Air conditioner indoor unit and air conditioner

Abstract

The utility model provides an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a shell provided with a first mounting cavity, and the cavity wall of the first mounting cavity is provided with a first air opening and a second air opening; the fan assembly is arranged in the first mounting cavity and comprises a wind wheel, a volute and a first driving mechanism, the wind wheel is arranged in the volute and is in transmission connection with the first driving mechanism, and the first driving mechanism is arranged to drive the wind wheel to rotate; the wind shield is provided with a third air opening and connected with the volute, the side, facing the volute, of the wind shield is a concave side, and an outlet of the volute is located in the concave side and communicated with the third air opening; and the second driving mechanism is arranged to drive the wind shield and the volute to rotate together, and the wind shield and the volute are provided with a first stop position and a second stop position. According to the air conditioner indoor unit, forward air outlet can be achieved when the air conditioner indoor unit conducts refrigeration, downward air outlet can be achieved when the air conditioner indoor unit conducts heating, and therefore the refrigeration effect and the heating effect of the air conditioner indoor unit are both good.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat pump equipment technical field more specifically, relate to a kind of air conditioner indoor unit and air conditioner. BACKGROUND

[0002] A ducted air conditioner, comprising a shell, a fan assembly and a heat exchanger, a middle partition is vertically arranged in the shell, the middle partition divides the interior of the shell into a second installation cavity and a first installation cavity, the middle partition is provided with a first air port, the bottom wall of the first installation cavity is provided with a second air port, the side wall of the second installation cavity opposite to the middle partition is provided with a fourth air port, the fan assembly is arranged in the first installation cavity, and the heat exchanger is arranged in the second installation cavity. The fan assembly is arranged to form a wind beam flowing from the second air port to the fourth air port through the first installation cavity, the first air port and the second installation cavity. When heating, the ducted air conditioner cannot achieve rapid landing of hot air, and the heating effect is not good. SUMMARY

[0003] The utility model embodiment provides a kind of air conditioner indoor unit, comprising: shell, with first installation cavity, the cavity wall of the first installation cavity has first air port and second air port;Fan assembly, it is arranged in the first installation cavity, and it includes wind wheel, volute and first drive mechanism, the wind wheel is arranged in the volute, and is transmissionally connected with the first drive mechanism, and the first drive mechanism is arranged to drive the wind wheel to rotate;Baffle with third air port is connected with the volute, the side of the baffle towards the volute is recessed side, the outlet of the volute is located in the recessed side, and is communicated with the third air port;And second drive mechanism, it is arranged to drive the baffle and the volute rotate together, and the baffle and the volute have first stop position and second stop position;Based on the baffle and the volute are located at the first stop position, then the volute is located at the side of the baffle away from the first air port, the third air port is communicated with the first air port, and the inlet of the volute is communicated with the second air port;Based on the baffle and the volute are located at the second stop position, then the volute is located at the side of the baffle away from the second air port, the third air port is communicated with the second air port, and the inlet of the volute is communicated with the first air port.

[0004] In some exemplary embodiments, based on the baffle and the volute are located at the first stop position, then the baffle separates the interior of the first installation cavity into first sub-cavity and second sub-cavity, the first sub-cavity is located between the third air port and the first air port, and communicates the third air port and the first air port, and the second sub-cavity is located between the inlet of the volute and the second air port, and communicates the inlet of the volute and the second air port.

[0005] In some example embodiments, a side of the baffle plate facing away from the volute is provided with a first abutting portion and a second abutting portion, and a cavity wall of the first mounting cavity is provided with a first abutting matching portion and a second abutting matching portion; in the circumferential direction of the volute: the first abutting portion and the second abutting portion are located on both sides of the third air port, and the first abutting matching portion and the second abutting matching portion are located on both sides of the first air port and sealingly correspond to the first abutting portion and the second abutting portion, respectively, and the first abutting portion, the second abutting portion, the first abutting matching portion, the second abutting matching portion, the baffle plate and the first air port form the first sub-cavity, and the first abutting portion, the second abutting portion, the first abutting matching portion, the second abutting matching portion, the baffle plate and the second air port form the second sub-cavity.

[0006] In some example embodiments, one of the first abutting portion and the second abutting portion is an abutting plate, and one of the first abutting matching portion and the second abutting matching portion is a cavity wall of the first mounting cavity, and the other is an abutting plate, and each of the abutting plates extends in the axial direction of the volute.

