Air conditioner and control method of air conditioner

Abstract

The application provides an air conditioner and a control method of the air conditioner. The air conditioner comprises a shell, the shell has an air inlet, and the air conditioner further comprises: a fresh air joint, comprising a joint shell and a valve core part, the joint shell is connected with the shell, the joint shell has a fresh air inlet, an air return inlet and an air outlet, the fresh air inlet is used for being communicated with the outside, the air return inlet is used for being communicated with the inside, and the air outlet is communicated with the air inlet; the valve core part is movably connected with the joint shell, so that the valve core part changes the flow area of the fresh air inlet by shielding the fresh air inlet; and a detection part is used for detecting the air quality parameter of the air entering from the air return inlet, so as to adjust the area of the fresh air inlet shielded by the valve core part according to the air quality parameter. The air conditioner solves the problem that the air conditioner in the prior art cannot achieve the relatively optimal effect of supplementing sufficient fresh air and making the energy consumption of the whole machine low.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically, to an air conditioner and a control method for the air conditioner. Background Technology

[0002] Currently, portable air conditioners cool by circulating air within the room. When a portable air conditioner is turned on, people usually close doors and windows to achieve faster cooling or save energy. However, as people move around in the enclosed space, the oxygen content gradually decreases while the carbon dioxide content gradually increases, reducing air cleanliness. If fresh air is not replenished in time, people will feel stuffy, forcing them to open windows for ventilation, resulting in poor comfort and energy inefficiency.

[0003] To address the issue of ventilation required when using air conditioning, common solutions include adding a fresh air function to the unit, adding fresh air duct accessories, or developing integrated fresh air and air conditioning units. However, none of these solutions achieve the optimal balance between providing sufficient fresh air and minimizing overall energy consumption. Summary of the Invention

[0004] The main objective of this invention is to provide an air conditioner and an air conditioner control method to solve the problem that existing air conditioners cannot achieve the optimal effect of both supplementing sufficient fresh air and keeping the overall energy consumption low.

[0005] To achieve the above objectives, according to one aspect of the present invention, an air conditioner is provided, comprising a housing having an air inlet. The air conditioner further comprises: a fresh air connector, including a connector housing and a valve core, the connector housing being connected to the housing, the connector housing having a fresh air inlet, a return air outlet, and an air outlet, the fresh air inlet being for communicating with the outside, the return air outlet being for communicating with the inside, and the air outlet being for communicating with the air inlet; the valve core being movably connected to the connector housing, such that the valve core changes the flow area of ​​the fresh air inlet by blocking the fresh air inlet; and a detection element for detecting air quality parameters of the air entering through the return air outlet, so as to adjust the area of ​​the fresh air inlet blocked by the valve core according to the air quality parameters.

[0006] Furthermore, the valve core is rotatably connected to the connector housing; the fresh air connector also includes a drive component, which is droopingly connected to the valve core to drive the valve core to rotate.

[0007] Furthermore, the detection device is a CO2 concentration detection device.

[0008] Furthermore, the testing component is mounted on the connector housing and located at the return air vent.

[0009] Further, the air conditioner further comprises a first temperature detecting member arranged on the joint shell and located at the air outlet to detect the inlet air temperature of the air passing through the air outlet; and a second temperature detecting member arranged on the shell to detect the indoor temperature.

[0010] Further, the joint shell and the shell are detachably connected.

[0011] Further, the fresh air joint further comprises a controller box and a first joint electrically connected with the controller box; and the shell is provided with a second joint matched with the first joint to make the first joint and the second joint contact and electrically connected when the fresh air joint is mounted on the shell.

[0012] According to another aspect of the present application, a control method of an air conditioner is provided, which is applicable to the air conditioner described above, and the control method of the air conditioner comprises: receiving an air quality parameter of the air passing through the return air outlet of the air conditioner detected by the detecting member of the air conditioner; and adjusting the position of the valve core part according to the air quality parameter to change the flow area of the fresh air inlet.

[0013] Further, the air quality parameter is CO2 concentration; and the method of adjusting the position of the valve core part according to the air quality parameter comprises: increasing the flow area of the fresh air inlet when the detected CO2 concentration increases.

