Air conditioner indoor unit, air conditioner, air conditioner control method and storage medium

Abstract

The present disclosure relates to an air conditioning indoor unit, an air conditioner, an air conditioning control method, and a storage medium. The air conditioning indoor unit includes: an air inlet and an air outlet opposite the air inlet; an indoor heat exchange component located between the air inlet and the air outlet, including a first heat exchange part and a second heat exchange part connected to the first heat exchange part; a first heating component located between the first heat exchange part and the air outlet; a shielding component located at the air inlet and capable of moving to partially block the air inlet and block the air inlet area corresponding to the second heat exchange part, so that the airflow input from the air inlet flows to the first heat exchange part; a control component electrically connected to the shielding component and the first heating component; and a control component for controlling the shielding component to partially block the air inlet and control the first heating component to heat the airflow that has exchanged heat through the first heat exchange part when the defrost mode is turned on, so that the air outlet can output the heated airflow. The air conditioning indoor unit proposed in the present disclosure can continuously heat the indoor environment when the defrost mode is turned on.

Description

Technical Field

[0001] The present disclosure relates to the field of variable frequency air conditioners and automatic control, and in particular to an air conditioner indoor unit, an air conditioner, an air conditioner control method, and a storage medium. Background Art

[0002] Currently, conventional inverter air conditioners use a reverse cycle defrost method. This means that during the defrost period, the system airflow switches from heating to cooling mode, utilizing the heat from the compressor and refrigerant to complete the defrost. However, when the indoor ambient temperature approaches the set point, the inverter air conditioner reduces its frequency. This low-frequency operation prolongs the frosting cycle on the outdoor heat exchanger and creates a denser frost layer. Furthermore, this low-frequency operation results in lower indoor heat exchanger pipe temperatures. Consequently, the system absorbs a significant amount of heat from the room during the defrost period, resulting in lower airflow temperatures at the indoor unit, a significant drop in indoor temperature, and a poor user experience. Summary of the Invention

[0003] To overcome the problems existing in the related art, the present disclosure provides an air conditioner indoor unit, an air conditioner, an air conditioner control method, and a storage medium. The air conditioner indoor unit proposed in the present disclosure can continuously heat the indoor environment when the defrost mode is turned on.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided an air conditioner indoor unit, comprising at least:

[0005] an air inlet and an air outlet opposite to the air inlet;

[0006] an indoor heat exchange component, located between the air inlet and the air outlet, and comprising a first heat exchange portion and a second heat exchange portion connected to the first heat exchange portion;

[0007] a first heating assembly, located between the first heat exchange portion and the air outlet;

[0008] a shielding assembly located at the air inlet and capable of moving to partially block the air inlet; wherein, when the shielding assembly partially blocks the air inlet, the shielding assembly blocks the air inlet area corresponding to the second heat exchange portion, and the airflow input from the air inlet flows toward the first heat exchange portion;

[0009] A control component electrically connects the shielding component and the first heating component, and is used to control the shielding component to partially block the air inlet and control the first heating component to heat the airflow that has passed through the first heat exchange part when the defrost mode is turned on, so that the air outlet can output the heated airflow.

[0010] In some embodiments, when the shielding assembly partially blocks the air inlet, the projection of the second heat exchange part onto the shielding assembly is located on the shielding assembly; the projection of the first heat exchange part onto the shielding assembly is located outside the shielding assembly or partially on the shielding assembly.

[0011] In some embodiments, the air conditioner indoor unit further includes:

[0012] a fan, located in a space enclosed by the first heat exchange portion and the second heat exchange portion, and between the first heat exchange portion and the air outlet, for outputting the airflow flowing toward the indoor heat exchange component to the outside of the air outlet;

[0013] The first heating component is located between the fan and the first heat exchange part.

[0014] In some embodiments, the shielding assembly includes a movable shield;

[0015] The control component is used to control the movable baffle to move toward the air inlet to partially block the air inlet when the defrost mode is turned on; and to control the movable baffle to move away from the air inlet when switching from the defrost mode to the heating mode, so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part.

[0016] In some embodiments, the shielding assembly includes a foldable shield that can be folded or unfolded;

[0017] The control assembly is configured to control the foldable baffle to unfold toward the air inlet to partially block the air inlet when the defrost mode is turned on; and to control the foldable baffle to fold away from the air inlet when the defrost mode is switched to the heating mode, so that the airflow input from the air inlet can flow toward the first heat exchange portion and the second heat exchange portion;

[0018] The area of the foldable baffle after unfolding is larger than the area of the foldable baffle after folding.

[0019] In some embodiments, the shielding assembly includes: a rotatable baffle;

[0020] The control component is used to control the rotatable baffle to rotate relative to the air inlet in a preset rotation direction to partially block the air inlet when the defrost mode is turned on; and to control the rotatable baffle to rotate relative to the air inlet in a direction opposite to the preset rotation direction when switching from the defrost mode to the heating mode, so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part.

[0021] In some embodiments, the air conditioner indoor unit further includes:

[0022] a second heating component connected to the first heat exchange portion, for heating the refrigerant flowing to the first heat exchange portion;

[0023] The control component is electrically connected to the second heating component and is used to control the second heating component to start heating when the defrost mode is turned on.

[0024] In some embodiments, the air conditioner indoor unit further includes:

[0025] a first temperature measuring component, connected to the first heat exchange part, and configured to detect the surface temperature of the first heat exchange part when the defrost mode is turned on;

[0026] The control component is electrically connected to the first temperature measuring component and is used to control the second heating component to increase the heating power when the surface temperature of the first heat exchange part is lower than a first temperature threshold.

[0027] In some embodiments, the air conditioner indoor unit further includes:

[0028] a flow regulating valve connected to the second heat exchange part, for regulating the flow of the refrigerant flowing through the second heat exchange part;

[0029] The control assembly is connected to the flow regulating valve and is configured to control the opening angle of the flow regulating valve so that the opening angle of the flow regulating valve is a first opening angle when the heating mode is turned on; and to control the opening angle of the flow regulating valve so that the opening angle of the flow regulating valve is switched from the first opening angle to a second opening angle when the heating mode is switched to the defrost mode;

[0030] Wherein, the second opening angle is smaller than the first opening angle.

[0031] In some embodiments, when the opening angle is the second opening angle, the flow rate of the refrigerant entering the first heat exchange portion is the same as the flow rate of the refrigerant entering the second heat exchange portion;

[0032] When the opening angle is the second opening angle, the flow rate of the refrigerant entering the second heat exchange part is smaller than the flow rate of the refrigerant entering the first heat exchange part.

[0033] In some embodiments, the air conditioner indoor unit further includes:

[0034] The second temperature measuring component is connected to the second heat exchange part and is used to detect the surface temperature of the second heat exchange part when the defrost mode is turned on; the control component is electrically connected to the second temperature measuring component and is used to control the flow control valve to increase the opening angle of the flow control valve when the surface temperature of the second heat exchange part is lower than a second temperature threshold.

[0035] According to a second aspect of an embodiment of the present disclosure, there is provided an air conditioner, comprising:

[0036] The air conditioner indoor unit proposed in the above embodiment of the present disclosure;

[0037] The outdoor unit of the air conditioner includes an outdoor heat exchange component, which is connected to the indoor heat exchange component of the air conditioner indoor unit to form a circulation cycle of refrigerant to complete cooling and heating work for the indoor environment.

[0038] In some embodiments, the air conditioner outdoor unit further comprises a four-way valve and a compressor;

[0039] The four-way valve is connected to the compressor, the first heat exchange part of the indoor heat exchange component, and the second heat exchange part of the indoor heat exchange component, respectively, and is used to change the flow direction of the circulating refrigerant when the defrost mode is turned on, so that the refrigerant output from the first heat exchange part and heated by the second heating component of the air conditioner indoor unit and the refrigerant output from the second heat exchange part after heat exchange are output to the compressor;

[0040] The compressor is used to compress the received refrigerant and output the compressed refrigerant to the outdoor heat exchange component, so that the compressed refrigerant can remove the frost layer attached to the outdoor heat exchange component.

[0041] According to a third aspect of an embodiment of the present disclosure, there is provided a method for controlling an air conditioner, the method comprising:

[0042] When the defrost mode is turned on, a shielding assembly located at the air inlet of the air conditioner is moved so that the shielding assembly partially blocks the air inlet; wherein, when the shielding assembly partially blocks the air inlet, airflow input from the air inlet flows toward the first heat exchange portion of the air conditioner;

[0043] heating the airflow that has exchanged heat through the first heat exchange part by using the first heating component of the air conditioner;

[0044] The heated air flow is output to an air outlet through the fan of the air conditioner.

[0045] In some embodiments, the method further comprises:

[0046] When switching from the defrosting mode to the heating mode, the shielding assembly is moved so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part connected to the first heat exchange part.