[0007] In some example embodiments, in the axial direction of the volute: both ends of the baffle plate sealingly correspond to the opposite side walls of the first mounting cavity.

[0008] In some example embodiments, based on the baffle plate and the volute being located at the second stop position, the baffle plate divides the interior of the first mounting cavity into a third sub-cavity and a fourth sub-cavity, the third sub-cavity is located between the third air port and the second air port and communicates the third air port and the second air port, and the fourth sub-cavity is located between the inlet of the volute and the first air port and communicates the inlet of the volute and the first air port.

[0009] In some example embodiments, a side of the baffle plate facing away from the volute is provided with a third abutting portion and a fourth abutting portion, and a cavity wall of the first mounting cavity is provided with a third abutting matching portion and a fourth abutting matching portion; in the circumferential direction of the volute: the third abutting portion and the fourth abutting portion are located on both sides of the third air port, and the third abutting matching portion and the fourth abutting matching portion are located on both sides of the second air port and sealingly correspond to the third abutting portion and the fourth abutting portion, respectively, and the third abutting portion, the fourth abutting portion, the third abutting matching portion, the fourth abutting matching portion, the baffle plate and the second air port form the third sub-cavity, and the third abutting portion, the fourth abutting portion, the third abutting matching portion, the fourth abutting matching portion, the baffle plate and the first air port form the fourth sub-cavity.

[0010] In some example embodiments, the third abutting part and the fourth abutting part are abutting plates, and the third abutting matching part and the fourth abutting matching part are cavity walls of the first installation cavity.

[0011] In some example embodiments, in the axial direction of the volute: two ends of the wind baffle are sealingly matched with the opposite side walls of the first installation cavity.

[0012] In some example embodiments, in the axial direction of the volute: one end of the wind baffle is connected with a driven wheel through a plurality of rib plates, and the other end is connected with a mounting disc through a plurality of rib plates, the driven wheel and the mounting disc are rotatably connected with the opposite side walls of the first installation cavity, and the volute is located between the driven wheel and the mounting disc; the second driving mechanism comprises a second driving motor and a driving wheel, and the driving wheel is arranged on a rotating shaft of the second driving motor and is in transmission matching with the driven wheel.

[0013] In some example embodiments, the volute and the wind wheel comprise a plurality of groups, the first driving mechanism comprises one or more first driving motors, each of the first driving motors is located between two adjacent volutes, and a plurality of wind wheels are arranged on rotating shafts of the first driving motors.

[0014] In some example embodiments, an inner portion of the shell is vertically provided with a partition plate, the partition plate separates the inner portion of the shell into a second installation cavity and the first installation cavity, the first air port is located on the partition plate, the second air port is located on a bottom wall of the first installation cavity, and a side wall of the second installation cavity opposite to the partition plate is provided with a fourth air port.

[0015] The utility model embodiment further provides an air conditioner, comprising the air conditioner indoor unit of any one of the above embodiments.

[0016] The air conditioner indoor unit provided by the embodiment of the utility model, when the baffle and the volute are located at the first stop position, the volute is located at the side of the baffle which is away from the first air inlet, the third air inlet is communicated with the first air inlet, the inlet of the volute is communicated with the second air inlet, the first driving mechanism is operated, then the wind beam which flows from the second air inlet to the first air inlet through the volute is formed in the first installation cavity; when the baffle and the volute are located at the second stop position, the volute is located at the side of the baffle which is away from the second air inlet, the third air inlet is communicated with the second air inlet, the inlet of the volute is communicated with the first air inlet, the first driving mechanism is operated, then the wind beam which flows from the first air inlet to the second air inlet through the volute is formed in the first installation cavity; the air which is blown out from one of the first air inlet and the second air inlet of the air conditioner indoor unit is set to be blown forward, and the other is set to be blown downward, through reasonably selecting the stop position of the combined structure of the baffle and the volute, the air conditioner indoor unit can realize the air outlet forward when cooling and the air outlet downward when heating, so that the cooling effect and the heating effect of the air conditioner indoor unit are both good.

[0017] Other features and advantages of the utility model will be set forth in the following description of the utility model, and, in part, will become apparent to those skilled in the art from the description, or recognized by practicing the utility model as hereinafter described. The objects and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the technical scheme of the utility model and constitute a part of the specification, and are used for explaining the technical scheme of the utility model together with the embodiments of the utility model, and do not constitute the limitation to the technical scheme of the utility model.

