Centrifugal fan volute, centrifugal fan and air conditioner

Abstract

The utility model provides a centrifugal fan volute, a centrifugal fan and an air conditioner, and belongs to the technical field of air conditioners. The centrifugal fan volute comprises a shell, an air door and a driving device. The air door is arranged on the shell, and the driving device is connected with the air door so as to drive the air door to be switched among a first position, a second position and a third position; according to the centrifugal fan volute, the driving device drives the air door to be switched among the first position, the second position and the third position; according to the centrifugal fan volute, only one air door is arranged on the shell, so that air exhausted by the wind wheel is only exhausted from the first air outlet duct, and the air exhausted by the wind wheel is simultaneously exhausted from the first air outlet duct and the second air outlet duct or the air exhausted by the wind wheel is only exhausted from the second air outlet duct. Compared with an existing double-air-outlet centrifugal fan needing to be provided with two air doors, the centrifugal fan volute has the advantages that the number of the air doors is reduced, and therefore the input cost of the air doors is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of air conditioners, and particularly relates to a centrifugal fan volute, a centrifugal fan, and an air conditioner. Background Art

[0002] An air conditioner includes an indoor unit and an outdoor unit. The indoor unit is placed indoors, and a centrifugal fan is provided inside the indoor unit. The air conditioner air is blown out from the air outlet of the air conditioner through the centrifugal fan.

[0003] In a cabinet-type air conditioner indoor unit, usually multiple air outlets are provided. For example, usually an upper air outlet and a lower air outlet are provided on the cabinet-type air conditioner indoor unit. In the prior art, in order to enable the air conditioner air to be blown out from the upper air outlet or the lower air outlet, usually a double-outlet centrifugal fan needs to be provided. The double-outlet centrifugal fan has two air ducts, and the two air ducts correspond to the upper air outlet and the lower air outlet respectively.

[0004] In the prior art double-outlet centrifugal fan, dampers are provided on both of the two air ducts of the double-outlet centrifugal fan. Two control devices are required to respectively control the opening and closing of the two dampers to change the direction of the air conditioner air blown out and prevent the air conditioner air from directly blowing on people.

[0005] Since dampers are provided on both of the two air ducts of the existing double-outlet centrifugal fan, and the two dampers need two control devices to control their opening and closing, the cost of the existing double-outlet centrifugal fan is relatively high. Utility Model Content

[0006] This application provides a centrifugal fan volute, a centrifugal fan, and an air conditioner to solve the technical problem that the existing double-outlet centrifugal fan needs to control two dampers, resulting in a relatively high cost.

[0007] To achieve the above object, the embodiments of this application provide the following technical solutions:

[0008] The first aspect of the embodiments of this application provides a centrifugal fan volute, including a housing, a damper, and a driving device;

[0009] An installation cavity, a first air outlet duct, and a second air outlet duct are provided inside the housing. The installation cavity is used for installing a wind wheel, and an air inlet for the wind wheel to enter is provided on the installation cavity. Both the first air outlet duct and the second air outlet duct are communicated with the installation cavity;

[0010] The damper is provided on the housing, and the driving device is connected to the damper to drive the damper to switch between a first position, a second position, and a third position;

[0011] When in the first position, the damper closes the second air outlet and opens the first air outlet, so that the wind exhausted by the wind wheel is discharged from the first air outlet; when in the second position, the damper opens the first air outlet and the second air outlet at the same time, so that the wind exhausted by the wind wheel is discharged from the first air outlet and the second air outlet at the same time; when in the third position, the damper closes the first air outlet and opens the second air outlet, so that the wind exhausted by the wind wheel is discharged from the second air outlet.

[0012] In the preferred technical solution of the centrifugal fan volute, the damper is arranged on the outer wall of the shell, and the shell is provided with a first damper inlet and a second damper inlet and an inlet, the first damper inlet and the inlet are connected to the first air outlet, and the second damper inlet and the inlet are connected to the second air outlet;

[0013] When in the first position, the driving device drives the damper to at least partially pass through the second damper inlet and outlet and enter into the second air outlet, so that the damper closes the second air outlet; when in the second position, the driving device drives the damper to be located outside the first air outlet and the second air outlet, so as to open the first air outlet and the second air outlet at the same time; when in the third position, the driving device drives the damper to at least partially pass through the first damper inlet and outlet and enter into the first air outlet, so that the damper closes the first air outlet.