[0047] In some embodiments, the step of moving a shielding component located at an air inlet of the air conditioner so that the shielding component shields a portion of the air inlet comprises:

[0048] Moving the movable baffle included in the shielding assembly toward the air inlet until it partially shields the air inlet;

[0049] or,

[0050] unfolding the foldable baffle included in the shielding assembly toward the air inlet until the foldable baffle partially shields the air inlet;

[0051] or,

[0052] The rotatable baffle included in the shielding assembly is rotated relative to the air inlet along a preset rotation direction to partially shield the air inlet.

[0053] In some embodiments, the method further comprises:

[0054] When the defrost mode is turned on, the refrigerant flowing to the first heat exchange part is heated by the second heating component of the air conditioner to increase the surface temperature of the first heat exchange part.

[0055] In some embodiments, the second heating component of the air conditioner heats the refrigerant flowing to the first heat exchange part, including:

[0056] detecting the surface temperature of the first heat exchange part by a first temperature measuring component connected to the first heat exchange part;

[0057] When the surface temperature of the first heat exchange portion is lower than a first temperature threshold, the heating power of the second heating assembly is increased to increase the temperature of the refrigerant flowing to the first heat exchange portion.

[0058] In some embodiments, the method further comprises:

[0059] When the defrost mode is turned on, the opening angle of the flow regulating valve of the air conditioner is switched from a first opening angle to a second opening angle so that the flow rate of the refrigerant flowing into the second heat exchange part of the air conditioner is less than the flow rate of the refrigerant flowing into the first heat exchange part;

[0060] When switching from the defrost mode to the heating mode, the opening angle of the flow regulating valve of the air conditioner is switched from the first opening angle to the first opening angle so that the flow rate of the refrigerant flowing into the first heat exchange part and the flow rate of the refrigerant flowing into the second heat exchange part are the same.

[0061] In some embodiments, the method further comprises:

[0062] detecting the surface temperature of the second heat exchange part by a second temperature measuring component connected to the second heat exchange part;

[0063] When the surface temperature of the second heat exchange part is lower than a second temperature threshold, the opening angle of the flow regulating valve is increased to increase the flow rate of the refrigerant flowing into the second heat exchange part.

[0064] In some embodiments, the method further comprises:

[0065] compressing the refrigerant flowing out of the first heat exchange portion and heated by the second heating assembly of the air conditioner and the refrigerant flowing out of the second heat exchange portion and subjected to heat exchange;

[0066] The compressed refrigerant is output to the outdoor heat exchange component of the air conditioner, so that the compressed refrigerant can remove the frost layer attached to the outdoor heat exchange component of the air conditioner.

[0067] According to a fourth aspect of an embodiment of the present disclosure, there is provided an air conditioner, comprising:

[0068] a shielding control module configured to, when the defrost mode is on, move a shielding assembly located at the air inlet of the air conditioner so that the shielding assembly partially blocks the air inlet; wherein, when the shielding assembly partially blocks the air inlet, airflow input from the air inlet flows toward the first heat exchange portion of the air conditioner;

[0069] a heating module configured to heat the airflow that has exchanged heat through the first heat exchange portion through a first heating component of the air conditioner;

[0070] The output module is configured to output the heated airflow to an air outlet through the fan of the air conditioner.

[0071] According to a fifth aspect of an embodiment of the present disclosure, a non-transitory computer-readable storage medium is provided, including:

[0072] When the instructions in the storage medium are executed by the processor of the air conditioner, the air conditioner is enabled to execute the air conditioner control method as described in the third aspect above.

[0073] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0074] The air-conditioning indoor unit proposed in the embodiment of the present disclosure adjusts the air inlet position of the indoor fan by controlling the movement of the shielding component when the defrost mode is turned on. In this way, the shielding component shields the second heat exchange part and guides the airflow to the first heat exchange part, thereby reducing the air inlet area. When the first heat exchange part and the second heat exchange part perform the defrosting operation to absorb heat from the indoor environment, the situation in which the airflow is cooled after passing through the second heat exchange part and outputs cold air from the air outlet is reduced, thereby reducing indoor temperature fluctuations; and the airflow passing through the first heat exchange part is heated by the first heating component and output from the air outlet, thereby completing continuous heating to the indoor environment, reducing the temperature drop in the indoor environment, and improving environmental comfort.

[0075] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0077] Figure 1 This is a schematic diagram of the structure of an air conditioner indoor unit according to an exemplary embodiment. Figure 1 ;

[0078] Figure 2 This is a structural diagram of an air-conditioning indoor unit when a heating mode is turned on according to an exemplary embodiment;

[0079] Figure 3 This is a structural diagram of an air-conditioning indoor unit when the defrost mode is turned on according to an exemplary embodiment;

[0080] Figure 4 1. It is a schematic diagram showing the positions of a shielding component and an indoor heat exchange component in an indoor unit of an air conditioner according to an exemplary embodiment;

[0081] Figure 5 This is a schematic diagram of the structure of an air conditioner indoor unit according to an exemplary embodiment. Figure 2 ;

[0082] Figure 6 is a structural diagram of an air conditioner proposed according to an exemplary embodiment;

[0083] Figure 7 is a flow chart of an air conditioner control method according to an exemplary embodiment;

[0084] Figure 8 This is a schematic diagram of the structure of an air conditioner according to an exemplary embodiment. Figure 3 ;

[0085] Figure 9 The figure is a structural block diagram of an air conditioner according to an exemplary embodiment. DETAILED DESCRIPTION

[0086] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0087] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of an air conditioner indoor unit according to an exemplary embodiment. Figure 1 ;like Figure 1 As shown, the present disclosure proposes an air-conditioning indoor unit 1, comprising:

[0088] An air inlet a and an air outlet b opposite to the air inlet;

[0089] The indoor heat exchange assembly 11 is located between the air inlet a and the air outlet b and includes a first heat exchange portion 111 and a second heat exchange portion 112 connected to the first heat exchange portion 111;

[0090] The first heating component 12 is located between the first heat exchange portion 111 and the air outlet b;

[0091] The shielding assembly 13 is located at the air inlet a and is movable to partially block the air inlet a. When the shielding assembly 13 partially blocks the air inlet a, the shielding assembly 13 blocks the air inlet area corresponding to the second heat exchange portion 112, and the airflow input from the air inlet a flows toward the first heat exchange portion 111.

[0092] The control component (not shown in the figure) is electrically connected to the shielding component 13 and the first heating component 12, and is used to control the shielding component 13 to partially block the air inlet a and control the first heating component 12 to heat the airflow that has passed through the first heat exchange part 111 when the defrost mode is turned on, so that the air outlet b can output the heated airflow.

[0093] The air conditioner indoor unit proposed in the present disclosure is applied to the air conditioner. When switching from the heating mode to the defrost mode, that is, when defrosting the outdoor heat exchange component of the air conditioner, the entry position of the indoor air flow into the air conditioner indoor unit is adjusted so that it passes through part of the indoor heat exchange component, and the passing air flow is heated by the first heating component to increase the output air flow temperature and improve the comfort of the indoor environment.

[0094] Here, the air-conditioning indoor unit proposed in the present disclosure may be a cabinet-type air-conditioning indoor unit or a wall-mounted air-conditioning indoor unit, and the present disclosure does not impose any restrictions on this.

[0095] The indoor heat exchange component proposed in the present disclosure is arranged between the air inlet and the air outlet, and is a very important component of the air-conditioning indoor unit to complete the heating and cooling work of the indoor environment; specifically, when the heating mode is turned on, the indoor heat exchange component is equivalent to the condenser, and the gaseous refrigerant (such as Freon) flows into the indoor heat exchange component to liquefy and release heat, while increasing the surface temperature of the indoor heat exchange component. When the indoor airflow passes through the indoor heat exchange component, it absorbs the heat released by the liquefaction of the refrigerant and is heated by the pipe wall of the indoor heat exchange component. The heated indoor airflow is output from the air outlet to complete the heating work of the indoor environment; when the cooling mode is turned on, the indoor heat exchange component is equivalent to the evaporator, and the liquid refrigerant flows into the indoor heat exchange component to vaporize and absorb heat, while reducing the surface temperature of the indoor heat exchange component. When the indoor airflow passes through the indoor heat exchange component, it absorbs heat by the refrigerant and is cooled by the pipe wall of the indoor heat exchange component. The cooled indoor airflow is output from the air outlet to complete the cooling work of the indoor environment.

[0096] See also Figure 2 , Figure 2 : is a structural diagram of an air-conditioning indoor unit when the heating mode is turned on according to an exemplary embodiment; Figure 2 As shown, in the heating mode, when the airflow enters from the air inlet a, the temperature rises after passing through the entire indoor heat exchange component 11 and is output from the air outlet b.

[0097] When switching from defrost mode to heating mode, the control module controls the movement of the shielding assembly to reset, allowing airflow from the air inlet to flow toward the first and second heat exchange sections. This flexible control of the shielding assembly's movement ensures that the heating performance of the air conditioner indoor unit in heating mode is not affected.

[0098] It's important to note that when defrost mode is enabled, the refrigerant circulates throughout the air conditioner in the same direction and maintains the same state within each component as when in cooling mode. That is, turning defrost on the indoor unit (or air conditioner) is equivalent to turning on cooling mode. In defrost mode, liquid refrigerant flows into the indoor heat exchange components, absorbing heat and removing frost from the outdoor heat exchange components in the outdoor unit.