[0019] Figure 1 It is the left view structure cross section schematic view of the air conditioner indoor unit provided by some embodiments of the utility model in the cooling operation state;

[0020] Figure 2 It is the left view structure cross section schematic view of the air conditioner indoor unit provided by some embodiments of the utility model in the cooling operation state; Figure 1

[0021] Figure 3 It is the left view structure cross section schematic view of the air conditioner indoor unit provided by some embodiments of the utility model in the cooling operation state; Figure 1

[0022] Figure 4 It is the left view structure cross section schematic view of the air conditioner indoor unit provided by some embodiments of the utility model in the cooling operation state; Figure 3

[0023] Figure 5 It is the left view structure cross section schematic view of the air conditioner indoor unit provided by some embodiments of the utility model in the cooling operation state; Figure 3

[0024] Figure 6 It is the left view structure cross section schematic view of the air conditioner indoor unit provided by some embodiments of the utility model in the cooling operation state; ​​​​

[0025] Figure 7 The method for executing the heat exchanger cleaning mode is provided.

[0026] Correspondence between reference signs and component names is as follows:

[0027] 100 shell, 110 first mounting cavity, 111 first air port, 112 second air port, 113 first abutting fitting part, 114 second abutting fitting part, 115 third abutting fitting part, 116 fourth abutting fitting part, 120 second mounting cavity, 121 fourth air port, 130 first sub-cavity, 140 second sub-cavity, 150 third sub-cavity, 160 fourth sub-cavity, 200 fan assembly, 210 fan wheel, 220 volute, 230 first driving mechanism, 300 baffle, 310 third air port, 320 first abutting part, 330 second abutting part, 340 third abutting part, 350 fourth abutting part, 360 rib plate, 370 driven wheel, 380 mounting disc, 400 second driving mechanism, 410 second driving motor, 420 driving wheel, 430 support, 500 partition plate, 600 heat exchanger. DETAILED DESCRIPTION

[0028] To make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the following will combine the drawings to make a detailed description of the embodiments of the utility model. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other at will without conflict.

[0029] The air conditioner indoor unit provided by the embodiments of the utility model, like Figures 1 to 5As shown, the air conditioner comprises: a housing 100 having a first mounting cavity 110, a cavity wall of the first mounting cavity 110 being provided with a first air port 111 and a second air port 112; a fan assembly 200 arranged in the first mounting cavity 110 and comprising a fan wheel 210, a volute 220 and a first driving mechanism 230, the fan wheel 210 being arranged in the volute 220 and in driving connection with the first driving mechanism 230, the first driving mechanism 230 being configured to drive the fan wheel 210 to rotate; a baffle plate 300 provided with a third air port 310, the baffle plate 300 being arranged along a circumferential direction of the volute 220 and connected with the volute 220, a side of the baffle plate 300 facing the volute 220 being a concave side, an outlet of the volute 220 being located in the concave side and in communication with the third air port 310; and a second driving mechanism 400 in driving connection with the baffle plate 300 or the volute 220, the second driving mechanism 400 being configured to drive the baffle plate 300 and the volute 220 (in combination) to rotate around the fan wheel 210, and the baffle plate 300 and the volute 220 (in combination) having a first stop position and a second stop position. When the baffle plate 300 and the volute 220 (in combination) are located at the first stop position, the volute 220 is located at a side of the baffle plate 300 facing away from the first air port 111, the third air port 310 is in communication with the first air port 111, and an inlet of the volute 220 is in communication with the second air port 112. When the baffle plate 300 and the volute 220 (in combination) are located at the second stop position, the volute 220 is located at a side of the baffle plate 300 facing away from the second air port 112, the third air port 310 is in communication with the second air port 112, and the inlet of the volute 220 is in communication with the first air port 111.

