Floor-standing air conditioner indoor unit and air conditioner

Abstract

The present invention provides a floor-standing air conditioner indoor unit, which includes an air duct housing, a wind guide cylinder, a first fan, and a second fan. The air duct housing includes a front shell plate and a rear shell plate. The rear shell plate is successively provided with a first air inlet and a second air inlet from top to bottom, and the front shell plate is provided with an air duct air outlet corresponding to the first air inlet; the wind guide cylinder is located between the first air inlet and the air duct air outlet, and the area of the air outlet end of the wind guide cylinder is smaller than the area of the air duct air outlet, and / or, the air outlet end of the wind guide cylinder is spaced from the air duct air outlet; the front shell plate includes a first inclined portion, the first inclined portion is located between the first fan and the second fan, and the first inclined portion inclines upward from bottom to top towards the rear shell plate. The present invention also provides an air conditioner including the air conditioner indoor unit and an air conditioner outdoor unit. The technical solution of the present invention can significantly increase the air volume of the air duct air outlet and reduce the noise generated by the air flow directly impacting the wind guide cylinder vertically upward.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to a floor-standing air conditioner indoor unit and an air conditioner. Background Art

[0002] A floor-standing air conditioner, also known as a cabinet air conditioner, is a type of split air conditioner, which has advantages such as high power and strong wind force, and is commonly used in families, restaurants, and offices. With the improvement of people's living standards, people have higher and higher requirements for air conditioners. In an exemplary embodiment, a front air outlet is provided at the front of the floor-standing air conditioner indoor unit, and a first fan and a second fan are arranged inside it from top to bottom. The first fan drives the air flow to move from back to front and blow out from the front air outlet, and the second fan drives the air flow to move from bottom to top. However, the air flow moving from bottom to top will directly blow to the air outlet, affecting the air output of the first fan, resulting in an unsatisfactory air volume at the front air outlet; in addition, the air flow blown out by the second fan will all directly impact the air guide cylinder corresponding to the first fan upward, thus generating relatively large noise. Summary of the Invention

[0003] The main object of the present invention is to provide a floor-standing air conditioner indoor unit and an air conditioner, aiming to solve at least one of the above technical problems.

[0004] To achieve the above object, the present invention provides a floor-standing air conditioner indoor unit, including:

[0005] A housing, including an air duct housing, the air duct housing includes a front shell plate and a rear shell plate, and two side plates extending in the up and down direction connecting the front shell plate and the rear shell plate. The rear shell plate is successively provided with a first air inlet and a second air inlet from top to bottom, and the front shell plate is provided with an air duct air outlet corresponding to the first air inlet;

[0006] An air guide cylinder, located between the first air inlet and the air duct air outlet, and the area of the air outlet end of the air guide cylinder is smaller than the area of the air duct air outlet, and / or, the air outlet end of the air guide cylinder is spaced from the air duct air outlet;

[0007] A first fan, installed in the air guide cylinder, and the first fan is used to drive the air flow to blow from the first air inlet to the air duct air outlet; and,

[0008] A second fan, installed in the air duct housing and located below the first fan, and the first fan drives the air flow to blow from the second air inlet to the air duct air outlet; wherein,

[0009] The front shell plate includes a first inclined portion, the first inclined portion is located between the first fan and the second fan, and the first inclined portion inclines upward towards the rear shell plate.

[0010] In one embodiment, the front shell plate further includes a second inclined portion located between the first inclined portion and the air duct air outlet, and a bent portion connecting the first inclined portion and the second inclined portion. The second inclined portion inclines towards the rear shell plate from the connection with the bent portion, and the distance between the second inclined portion and the rear shell plate is greater than the distance between the first inclined portion and the rear shell plate.

[0011] In one embodiment, the included angle between the first inclined portion and the horizontal plane is less than or equal to the included angle between the second inclined portion and the horizontal plane.

[0012] In one embodiment, the included angle between the first inclined portion and the horizontal plane is greater than 30° and less than 90°; the included angle between the second inclined portion and the horizontal plane is greater than 45° and less than 90°.