[0014] Further, the method of adjusting the position of the valve core part according to the air quality parameter comprises: adjusting the opening degree of the fresh air inlet to 0 to close the fresh air inlet when C

[0015] Further, the control method of the air conditioner further comprises: receiving the inlet air temperature of the air passing through the air outlet detected by the first temperature detecting member; receiving the indoor temperature detected by the second temperature detecting member; calculating the difference ΔT between the inlet air temperature and the indoor temperature, and adjusting the first rotating speed of the evaporator side fan and the second rotating speed of the condenser side fan according to the ΔT; wherein the first rotating speed and the second rotating speed are increased when the ΔT increases.

[0016] Further, the method for adjusting the first rotating speed of the evaporator side fan and the second rotating speed of the condenser side fan according to the △T comprises: when the △T < 5℃, adjusting the first rotating speed to increase by a first preset value and adjusting the second rotating speed to increase by a second preset value; when 5℃≤△T < 10℃, adjusting the first rotating speed to increase by a third preset value and adjusting the second rotating speed to increase by a fourth preset value; when the △T ≥ 10℃ or the flow area of the fresh air inlet is the opening area of the fresh air inlet, adjusting the first rotating speed to increase to a first limit rotating speed and adjusting the second rotating speed to increase to a second limit rotating speed.

[0017] Further, the control method of the air conditioner comprises: judging whether the first joint and the second joint of the air conditioner are electrically connected; when the first joint and the second joint are electrically connected and a signal of turning on the fresh air function is received, adjusting the position of the valve core part according to the air quality parameter.

[0018] The air conditioner of the present application comprises a shell, a fresh air joint and a detection member, the shell has an air inlet; the fresh air joint comprises a joint shell and a valve core part, the joint shell is connected with the shell, the joint shell has a fresh air inlet, an air return inlet and an air outlet, the fresh air inlet is used for communicating with the outdoor, the air return inlet is used for communicating with the indoor, the air outlet is communicated with the air inlet, the fresh air of the outdoor enters the joint shell through the fresh air inlet, mixes with the indoor air entering the joint shell through the air return inlet, and finally is discharged into the air inlet through the air outlet; the valve core part is movably connected with the joint shell, so that the valve core part changes the flow area of the fresh air inlet by shielding the fresh air inlet, thereby controlling the input amount of the outdoor fresh air, and the air quality parameter of the air entering through the air return inlet is detected by the detection member, the area of the fresh air inlet shielded by the valve core part is adjusted according to the air quality parameter, so that the fresh air inlet does not need to be kept fully open when optimizing the indoor air quality, the energy consumption of the air conditioner is reduced under the condition of ensuring sufficient fresh air supplement, thereby solving the problem that the air conditioner in the prior art cannot achieve the relatively optimal effect of both supplementing sufficient fresh air and reducing the energy consumption of the whole machine. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings constituting a part of the specification of the present application serve to provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0020] Figure 1 A schematic view of the fresh air joint of the air conditioner according to the present application is shown;

[0021] Figure 2 A structural schematic view of the joint shell of the air conditioner according to the present application is shown;

[0022] Figure 3FIG. 1 shows a sectional view of a top perspective view of a fresh air joint of an air conditioner according to the present application;

[0023] Figure 4 FIG. 4 shows a position diagram of a valve core part when a fresh air inlet opening degree of the air conditioner according to the present application is 1 / 2;

[0024] Figure 5 FIG. 5 shows a position diagram of a valve core part when a fresh air inlet opening degree of the air conditioner according to the present application is 1 / 4;

[0025] Figure 6 FIG. 6 shows a position diagram of a valve core part when a fresh air inlet opening degree of the air conditioner according to the present application is 0;

[0026] Figure 7 FIG. 7 shows a position diagram of a valve core part when a fresh air inlet opening degree of the air conditioner according to the present application is 0;

[0027] Figure 8 FIG. 8 shows a position diagram of a valve core part when a fresh air inlet opening degree of the air conditioner according to the present application is 0;

[0028] Figure 9 FIG. 9 shows a diagram of a first joint of the air conditioner according to the present application;

[0029] Figure 10 FIG. 10 shows a diagram of a second joint of the air conditioner according to the present application;

[0030] Figure 11 FIG. 11 shows a matching diagram of the first joint and the second joint of the air conditioner according to the present application;

[0031] Figure 12 FIG. 12 shows a diagram of a housing connected with the fresh air joint of the air conditioner according to the present application;

[0032] Figure 13 FIG. 13 shows a partial flow chart of a control method of the air conditioner according to the present application;

[0033] Figure 14 FIG. 14 shows a whole flow chart of the control method of the air conditioner according to the present application.