[0014] In the preferred technical solution of the above-mentioned centrifugal fan volute, the driving device includes a first driving motor, a second driving motor, a first gear and a second gear, the damper is slidably connected to the shell on a side facing the shell, and a rack is provided on a side of the damper facing away from the shell, the first driving motor is provided on the shell, the first driving motor is connected to the rack through the first gear to drive the damper to pass into or out of the first damper inlet and outlet, and the second driving motor is connected to the rack through the second gear to drive the damper to pass into or out of the second damper inlet and outlet.

[0015] In the preferred technical solution of the above-mentioned centrifugal fan volute, a first air duct outlet is provided at one end of the first air outlet away from the installation cavity, a second air duct outlet is provided at one end of the second air outlet away from the installation cavity, and the diameter of the first air duct outlet is the same as the diameter of the second air duct outlet.

[0016] In the preferred technical solution of the above centrifugal fan volute, the first air outlet duct and the second air outlet duct are symmetrical about the center of the installation cavity.

[0017] In the preferred technical solution of the above-mentioned centrifugal fan volute, a sound insulation layer is provided on the side of the air damper facing the installation cavity.

[0018] In the preferred technical solution of the above-mentioned centrifugal fan volute, the housing includes a front plate, an upper side plate, a rear plate, and a lower side plate that are sequentially enclosed. The air inlet is provided on the front plate, and the air damper is provided on the upper side plate.

[0019] The second aspect of the embodiments of the present application provides a centrifugal fan, including a wind wheel, and further including the centrifugal fan volute according to any one of the above, and the wind wheel is arranged in the installation cavity of the centrifugal fan volute.

[0020] The third aspect of the embodiments of the present application provides an air conditioner, including an indoor unit of the air conditioner, and further including the above-mentioned centrifugal fan, and the centrifugal fan is arranged in the indoor unit of the air conditioner.

[0021] In the preferred technical solution of the above-mentioned air conditioner, a first air outlet and a second air outlet are provided on the indoor unit of the air conditioner. The first air outlet is provided above the second air outlet. The first air duct of the centrifugal fan volute is communicated with the first air outlet, and the second air duct of the centrifugal fan volute is communicated with the second air outlet.

[0022] A centrifugal fan volute, a centrifugal fan, and an air conditioner provided by the present application. The centrifugal fan volute includes a housing, an air damper, and a driving device. An installation cavity, a first air duct, and a second air duct are provided in the housing. The installation cavity is used for installing a wind wheel, and an air inlet for the wind wheel to enter the air is provided on the installation cavity. Both the first air duct and the second air duct are communicated with the installation cavity. The air damper is arranged on the housing, and the driving device is connected to the air damper to drive the air damper to switch between a first position, a second position, and a third position. The centrifugal fan volute proposed in the embodiments of the present application drives the air damper to switch between a first position, a second position, and a third position through the driving device, so that the air discharged by the wind wheel only discharges from the first air duct, the air discharged by the wind wheel simultaneously discharges from the first air duct and the second air duct, or the air discharged by the wind wheel only discharges from the second air duct. Since only one air damper is provided on the housing of the centrifugal fan volute provided by the present application, compared with the existing double-outlet centrifugal fan that needs to be provided with two air dampers, the centrifugal fan volute provided by the present application reduces the number of air dampers, thereby reducing the input cost of the air damper and solving the technical problem of high cost caused by the need to control two air dampers in the existing double-outlet centrifugal fan. Description of the Drawings

[0023] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with the present application, and are used together with the specification to explain the principles of the present application.

[0024] Figure 1Schematic structural diagram of the centrifugal fan provided by the embodiment of the present application;

[0025] Figure 2 For Figure 1 Schematic structural diagram after removing the rear plate;

[0026] Figure 3 Schematic structural diagram when the housing and the air damper are connected in the volute of the centrifugal fan provided by the embodiment of the present application;

[0027] Figure 4 Schematic structural diagram of the housing in the volute of the centrifugal fan provided by the embodiment of the present application;

[0028] Figure 5 For Figure 4 Partial structural diagram at position A;

[0029] Figure 6 For Figure 4 Partial structural diagram at position B;

[0030] Figure 7 Schematic structural diagram when the air damper is in the first position in the volute of the centrifugal fan provided by the embodiment of the present application;

[0031] Figure 8 Schematic structural diagram when the air damper is in the third position in the volute of the centrifugal fan provided by the embodiment of the present application.