[0099] In the present disclosure, the indoor heat exchange assembly includes a first heat exchange portion and a second heat exchange portion, and the first heating assembly is located between the first heat exchange portion and the air outlet. Figure 1In the flow direction of the airflow, that is, in the direction from the air inlet a to the air outlet b, the first heat exchange part 111 is located upstream of the first heating component 12, and the second heat exchange part 112 is located downstream of the first heating component 12; the first heating component 12 can heat the airflow after heat exchange with the first heat exchange part 111, but cannot heat the airflow after heat exchange with the second heat exchange part 112.

[0100] Here, the first heating component includes an electric auxiliary heating component for adjusting the indoor ambient temperature when powered on. The electric auxiliary heating component includes, but is not limited to, a semiconductor heating ceramic. When the temperature of the airflow passing through the semiconductor heating ceramic is lower than a preset airflow temperature, the electric auxiliary heating is activated to heat the passing airflow, thereby raising the indoor ambient temperature.

[0101] In conventional defrost mode, combined with Figure 2 ,like Figure 2 When the air conditioner indoor unit 1 shown is in defrost mode (equivalent to cooling mode), the airflow passing through the second heat exchange unit 112 cannot be heated by the first heating element 12, and the output airflow is cooled. Extensive experimental data shows that the surface temperature of the indoor heat exchange components of household air conditioners can drop to around -30°C in the late stages of defrost mode, causing indoor temperature fluctuations of up to 8-12°C in defrost mode, significantly affecting indoor temperature comfort.

[0102] See also Figure 3 , Figure 3 : is a structural diagram of an air-conditioning indoor unit when the defrost mode is turned on according to an exemplary embodiment; Figure 3 As shown, the shielding component 13 is located at the air inlet a and can move to partially block the air inlet a under the action of the control component, thereby reducing the air flow rate of the air conditioner indoor unit 1 and changing the air inlet position. Combined with the position of the first heating component, when the defrost mode is turned on, the shielding component 13 partially blocks the air inlet area corresponding to the second heat exchange part 112 by partially blocking the air inlet a. In this way, the airflow flows directly to the first heat exchange part 111 through the unblocked part of the air inlet a and can be heated by the first heating component 12 between the first heat exchange part 111 and the air outlet b. In this way, not only can the indoor environment be continuously heated in the defrost mode, but the flow rate of the airflow flowing to the second heat exchange part and unable to be heated by the first heating component is also reduced, effectively controlling the temperature difference fluctuation and improving the environmental comfort.

[0103] In the present disclosure, the control module can be a microcontroller unit (MCU), a central processing unit (CPU), etc. arranged inside the air conditioner. The present disclosure does not limit this, and is used to control the movement of the shielding component when the defrost mode is turned on.

[0104] The air-conditioning indoor unit proposed in the embodiment of the present disclosure adjusts the air inlet position of the indoor fan by controlling the movement of the shielding component when the defrost mode is turned on. In this way, the shielding component shields the second heat exchange part and guides the airflow to the first heat exchange part, thereby reducing the air inlet area. When the first heat exchange part and the second heat exchange part perform the defrosting operation to absorb heat from the indoor environment, the situation in which the airflow is cooled after passing through the second heat exchange part and outputs cold air from the air outlet is reduced, thereby reducing indoor temperature fluctuations; and the airflow passing through the first heat exchange part is heated by the first heating component and output from the air outlet, thereby completing continuous heating to the indoor environment, reducing the temperature drop in the indoor environment, and improving environmental comfort.

[0105] In some embodiments, when the shielding assembly partially blocks the air inlet, the projection of the second heat exchange part onto the shielding assembly is located on the shielding assembly; the projection of the first heat exchange part onto the shielding assembly is located outside the shielding assembly or partially on the shielding assembly.

[0106] In some examples, the air inlet surface of the first heat exchange part is parallel to the air inlet, and the air inlet surface of the second heat exchange part can be parallel or perpendicular to the air inlet, or can be at a certain angle to the air inlet; and the projections of the first heat exchange part and the second heat exchange part in the direction of the air inlet can be spaced apart or partially overlapped; when the projections of the first heat exchange part and the second heat exchange part in the direction of the air inlet are spaced apart, the projection of the first heat exchange part onto the shielding component is located outside the shielding component, and when the projections of the first heat exchange part and the second heat exchange part in the direction of the air inlet partially overlap, the overlapping projection parts of the projections of the first heat exchange part and the second heat exchange part in the direction of the air inlet are located on the shielding component, so that the airflow to the second heat exchange part can be minimized.

[0107] For other examples, see Figure 4 , Figure 4 : is a schematic diagram of the positions of the shielding component and the indoor heat exchange component in the indoor unit of the air conditioner according to an exemplary embodiment; Figure 4 As shown, the first heat exchange section 111 is V-shaped, with its opening facing away from the air inlet a. The two branches of the V-shape are the first sub-heat exchange section 1111 and the second sub-heat exchange section 1112, wherein the second heat exchange section 112 is connected to the first sub-heat exchange section 1111. At this time, the air inlet surfaces of the first sub-heat exchange section 1111 and the second sub-heat exchange section 1112 are both at a certain angle to the air inlet a. At this time, the projection of the second heat exchange section 112 onto the shielding assembly 13 is located on the shielding assembly 13, and the projection of the first sub-heat exchange section 1111 onto the shielding assembly 13 is also located on the shielding assembly 13. This reduces the situation where the inclined air inlet surface of the first sub-heat exchange section guides the airflow through the second heat exchange section, further reducing the situation where the airflow is cooled after heat exchange in the second heat exchange section and is directly output to the outside without passing through the first heating assembly.

[0108] The embodiment of the present disclosure adjusts the shielding area of the first heat exchange part and the second heat exchange part by the shielding component, thereby reducing the situation where the airflow flows to the second heat exchange part and is cooled and then output to the indoor room, ensuring that the airflow flows through the first heat exchange part and is heated, ensuring the heating effect of heating the indoor environment during the defrosting process, and improving the comfort of the indoor environment.

[0109] In some embodiments, combined Figure 1 , the air-conditioning indoor unit 1 further includes:

[0110] The fan 14 is located in the space enclosed by the first heat exchange portion 111 and the second heat exchange portion 112, and is located between the first heat exchange portion 111 and the air outlet b, and is used to output the airflow flowing to the indoor heat exchange component 11 to the outside of the air outlet b;

[0111] The first heating assembly 12 is located between the fan b and the first heat exchange part 111 .

[0112] The fan has a cross-flow impeller for sucking in the air flow passing through the indoor heat exchange component and outputting it to the air outlet.

[0113] In traditional defrost mode, the fan stops working, preventing the indoor unit from heating and causing indoor temperature fluctuations. In the present disclosure, when defrost mode is on, the fan operates normally. Airflow entering the indoor unit from the unobstructed air inlet passes through the first heat exchange section, undergoes heat exchange, and is heated by the first heating element. It is then drawn into the continuously rotating crossflow impeller and outputs the heated airflow to the air outlet.

[0114] Through the embodiments of the present disclosure, when the defrost mode is turned on, the fan can work normally and continuously output hot airflow to the indoor environment, effectively reducing indoor temperature fluctuations.

[0115] In some embodiments, the shielding assembly includes a movable shield;

[0116] The control component is used to control the movable baffle to move toward the air inlet to partially block the air inlet when the defrost mode is turned on; and to control the movable baffle to move away from the air inlet when switching from the defrost mode to the heating mode, so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part.

[0117] Here, the shielding assembly further includes a first fixing member, which is fixed to the air conditioner indoor unit, and the movable baffle can move relative to the first fixing member.

[0118] In some examples, the first fixed member is a pulley, and the movable baffle is connected to the pulley. When the air conditioner indoor unit is not started or in heating mode, the movable baffle is located inside the air conditioner indoor unit. To reduce the structural footprint of the air conditioner indoor unit, the movable baffle is close to the inner wall of the air conditioner indoor unit housing. When the defrost mode is activated (switching from heating mode to defrost mode), the pulley rotates in a predetermined direction. Under the action of the rotation of the pulley, the movable baffle moves toward the air inlet to partially block the air inlet and the air inlet area corresponding to the second heat exchange unit to prevent airflow from flowing into the second heat exchange unit.

[0119] When switching from defrost mode to heating mode, the pulley rotates in the opposite direction of the preset moving direction, and the movable baffle moves away from the air inlet under the rotation of the pulley until it is reset, revealing the air inlet so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part.

[0120] In other examples, the first fixing member may also be a slide rail, and the movable baffle may move back and forth on the slide rail; the cooperation form of the first fixing member and the movable baffle may also be a magnetic adsorption cooperation structure, which is not limited in the present disclosure.

[0121] It should be noted that when the movable baffle partially blocks the air inlet, the movable baffle can be moved out of the shell of the air-conditioning indoor unit, thereby improving the effect of blocking the air inlet and reducing the structural space occupied by the air-conditioning indoor unit; the movable baffle can also be located inside the shell to reduce the wear of the baffle when entering and exiting, thereby increasing the service life of the movable baffle.