[0034] Wherein, the above figures include the following reference signs:

[0035] 10, housing; 11, second joint; 20, air inlet; 30, fresh air joint; 31, joint shell; 32, valve core part; 33, fresh air inlet; 34, air return; 35, air outlet; 36, controller box; 37, first joint; 38, first valve core connecting part; 39, second valve core connecting part; 40, detecting member; 51, first temperature detecting member. DETAILED DESCRIPTION

[0036] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0038] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0039] The present application provides an air conditioner, please refer to Figures 1 to 12 , comprising a shell 10, the shell 10 has an air inlet 20, the air conditioner further comprises: fresh air joint 30, including joint shell 31 and valve core part 32, joint shell 31 is connected with the shell 10, joint shell 31 has fresh air inlet 33, return air inlet 34 and air outlet 35, fresh air inlet 33 is used for communicating with the outdoor, return air inlet 34 is used for communicating with the indoor, air outlet 35 is communicated with air inlet 20; valve core part 32 is movably connected with joint shell 31, so that valve core part 32 changes the flow area of fresh air inlet 33 by shielding fresh air inlet 33; detection piece 40 is used for detecting the air quality parameter of the air entering from return air inlet 34, so as to adjust the area of fresh air inlet 33 shielded by valve core part 32 according to the air quality parameter.

[0040] The air conditioner of the present application comprises a shell 10, a fresh air joint 30 and a detecting member 40, the shell 10 has an air inlet 20; the fresh air joint 30 comprises a joint shell 31 and a valve core 32, the joint shell 31 is connected with the shell 10, the joint shell 31 has a fresh air inlet 33, an air return 34 and an air outlet 35, the fresh air inlet 33 is used for communicating with the outdoor, the air return 34 is used for communicating with the indoor, the air outlet 35 communicates with the air inlet 20, the fresh air of the outdoor enters the joint shell 31 through the fresh air inlet 33, mixes with the indoor air entering the joint shell 31 through the air return 34, and finally is discharged into the air inlet 20 through the air outlet 35; the valve core 32 is movably connected with the joint shell 31, so that the valve core 32 changes the flow area of the fresh air inlet 33 by shielding the fresh air inlet 33, thereby controlling the size of the outdoor fresh air input, and the air quality parameter of the air entering through the air return 34 is detected by the detecting member 40, the area of the fresh air inlet 33 shielded by the valve core 32 is adjusted according to the air quality parameter, so that the fresh air inlet 33 does not need to be kept fully open when optimizing the indoor air quality, the energy consumption of the air conditioner is reduced under the condition of ensuring sufficient fresh air supply, thereby solving the problem that the air conditioner in the prior art cannot achieve the relatively optimal effect of both supplementing sufficient fresh air and reducing the energy consumption of the whole machine.

[0041] In the embodiment, the valve core 32 is rotatably connected with the joint shell 31; the fresh air joint 30 further comprises a driving member, the driving member is drivingly connected with the valve core 32 to drive the valve core 32 to rotate. Under the driving action of the driving member, the valve core 32 rotates, thereby changing the area of the fresh air inlet 33 shielded.

[0042] Optionally, the driving member is an electric motor.

[0043] In the embodiment, the detecting member 40 is a CO2 concentration detecting member. The freshness of the indoor air can be judged by the concentration of CO2, and then the required amount of fresh air entering can be judged. It should be noted that the detecting member 40 can also be used to detect other air quality parameters such as oxygen concentration, air inhalable particulate matter concentration, etc., to change the flow area of the fresh air inlet 33, and then adjust the size of the amount of fresh air entering.

[0044] In the embodiment, the detecting member 40 is arranged on the joint shell 31 and located at the air return 34.

[0045] In specific implementation, the detecting member 40 detects the indoor air entering the joint shell 31 through the air return 34 to judge the CO2 concentration in the indoor air.

[0046] In the embodiment, the air conditioner further comprises a first temperature detecting member 51 arranged on the joint shell 31 and located at the air outlet 35 to detect the inlet air temperature of the air passing through the air outlet 35; and a second temperature detecting member arranged on the shell 10 to detect the indoor temperature.