[0013] In one embodiment, the bottom wall of the air duct air outlet extends forward in the horizontal direction from the connection with the second inclined portion.

[0014] In one embodiment, horizontal louvers are provided on the air duct air outlet.

[0015] In one embodiment, the front side of the first inclined portion is connected to the front side of the second inclined portion by a first reinforcing rib, and the front side of the second inclined portion is connected to the bottom wall of the air duct air outlet by a second reinforcing rib.

[0016] In one embodiment, the first blower is an axial flow blower for driving air flow to move from the rear to the front; the second blower is a centrifugal blower for driving air flow to move from the bottom to the top.

[0017] In one embodiment, the air duct housing includes a volute and a volute tongue. The volute and the volute tongue cooperate to form a centrifugal air duct. The centrifugal blower is disposed in the centrifugal air duct, and the first inclined portion inclines towards the rear shell plate from the connection with the volute tongue.

[0018] In one embodiment, the floor-standing air conditioner indoor unit further includes a top air outlet frame. An installation opening is formed on the top surface of the air duct housing. The top air outlet frame is movably mounted up and down at the installation opening, and the lower end and the front end of the top air outlet frame are open.

[0019] In one embodiment, the housing includes an outer shell and the air duct housing installed in the outer shell. The outer shell includes a front outer shell and a rear outer shell connected to each other. The front outer shell is provided with outer air inlets corresponding to the first air inlet and the second air inlet, and the rear outer shell is provided with an outer air outlet corresponding to the air duct air outlet.

[0020] The present invention also provides an air conditioner, including:

[0021] Outdoor unit of air conditioner; and,

[0022] The floor-standing indoor unit of air conditioner, which is connected to the outdoor unit of air conditioner through a refrigerant pipe.

[0023] The present invention provides a floor-standing indoor unit of air conditioner, which includes an air duct housing, a wind guide cylinder, a first fan and a second fan. Among them, the air duct housing includes a front shell plate and a rear shell plate. The rear shell plate is successively provided with a first air inlet and a second air inlet from top to bottom, and the front shell plate is provided with an air duct air outlet corresponding to the first air inlet; the wind guide cylinder is located between the first air inlet and the air duct air outlet, and the area of the air outlet end of the wind guide cylinder is smaller than the area of the air duct air outlet, and / or, the air outlet end of the wind guide cylinder is spaced from the air duct air outlet; the front shell plate includes a first inclined portion, the first inclined portion is located between the first fan and the second fan, and the first inclined portion inclines upward from bottom to top towards the rear shell plate. The technical solution of the present invention inclines the first inclined portion upward from bottom to top towards the rear shell plate, so as to suppress the air flow blown out by the second fan towards the rear shell plate, and after being rebounded by the rear shell plate, it is blown out from the air duct air outlet, thereby significantly improving the air volume of the air duct air outlet; it can also avoid the situation that the air flow directly blows upward from bottom to top at the air duct air outlet and partially conflicts and cancels with the air flow blown out from the wind guide cylinder, and reduce the noise generated by the air flow vertically impacting the wind guide cylinder directly upward. Description of the drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0025] Figure 1 It is a schematic structural diagram of an embodiment of the floor-standing indoor unit of air conditioner of the present invention;

[0026] Figure 2 It is Figure 1 a schematic structural diagram of an embodiment of the air duct housing and the fan in

[0027] Figure 3 It is Figure 2 an exploded view of the air duct housing and the fan shown;

[0028] Figure 4 It is Figure 2 a schematic cross-sectional structural diagram of the air duct housing and the fan shown along the A-A section line;

[0029] Figure 5 It is Figure 2 a schematic structural diagram of the front shell plate in the air duct housing shown;

[0030] Figure 6 is Figure 2 Another structural schematic diagram of the front shell plate in the air duct shell shown

[0031] Explanation of the reference numerals in the attached drawings:

[0032] Label Name Label Name 11 Front housing 111 Outlet air vent 12 Rear housing 121 Inlet air vent 20 Air duct housing 201 Installation opening 21 Front shell plate 211 Air duct outlet 2111 Horizontal louvers 2112 Bottom wall 212 First inclined part 213 Second inclined part 214 Bending part 215 Reinforcing rib 22 Rear shell plate 221 First inlet air vent 222 Second inlet air vent 23 Side plate 24 Volute 25 Volute tongue 30 Air guide cylinder 50 First fan 60 Second fan 70 Top air outlet frame

[0033] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings Specific embodiments

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention

[0035] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly

[0036] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention

[0037] An embodiment of the present invention provides a floor-standing air conditioner indoor unit. The following will be combined with Figures 1 to 6 Specifically describe the floor-standing air conditioner indoor unit of the embodiment of the present invention

[0038] In an embodiment of the present invention, the floor-standing air conditioner indoor unit includes:

[0039] A housing, including an air duct housing 20, the air duct housing 20 including a front shell plate 21 and a rear shell plate 22, and two side plates 23 extending in the up and down direction connecting the front shell plate 21 and the rear shell plate 22, the rear shell plate 22 being successively provided with a first air inlet 221 and a second air inlet 222 from top to bottom, and the front shell plate 21 being provided with an air duct outlet 211 corresponding to the first air inlet 221;

[0040] An air guide cylinder 30, located between the first air inlet 221 and the air duct outlet 211, and the area of the air outlet port of the air guide cylinder 30 being smaller than the area of the air duct outlet 211, and / or, the air outlet port of the air guide cylinder 30 being spaced from the air duct outlet 211;

[0041] A first fan 50, installed inside the air guide cylinder 30, the first fan 50 being used to drive air flow to blow from the first air inlet 221 to the air duct outlet 211; and,

[0042] A second fan 60, installed inside the air duct housing 20 and located below the first fan 50, the first fan 50 driving air flow to blow from the second air inlet 222 to the air duct outlet 211; wherein,

[0043] The front shell plate 21 includes a first inclined portion 212, the first inclined portion 212 being located between the first fan 50 and the second fan 60, and the first inclined portion 212 being inclined upwardly towards the rear shell plate 22.

[0044] Specifically, as Figure 1As shown, the housing further includes an outer casing. The air duct housing 20 is installed inside the outer casing. The outer casing includes a front outer casing 11 and a rear outer casing 12 that are connected to each other. The front outer casing 11 is provided with an outer air inlet 121 corresponding to the first air inlet 221 and the second air inlet 222. The rear outer casing 12 is provided with an outer air outlet 111 corresponding to the air duct air outlet 211. An evaporator is further provided inside the housing, and the evaporator is located between the rear outer casing 12 and the rear shell plate 22. It can be understood that the first fan 50 and the second fan 60 jointly drive the air flow to enter the outer casing from the outer air inlet 121. After flowing through the evaporator for cooling (heating in the heating mode), part of the air flow is driven by the first fan 50 to enter the air guide cylinder 30 from the first air inlet 221 and then blows towards the air duct air outlet 211. Another part of the air flow is driven by the second fan 60 to enter the air duct housing 20 through the second air inlet 222. During the upward movement, under the suppression of the first inclined portion 212, the air flow moves towards the rear shell plate 22 and is rebounded, and then also blows towards the air duct air outlet 211. Finally, the air flows entering the air duct housing 20 from different air inlets all blow into the room through the air duct air outlet 211 and the outer air outlet 111 in sequence to cool or heat the indoor environment. Among them, it should be noted that the area of the air outlet port of the air guide cylinder 30 is smaller than the area of the air duct air outlet 211, and / or, the air outlet port of the air guide cylinder 30 is spaced from the air duct air outlet 211. The purpose of such a setting is to form an air outlet channel between the air guide cylinder 30 and the air duct air outlet 211 for the air flow blown out by the second fan 60 to pass through and blow out from the air duct air outlet 211.