[0122] The embodiment of the present disclosure can improve the flexibility and efficiency of covering or revealing the air inlet by moving the movable baffle, and can effectively control the air inlet position in the defrost mode.

[0123] In some embodiments, the shield assembly includes a foldable shield that can be folded or unfolded;

[0124] a control assembly for controlling the foldable baffle to unfold toward the air inlet to partially block the air inlet when the defrost mode is on; and for controlling the foldable baffle to fold away from the air inlet when the defrost mode is switched to the heating mode, so that the airflow input from the air inlet can flow toward the first heat exchange portion and the second heat exchange portion;

[0125] The area of the unfolded foldable baffle is larger than the area of the folded foldable baffle.

[0126] In some examples, the foldable baffle includes two or more sub-foldable baffles of equal area. When the air conditioner indoor unit is not started or in heating mode, the foldable baffles are folded, with their total area representing the area of the largest sub-foldable baffle after folding. The folded foldable baffle is located at one edge of the air inlet and does not block the air inlet. When the defrost mode is activated (switching from heating mode to defrost mode), the sub-foldable baffles are sequentially unfolded until they are fully flattened or partially flattened and partially block the air inlet, until they block the second heat exchange portion and prevent airflow from flowing toward the second heat exchange portion. When switching from defrost mode to heating mode, the two or more sub-foldable baffles are sequentially folded and reset in a direction away from the air inlet, exposing the air inlet so that airflow input from the air inlet can flow toward the first heat exchange portion and the second heat exchange portion.

[0127] Here, the shielding assembly further includes a second fixing member, and the foldable baffle can be unfolded or folded relative to the second fixing member.

[0128] It should be noted that the second fixing member and the foldable baffle can be arranged inside the shell of the air-conditioning indoor unit, or can be arranged outside the shell of the air-conditioning indoor unit, and the present disclosure does not limit this.

[0129] The embodiment of the present disclosure can improve the flexibility and efficiency of blocking or revealing the air inlet by folding and unfolding the foldable baffle, and can effectively control the air inlet position in the defrost mode.

[0130] In some embodiments, the shielding assembly includes: a rotatable shield;

[0131] The control component is used to control the rotatable baffle to rotate relative to the air inlet in a preset rotation direction to partially block the air inlet when the defrost mode is turned on; and to control the rotatable baffle to rotate relative to the air inlet in a direction opposite to the preset rotation direction when switching from the defrost mode to the heating mode, so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part.

[0132] Here, the shielding assembly also includes: a third fixed part, located at the air inlet, the rotatable baffle includes a fixed end and a movable end connected to the fixed end, the fixed end is connected to the third fixed part, and the movable end can rotate along the preset rotation direction or in the opposite direction of the preset rotation direction with the third fixed part as the axis.

[0133] Here, there is at least one third fixing member and at least two rotatable baffles.

[0134] In some examples, there is one third fixed member and at least two rotatable baffles, including a first baffle and a second baffle, and the preset rotation directions of the first baffle and the second baffle are opposite; when the air conditioner indoor unit is not started, the first baffle and the second baffle respectively block the air inlet area of the first heat exchange part and the air inlet area of the second heat exchange part; at this time, the projection of the first heat exchange part is all located on the first baffle or on the first baffle and the second baffle, and the projection of the second heat exchange part is all located on the second baffle; when the heating mode is turned on, the first baffle and the second baffle are rotated in the opposite direction of the preset rotation direction relative to the air inlet with the third fixed member as the axis, and the entire air inlet area is exposed; when the heating mode is switched to the defrost mode, the second baffle rotates relative to the air inlet along the preset rotation direction to cover the air inlet area corresponding to the second heat exchange part to prevent the airflow from flowing to the second heat exchange part.

[0135] In other examples, there are multiple third fixed parts, multiple rotatable baffles, and one rotatable baffle is connected to a third fixed part, and the preset rotation direction of the multiple rotatable baffles is the same; when the air-conditioning indoor unit is not started, the multiple rotatable baffles block all air inlets; when the heating mode is turned on, the multiple rotatable baffles rotate in the opposite direction of the preset rotation direction relative to the air inlet with the third fixed part as the axis, and reveal the entire air inlet area; when the heating mode is switched to the defrost mode, some of the rotatable baffles rotate relative to the air inlet along the preset rotation direction to cover the air inlet area corresponding to the second heat exchange part, so as to prevent the airflow from flowing to the second heat exchange part.

[0136] The embodiment of the present disclosure can rotate relative to the air inlet through the rotatable baffle, which can improve the flexibility and efficiency of blocking or revealing the air inlet and can effectively control the air inlet position in the defrost mode.

[0137] In some embodiments, see Figure 5 , Figure 5 This is a schematic diagram of the structure of an air conditioner indoor unit according to an exemplary embodiment. Figure 2 ;like Figure 5 As shown, the air conditioner indoor unit 1 also includes:

[0138] The second heating component 15 is connected to the first heat exchange part 111 and is used to heat the refrigerant flowing to the first heat exchange part 111;

[0139] The control component is electrically connected to the second heating component 15 and is used to control the second heating component 15 to start heating when the defrost mode is turned on.

[0140] It should be noted that Figure 5The first heating component 12 and the fan 14 proposed above in the present disclosure are also shown. When the defrost mode is turned on, the airflow passes through the first heat exchange part 111 and is heated by the first heating component 12. The heated airflow is output to the outside of the air outlet under the action of the fan 14.

[0141] Here, the second heating assembly includes an electric heating device capable of converting electrical energy into thermal energy. The electric heating device includes a pressure pipe, and when the pressure pipe is energized, internal components convert the electrical energy into thermal energy, so that the low-temperature medium passing through the pressure pipe is heated.

[0142] In the present disclosure, when the heating mode is turned on, the electric heating device is not turned on, and the indoor environment is heated by relying on the refrigerant to exchange heat with the indoor environment in the indoor heat exchange component (including the first heat exchange part and the second heat exchange part).

[0143] When switching from heating mode to defrost mode, the refrigerant exchanges heat with the indoor environment in the indoor heat exchange component and cools the indoor environment. In order to reduce the occurrence of this cooling situation, the present disclosure also proposes an electric heating device to heat the refrigerant entering the first heat exchange part in advance to reduce its absorption of environmental heat in the first heat exchange part. Compared with the refrigerant directly entering the first heat exchange part, it not only increases the surface temperature of the first heat exchange part in the defrost mode, further increases the temperature of the airflow passing through the first heat exchange part, reduces the temperature difference with the normal airflow flowing in the room, but also enables the first heating component to reduce heating power and reduce energy consumption.

[0144] In some embodiments, combined Figure 5 , the air-conditioning indoor unit 1 further includes:

[0145] The first temperature measuring component 16 is connected to the first heat exchange part 111 and is used to detect the surface temperature of the first heat exchange part 111 when the defrost mode is turned on;

[0146] The control component is electrically connected to the first temperature measuring component 16 and is used to control the second heating component 15 to increase the heating power when the surface temperature of the first heat exchange part 111 is lower than the first temperature threshold.

[0147] Here, the first heat exchange part includes a heat exchange pipe, and the refrigerant can flow in the heat exchange pipe. The first temperature measurement component proposed in the present disclosure includes an inner pipe temperature sensor package, which can monitor the surface temperature of the heat exchange pipe of the first heat exchange part in real time.

[0148] It should be noted that the first temperature threshold is used to characterize the minimum extreme value of the surface temperature of the first heat exchange tube in the defrost mode. If the surface temperature is lower than the minimum extreme value, it means that the second heating component does not heat the refrigerant enough, causing the refrigerant to absorb more ambient heat in the first heat exchange part, causing the surface temperature to drop, which is not conducive to continuous heating in the defrost mode. Therefore, in the present disclosure, when the first temperature measuring component detects that the surface temperature of the first heat exchange part is lower than the first temperature threshold, the second heating component is controlled to increase the heating power to increase the heating degree of the refrigerant flowing to the first heat exchange part.

[0149] The first temperature measuring component proposed in the present disclosure can effectively monitor the surface temperature of the first heat exchange part, and timely adjust the heating power of the second heating component to increase the heating degree of the refrigerant flowing to the first heat exchange part, so as to effectively maintain the heating work of the air-conditioning indoor unit in the defrost mode.

[0150] In some embodiments, combined Figure 5 , the air-conditioning indoor unit 1 further includes:

[0151] a flow regulating valve 17 connected to the second heat exchange portion 112 and configured to regulate the flow of the refrigerant flowing through the second heat exchange portion 112;

[0152] a control assembly connected to the flow regulating valve 17, and configured to control the opening angle of the flow regulating valve 17 so that the opening angle of the flow regulating valve 17 is a first opening angle when the heating mode is turned on; and to control the opening angle of the flow regulating valve 17 so that the opening angle of the flow regulating valve 17 is switched from the first opening angle to the second opening angle when the heating mode is switched to the defrost mode;

[0153] The second opening angle is smaller than the first opening angle.

