air outlet; The fresh air module is used to introduce outdoor airflow to obtain fresh air. It is located below the main air conditioning module and has: Fresh air inlet part, used to introduce outdoor fresh air; A fresh air outlet, used to output fresh air, which is arranged at a circumferential position of the main air outlet; A fresh air fan is used to introduce airflow from the fresh air inlet and send airflow out from the fresh air outlet; it is characterized by further comprising: An air guide component is rotatably connected to the housing to open or close the main air outlet and the fresh air outlet, and can mix the air flows out of the main air outlet and the fresh air outlet by shielding the air flows of the main air outlet and the fresh air outlet; Outdoor temperature sensor, used to obtain the outdoor ambient temperature value; The controller is configured to: when the detection value of the outdoor temperature sensor is greater than the set threshold, the fresh air module is turned on by a signal, the main air conditioning module is turned on by a signal and the air guide component is in the fully open position, control the operation of the main air supply fan, and control the speed of the fresh air fan to operate in a low-medium-high-medium-low cycle mode.

2. The air conditioner indoor unit according to claim 1, characterized in that: Also included are: A circulation door body is arranged on the casing, shielded at the fresh air inlet portion, and used to open or close the fresh air inlet portion; The controller is also configured to control the circulation door to open when the detection value of the outdoor temperature sensor is greater than a set threshold.

3. The air conditioner indoor unit according to claim 2, characterized in that: Also included are: Fresh air module, the controller is configured to control the fresh air module to turn on after detecting that the fresh air module is turned on, and control the fresh air module to always remain in the turned-on state during the operation of the fresh air module.

4. The air conditioner indoor unit according to claim 1, characterized in that: The air-conditioning indoor unit has an air-conditioning trigger button for turning on the main air-conditioning module and a fresh air trigger button for turning on the fresh air module; The fresh air trigger button includes an automatic gear trigger button for controlling the fresh air fan to operate in a low-medium-high-medium-low cycle mode. When the automatic gear trigger button is triggered, the fresh air module is turned on; The air conditioning trigger button includes a plurality of air supply trigger buttons with different modes. When any of the air supply trigger buttons is triggered, the main air conditioning module is turned on.

5. The air conditioner indoor unit according to claim 4, characterized in that: The air supply trigger button includes a mixed air trigger button. When the mixed air trigger button is triggered, the controller controls the rotation speed of the main air supply fan and the rotation speed of the fresh air fan to change in a positive correlation.

6. The air conditioner indoor unit according to claim 4, characterized in that: The air supply trigger button includes a single wind trigger button for controlling the main air supply fan to run at a preset speed. When the single wind trigger button is triggered, the controller controls the main air supply fan of the main air conditioning module to run at a preset speed.

7. The air conditioner indoor unit according to claim 1, characterized in that: The main air outlets are provided with two, which are arranged at two sides of the casing respectively; The fresh air outlet is provided with two groups, which are arranged corresponding to the two main air outlets respectively, and each group of the fresh air outlet includes: A first fresh air outlet is arranged in parallel with the main air outlet and extends along the height direction of the main air outlet; The second fresh air outlet is arranged at the bottom of the main air outlet to discharge fresh air from the bottom.

8. The air conditioner indoor unit according to claim 2, characterized in that: The circulation door is opened before the fresh air module is opened.

9. The air conditioner indoor unit according to claim 1, characterized in that: The controller is configured to control the fresh air fan and the main air supply fan to stop running when receiving a fresh air module shutdown signal and a main air conditioning module shutdown signal.

10. The air conditioner indoor unit according to claim 3, characterized in that: The controller is configured to control the circulation door to close and the fresh air module to stop working when receiving a fresh air module closing signal and a main air conditioning module closing signal.

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