[0030] When the baffle 300 and the volute 220 are located at the first stop position, the volute 220 is located at the side of the baffle 300 which is away from the first air inlet 111, the third air inlet 310 is communicated with the first air inlet 111, the inlet of the volute 220 is communicated with the second air inlet 112, and the first driving mechanism 230 is operated, then the air beam is formed in the first installation cavity 110 from the second air inlet 112 to the first air inlet 111 through the volute 220; when the baffle 300 and the volute 220 are located at the second stop position, the volute 220 is located at the side of the baffle 300 which is away from the second air inlet 112, the third air inlet 310 is communicated with the second air inlet 112, the inlet of the volute 220 is communicated with the first air inlet 111, and the first driving mechanism 230 is operated, then the air beam is formed in the first installation cavity 110 from the first air inlet 111 to the second air inlet 112 through the volute 220; the air blown out from one of the first air inlet 111 and the second air inlet 112 is set to be blown forward, and the air blown out from the other is set to be blown downward, and by reasonably selecting the stop positions of the combined structure of the baffle 300 and the volute 220, the air conditioner indoor unit can realize the forward air outlet during the cooling and the downward air outlet during the heating, so that the cooling effect and the heating effect of the air conditioner indoor unit are both good.

[0031] The baffle 300 and the volute 220 are located at the first stop position, the first driving mechanism 230 is operated, the first air inlet 111 is the air inlet, the air blown out from the second air inlet 112 is blown downward, and the air conditioner indoor unit is operated in the heating mode at this time; the baffle 300 and the volute 220 are located at the second stop position, the first driving mechanism 230 is operated, the second air inlet 112 is the air inlet, and the air blown out from the first air inlet 111 is blown forward, and the air conditioner indoor unit is operated in the cooling mode at this time;

[0032] The baffle 300 and the volute 220 are located at the first stop position, the first driving mechanism 230 is operated, the second air inlet 112 is the air inlet, the air blown out from the first air inlet 111 is blown downward, and the air conditioner indoor unit is operated in the heating mode at this time; the baffle 300 and the volute 220 are located at the second stop position, the first driving mechanism 230 is operated, the first air inlet 111 is the air inlet, and the air blown out from the second air inlet 112 is blown forward, and the air conditioner indoor unit is operated in the cooling mode at this time;

[0033] The above can achieve the purpose of the application, and the design idea is not deviated from the design idea of the application, and will not be described here, and all should be within the protection scope of the application.

[0034] In some embodiments, as Figures 1 to 3As shown, the inner part of the shell 100 is provided with a partition plate 500, which separates the inner part of the shell 100 into a second mounting cavity 120 and a first mounting cavity 110. The first air port 111 is located on the partition plate 500, the second air port 112 is located on the bottom wall of the first mounting cavity 110, and the side wall of the second mounting cavity 120 opposite to the partition plate 500 is provided with a fourth air port 121. The second mounting cavity 120 is further provided with a heat exchanger 600, and the first air port 111 and the fourth air port 121 are located on both sides of the heat exchanger 600.

[0035] In some examples, as Figure 1 As shown, based on the baffle 300 and the volute 220 being located at the first stop position, the baffle 300 separates the inner part of the first mounting cavity 110 into a first sub-cavity 130 and a second sub-cavity 140. The first sub-cavity 130 is located between and communicates with the third air port 310 and the first air port 111, and the second sub-cavity 140 is located between and communicates with the inlet of the volute 220 and the second air port 112. The first driving mechanism 230 operates, and the first mounting cavity 110 forms a wind beam flowing from the second air port 112 to the first air port 111 through the second sub-cavity 140, the volute 220 and the first sub-cavity 130 in sequence, and the second mounting cavity 120 forms a wind beam flowing from the first air port 111 to the fourth air port 121. The wind blown out of the fourth air port 121 blows out of the air conditioner indoor unit and blows forward. At this time, the air conditioner indoor unit performs cooling operation.

[0036] In some embodiments, as Figure 1 As shown, the side of the baffle 300 away from the volute 220 is provided with a first abutting portion 320 and a second abutting portion 330, and the cavity wall of the first mounting cavity 110 is provided with a first abutting matching portion 113 and a second abutting matching portion 114. In the circumferential direction of the volute 220, the first abutting portion 320 and the second abutting portion 330 are located on the upper and lower sides of the third air port 310, and the first abutting matching portion 113 and the second abutting matching portion 114 are located on the upper and lower sides of the first air port 111 and sealingly correspond to the first abutting portion 320 and the second abutting portion 330. In the axial direction of the volute 220, the two ends of the baffle 300 sealingly correspond to the opposite side walls of the first mounting cavity 110. The first abutting portion 320, the second abutting portion 330, the first abutting matching portion 113, the second abutting matching portion 114, the baffle 300 and the first air port 111 form the first sub-cavity 130, and the first abutting portion 320, the second abutting portion 330, the first abutting matching portion 113, the second abutting matching portion 114, the baffle 300 and the second air port 112 form the second sub-cavity 140.