[0032] Explanation of reference numerals:

[0033] 100 - housing; 101 - front plate; 102 - upper side plate; 103 - rear plate; 104 - lower side plate;

[0034] 110 - installation cavity; 111 - air inlet;

[0035] 120 - first air outlet duct; 121 - first air outlet of the air outlet duct;

[0036] 130 - second air outlet duct; 131 - second air outlet of the air outlet duct;

[0037] 140 - first air damper inlet and outlet;

[0038] 150 - second air damper inlet and outlet;

[0039] 200 - air damper; 210 - rack;

[0040] 300 - drive device; 310 - first drive motor; 320 - second drive motor; 330 - first gear; 340 - second gear;

[0041] 400 - impeller;

[0042] 500 - sound insulation layer.

[0043] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by reference to specific embodiments. Detailed Description of the Embodiments

[0044] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0045] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0046] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0047] The air conditioner includes an indoor unit and an outdoor unit. The indoor unit is placed indoors, and a centrifugal fan is provided inside the indoor unit. The air of the air conditioner is blown out from the air outlet of the air conditioner through the centrifugal fan.

[0048] In a cabinet-type air conditioner indoor unit, multiple air outlets are usually provided. For example, an upper air outlet and a lower air outlet are usually provided on the cabinet-type air conditioner indoor unit. In the prior art, in order to enable the air of the air conditioner to be blown out from the upper air outlet or the lower air outlet, a double-outlet centrifugal fan is usually required. The double-outlet centrifugal fan has two air ducts, and the two air ducts correspond to the upper air outlet and the lower air outlet respectively.

[0049] In the double-outlet centrifugal fan of the prior art, air dampers are provided on both of the two air ducts of the double-outlet centrifugal fan, and two control devices are required to respectively control the opening and closing of the two air dampers to change the direction of the air blown out by the air conditioner and avoid the air of the air conditioner blowing directly on the human body.

[0050] Since air dampers are provided on both air ducts of the existing double-outlet centrifugal fan, and two control devices are required to control the opening and closing of the two air dampers, the cost of the existing double-outlet centrifugal fan is relatively high.

[0051] To solve the technical problem that the existing double-outlet centrifugal fan needs to control two air dampers, resulting in a relatively high cost, an embodiment of the present application provides a centrifugal fan volute, a centrifugal fan, and an air conditioner. The centrifugal fan volute includes a housing, an air damper, and a driving device; an installation cavity, a first air duct, and a second air duct are provided inside the housing. The installation cavity is used for installing a wind wheel, and an air inlet for the wind wheel to intake air is provided on the installation cavity. Both the first air duct and the second air duct communicate with the installation cavity; the air damper is provided on the housing, and the driving device is connected to the air damper to drive the air damper to switch between a first position, a second position, and a third position; in the first position, the air damper closes the second air duct and opens the first air duct, so that the air discharged by the wind wheel is discharged from the first air duct; in the second position, the air damper opens both the first air duct and the second air duct simultaneously, so that the air discharged by the wind wheel is discharged from the first air duct and the second air duct simultaneously; in the third position, the air damper closes the first air duct and opens the second air duct, so that the air discharged by the wind wheel is discharged from the second air duct.

[0052] The centrifugal fan volute provided by the embodiment of the present application drives the air damper to switch between the first position, the second position, and the third position through the driving device, so that the air discharged by the wind wheel is only discharged from the first air duct, the air discharged by the wind wheel is discharged from the first air duct and the second air duct simultaneously, or the air discharged by the wind wheel is only discharged from the second air duct. Since only one air damper is provided on the housing of the centrifugal fan volute provided by the present application, compared with the existing double-outlet centrifugal fan that needs to be provided with two air dampers, the centrifugal fan volute provided by the present application reduces the number of air dampers, thereby reducing the input cost of the air damper and solving the technical problem that the existing double-outlet centrifugal fan needs to control two air dampers, resulting in a relatively high cost.