[0047] In the embodiment, the first temperature detecting member 51 and the second temperature detecting member are used to detect the inlet air temperature and the indoor temperature, so that the difference between the inlet air temperature and the indoor temperature can be determined, and the evaporator or the condenser of the air conditioner can be adjusted to rapidly cool or heat the mixed air at the air outlet 35, so that the mixed air can rapidly reach the required indoor temperature.

[0048] In the embodiment, the joint shell 31 and the shell 10 are detachably connected.

[0049] In the embodiment, the joint shell 31 and the shell 10 are detachably connected.

[0050] In the embodiment, the fresh air joint 30 further comprises a controller box 36 and a first joint 37, the first joint 37 is electrically connected with the controller box 36; the shell 10 is provided with a second joint 11 matched with the first joint 37, so that the first joint 37 and the second joint 11 are in contact and electrically connected when the fresh air joint 30 is installed on the shell 10.

[0051] Specifically, the first joint 37 is arranged on the side wall of the controller box 36, and the second joint 11 is arranged on the side wall of the shell 10 opposite to the side wall of the controller box 36; the first joint 37 protrudes from the side wall, and the second joint 11 is a recess arranged on the side wall of the shell 10, and the shape of the second joint 11 is matched with the first joint 37, so that the first joint 37 and the second joint 11 can be reliably contacted.

[0052] Specifically, the fresh air joint 30 further comprises a driving member arranged in the controller box 36, and the output end of the driving member is drivingly connected with the valve core 32 through the controller box 36; a mainboard is further arranged in the controller box 36, and the mainboard is in communication connection with the general controller of the air conditioner when the first joint 37 and the second joint 11 are electrically connected; and the mainboard is in communication connection with the driving member.

[0053] In the embodiment, the general controller of the air conditioner controls the driving member to drive the valve core 32 to rotate through the communication connection of the mainboard, so that the amount of fresh air entering the indoor can be changed.

[0054] Specifically, the fresh air joint 30 further comprises a first valve core connecting portion 38 and a second valve core connecting portion 39, both of which are connected with the valve core portion 32 and located at opposite sides of the valve core portion 32 respectively, and the first valve core connecting portion 38 is connected with the driving member; and the second valve core connecting portion 39 is movably connected with the joint shell 31.

[0055] In specific implementation, the first valve core connecting portion 38 is configured to enable the valve core portion 32 to rotate relative to the joint shell 31 under the driving of the driving member, and the second valve core connecting portion 39 is configured to stably support the valve core portion 32.

[0056] Specifically, the opening area of the fresh air inlet 33 is equal to the opening area of the return air outlet 34.

[0057] In specific implementation, the fresh air joint can keep the air inlet area of the return air outlet unchanged, keep the air volume supplied to the whole machine unchanged (i.e., keep the air outlet area of the air outlet 35 unchanged), and only control the size of the fresh air suction amount of the fresh air inlet 33. Optionally, the air conditioner is a mobile air conditioner.

[0058] The application further provides a control method of an air conditioner, which is suitable for the air conditioner in the above embodiment, and please refer to Figure 13 The control method of the air conditioner comprises the following steps.

[0059] S110, receiving an air quality parameter of air passing through the return air outlet 34 of the air conditioner detected by the detection member 40 of the air conditioner;

[0060] S120, adjusting the position of the valve core portion 32 according to the air quality parameter to change the flow area of the fresh air inlet 33.

[0061] In specific implementation, through the control method of the air conditioner, the valve core portion 32 can be adjusted and the flow area of the fresh air inlet 33 can be changed according to the air quality parameter of the air at the return air outlet 34 detected by the detection member 40, so that the amount of fresh air entering the joint shell 31 from the fresh air inlet 33 can be changed, and the indoor air can be mixed with the indoor air entering from the return air outlet 34 to reach the indoor air freshness required by the user.

[0062] In the embodiment, the air quality parameter is CO2 concentration; and the method of adjusting the position of the valve core portion 32 according to the air quality parameter comprises: increasing the flow area of the fresh air inlet 33 when the CO2 concentration is detected to increase. The increase of the CO2 concentration indicates the decrease of the freshness of the indoor air, and at this time, the flow area of the fresh air inlet 33 needs to be increased to enable the outdoor fresh air to enter the indoor to adjust the freshness of the indoor air.