[0037] In some embodiments, as Figure 1As shown, one of the first abutting portion 320 and the second abutting portion 330 is an abutting plate, one of the first abutting matching portion 113 and the second abutting matching portion 114 is a cavity wall of the first mounting cavity 110, and the other is an abutting plate, and each abutting plate extends along the axial direction of the volute 220. It can be that the first abutting portion 320 is located above the third air outlet 310 and is formed by bending the upper end of the baffle 300, the first abutting portion 320 is an abutting plate, the second abutting portion 330 is located below the third air outlet 310 and is located in front of the second air outlet 112, the first abutting matching portion 113 is located on the top wall of the first mounting cavity 110, the second abutting matching portion 114 is located below the first air outlet 111 and is located in front of the second air outlet 112, and the second abutting matching portion 114 is an abutting plate erected on the bottom wall of the first mounting cavity 110.

[0038] In some examples, as Figure 2 As shown, based on the baffle 300 and the volute 220 being located at the second stop position, the baffle 300 divides the interior of the first mounting cavity 110 into a third sub-cavity 150 and a fourth sub-cavity 160, the third sub-cavity 150 is located between the third air outlet 310 and the second air outlet 112 and communicates the third air outlet 310 and the second air outlet 112, and the fourth sub-cavity 160 is located between the inlet of the volute 220 and the first air outlet 111 and communicates the inlet of the volute 220 and the first air outlet 111. The first driving mechanism 230 operates, and the first mounting cavity 110 forms a wind beam that flows from the first air outlet 111 to the second air outlet 112 in sequence through the fourth sub-cavity 160, the volute 220 and the third sub-cavity 150, and the second mounting cavity 120 forms a wind beam that flows from the fourth air outlet 121 to the first air outlet 111, and the wind blown out from the second air outlet 112 blows out the air conditioner indoor unit and blows downward, at this time the air conditioner indoor unit performs heating operation.

[0039] In some embodiments, as Figure 2As shown, the side of the baffle plate 300 facing away from the volute 220 is provided with a third abutting portion 340 and a fourth abutting portion 350, and the cavity wall of the first mounting cavity 110 is provided with a third abutting matching portion 115 and a fourth abutting matching portion 116; in the circumferential direction of the volute 220: the third abutting portion 340 and the fourth abutting portion 350 are located on the front and back sides of the third air port 310, and the third abutting matching portion 115 and the fourth abutting matching portion 116 are located on the front and back sides of the second air port 112 and correspondingly seal with the third abutting portion 340 and the fourth abutting portion 350; in the axial direction of the volute 220: the two ends of the baffle plate 300 correspondingly seal with the opposite side walls of the first mounting cavity 110. The third abutting portion 340, the fourth abutting portion 350, the third abutting matching portion 115, the fourth abutting matching portion 116, the baffle plate 300 and the second air port 112 form a third sub-cavity 150, and the third abutting portion 340, the fourth abutting portion 350, the third abutting matching portion 115, the fourth abutting matching portion 116, the baffle plate 300 and the first air port 111 form a fourth sub-cavity 160.

[0040] In some embodiments, as shown in Figure 2 The third abutting portion 340 and the fourth abutting portion 350 are both abutting plates, and the third abutting matching portion 115 and the fourth abutting matching portion 116 are the cavity wall of the first mounting cavity 110, and each abutting plate extends in the axial direction of the volute 220. It can be that the third abutting portion 340 is located between the first abutting portion 320 and the second abutting portion 330, the fourth abutting portion 350 is located on the upper side of the third abutting portion 340 and is formed by bending the rear end of the baffle plate 300, the third abutting matching portion 115 is located on the bottom wall of the first mounting cavity 110 and is on the rear side of the second abutting matching portion 114, and the fourth abutting matching portion 116 is located on the rear side wall of the first mounting cavity 110.