[0053] The technical solution of the application will be described in detail below with specific embodiments in conjunction with the accompanying drawings. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0054] Refer to Figures 1 to 8 as shown in Figure 1 which is a schematic structural diagram of the centrifugal fan provided by the embodiment of the present application; Figure 2 is Figure 1 a schematic structural diagram after removing the rear plate; Figure 3 which is a schematic structural diagram of the connection between the housing and the air damper in the centrifugal fan volute provided by the embodiment of the present application; Figure 4 which is a schematic structural diagram of the housing in the centrifugal fan volute provided by the embodiment of the present application; Figure 5 is Figure 4Schematic diagram of the partial structure at position A; Figure 6 is Figure 4 Schematic diagram of the partial structure at position B;

[0055] Figure 7 Schematic diagram of the structure of the centrifugal fan volute provided by the embodiment of the present application when the air damper is in the first position; Figure 8 Schematic diagram of the structure of the centrifugal fan volute provided by the embodiment of the present application when the air damper is in the third position.

[0056] Referring to Figures 1 to 2 As shown, the embodiment of the present application provides a centrifugal fan volute, including a housing 100, an air damper 200, and a driving device 300.

[0057] An installation cavity 110, a first air outlet duct 120, and a second air outlet duct 130 are provided inside the housing 100. The installation cavity 110 is used for installing the impeller 400. An air inlet 111 for the impeller 400 to intake air is provided on the installation cavity 110. Both the first air outlet duct 120 and the second air outlet duct 130 are communicated with the installation cavity 110.

[0058] The air damper 200 is provided on the housing 100, and the driving device 300 is connected to the air damper 200 to drive the air damper 200 to switch between a first position, a second position, and a third position.

[0059] When in the first position, the air damper 200 closes the second air outlet duct 130 and opens the first air outlet duct 120, so that the air discharged by the impeller 400 is discharged from the first air outlet duct 120; when in the second position, the air damper 200 opens both the first air outlet duct 120 and the second air outlet duct 130, so that the air discharged by the impeller 400 is discharged from both the first air outlet duct 120 and the second air outlet duct 130 at the same time; when in the third position, the air damper 200 closes the first air outlet duct 120 and opens the second air outlet duct 130, so that the air discharged by the impeller 400 is discharged from the second air outlet duct 130.

[0060] The driving device 300 of the centrifugal fan volute of the present application is connected to the air damper 200, and the driving device 300 can drive the air damper 200 to switch between a first position, a second position, and a third position.

[0061] When the driving device 300 drives the air damper 200 to be in the first position, the air damper 200 closes the second air outlet duct 130, that is, the air damper 200 blocks the second air outlet duct 130, so that the second air outlet duct 130 is not communicated with the installation cavity 110, and at this time the air damper 200 does not block the first air outlet duct 120, so that the first air outlet duct 120 is communicated with the installation cavity 110, so that the air in the installation cavity 110 can only be discharged from the first air outlet duct 120.

[0062] When the driving device 300 drives the air door 200 to the second position, the air door 200 does not block the first air outlet duct 120 and the second air outlet duct 130, so that both the first air outlet duct 120 and the second air outlet duct 130 are communicated with the installation cavity 110, and thus the air in the installation cavity 110 can be discharged from both the first air outlet duct 120 and the second air outlet duct 130 simultaneously.

[0063] When the driving device 300 drives the air door 200 to the third position, the air door 200 closes the first air outlet duct 120, that is, the air door 200 blocks the first air outlet duct 120, so that the first air outlet duct 120 is not communicated with the installation cavity 110, and at this time the air door 200 does not block the second air outlet duct 130, so that the second air outlet duct 130 is communicated with the installation cavity 110, and thus the air in the installation cavity 110 can only be discharged from the second air outlet duct 130.

[0064] The centrifugal fan volute proposed in the embodiment of the present application drives the air door 200 to switch between the first position, the second position and the third position through the driving device 300, so that the air discharged by the impeller 400 is only discharged from the first air outlet duct 120, the air discharged by the impeller 400 is simultaneously discharged from both the first air outlet duct 120 and the second air outlet duct 130, or the air discharged by the impeller 400 is only discharged from the second air outlet duct 130. Since only one air door 200 is provided on the housing 100 of the centrifugal fan volute provided in the present application, compared with the existing double-outlet centrifugal fan that needs to be provided with two air doors 200, the centrifugal fan volute provided in the present application reduces the number of air doors 200, thereby reducing the input cost of the air door 200, and solving the technical problem of high cost caused by the need to control two air doors 200 in the existing double-outlet centrifugal fan.