[0154] Here, the flow control valve may be a throttling device. The present disclosure controls the flow rate of refrigerant entering the second heat exchange section by changing the angle of the flow control valve. In defrost mode, the opening angle of the flow control valve is smaller than that in heating mode, such that the flow rate of refrigerant flowing into the second heat exchange section in defrost mode is smaller than the flow rate of refrigerant flowing into the second heat exchange section in heating mode.

[0155] It should be noted that in the defrost mode, by reducing the flow rate of the refrigerant entering the second heat exchange part, the heat absorbed by the refrigerant from the indoor environment during heat exchange in the second heat exchange part can be reduced, which not only meets the continuous operation of the defrost work but also reduces the temperature drop of the indoor environment.

[0156] In some embodiments, when the opening angle is the second opening angle, the flow rate of the refrigerant entering the first heat exchange portion is the same as the flow rate of the refrigerant entering the second heat exchange portion;

[0157] When the opening angle is the second opening angle, the flow rate of the refrigerant entering the second heat exchange part is smaller than the flow rate of the refrigerant entering the first heat exchange part.

[0158] Here, when the opening angle is the first opening angle, the flow regulating valve is in a fully open state, and the flow rate of the refrigerant entering the first heat exchange part is the same as the flow rate of the refrigerant entering the second heat exchange part. At this time, the first heat exchange part and the second heat exchange part start heating work synchronously; when the opening angle is the second opening angle, the opening angle of the flow regulating valve is reduced, the flow rate of the refrigerant entering the second heat exchange part is less, and the flow rate of the refrigerant entering the first heat exchange part is increased. In this way, the refrigerant continuously absorbs heat from the indoor environment in the second heat exchange part, which not only meets the continuous operation of the defrost work, but also enables more refrigerant to flow into the first heat exchange part, so as to be used to continuously heat the indoor environment through the second heating component.

[0159] In some embodiments, combined Figure 5 , the air-conditioning indoor unit 1 further includes:

[0160] The second temperature measuring component 18 is connected to the second heat exchange part 112 and is used to detect the surface temperature of the second heat exchange part 112 when the defrost mode is turned on;

[0161] The control component is electrically connected to the second temperature measuring component 18 and is used to control the flow regulating valve 17 to increase the opening angle of the flow regulating valve 17 when the surface temperature of the second heat exchange part 112 is lower than the second temperature threshold.

[0162] Here, the second heat exchange part includes a heat exchange pipe, and the refrigerant can flow in the heat exchange pipe. The second temperature measurement component proposed in the present disclosure includes an inner pipe temperature sensor package, which can monitor the surface temperature of the heat exchange pipe of the second heat exchange part in real time.

[0163] It should be noted that the second temperature threshold is used to characterize the minimum extreme value of the surface temperature of the second heat exchange tube in the defrost mode. If the surface temperature is lower than the minimum extreme value, it means that the heat absorbed by the refrigerant in the second heat exchange part during heat exchange has caused the surface temperature of the heat exchange pipe to drop to the preset minimum extreme value, but the frost layer has not been completely cleared at this time, and the defrosting work is still continuing, indicating that the heat absorbed by the refrigerant flowing into the second heat exchange part is not enough to complete the defrosting. At this time, the angle of the flow valve is increased to increase the flow rate of the refrigerant flowing into the second heat exchange part to increase the speed of the defrosting work.

[0164] In the embodiment of the present disclosure, when the first temperature measuring component detects that the surface temperature of the first heat exchange part is lower than the first temperature threshold, the flow regulating valve can also be controlled to increase the opening angle to increase the flow rate of the refrigerant flowing into the second heat exchange part and reduce the flow rate of the refrigerant flowing into the first heat exchange part. In this way, less refrigerant can evaporate and absorb heat in the first heat exchange part, effectively increasing the surface temperature of the first heat exchange part.

[0165] See also Figure 6 , Figure 6 is a structural diagram of an air conditioner proposed according to an exemplary embodiment; Figure 6 As shown, the present disclosure also provides an air conditioner, comprising:

[0166] The air-conditioning indoor unit 1 proposed above in the present disclosure;

[0167] The air conditioner outdoor unit 2 includes an outdoor heat exchange component 21, which is connected to the indoor heat exchange component 11 of the air conditioner indoor unit 1 to form a refrigerant circulation cycle to complete the cooling and heating work of the indoor environment.

[0168] The air conditioner may be a cabinet air conditioner or a wall-mounted air conditioner, and the present disclosure does not limit this.

[0169] It should be noted that when the heating mode is turned on, the liquefied refrigerant flows out of the indoor heat exchange component and flows into the outdoor heat exchange component. At this time, the outdoor heat exchange component is equivalent to an evaporator. The liquid refrigerant vaporizes in the outdoor heat exchange component and absorbs heat from the outdoor environment, thereby reducing the surface temperature of the outdoor heat exchange component. This causes a layer of frost to adhere to the outdoor heat exchange component.

[0170] When the thickness of the frost layer on the outdoor heat exchange component affects the efficiency of the heating operation, the heating mode is switched to the defrost mode, and the liquid refrigerant flows out of the indoor heat exchange component and flows into the outdoor heat exchange component. At this time, the outdoor heat exchange component is equivalent to a condenser, and the vaporized refrigerant is liquefied in the outdoor heat exchange component and releases heat to remove the frost layer attached to the outdoor heat exchange component.

[0171] The air conditioner proposed in the embodiment of the present disclosure can effectively complete the heating work, and when the heating work causes frost on the outdoor heat exchange component, it can effectively complete the defrosting work. It should be noted that since the air conditioner proposed in the present disclosure includes the air conditioner indoor unit described above, the air conditioner indoor unit can adjust the air inlet position of the indoor fan by controlling the movement of the shielding component when the defrost mode is turned on. In this way, the shielding component shields the second heat exchange part and guides the air flow to the first heat exchange part, reducing the air inlet area, so that when the first heat exchange part and the second heat exchange part perform the defrosting work to absorb the heat of the indoor environment, the situation where the air flow is cooled after passing through the second heat exchange part and outputs cold air from the air outlet is reduced, thereby reducing indoor temperature fluctuations; and the air flow passing through the first heat exchange part is heated by the first heating component and output from the air outlet, completing continuous heating to the indoor environment, reducing the temperature drop of the indoor environment, and improving environmental comfort.

[0172] In some embodiments, combined Figure 6 , the air-conditioning outdoor unit 2 further includes a four-way valve 22 and a compressor 23;

[0173] The four-way valve 22 is respectively connected to the compressor 23, the first heat exchange portion 111 of the indoor heat exchange assembly 11, and the second heat exchange portion 112 of the indoor heat exchange assembly 11. When the defrost mode is turned on, the four-way valve 22 is used to change the flow direction of the circulating refrigerant so that the refrigerant heated by the second heating component 15 of the air conditioner indoor unit 1 and the refrigerant after heat exchange output from the second heat exchange portion 112 are output to the compressor 23.

[0174] The compressor 23 is used to compress the received refrigerant and output the compressed refrigerant to the outdoor heat exchange component 21, so that the compressed refrigerant can remove the frost layer attached to the outdoor heat exchange component 21.

[0175] Here, combined Figure 6 The air-conditioning outdoor unit 2 further includes an electronic expansion valve 24 , which can adjust the flow rate and pressure of the refrigerant passing through the electronic expansion valve 24 .

[0176] A four-way valve is a control valve with four oil ports. Its operating principle is as follows: in cooling mode, when the solenoid valve coil is de-energized, the pilot valve moves leftward, driven by the right compression spring. High-pressure gas enters the capillary tube and then the right piston chamber. Meanwhile, gas in the left piston chamber is discharged. Due to the pressure differential across the piston, the piston and main valve move leftward, connecting the exhaust pipe with the outdoor heat exchanger, thus establishing a cooling cycle. In heating mode, when the solenoid valve coil is energized, the pilot valve moves rightward, driven by the magnetic force generated by the solenoid coil and overcoming the tension of the compression spring. High-pressure gas enters the capillary tube and then the left piston chamber. Meanwhile, gas in the right piston chamber is discharged. Due to the pressure differential across the piston, the piston and main valve move rightward, connecting the exhaust pipe with the indoor heat exchanger, thus establishing a heating cycle.

[0177] It should be noted that when switching from heating mode to defrost mode, the flow direction of the four-way valve changes, and the flow and operation of the refrigerant in the entire air conditioner are the same as in cooling mode.

[0178] The compressor continuously compresses the low-pressure refrigerant into high-pressure refrigerant in its working circuit, and transmits the heat generated by the compressor and the heat absorbed by the vaporization of the refrigerant to the outdoor heat exchange component or the indoor heat exchange component to exchange heat with the indoor or outdoor environment.

[0179] Combine Figure 6The air-conditioning indoor unit 1 has a flow regulating valve 17, a first temperature measuring component 16, a second heating component 15 and a second temperature measuring component 18. The opening angle of the flow regulating valve 17 can be adjusted according to the temperature value detected by the second temperature measuring component 18, and the heating power of the second heating component 15 can be adjusted according to the temperature value detected by the first temperature measuring component 16. The specific adjustment rules are referred to above in this disclosure, and the disclosure will not elaborate on them here.