[0041] In some examples, as shown in Figures 3 to 5As shown in the drawings, in the axial direction of the volute 220: one end of the baffle 300 is connected with the driven wheel 370 through a plurality of rib plates 360, and the other end is connected with the mounting disc 380 through a plurality of rib plates 360, the driven wheel 370 and the mounting disc 380 are rotatably connected with the opposite side walls of the first mounting cavity 110 one by one, and the volute 220 is located between the driven wheel 370 and the mounting disc 380; the second driving mechanism 400 comprises a second driving motor 410 and a driving wheel 420, the second driving motor 410 is mounted on the cavity wall of the first mounting cavity 110 through a support 430, the driving wheel 420 is arranged on the rotating shaft of the second driving motor 410 and is in transmission cooperation with the driven wheel 370, and the driving wheel 420 and the driven wheel 370 are a set of meshing gears with a transmission ratio of 1:18. The baffle 300, the rib plate 360, the driven wheel 370 and the mounting disc 380 are integrally injection molded by using a plastic material, and have the advantages of light weight and good strength. In the axial direction of the volute 220: a plurality of rib plates 360 at each end of the baffle are arranged at intervals along the circumferential direction of the volute 220, so that the material consumption and the product weight can be reduced.

[0042] In some examples, a filter screen is arranged at the second air inlet 112 and / or the fourth air inlet 121.

[0043] In some examples, as Figure 3 shown, the volute 220 and the wind wheel 210 comprise a plurality of groups, the first driving mechanism 230 comprises one or more first driving motors, each first driving motor is located between two adjacent volutes 220, and a plurality of wind wheels 210 are arranged on the rotating shaft of the first driving motor. In some embodiments, the volute 220 and the wind wheel 210 comprise two groups, the first driving mechanism 230 comprises one first driving motor, the first driving motor is located between the two volutes 220, two wind wheels 210 are arranged on the rotating shaft of the first driving motor, and the first driving motor is arranged as a double-output-shaft motor.

[0044] The air conditioner (not shown in the drawings) provided by the embodiment of the utility model has all the advantages of the air conditioner indoor unit provided by any one of the above-mentioned embodiments, and details are not repeated here.

[0045] The air conditioner has all the advantages of the air conditioner indoor unit provided by any one of the above-mentioned embodiments, and details are not repeated here.

[0046] The application provides a control method of an air conditioner, as Figure 6 shown, comprising:

[0047] obtaining an operation mode;

[0048] if the operation mode is a heating operation mode, controlling the second driving mechanism 400 to drive the baffle 300 and the volute 220 to rotate to a second stop position, accumulating and recording the operation time T1 of the heating operation mode, and determining whether a first determination condition T1≥Ts1 is established;

[0049] If T1≥Ts1 is true, execute the heat exchanger cleaning mode, and make T1=0;

[0050] If T1≥Ts1 is false, execute the step of accumulating the running time T1 of the heating operation mode, and determining whether the first determination condition T1≥Ts1 is true;

[0051] If the operation mode is the cooling operation mode, control the second driving mechanism 400 to drive the baffle 300 and the volute 220 to rotate together to the first stop position, accumulate the running time T2 of the cooling operation mode, and determine whether the second determination condition T2≥Ts2 is true;

[0052] If T2≥Ts2 is true, control the second driving mechanism 400 to drive the baffle 300 and the volute 220 to rotate together to the second stop position, and then control the second driving mechanism 400 to drive the baffle 300 and the volute 220 to rotate together to the first stop position after a set time (e.g., 1 min, 3 min, 5 min, etc.), and make T2=0;

[0053] If T2≥Ts2 is false, execute the step of accumulating the running time T2 of the cooling operation mode, and determining whether the second determination condition T2≥Ts2 is true. In the air conditioner, the filter screen is arranged at the second air outlet 112, and the heat exchanger 600 is an evaporator.

[0054] As shown in FIG. 1, the method for executing the heat exchanger cleaning mode comprises the following steps: Figure 7

[0055] Controlling the four-way valve to be in the first conduction state for the cooling operation, controlling the compressor to operate at a first frequency f1 (f1 is the target frequency of the compressor in the cooling stage), controlling the first driving mechanism 230 to operate at a first rotating speed n1, recording the running time t1, and obtaining the condenser temperature Tw1;

[0056] If Tw1≥Tws1 is true, make t1=0, and exit the heat exchanger cleaning mode;

[0057] If t1≥ts1 and Tw1

[0058] If Tw2≥Tws2 is true, make t2=0, and exit the heat exchanger cleaning mode;