[0065] In other embodiments, the air door 200 is arranged on the outer wall of the housing 100, and a first air door inlet and outlet 140 and a second air door inlet and outlet 150 are arranged on the housing 100. The first air door inlet and outlet 140 is communicated with the first air outlet duct 120, and the second air door inlet and outlet 150 is communicated with the second air outlet duct 130.

[0066] In the first position, the driving device 300 drives the air door 200 to at least partially pass through the second air door inlet and outlet 150 and enter the second air outlet duct 130 to close the second air outlet duct 130; in the second position, the driving device 300 drives the air door 200 to be located outside both the first air outlet duct 120 and the second air outlet duct 130 to simultaneously open the first air outlet duct 120 and the second air outlet duct 130; in the third position, the driving device 300 drives the air door 200 to at least partially pass through the first air door inlet and outlet 140 and enter the first air outlet duct 120 to close the first air outlet duct 120.

[0067] In this embodiment, as Figure 3 、 Figure 4 、Figure 5 and Figure 6 As shown in Figure 6 , the air damper 200 is disposed outside the housing 100. A first air damper inlet / outlet 140 and a second air damper inlet / outlet 150 are provided on the housing 100. The air damper 200 enters the first air outlet duct 120 through the first air damper inlet / outlet 140 to block the first air outlet duct 120; the air damper 200 enters the second air outlet duct 130 through the second air damper inlet / outlet 150 to block the second air outlet duct 130. When the air damper 200 is in the middle position, that is, the air damper 200 is located outside both the first air outlet duct 120 and the second air outlet duct 130, the first air outlet duct 120 and the second air outlet duct 130 can be opened simultaneously at this time.

[0068] In another embodiment, the driving device 300 includes a first driving motor 310, a second driving motor 320, a first gear 330 and a second gear 340. One side of the air damper 200 facing the housing 100 is slidably connected to the housing 100. A rack 210 is provided on the side of the air damper 200 facing away from the housing 100. The first driving motor 310 is disposed on the housing 100. The first driving motor 310 is connected to the rack 210 through the first gear 330 to drive the air damper 200 to penetrate into or out of the first air damper inlet / outlet 140. The second driving motor 320 is connected to the rack 210 through the second gear 340 to drive the air damper 200 to penetrate into or out of the second air damper inlet / outlet 150.

[0069] In this embodiment, as Figure 1 shown, the first driving motor 310 drives the first gear 330 to rotate, thereby driving the rack 210 to move, so that the air damper 200 moves, and thus the air damper 200 can be penetrated into or out of the first air damper inlet / outlet 140; similarly, the second driving motor 320 drives the second gear 340 to rotate, thereby driving the rack 210 to move, so that the air damper 200 moves, and thus the air damper 200 can be penetrated into or out of the second air damper inlet / outlet 150.

[0070] In a certain embodiment, a first air outlet of the first air outlet duct 120 is provided at one end of the first air outlet duct 120 away from the installation cavity 110, a second air outlet of the second air outlet duct 130 is provided at one end of the second air outlet duct 130 away from the installation cavity 110, and the diameter of the first air outlet 121 is the same as the diameter of the second air outlet 131.

[0071] In this embodiment, by setting the diameter of the first air outlet 121 to be the same as the diameter of the second air outlet 131, the wind speed of the wind blown out from the first air outlet 121 is ensured to be the same as the wind speed of the wind blown out from the second air outlet 131.

[0072] In some embodiments, the first air outlet duct 120 and the second air outlet duct 130 are centrosymmetric about the center of the installation cavity 110.

[0073] In this embodiment, since the first air outlet duct 120 and the second air outlet duct 130 are centrosymmetric about the center of the installation cavity 110, the force on the housing 100 is made uniform, thereby increasing the service life of the housing 100.

[0074] In a certain embodiment, a sound insulation layer 500 is provided on the side of the air damper 200 facing the installation cavity 110.

[0075] In this embodiment, as Figure 7 and Figure 8 shown, by providing a sound insulation layer 500 on the side of the air damper 200 facing the installation cavity 110, the noise generated during the operation of the centrifugal fan is reduced.

[0076] Furthermore, the sound insulation layer 500 can be a sponge layer.

[0077] In some possible embodiments, the housing 100 includes a front plate 101, an upper side plate 102, a rear plate 103, and a lower side plate 104 that are sequentially enclosed. The air inlet 111 is provided on the front plate 101, and the air damper 200 is provided on the upper side plate 102.