[0180] In combination with the above disclosure, when the heating mode is turned on, the opening angle of the flow regulating valve is adjusted to the first opening angle, the second heating component is closed, and the liquid refrigerant flows to the outdoor heat exchange component and absorbs heat from the outdoor environment, and then returns to the compressor. The compressor generates high-temperature and high-pressure gaseous refrigerant through compression processing, and outputs it in equal amounts to the first heat exchange part and the second heat exchange part. The gaseous refrigerant exchanges heat with the indoor environment in the first heat exchange part and the second heat exchange part, liquefies and releases heat to heat the indoor environment, and flows back to the outdoor heat exchange component after throttling by the electronic expansion valve, and vaporizes and absorbs heat in the outdoor heat exchange component to complete the refrigerant cycle.

[0181] When switching from heating mode to defrost mode, the oil port opening direction of the four-way valve is adjusted, the flow path of the system refrigerant is adjusted from heating mode to cooling mode, the opening angle of the flow regulating valve is adjusted to the second opening angle, and the second heating component is turned on. The high-temperature and high-pressure gaseous refrigerant discharged by the compressor is output to the outdoor heat exchange component, where it is liquefied and releases heat, and the heat generated by the work of the compressor is also transmitted to the outdoor heat exchange component to be used together to remove the frost layer attached to the outdoor heat exchange component; the liquefied refrigerant is throttled by the electronic expansion valve and becomes low-pressure liquid refrigerant. The low-pressure liquid refrigerant with a larger flow rate is heated by the second heating component and flows into the first heat exchange part, and is used together with the first heating component and the fan to heat the indoor environment; the low-pressure liquid refrigerant with a smaller flow rate flows to the second heat exchange part, vaporizes and absorbs heat from the indoor environment. The two refrigerants are output from the first heat exchange part and the second heat exchange part respectively and converge into the four-way valve, and are transmitted to the compressor by the four-way valve. After compression by the compressor, the high-temperature and high-pressure refrigerant carrying the heat absorbed from the indoor environment and the heat generated by the work of the compressor is transmitted to the outdoor heat exchange component, completing the refrigerant cycle.

[0182] The present disclosure can effectively complete the defrosting operation and continuously heat the indoor environment during the defrosting operation through the efficient circulation of the refrigerant.

[0183] In the disclosed embodiment, the air-conditioning outdoor unit further includes an outdoor axial flow fan 25 , which can drive the outdoor heat exchange component to exchange heat with the outdoor environment under the rotation of the internal wind wheel.

[0184] See also Figure 7 , Figure 7 is a flow chart of an air conditioner control method according to an exemplary embodiment; Figure 7 As shown, the air conditioner control method can be implemented by steps S701-S703:

[0185] S701, when the defrost mode is on, moving a shielding assembly located at an air inlet of the air conditioner so that the shielding assembly partially blocks the air inlet; wherein, when the shielding assembly partially blocks the air inlet, airflow input from the air inlet flows toward a first heat exchange portion of the air conditioner;

[0186] S702, heating the airflow that has exchanged heat through the first heat exchange part by using a first heating component of the air conditioner;

[0187] S703: The heated airflow is output to the air outlet through the fan of the air conditioner.

[0188] The air conditioner control method proposed in the present disclosure is applied to the air conditioner proposed above in the present disclosure, and is used to continuously heat the indoor environment during the defrosting operation.

[0189] In step S701, when the defrost mode is turned on, the first heating component is started, and the fan in the air-conditioning indoor unit of the air conditioner continues to run. At this time, the shielding component of the air conditioner is adjusted so that the shielding component partially blocks the air inlet, guiding the airflow to the first heat exchange part and the first heating component.

[0190] Here, the shielding component can be a grille at the air inlet, or a retractable baffle set at the air inlet, etc., and the present disclosure does not limit this.

[0191] In step S702, the first heating component includes an electric auxiliary heating component. The electric auxiliary heating component includes, but is not limited to, a semiconductor heating ceramic. When the airflow temperature passing through the semiconductor heating ceramic is lower than a preset airflow temperature, that is, when the indoor temperature difference fluctuates beyond a temperature difference threshold, the semiconductor heating ceramic heats the air passing through the first heating component to maintain the indoor temperature.

[0192] In step S703, the air conditioner's fan has a crossflow impeller that draws in airflow passing through the indoor heat exchange component and outputs it to the air outlet. In defrost mode, the fan outputs the heated airflow to the indoor environment, effectively reducing indoor temperature fluctuations.

[0193] Through the method proposed in the embodiment of the present disclosure, the air inlet position of the indoor air flow can be adjusted by controlling the movement of the shielding component, so as to achieve continuous heating of the indoor environment in the defrost mode (equivalent to the cooling mode), effectively control temperature difference fluctuations, and improve environmental comfort.

[0194] In some embodiments, the air conditioner control method proposed in the present disclosure further includes:

[0195] When switching from the defrosting mode to the heating mode, the shielding component is moved so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part connected to the first heat exchange part.

[0196] It should be noted that in the heating mode, the refrigerant circulating in the first heat exchange part and the second heat exchange part will release heat. By moving the shielding component to expose the air inlet, the air flow is controlled to flow through the entire indoor heat exchange component, effectively completing the heat exchange, so that the air flow carrying the heat released by the refrigerant is output from the air-conditioning indoor unit to the indoor environment, effectively increasing the temperature in the indoor environment.

[0197] In the disclosed embodiment, the shielding assembly can move flexibly when switching between the defrost mode and the heating mode, and effectively adjust the air inlet position to ensure the effective operation of the defrost mode and the heating mode.

[0198] In some embodiments, the method proposed in step S701: moving the shielding component located at the air outlet of the air conditioner so that the shielding component blocks part of the air inlet can be implemented in the following manner:

[0199] Moving a movable baffle included in the shielding assembly toward the air inlet until it partially shields the air inlet;

[0200] or,

[0201] Expanding the foldable baffle included in the shielding assembly toward the air inlet to partially shield the air inlet;

[0202] The rotatable baffle included in the shielding assembly is rotated relative to the air inlet along a preset rotation direction to partially shield the air inlet.

[0203] Here, the shielding component may be a movable baffle, a foldable baffle, or a rotatable baffle. The present disclosure does not limit the form of the shielding component.

[0204] By moving the movable baffle or folding the foldable baffle, or rotating the rotatable baffle, the flexibility and efficiency of blocking or revealing the air inlet can be improved, and the air inlet position can be effectively controlled in the defrost mode.

[0205] In the embodiment of the present disclosure, when the defrost mode is switched to the heating mode, the air conditioner control method further includes:

[0206] Move the movable baffle in a direction away from the air inlet until the air outlet is exposed;

[0207] or,

[0208] Fold the foldable baffle away from the air inlet until the air outlet is exposed;

[0209] or,

[0210] The baffle can be rotated in a direction opposite to the preset rotation direction relative to the air inlet until the air outlet is exposed.

[0211] The disclosed embodiment can improve the flexibility and efficiency of shielding or revealing the air inlet by folding and unfolding the foldable baffle or moving the movable baffle, or rotating the rotatable baffle, and can ensure that in the defrost mode, the defrosting work is effectively carried out while heating the indoor environment, and can also ensure that in the heating mode, the heating work is effectively carried out.

[0212] In some embodiments, the air conditioner control method proposed in the present disclosure further includes:

[0213] When the defrost mode is turned on, the second heating assembly of the air conditioner heats the refrigerant flowing to the first heat exchange part to increase the surface temperature of the first heat exchange part.

[0214] The second heating component proposed in the present invention can heat the refrigerant entering the first heat exchange part in advance, reducing the amount of ambient heat absorbed by the refrigerant in the first heat exchange part. Compared with the refrigerant directly entering the first heat exchange part, it not only increases the surface temperature of the first heat exchange part in the defrost mode, but also further increases the temperature of the airflow passing through the first heat exchange part, reducing the temperature difference with the normal airflow flowing in the room, but also enables the first heating component to reduce heating power and consume less energy.

[0215] In some embodiments, the above-mentioned method of heating the refrigerant flowing to the first heat exchange part based on the second heating component of the air conditioner can also be implemented in the following manner:

[0216] detecting the surface temperature of the first heat exchange part by a first temperature measuring component connected to the first heat exchange part;

[0217] When the surface temperature of the first heat exchange portion is lower than a first temperature threshold, the heating power of the second heating assembly is increased to increase the temperature of the refrigerant flowing to the first heat exchange portion.

[0218] The first temperature measuring component proposed in the present disclosure can effectively monitor the surface temperature of the first heat exchange part, and timely adjust the heating power of the second heating component to increase the heating degree of the refrigerant flowing to the first heat exchange part, so as to effectively maintain the heating work of the air-conditioning indoor unit in the defrost mode.