[0045] It can be understood that in the technical solution of the present invention, by arranging the first inclined portion 212 to incline upward towards the rear shell plate 22, the air flow blown out by the second fan 60 is suppressed towards the rear shell plate 22 and is rebounded by the rear shell plate 22 and then blown out from the air duct air outlet 211, thereby significantly increasing the air volume of the air duct air outlet 211; it can also avoid the situation where the air flow directly blows upward towards the air duct air outlet 211 and partially conflicts and cancels with the air flow blown out from the air guide cylinder 30, and reduce the noise generated by the air flow directly impacting the air guide cylinder 30 vertically upward.

[0046] In one embodiment, as Figures 4 to 6As shown, the front shell plate 21 further includes a second inclined portion 213 located between the first inclined portion 212 and the air duct air outlet 211, and a bending portion 214 connecting the first inclined portion 212 and the second inclined portion 213. The second inclined portion 213 inclines toward the rear shell plate 22 from the connection with the bending portion 214, and the distance between the second inclined portion 213 and the rear shell plate 22 is greater than the distance between the first inclined portion 212 and the rear shell plate 22. It can be understood that by inclining the first inclined portion 212 toward the rear shell plate 22, the airflow from bottom to top can be pressed against the rear shell plate 22, and then blown toward the air duct air outlet 211 after rebounding from the rear shell plate 22, which can significantly increase the air volume at the air duct air outlet 211 and avoid directly blowing on the air duct air outlet 211 and reducing the air volume moving from front to back. However, if the entire front side wall between the first fan 50 and the second fan 60 in the front shell plate 21 is inclined toward the rear shell plate 22, the air passage between this front side wall and the rear shell plate 22 will be too narrow, and correspondingly, the air volume passing through this air passage will also decrease. Therefore, in this embodiment, a second inclined portion 213 is further provided above the first inclined portion 212, and the distance between the second inclined portion 213 and the rear shell plate 22 is greater than the distance between the first inclined portion 212 and the rear shell plate 22, so as to increase the size of this air passage and further increase the air volume at the air duct air outlet 211; at the same time, since both the first inclined portion 212 and the second inclined portion 213 incline toward the rear shell plate 22, the airflow passing through this air passage will still be guided to the rear shell plate 22 and finally blown toward the air duct air outlet 211.

[0047] Further, the angle between the first inclined portion 212 and the horizontal plane is less than or equal to the angle between the second inclined portion 213 and the horizontal plane, that is, the inclination degree of the first inclined portion 212 is greater than or equal to the inclination degree of the second inclined portion 213. It can be understood that when the airflow just blows out from the second fan 60, the wind pressure is relatively large. If the airflow is not pressed against the rear shell plate 22 in time, the airflow will directly blow upward. After being suppressed by the first inclined portion 212, the airflow blowing directly from bottom to top has been greatly reduced. Therefore, the inclination degree of the second inclined portion 213 can be less than that of the first inclined portion 212 to expand the air passage area of the air passage. That is to say, the main function of the first inclined portion 212 is to press the wind pressure of the air passage against the rear shell plate 22, while the second inclined portion 213 is used to expand the air volume of the air passage.

[0048] Further, the angle between the first inclined portion 212 and the horizontal plane is greater than 30° and less than 90°; the angle between the second inclined portion 213 and the horizontal plane is greater than 45° and less than 90°. It can be understood that the first inclined portion 212 and the second inclined portion 213 must be inclined relative to the vertical direction, but cannot be overly inclined to avoid making the air passage too narrow.

[0049] In one embodiment, as Figure 6As shown, the bottom wall 2112 of the air duct outlet 211 extends forward in the horizontal direction from the connection with the second inclined portion 213. In this way, the air duct outlet 211 protrudes outward relative to the front side wall of the front housing plate 21, so as to direct the air flow in the air duct housing 20 forward of the air conditioner indoor unit.

[0050] Furthermore, as Figure 2 shown, horizontal louvers 2111 are provided on the air duct outlet 211. Specifically, the horizontal louvers 2111 can swing up and down to change the air supply direction and increase the air supply range. When the air conditioner indoor unit is in the heating mode, the horizontal louvers 2111 can be adjusted to be inclined downward, and through the air pressing effect of the horizontal louvers 2111, the hot air flow can be directed to the ground, so that the user can receive the warm air as soon as possible.