[0063] In the embodiment, please refer to Figure 14According to the method for adjusting the position of the valve core part 32 according to the air quality parameter, when C < X1, the opening degree of the fresh air inlet 33 is adjusted to 0, so that the fresh air inlet 33 is closed; when X1≤C<X2, the opening degree of the fresh air inlet 33 is adjusted to 1 / 4, so that the flow area of the fresh air inlet 33 is 1 / 4 of the opening area of the fresh air inlet 33; when X2≤C<X3, the opening degree of the fresh air inlet 33 is adjusted to 1 / 2, so that the flow area of the fresh air inlet 33 is 1 / 2 of the opening area of the fresh air inlet 33; when X3≤C<X4, the opening degree of the fresh air inlet 33 is adjusted to 3 / 4, so that the flow area of the fresh air inlet 33 is 3 / 4 of the opening area of the fresh air inlet 33; when C≥X4, the opening degree of the fresh air inlet 33 is adjusted to 1, so that the flow area of the fresh air inlet 33 is the opening area of the fresh air inlet 33; wherein C is the CO2 concentration; X1 is a first preset CO2 concentration, X2 is a second preset CO2 concentration, X3 is a third preset CO2 concentration, and X4 is a fourth preset CO2 concentration, and X1 < X2 < X3 < X4.

[0064] In particular embodiments, the opening degree of the fresh air inlet 33 can be adjusted according to the comparison between the indoor CO2 concentration and different preset concentrations, so as to change the amount of fresh air entering the room and control the purification speed of the indoor air.

[0065] Specifically, the values of X1, X2, X3 and X4 can be set according to the user's needs for the freshness of the indoor air.

[0066] In other embodiments, the opening degree of the fresh air inlet 33 can be steplessly adjusted, so as to control the amount of fresh air in a smaller range.

[0067] In this embodiment, the control method of the air conditioner further includes: receiving the inlet air temperature of the air passing through the air outlet 35 detected by the first temperature detection member 51; receiving the indoor temperature detected by the second temperature detection member; calculating the difference ΔT between the inlet air temperature and the indoor temperature, and adjusting the first rotating speed of the evaporator side fan and the second rotating speed of the condenser side fan according to the ΔT; wherein when the ΔT increases, the first rotating speed and the second rotating speed are increased.

[0068] In particular embodiments, increasing the first rotating speed and the second rotating speed can accelerate the speed at which the inlet air temperature reaches the indoor temperature, so as to reduce the ΔT and rapidly reach the indoor temperature required by the user, thereby improving the cooling or heating capacity of the air conditioner.

[0069] In this embodiment, please refer to Figure 14, the method for adjusting the first rotating speed of the evaporator side fan and the second rotating speed of the condenser side fan according to the △T comprises: when the △T < 5℃, adjusting the first rotating speed to increase by a first preset value and adjusting the second rotating speed to increase by a second preset value; when 5℃≤△T < 10℃, adjusting the first rotating speed to increase by a third preset value and adjusting the second rotating speed to increase by a fourth preset value; when the △T≥10℃, or the flow area of the fresh air inlet 33 is the opening area of the fresh air inlet 33, adjusting the first rotating speed to increase to a first limit rotating speed and adjusting the second rotating speed to increase to a second limit rotating speed.

[0070] In particular implementation, by the method for adjusting the first rotating speed and the second rotating speed according to the △T, the precise control of the evaporator side fan and the condenser side fan of the air conditioner can be realized, the instability of the air conditioner performance caused by the excessively large increase of the first rotating speed and the second rotating speed is avoided, and the refrigeration or heating capacity of the whole machine is improved, so that the performance stability of the whole machine is ensured.