[0219] In some embodiments, the air conditioner control method proposed in the present disclosure further includes:

[0220] When the defrost mode is on, the opening angle of the flow regulating valve of the air conditioner is switched from a first opening angle to a second opening angle, so that the flow rate of the refrigerant flowing into the second heat exchange part of the air conditioner is less than the flow rate of the refrigerant flowing into the first heat exchange part;

[0221] When switching from the defrosting mode to the heating mode, the opening angle of the flow regulating valve of the air conditioner is switched from the first opening angle to the second opening angle so that the flow rate of the refrigerant flowing into the first heat exchange part is the same as the flow rate of the refrigerant flowing into the second heat exchange part.

[0222] Here, when the opening angle is the first opening angle, the flow regulating valve is fully open, and the flow rate of the refrigerant entering the first heat exchange part is the same as the flow rate of the refrigerant entering the second heat exchange part. At this time, the first heat exchange part and the second heat exchange part start heating work synchronously; when the opening angle is the second opening angle, the opening angle of the flow regulating valve is reduced, the flow rate of the refrigerant entering the second heat exchange part is less, and the flow rate of the refrigerant entering the first heat exchange part is increased. In this way, the refrigerant continuously absorbs heat from the indoor environment in the second heat exchange part, which not only meets the continuous operation of the defrost work, but also enables more refrigerant to flow into the first heat exchange part, so as to be used to continuously heat the indoor environment through the second heating component.

[0223] In some embodiments, the air conditioner control method proposed in the present disclosure further includes:

[0224] detecting the surface temperature of the second heat exchange part by a second temperature measuring component connected to the second heat exchange part;

[0225] When the surface temperature of the second heat exchange part is lower than the second temperature threshold, the opening angle of the flow regulating valve is increased to increase the flow rate of the refrigerant flowing into the second heat exchange part.

[0226] The disclosed embodiment can reflect the working efficiency of the first heat exchange part during the defrosting operation by detecting the surface temperature of the second heat exchange part. If the surface temperature is lower than the second temperature threshold, it means that the heat absorbed by the refrigerant in the second heat exchange part during heat exchange has reduced the surface temperature of the heat exchange pipe to a minimum value. However, at this time, the frost layer has not been completely cleared and the defrosting operation is still continuing, indicating that the heat absorbed by the refrigerant flowing into the second heat exchange part is insufficient to complete the defrosting. At this time, the angle of the flow valve is increased to increase the flow rate of the refrigerant flowing into the second heat exchange part, so as to increase the speed of the defrosting operation.

[0227] In some embodiments, the air conditioner control method provided in the embodiments of the present disclosure further includes:

[0228] compressing the refrigerant flowing out of the first heat exchange portion and heated by the second heating assembly of the air conditioner and the refrigerant flowing out of the second heat exchange portion and subjected to heat exchange;

[0229] The compressed refrigerant is output to the outdoor heat exchange component of the air conditioner, so that the compressed refrigerant can melt the frost layer attached to the outdoor heat exchange component of the air conditioner.

[0230] Here, in the defrost mode, the total refrigerant flowing to the indoor heat exchange component includes two refrigerants. The liquid refrigerant with a larger flow rate is heated by the second heating component and flows into the first heat exchange part, and is used together with the first heating component and the fan to heat the indoor environment. At this time, the refrigerant is heated and exchanges heat with the indoor environment to absorb a small amount of heat; the low-pressure liquid refrigerant with a smaller flow rate flows to the second heat exchange part, vaporizes and absorbs most of the heat from the indoor environment. The two refrigerants converge in the compressor. After being compressed by the compressor, the refrigerant carrying the heat absorbed from the indoor environment and the heat generated by the work of the compressor is transported to the outdoor heat exchange component to remove the frost layer on the outdoor heat exchange component.

[0231] The present disclosure can ensure the stable execution of the defrosting operation and realize continuous heating of the indoor environment in the defrosting mode by controlling the flow of refrigerant to different indoor heat exchange components.

[0232] See also Figure 8 , Figure 8 This is a schematic diagram of the structure of an air conditioner according to an exemplary embodiment. Figure 3 ;like Figure 8 As shown, the air conditioner 800 includes:

[0233] The shielding control module 801 is configured to move a shielding assembly located at the air inlet of the air conditioner when the defrost mode is on, so that the shielding assembly partially blocks the air inlet; wherein, when the shielding assembly partially blocks the air inlet, airflow input from the air inlet flows toward the first heat exchange portion of the air conditioner;

[0234] The heating module 802 is configured to heat the airflow passing through the first heat exchange part through the first heating component of the air conditioner;

[0235] The output module 803 is configured to output the heated airflow to the air outlet through the fan of the air conditioner.

[0236] In some embodiments, the shielding control module 801 is further configured to move the shielding component when switching from the defrosting mode to the heating mode, so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part connected to the first heat exchange part.

[0237] In some embodiments, the shielding control module 801 is further configured to move the movable baffle included in the shielding assembly toward the direction of the air inlet to partially shield the air inlet; or, to unfold the foldable baffle included in the shielding assembly toward the direction of the air inlet to partially shield the air inlet; or, to rotate the rotatable baffle included in the shielding assembly along a preset rotation direction relative to the air inlet to partially shield the air inlet.

[0238] In some embodiments, the heating module 802 is further configured to heat the refrigerant flowing to the first heat exchange part based on the second heating component of the air conditioner when the defrost mode is turned on, so as to increase the surface temperature of the first heat exchange part.

[0239] In some embodiments, the heating module 802 is further configured to detect the surface temperature of the first heat exchange part by connecting the first temperature measuring component to the first heat exchange part; when the surface temperature of the first heat exchange part is less than the first temperature threshold, the heating power of the second heating component is increased to increase the temperature of the refrigerant flowing to the first heat exchange part.

[0240] In some embodiments, the air conditioner also includes a flow regulating module, which is configured to switch the opening angle of the flow regulating valve of the air conditioner from a first opening angle to a second opening angle when the defrost mode is turned on, so that the flow rate of the refrigerant flowing into the second heat exchange part of the air conditioner is less than the flow rate of the refrigerant flowing into the first heat exchange part; when switching from the defrost mode to the heating mode, the opening angle of the flow regulating valve of the air conditioner is switched from the first opening angle to the second opening angle, so that the flow rate of the refrigerant flowing into the first heat exchange part and the flow rate of the refrigerant flowing into the second heat exchange part are the same.

[0241] In some embodiments, the flow regulating module is further configured to detect the surface temperature of the second heat exchange part through a second temperature measuring component connected to the second heat exchange part; when the surface temperature of the second heat exchange part is lower than the second temperature threshold, the opening angle of the flow regulating valve is increased to increase the flow rate of the refrigerant flowing into the second heat exchange part.

[0242] In some embodiments, the air conditioner also includes a defrost module, which is configured to compress the refrigerant flowing out of the first heat exchange part after being heated by the second heating component of the air conditioner and the refrigerant flowing out of the second heat exchange part after heat exchange; and output the compressed refrigerant to the outdoor heat exchange component of the air conditioner, so that the compressed refrigerant can remove the frost layer attached to the outdoor heat exchange component of the air conditioner.

[0243] Figure 9 FIG. 1 is a structural block diagram of an air conditioner according to an exemplary embodiment. Figure 5As shown, air conditioner 900 includes at least one or more processors 901, memory resources represented by memory 902, a communication bus 903, and at least one external communication interface 904. Communication bus 903 is used to connect and communicate between processor 901 and memory 902. Memory 902 is used to store executable instructions, such as application programs. The application programs stored in memory 902 may include one or more modules, each corresponding to a set of instructions. Processor 901 is used to execute the application programs stored in memory 902 to perform the air conditioner control method proposed in the above-mentioned embodiments of the present disclosure.

[0244] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 902 including instructions. The instructions can be executed by a processor 901 of an air conditioner 900 to perform the above-described air conditioner control method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0245] A non-transitory computer-readable storage medium, when instructions in the storage medium are executed by a processor in an air conditioner, enables the air conditioner to perform an air conditioner control method, the method comprising:

[0246] When the defrost mode is on, the shielding assembly of the air conditioner is moved toward the air inlet of the air conditioner so that the shielding assembly partially blocks the air inlet; wherein, when the shielding assembly partially blocks the air inlet, the airflow input from the air inlet flows toward the first heat exchange portion of the air conditioner;

[0247] heating the airflow that has exchanged heat through the first heat exchange part by using the first heating component of the air conditioner;

[0248] The heated air flow is output to the air outlet through the air conditioner's fan.

[0249] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0250] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioner indoor unit, characterized in that: include: an air inlet and an air outlet opposite to the air inlet; an indoor heat exchange component, located between the air inlet and the air outlet, and comprising a first heat exchange portion and a second heat exchange portion connected to the first heat exchange portion; a first heating assembly, located between the first heat exchange portion and the air outlet; a shielding assembly located at the air inlet and capable of moving to partially block the air inlet; wherein, when the shielding assembly partially blocks the air inlet, the shielding assembly blocks the air inlet area corresponding to the second heat exchange portion, and the airflow input from the air inlet flows toward the first heat exchange portion; A control component electrically connects the shielding component and the first heating component, and is used to control the shielding component to partially block the air inlet and control the first heating component to heat the airflow that has passed through the first heat exchange part when the defrost mode is turned on, so that the air outlet can output the heated airflow.