[0059] ​based on t2 >= second time threshold ts2 and Tw2 < second temperature threshold Tws2, t2 = 0 is made, the four-way valve is controlled to be in the second conducting state for the heating operation, the compressor is controlled to operate at the third frequency f3 (f3 is the defrosting stage compressor target frequency), the operation time t3 is recorded, and the condenser temperature Tw3 is acquired;

[0060] based on t3 >= third time threshold ts3 and / or Tw3 >= second temperature threshold Tws3, t3 = 0 is made, the compressor is controlled to stop, the first driving mechanism 230 is controlled to operate at the second rotating speed n2, and the operation time t4 is recorded;

[0061] based on t4 >= fourth time threshold ts4, t4 = 0 is made, and the heat exchanger cleaning mode is exited.

[0062] Wherein, Tws1, Tws2 and Tws3 are the condenser target protection temperatures. The four-way valve, the condenser and the compressor are located in the outdoor unit of the air conditioner.

[0063] In summary, the air conditioner indoor unit provided in the embodiment of the utility model, when the baffle and the volute are located at the first stop position, the volute is located at the side of the baffle which is away from the first air inlet, the third air inlet is communicated with the first air inlet, the inlet of the volute is communicated with the second air inlet, and the first driving mechanism is operated, so that the wind beam flowing from the second air inlet to the first air inlet through the volute is formed in the first mounting cavity; when the baffle and the volute are located at the second stop position, the volute is located at the side of the baffle which is away from the second air inlet, the third air inlet is communicated with the second air inlet, the inlet of the volute is communicated with the first air inlet, and the first driving mechanism is operated, so that the wind beam flowing from the first air inlet to the second air inlet through the volute is formed in the first mounting cavity; the air outlet from one of the first air inlet and the second air inlet of the air conditioner indoor unit is arranged to blow forward, and the other is arranged to blow downward, and by reasonably selecting the stop position of the combined structure of the baffle and the volute, the air conditioner indoor unit can realize forward air outlet during refrigeration and downward air outlet during heating, so that the refrigeration effect and the heating effect of the air conditioner indoor unit are both good.

[0064] In the description in the utility model, it needs to be explained that the terms "upper", "lower", "one side", "another side", "one end", "another end", "edge", "opposite", "four corners", "periphery", "mouth" structure" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting the utility model.

[0065] In the description of the embodiments of the utility model, unless another definite provision and limitation, the term "connect", "directly connect", "indirectly connect", "fixedly connect", "install", "assemble" should do broad sense understanding, for example, can be fixedly connected, also can be detachable connection, or integrally connect, the term "install", "connect", "fixedly connect" can be directly connected, also can indirectly connect through intermediate medium, can be two elements inside the intercommunication. For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0066] Although the embodiments disclosed by the utility model are as above, the content described is only the embodiment adopted for facilitating the understanding of the utility model, and is not used to limit the utility model. Any person skilled in the art of the utility model can make any modification and change in the implementation form and details without departing from the spirit and scope of the utility model disclosed, but the patent protection scope of the utility model still needs to be defined by the appended claims.