[0071] Specifically, the first preset value is 10% to 15% of the current rotating speed, the second preset value is 10% to 15% of the current rotating speed, the third preset value is 15% to 20% of the current rotating speed, the fourth preset value is 15% to 20% of the current rotating speed, and the first limit rotating speed and the second limit rotating speed are the highest rotating speeds of the evaporator side fan and the condenser side fan respectively. It should be noted that the first preset value, the second preset value, the third preset value and the fourth preset value can be adjusted according to different air conditioners and fan characteristics. In particular implementation, after the step “when C < X1, adjusting the opening degree of the fresh air inlet 33 to 0 to make the fresh air inlet 33 closed; when X1≤C < X2, adjusting the opening degree of the fresh air inlet 33 to 1 / 4 to make the flow area of the fresh air inlet 33 be 1 / 4 of the opening area of the fresh air inlet 33; when X2≤C < X3, adjusting the opening degree of the fresh air inlet 33 to 1 / 2 to make the flow area of the fresh air inlet 33 be 1 / 2 of the opening area of the fresh air inlet 33; when X3≤C < X4, adjusting the opening degree of the fresh air inlet 33 to 3 / 4 to make the flow area of the fresh air inlet 33 be 3 / 4 of the opening area of the fresh air inlet 33” is executed, the step “adjusting the first rotating speed of the evaporator side fan and the second rotating speed of the condenser side fan according to the △T” is executed.

[0072] In the embodiment, the control method of the air conditioner comprises: judging whether the first joint 37 and the second joint 11 of the air conditioner are electrically connected; when the first joint 37 and the second joint 11 are electrically connected and a signal of turning on the fresh air function is received, adjusting the position of the valve core part 32 according to the air quality parameter.

[0073] In the embodiment, when the joint shell 31 is connected with the shell 10, the first joint 37 of the air conditioner is electrically connected with the second joint 11, at this time, the outdoor fresh air enters the joint shell 31, and the amount of the fresh air entering the joint shell 31 can be adjusted according to the position of the valve core part 32, at this time, the air conditioner is in the fresh air mode, and the air freshness of the indoor can be changed.

[0074] In the embodiment, in the state of opening the fresh air function, the opening degree of the fresh air pipe, that is, the size of the input fresh air amount, can be judged by detecting the carbon dioxide concentration of the indoor air, and based on the temperature difference (△T) between the mixed air of the fresh air and the indoor return air and the indoor temperature, the rotating speed of the fan is automatically adjusted, so that the performance of the whole machine is stable under the condition of ensuring the supplement of sufficient fresh air amount.

[0075] In other embodiments, the air conditioner is a variable frequency air conditioner, and the mixed gas entering from the air outlet is processed by adjusting the frequency of the compressor or the opening degree of the throttle valve.

[0076] From the above description, it can be seen that the above-mentioned embodiments of the air conditioner of the present application achieve the following technical effects:

[0077] The air conditioner of the present application comprises a shell 10, a fresh air joint 30 and a detection part 40, the shell 10 has an air inlet 20; the fresh air joint 30 comprises a joint shell 31 and a valve core part 32, the joint shell 31 is connected with the shell 10, the joint shell 31 has a fresh air inlet 33, a return air inlet 34 and an air outlet 35, the fresh air inlet 33 is used for being communicated with the outdoor, the return air inlet 34 is used for being communicated with the indoor, the air outlet 35 is communicated with the air inlet 20, the fresh air of the outdoor enters the joint shell 31 from the fresh air inlet 33, is mixed with the indoor air entering the joint shell 31 from the return air inlet 34, and finally is discharged into the air inlet 20 from the air outlet 35; the valve core part 32 is movably connected with the joint shell 31, so that the valve core part 32 changes the flow area of the fresh air inlet 33 by shielding the fresh air inlet 33, thereby controlling the size of the outdoor fresh air input amount, and the detection part 40 detects the air quality parameter of the air entering from the return air inlet 34, and adjusts the area of the fresh air inlet 33 shielded by the valve core part 32 according to the air quality parameter, so that the fresh air inlet 33 does not need to be kept fully open when optimizing the indoor air quality, the energy consumption of the air conditioner is reduced under the condition of ensuring the supplement of sufficient fresh air amount, and the problem that the air conditioner in the prior art cannot achieve the relatively optimal effect of supplementing sufficient fresh air and reducing the energy consumption of the whole machine is solved.

[0078] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

[0079] Spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device described is turned over in use, a downwardly position element or feature can then be oriented upwardly. Thus, the example term "below" can encompass both an orientation of below and above. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", "third", etc. can be used herein to describe various elements, regions, layers and / or sections but are not intended to be used to designate a particular order or sequence unless otherwise specifically indicated.