[0051] Furthermore, as Figure 5 shown, the front side of the first inclined portion 212 is connected to the front side of the second inclined portion 213 through a first reinforcing rib 215, and the front side of the second inclined portion 213 is connected to the bottom wall 2112 of the air duct outlet 211 through a second reinforcing rib 215. By providing the first reinforcing rib 215, the connection strength between the first inclined portion 212 and the second inclined portion 213 can be enhanced, and the overall strength of the front side wall of the front housing plate 21 can be improved; and since the bottom wall 2112 of the air duct outlet 211 extends forward, by providing the second reinforcing rib 215, it can play a role in supporting the bottom wall 2112 of the air duct outlet 211 and enhancing its strength.

[0052] In this embodiment, as Figure 2 shown, the first fan 50 is an axial flow fan, and the axial flow fan is used to drive the air flow to move from the rear to the front; the second fan 60 is a centrifugal fan, and the centrifugal fan is used to drive the air flow to move from the bottom to the top. It can be understood that the axial flow fan has an axial air outlet, with the advantages of large air volume and concentrated air outlet. The centrifugal fan can change the air flow direction, suck the fluid axially and then use the centrifugal force to throw the fluid out in the circumferential direction, with the advantage of large air pressure. Compared with the case where only an axial flow fan is provided for the corresponding air duct outlet 211, setting a centrifugal fan below the axial flow fan can further increase the air volume of the air duct outlet 211.

[0053] Furthermore, as Figure 6As shown, the air duct housing 20 includes a volute 24 and a volute tongue 25. The volute 24 and the volute tongue 25 cooperate to form a centrifugal air duct, and the centrifugal fan is disposed in the centrifugal air duct. The first inclined portion 212 inclines toward the rear shell plate 22 starting from the connection with the volute tongue 25. It can be understood that the air pressure at the volute tongue 25 of the centrifugal air duct is relatively high. If the air flow is not timely pressed toward the rear shell plate 22, the air flow will blow straight upward. Therefore, the first inclined portion 212 is connected to the volute tongue 25 and is inclined toward the rear shell plate 22 starting from the volute tongue 25.

[0054] In one embodiment, as Figure 1 shown, the floor-standing air conditioner indoor unit further includes an ejection air frame 70. An installation opening 201 is formed in the top surface of the air duct housing 20. The ejection air frame 70 is movably installed up and down at the installation opening 201, and the lower end and the front end of the ejection air frame 70 are open. It can be understood that when the ejection air function of the air conditioner indoor unit is turned on, the ejection air frame 70 rises and extends out of the housing. A part of the air flow blown by the second fan 60 will pass through the installation opening 201 and the lower port of the ejection air frame 70, and then be blown out from the front port of the ejection air frame 70, improving the air outlet height of the air conditioner indoor unit, and further accelerating the overall cooling or heating effect of the room. When the ejection air function of the air conditioner indoor unit is turned off, the ejection air frame 70 descends and is hidden in the housing. In this way, the air flow blown by the second fan 60 no longer blows out from the top of the air duct housing 20, but is all blown toward the air duct air outlet 211. At this time, if the front side wall of the air duct housing 20 is not inclined, the air flow in the air passage will directly blow toward the air duct air outlet 211, and will partially conflict and cancel with the air flow blown out from the air guide cylinder 30, not only not increasing the air volume, but also reducing the air volume. Therefore, by providing the first inclined portion 212, the air flow can be pressed toward the rear shell plate 22, and after being rebounded by the rear shell plate 22, it is blown out from the air duct air outlet 211, thereby significantly improving the air volume of the air duct air outlet 211.