2. The air conditioner indoor unit according to claim 1, characterized in that: When the shielding assembly partially blocks the air inlet, the projection of the second heat exchange part onto the shielding assembly is located on the shielding assembly; the projection of the first heat exchange part onto the shielding assembly is located outside the shielding assembly or partially on the shielding assembly.

3. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The air conditioner indoor unit also includes: a fan, located in a space enclosed by the first heat exchange portion and the second heat exchange portion, and between the first heat exchange portion and the air outlet, for outputting the airflow flowing toward the indoor heat exchange component to the outside of the air outlet; The first heating component is located between the fan and the first heat exchange part.

4. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The shielding assembly includes a movable baffle; The control component is used to control the movable baffle to move toward the air inlet to partially block the air inlet when the defrost mode is turned on; When switching from the defrosting mode to the heating mode, the movable baffle is controlled to move in a direction away from the air inlet, so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part.

5. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The shielding assembly includes a foldable baffle that can be folded or unfolded; The control component is used to control the foldable baffle to unfold toward the air inlet to partially cover the air inlet when the defrost mode is turned on; and, when switching from the defrosting mode to the heating mode, controlling the foldable baffle to fold in a direction away from the air inlet so that the airflow input from the air inlet can flow toward the first heat exchange portion and the second heat exchange portion; The area of the foldable baffle after unfolding is larger than the area of the foldable baffle after folding.

6. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The shielding assembly includes: a rotatable baffle; The control component is used to control the rotatable baffle to rotate relative to the air inlet in a preset rotation direction to partially block the air inlet when the defrost mode is turned on; and to control the rotatable baffle to rotate relative to the air inlet in a direction opposite to the preset rotation direction when switching from the defrost mode to the heating mode, so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part.

7. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The air conditioner indoor unit also includes: a second heating component connected to the first heat exchange portion, for heating the refrigerant flowing to the first heat exchange portion; The control component is electrically connected to the second heating component and is used to control the second heating component to start heating when the defrost mode is turned on.

8. The air conditioner indoor unit according to claim 7, characterized in that: The air conditioner indoor unit also includes: a first temperature measuring component, connected to the first heat exchange part, and configured to detect the surface temperature of the first heat exchange part when the defrost mode is turned on; The control component is electrically connected to the first temperature measuring component and is used to control the second heating component to increase the heating power when the surface temperature of the first heat exchange part is lower than a first temperature threshold.

9. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The air conditioner indoor unit also includes: a flow regulating valve connected to the second heat exchange part, for regulating the flow of the refrigerant flowing through the second heat exchange part; The control assembly is connected to the flow regulating valve and is configured to control the opening angle of the flow regulating valve so that the opening angle of the flow regulating valve is a first opening angle when the heating mode is turned on; and to control the opening angle of the flow regulating valve so that the opening angle of the flow regulating valve is switched from the first opening angle to a second opening angle when the heating mode is switched to the defrost mode; Wherein, the second opening angle is smaller than the first opening angle.

10. The air conditioner indoor unit according to claim 9, characterized in that: When the opening angle is the second opening angle, the flow rate of the refrigerant entering the first heat exchange part is the same as the flow rate of the refrigerant entering the second heat exchange part; When the opening angle is the second opening angle, the flow rate of the refrigerant entering the second heat exchange part is smaller than the flow rate of the refrigerant entering the first heat exchange part.

11. The air conditioner indoor unit according to claim 9, characterized in that: The air conditioner indoor unit also includes: a second temperature measuring component, connected to the second heat exchange portion, and configured to detect a surface temperature of the second heat exchange portion when the defrost mode is turned on; The control component is electrically connected to the second temperature measuring component, and is used to control the flow regulating valve to increase the opening angle of the flow regulating valve when the surface temperature of the second heat exchange part is lower than a second temperature threshold.

12. An air conditioner, characterized in that: include: The air conditioner indoor unit according to any one of claims 1 to 11; The outdoor unit of the air conditioner includes an outdoor heat exchange component, which is connected to the indoor heat exchange component of the air conditioner indoor unit to form a circulation cycle of refrigerant to complete cooling and heating work for the indoor environment.

13. The air conditioner according to claim 12, wherein: The air-conditioning outdoor unit further comprises a four-way valve and a compressor; The four-way valve is connected to the compressor, the first heat exchange part of the indoor heat exchange component, and the second heat exchange part of the indoor heat exchange component, respectively, and is used to change the flow direction of the circulating refrigerant when the defrost mode is turned on, so that the refrigerant output from the first heat exchange part and heated by the second heating component of the air conditioner indoor unit and the refrigerant output from the second heat exchange part after heat exchange are output to the compressor; The compressor is used to compress the received refrigerant and output the compressed refrigerant to the outdoor heat exchange component, so that the compressed refrigerant can remove the frost layer attached to the outdoor heat exchange component.

14. An air conditioner control method, characterized in that: The method comprises: When the defrost mode is turned on, a shielding assembly located at the air inlet of the air conditioner is moved so that the shielding assembly partially blocks the air inlet; wherein, when the shielding assembly partially blocks the air inlet, airflow input from the air inlet flows toward the first heat exchange portion of the air conditioner; heating the airflow that has exchanged heat through the first heat exchange part by using the first heating component of the air conditioner; The heated air flow is output to an air outlet through the fan of the air conditioner.

15. The air conditioner control method according to claim 14, wherein: The method further comprises: When switching from the defrosting mode to the heating mode, the shielding assembly is moved so that the airflow input from the air inlet can flow to the first heat exchange part and the second heat exchange part connected to the first heat exchange part.

16. The air conditioner control method according to claim 14 or 15, characterized in that: The step of moving the shielding component located at the air inlet of the air conditioner so that the shielding component shields a portion of the air inlet comprises: Moving the movable baffle included in the shielding assembly toward the air inlet until it partially shields the air inlet; or, unfolding the foldable baffle included in the shielding assembly toward the air inlet until the foldable baffle partially shields the air inlet; or, The rotatable baffle included in the shielding assembly is rotated relative to the air inlet along a preset rotation direction to partially shield the air inlet.

17. The air conditioner control method according to claim 14 or 15, characterized in that: The method further comprises: When the defrost mode is turned on, the refrigerant flowing to the first heat exchange part is heated by the second heating component of the air conditioner to increase the surface temperature of the first heat exchange part.

18. The air conditioner control method according to claim 17, wherein: The second heating component based on the air conditioner heats the refrigerant flowing to the first heat exchange part, including: detecting the surface temperature of the first heat exchange part by a first temperature measuring component connected to the first heat exchange part; When the surface temperature of the first heat exchange portion is lower than a first temperature threshold, the heating power of the second heating assembly is increased to increase the temperature of the refrigerant flowing to the first heat exchange portion.

19. The air conditioner control method according to claim 14, wherein: The method further comprises: When the defrost mode is turned on, the opening angle of the flow regulating valve of the air conditioner is switched from a first opening angle to a second opening angle so that the flow rate of the refrigerant flowing into the second heat exchange part of the air conditioner is less than the flow rate of the refrigerant flowing into the first heat exchange part; When switching from the defrost mode to the heating mode, the opening angle of the flow regulating valve of the air conditioner is switched from the first opening angle to the first opening angle so that the flow rate of the refrigerant flowing into the first heat exchange part and the flow rate of the refrigerant flowing into the second heat exchange part are the same.

20. The air conditioner control method according to claim 19, wherein: The method further comprises: detecting the surface temperature of the second heat exchange part by a second temperature measuring component connected to the second heat exchange part; When the surface temperature of the second heat exchange part is lower than a second temperature threshold, the opening angle of the flow regulating valve is increased to increase the flow rate of the refrigerant flowing into the second heat exchange part.

21. The air conditioner control method according to claim 19, wherein: The method further comprises: compressing the refrigerant flowing out of the first heat exchange portion and heated by the second heating assembly of the air conditioner and the refrigerant flowing out of the second heat exchange portion and subjected to heat exchange; The compressed refrigerant is output to the outdoor heat exchange component of the air conditioner, so that the compressed refrigerant can remove the frost layer attached to the outdoor heat exchange component of the air conditioner.

22. An air conditioner, characterized in that: The air conditioner comprises: a shielding control module configured to, when the defrost mode is on, move the shielding assembly of the air conditioner toward the air inlet of the air conditioner so that the shielding assembly partially blocks the air inlet; wherein, when the shielding assembly partially blocks the air inlet, airflow input from the air inlet flows toward the first heat exchange portion of the air conditioner; a heating module configured to heat the airflow that has exchanged heat through the first heat exchange portion through a first heating component of the air conditioner; The output module is configured to output the heated airflow to an air outlet through the fan of the air conditioner.

23. A non-transitory computer-readable storage medium, characterized in that When the instructions in the storage medium are executed by a processor of the air conditioner, the air conditioner is enabled to execute the air conditioner control method according to any one of claims 14 to 21.

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