Claims

1. An indoor unit of an air conditioner, characterized by comprising: The shell has a first installation cavity, a cavity wall of the first installation cavity has a first air port and a second air port; The fan assembly is arranged in the first installation cavity and includes a fan wheel, a volute and a first driving mechanism, the fan wheel is arranged in the volute and is in transmission connection with the first driving mechanism, and the first driving mechanism is arranged to drive the fan wheel to rotate; The baffle plate is provided with a third air port, the baffle plate is connected with the volute, one side of the baffle plate facing the volute is a recessed side, an outlet of the volute is located in the recessed side and is in communication with the third air port; The second driving mechanism is arranged to drive the baffle plate and the volute to rotate together, and the baffle plate and the volute have a first stop position and a second stop position; Based on the baffle plate and the volute being located at the first stop position, the volute is located at a side of the baffle plate away from the first air port, the third air port is in communication with the first air port, and an inlet of the volute is in communication with the second air port; Based on the baffle plate and the volute being located at the second stop position, the volute is located at a side of the baffle plate away from the second air port, the third air port is in communication with the second air port, and the inlet of the volute is in communication with the first air port. Based on the baffle plate and the volute being located at the first stop position, the baffle plate divides the inside of the first installation cavity into a first sub-cavity and a second sub-cavity, the first sub-cavity is located between the third air port and the first air port and is in communication with the third air port and the first air port, and the second sub-cavity is located between the inlet of the volute and the second air port and is in communication with the inlet of the volute and the second air port. One side of the baffle plate away from the volute is provided with a first abutting portion and a second abutting portion, and a cavity wall of the first installation cavity is provided with a first abutting matching portion and a second abutting matching portion; 2. The air conditioner indoor unit according to claim 1, characterized by, In the circumferential direction of the volute, the first abutting portion and the second abutting portion are located on both sides of the third air port, the first abutting matching portion and the second abutting matching portion are located on both sides of the first air port and are in one-to-one sealing cooperation with the first abutting portion and the second abutting portion, the first abutting portion, the second abutting portion, the first abutting matching portion, the second abutting matching portion, the baffle plate and the first air port form the first sub-cavity, and the first abutting portion, the second abutting portion, the first abutting matching portion, the second abutting matching portion, the baffle plate and the second air port form the second sub-cavity. 3.The indoor unit of claim 2, wherein, One of the first abutting portion and the second abutting portion is an abutting plate, one of the first abutting matching portion and the second abutting matching portion is the cavity wall of the first installation cavity, and the other is an abutting plate, and each abutting plate extends in the axial direction of the volute; In the axial direction of the volute, both ends of the baffle plate are in one-to-one sealing cooperation with the opposite side walls of the first installation cavity. 4.The indoor unit of claim 3, wherein, ​ ​ 5.The indoor unit of the air conditioner according to claim 1, characterized by, Based on the baffle and the volute being located at the second stop position, the baffle separates the interior of the first mounting cavity into a third sub-cavity and a fourth sub-cavity, the third sub-cavity is located between and communicates the third air port and the second air port, and the fourth sub-cavity is located between and communicates the inlet of the volute and the first air port. 6.The air conditioner indoor unit according to claim 5, characterized by, The side of the baffle facing away from the volute is provided with a third abutting portion and a fourth abutting portion, and the cavity wall of the first mounting cavity is provided with a third abutting matching portion and a fourth abutting matching portion; In the circumferential direction of the volute, the third abutting portion and the fourth abutting portion are located on both sides of the third air port, the third abutting matching portion and the fourth abutting matching portion are located on both sides of the second air port and sealingly correspond to the third abutting portion and the fourth abutting portion, the third abutting portion, the fourth abutting portion, the third abutting matching portion, the fourth abutting matching portion, the baffle and the third air port form the third sub-cavity, and the third abutting portion, the fourth abutting portion, the third abutting matching portion, the fourth abutting matching portion, the baffle and the first air port form the fourth sub-cavity. 7.The air conditioner indoor unit according to claim 6, characterized by, The third abutting portion and the fourth abutting portion are abutting plates, and the third abutting matching portion and the fourth abutting matching portion are the cavity wall of the first mounting cavity, and each of the abutting plates extends in the axial direction of the volute; In the axial direction of the volute, the two ends of the baffle sealingly correspond to the opposite side walls of the first mounting cavity.

8. The air conditioner indoor unit according to any one of claims 1 to 7, characterized in that: In the axial direction of the volute, one end of the baffle is connected with a driven wheel through a plurality of rib plates, and the other end is connected with a mounting disc through a plurality of rib plates, the driven wheel and the mounting disc are rotatably connected with the opposite side walls of the first mounting cavity one by one, and the volute is located between the driven wheel and the mounting disc; The second driving mechanism includes a second driving motor and a driving wheel, and the driving wheel is arranged on the rotating shaft of the second driving motor and in transmission cooperation with the driven wheel.

9. The air conditioner indoor unit according to any one of claims 1 to 7, characterized in that: The volute and the impeller include a plurality of groups, the first driving mechanism includes one or more first driving motors, each of the first driving motors is located between two adjacent volutes, and a plurality of impellers are arranged on the rotating shaft of the first driving motor; The interior of the shell is vertically provided with a partition plate, the partition plate separates the interior of the shell into a second mounting cavity and the first mounting cavity, the first air port is located on the partition plate, the second air port is located on the bottom wall of the first mounting cavity, and the side wall of the second mounting cavity opposite to the partition plate is provided with a fourth air port.

10. An air conditioner characterized by comprising: The air conditioner indoor unit according to any one of claims 1 to 9.

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