[0078] In this embodiment, as Figure 1 shown, in this embodiment, the air damper 200 is provided on the upper side plate 102, which can ensure the stability of the fixation of the air damper 200 and prevent the air damper 200 from loosening and falling off.

[0079] In other possible embodiments, a first windproof ring is provided on the periphery of the first air damper inlet and outlet 140, and a second windproof ring is provided on the periphery of the second air damper inlet and outlet 150.

[0080] In this embodiment, by providing the first windproof ring and the second windproof ring, air leakage at the first air damper inlet and outlet 140 or the second air damper inlet and outlet 150 can be avoided.

[0081] A second aspect of the embodiments of the present application provides a centrifugal fan, including a wind wheel 400, and further including the centrifugal fan volute of any of the above embodiments. The wind wheel 400 is disposed in the installation cavity 110 of the centrifugal fan volute.

[0082] Since the centrifugal fan provided in this application includes the centrifugal fan volute of any of the above embodiments, the centrifugal fan volute includes a housing 100, a damper 200, and a driving device 300. The centrifugal fan volute drives the damper 200 to switch between a first position, a second position, and a third position through the driving device 300, so that the air discharged by the impeller 400 only discharges from the first air duct 120, the air discharged by the impeller 400 simultaneously discharges from the first air duct 120 and the second air duct 130, or the air discharged by the impeller 400 only discharges from the second air duct 130. Since only one damper 200 is provided on the housing 100 of the centrifugal fan volute provided in this application, compared with the existing double-outlet centrifugal fan that needs to be provided with two dampers 200, the centrifugal fan provided in this application reduces the number of dampers 200, thereby reducing the input cost of the dampers 200, and solving the technical problem of high cost caused by the need to control two dampers 200 in the existing double-outlet centrifugal fan.

[0083] The third aspect of the embodiments of this application provides an air conditioner, including an air conditioner indoor unit, and further including the centrifugal fan of the above embodiments, and the centrifugal fan is arranged in the air conditioner indoor unit.

[0084] Since the air conditioner provided in the embodiments of this application includes the centrifugal fan of the above embodiments, the centrifugal fan in the air conditioner provided in this application reduces the number of dampers 200, thereby reducing the input cost of the dampers 200, and solving the technical problem of high cost caused by the need to control two dampers 200 in the existing air conditioner with a double-outlet centrifugal fan.

[0085] In other embodiments, a first air outlet and a second air outlet are provided on the air conditioner indoor unit, the first air outlet is arranged above the second air outlet, the first air duct 120 of the centrifugal fan volute is communicated with the first air outlet, and the second air duct 130 of the centrifugal fan volute is communicated with the second air outlet.

[0086] In this embodiment, since the first air duct 120 of the centrifugal fan volute is communicated with the first air outlet and the second air duct 130 of the centrifugal fan volute is communicated with the second air outlet, when the driving device 300 drives the damper 200 to be in the first position, the damper 200 closes the second air duct 130, so that the air in the installation cavity 110 can only be discharged from the first air duct 120, that is, the air conditioner air is discharged from the first air outlet;

[0087] When the driving device 300 drives the damper 200 to be in the second position, the damper 200 does not block the first air duct 120 and the second air duct 130, and the air in the installation cavity 110 can be discharged from the first air duct 120 and the second air duct 130 simultaneously, that is, the air conditioner air is discharged from the first air outlet and the second air outlet simultaneously.

[0088] When the driving device 300 drives the air door 200 to be in the third position, the air door 200 closes the first air outlet duct 120, so that the second air outlet duct 130 is communicated with the installation cavity 110. Thus, the air in the installation cavity 110 can only be discharged from the second air outlet duct 130, that is, the air-conditioning air is discharged from the second air outlet.

[0089] Therefore, the air conditioner of the present application can realize discharging air only from the upper air outlet, discharging air from the upper air outlet and the lower air outlet simultaneously, and discharging air only from the lower air outlet.