[0055] An embodiment of the present invention further provides an air conditioner, which includes an air conditioner outdoor unit and a floor-standing air conditioner indoor unit connected by a refrigerant pipe. The specific structure of the floor-standing air conditioner indoor unit refers to the above embodiment. Since this air conditioner adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0056] An embodiment of the present invention further provides an air conditioner, which includes an air conditioner outdoor unit and a floor-standing air conditioner indoor unit connected by a refrigerant pipe. The specific structure of the floor-standing air conditioner indoor unit refers to the above embodiment. Since this air conditioner adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0057] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A floor-mounted air conditioner indoor unit, characterized in that, it includes: A housing, including an air duct housing, the air duct housing includes a front housing plate and a rear housing plate, and two side plates extending in the up and down direction connecting the front housing plate and the rear housing plate. The rear housing plate is successively provided with a first air inlet and a second air inlet from top to bottom, and the front housing plate is provided with an air duct air outlet corresponding to the first air inlet; A wind guide cylinder, located between the first air inlet and the air duct air outlet, and the area of the air outlet end of the wind guide cylinder is smaller than the area of the air duct air outlet, and / or, the air outlet end of the wind guide cylinder is spaced from the air duct air outlet; A first fan, installed in the wind guide cylinder, the first fan is used to drive the air flow to blow from the first air inlet to the air duct air outlet; and, A second fan, installed in the air duct housing and located below the first fan, the first fan drives the air flow to blow from the second air inlet to the air duct air outlet; wherein, The front housing plate includes a first inclined portion, the first inclined portion is located between the first fan and the second fan, and the first inclined portion inclines upward from bottom to top towards the rear housing plate; The front housing plate further includes a second inclined portion located between the first inclined portion and the air duct air outlet, and a bent portion connecting the first inclined portion and the second inclined portion. The second inclined portion inclines from the connection with the bent portion towards the rear housing plate, and the distance between the second inclined portion and the rear housing plate is greater than the distance between the first inclined portion and the rear housing plate; Horizontal louvers are provided on the air duct air outlet; The front side of the first inclined portion is connected to the front side of the second inclined portion by a first reinforcing rib, and the front side of the second inclined portion is connected to the bottom wall of the air duct air outlet by a second reinforcing rib.

2. The floor-mounted air conditioner indoor unit according to claim 1, characterized in that, The included angle between the first inclined portion and the horizontal plane is less than or equal to the included angle between the second inclined portion and the horizontal plane.

3. The floor-mounted air conditioner indoor unit according to claim 2, characterized in that, The included angle between the first inclined portion and the horizontal plane is greater than 30° and less than 90°; the included angle between the second inclined portion and the horizontal plane is greater than 45° and less than 90°.

4. The floor-mounted air conditioner indoor unit according to claim 1, characterized in that, The bottom wall of the air duct air outlet extends forward in the horizontal direction from the connection with the second inclined portion.

5. The floor-mounted air conditioner indoor unit according to any one of claims 1 to 4, characterized in that, The first fan is an axial flow fan, and the axial flow fan is used to drive the air flow to move from back to front; the second fan is a centrifugal fan, and the centrifugal fan is used to drive the air flow to move from bottom to top.

6. The floor-mounted air conditioner indoor unit according to claim 5, characterized in that, The air duct housing includes a volute and a volute tongue, the volute and the volute tongue cooperate to form a centrifugal air duct, the centrifugal fan is arranged in the centrifugal air duct, and the first inclined portion inclines from the connection with the volute tongue towards the rear housing plate.

7. The floor-mounted air conditioner indoor unit according to claim 5, characterized in that, The floor-mounted air conditioner indoor unit further includes an upward air outlet frame. An installation opening is formed in the top surface of the air duct housing. The upward air outlet frame is movably installed up and down at the installation opening, and the lower end and the front end of the upward air outlet frame are open.

8. The floor-mounted air conditioner indoor unit according to claim 5, wherein, the housing includes an outer shell and the air duct housing installed inside the outer shell. The outer shell includes a front outer shell and a rear outer shell connected to each other. The front outer shell is provided with outer air inlets corresponding to the first air inlet and the second air inlet, and the rear outer shell is provided with an outer air outlet corresponding to the air duct air outlet.

9. An air conditioner, wherein, it includes: an air conditioner outdoor unit; and the floor-mounted air conditioner indoor unit according to any one of claims 1 to 8, and the floor-mounted air conditioner indoor unit is connected to the air conditioner outdoor unit through a refrigerant pipe.

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