[0080] The specific embodiments of the present application have been described above for the purpose of clarity and are not intended to be limiting of the application. Any modifications of the application, which come within the spirit and scope of the application, are intended to be included.

Claims

1. An air conditioner comprising a casing (10) having an air inlet (20), characterized in that, The air conditioner further comprises: The fresh air joint (30) further comprises a controller box (36) and a first joint (37), the first joint (37) is electrically connected with the controller box (36); the shell (10) is provided with a second joint (11) matched with the first joint (37), so that the first joint (37) and the second joint (11) are in contact when the fresh air joint (30) is installed on the shell (10), and the first joint (37) and the second joint (11) are electrically connected. The valve core part (32) is rotatably connected with the joint shell (31); the fresh air joint (30) further comprises a driving member, the driving member is drivingly connected with the valve core part (32) to drive the valve core part (32) to rotate. The detection member (40) is a CO2 concentration detection member. The detection member (40) is arranged on the joint shell (31) and located at the return air port (34).

2. The air conditioner of claim 1, wherein The air conditioner further comprises:

3. The air conditioner of claim 1, wherein A first temperature detection member (51) is arranged on the joint shell (31) and located at the air outlet (35) to detect the air inlet temperature of air passing through the air outlet (35); 4. The air conditioner of claim 1, wherein A second temperature detection member is arranged on the shell (10), and the second temperature detection member is used to detect the indoor temperature.

5. The air conditioner according to any one of claims 1 to 4, characterized by The control method of the air conditioner as claimed in any one of claims 1 to 5 comprises: Receiving the air quality parameter of air passing through the return air port (34) of the air conditioner detected by the detection member (40) of the air conditioner; Adjusting the position of the valve core part (32) according to the air quality parameter to change the flow area of the fresh air inlet (33).

6. A control method of an air conditioner, characterized by, The air quality parameter is CO2 concentration; the method for adjusting the position of the valve core part (32) according to the air quality parameter comprises: When the increase of CO2 concentration is detected, the flow area of the fresh air inlet (33) is increased. The method for adjusting the position of the valve core part (32) according to the air quality parameter comprises:

7. The control method of the air conditioner according to claim 6, wherein ​ ​ 8. The control method of the air conditioner according to claim 7, characterized by, ​ When C When X1≤C When X2≤C When X3≤C When C≥X4, the opening of the fresh air inlet (33) is adjusted to 1, so that the flow area of the fresh air inlet (33) is the opening area of the fresh air inlet (33); Wherein, C is the CO2 concentration; X1 is the first preset CO2 concentration, X2 is the second preset CO2 concentration, X3 is the third preset CO2 concentration, X4 is the fourth preset CO2 concentration, X1X2X3X4.

9. The control method of the air conditioner according to claim 6, characterized by, The control method of the air conditioner further comprises: Receiving the inlet air temperature of the air passing through the air outlet (35) detected by the first temperature detection member (51); Receiving the indoor temperature detected by the second temperature detection member; Calculating the difference ΔT between the inlet air temperature and the indoor temperature, and adjusting the first rotating speed of the evaporator side fan and the second rotating speed of the condenser side fan according to ΔT; wherein when ΔT increases, the first rotating speed and the second rotating speed are increased.

10. The control method of the air conditioner according to claim 9, characterized by, The method of adjusting the first rotating speed of the evaporator side fan and the second rotating speed of the condenser side fan according to ΔT, comprising: When ΔT<5℃, the first preset value is adjusted to increase the first rotating speed, and the second preset value is adjusted to increase the second rotating speed; When 5℃≤ΔT<10℃, the third preset value is adjusted to increase the first rotating speed, and the fourth preset value is adjusted to increase the second rotating speed; When ΔT≥10℃, or the flow area of the fresh air inlet (33) is the opening area of the fresh air inlet (33), the first rotating speed is adjusted to increase to the first limit rotating speed, and the second rotating speed is adjusted to increase to the second limit rotating speed.

11. The control method of an air conditioner according to claim 6, wherein The control method of the air conditioner comprises: Judging whether the first joint (37) and the second joint (11) of the air conditioner are electrically connected; When the first joint (37) and the second joint (11) are electrically connected and the signal of opening the fresh air function is received, the position of the valve core part (32) is adjusted according to the air quality parameter.

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