[0090] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A centrifugal fan volute, characterized in that: It comprises a housing (100), a damper (200) and a driving device (300); An installation cavity (110), a first air outlet duct (120) and a second air outlet duct (130) are arranged in the housing (100); the installation cavity (110) is used to install a wind wheel (400); an air inlet (111) is arranged on the installation cavity (110) for supplying air to the wind wheel (400); and the first air outlet duct (120) and the second air outlet duct (130) are both in communication with the installation cavity (110); The damper (200) is arranged on the housing (100), and the driving device (300) is connected to the damper (200) to drive the damper (200) to switch between a first position, a second position and a third position; When in the first position, the damper (200) closes the second air outlet (130) and opens the first air outlet (120), so that the wind exhausted by the wind wheel (400) is discharged from the first air outlet (120); when in the second position, the damper (200) opens the first air outlet (120) and the second air outlet (130) at the same time, so that the wind exhausted by the wind wheel (400) is discharged from the first air outlet (120) and the second air outlet (130) at the same time; when in the third position, the damper (200) closes the first air outlet (120) and opens the second air outlet (130), so that the wind exhausted by the wind wheel (400) is discharged from the second air outlet (130).

2. The centrifugal fan volute according to claim 1, characterized in that: The damper (200) is arranged on the outer wall of the housing (100); a first damper inlet and outlet (140) and a second damper inlet and outlet (150) are arranged on the housing (100); the first damper inlet and outlet (140) is communicated with the first air outlet (120); and the second damper inlet and outlet (150) is communicated with the second air outlet (130); When in the first position, the driving device (300) drives the damper (200) to at least partially pass through the second damper inlet and outlet (150) into the second air outlet (130), so that the damper (200) closes the second air outlet (130); when in the second position, the driving device (300) drives the damper (200) to be located outside the first air outlet (120) and the second air outlet (130), so as to simultaneously open the first air outlet (120) and the second air outlet (130); when in the third position, the driving device (300) drives the damper (200) to at least partially pass through the first damper inlet and outlet (140) into the first air outlet (120), so that the damper (200) closes the first air outlet (120).

3. The centrifugal fan volute according to claim 2, characterized in that: The driving device (300) comprises a first driving motor (310), a second driving motor (320), a first gear (330) and a second gear (340); the damper (200) is slidably connected to the housing (100) on one side facing the housing (100); a rack (210) is provided on the side of the damper (200) facing away from the housing (100); the first driving motor (310) is provided on the housing (100); the first driving motor (310) is connected to the rack (210) via the first gear (330) to drive the damper (200) to pass into or pass out of the first damper inlet / outlet (140); the second driving motor (320) is connected to the rack (210) via the second gear (340) to drive the damper (200) to pass into or pass out of the second damper inlet / outlet (150).

4. The centrifugal fan volute according to claim 1, characterized in that: A first air duct outlet (121) is provided at one end of the first air outlet duct (120) away from the installation cavity (110), and a second air duct outlet (131) is provided at one end of the second air outlet duct (130) away from the installation cavity (110), and the diameter of the first air duct outlet (121) is the same as the diameter of the second air duct outlet (131).

5. The centrifugal fan volute according to any one of claims 1 to 4, characterized in that: The first air outlet duct (120) and the second air outlet duct (130) are symmetrical about the center of the installation cavity (110).

6. The centrifugal fan volute according to any one of claims 1 to 4, characterized in that: A sound insulation layer (500) is provided on a side of the damper (200) facing the installation cavity (110).

7. The centrifugal fan volute according to any one of claims 1 to 4, characterized in that: The housing (100) comprises a front plate (101), an upper side plate (102), a rear plate (103) and a lower side plate (104) which are enclosed in sequence; the air inlet (111) is arranged on the front plate (101), and the damper (200) is arranged on the upper side plate (102).

8. A centrifugal fan, comprising a wind wheel (400), characterized in that: It also comprises a centrifugal fan volute according to any one of claims 1 to 7, wherein the wind wheel (400) is arranged in the installation cavity (110) of the centrifugal fan volute.

9. An air conditioner, comprising an air conditioner indoor unit, characterized in that: It also includes the centrifugal fan as claimed in claim 8, wherein the centrifugal fan is arranged in the indoor unit of the air conditioner.

10. The air conditioner according to claim 9, characterized in that: The air conditioner indoor unit is provided with a first air outlet and a second air outlet, wherein the first air outlet is arranged above the second air outlet, the first air outlet duct (120) of the centrifugal fan volute is connected to the first air outlet, and the second air outlet duct (130) of the centrifugal fan volute is connected to the second air outlet.

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