Air duct device and air conditioner with same

Abstract

The utility model provides an air duct device and an air conditioner with the air duct device, and the air duct device comprises a first centrifugal fan, a first volute tongue, a second centrifugal fan, a second volute tongue and a driving mechanism which are all installed on a device main body and located on the same side of the device main body. The first volute tongue and the second volute tongue are rotationally arranged and located on the periphery of the first centrifugal fan and the periphery of the second centrifugal fan correspondingly, the first volute tongue is configured to rotate to change the position so as to be matched with the first centrifugal fan to change the air outlet direction, and the second volute tongue is configured to rotate to change the position so as to be matched with the second centrifugal fan to change the air outlet direction; and the driving mechanism is simultaneously in driving connection with the first volute tongue and the second volute tongue. According to the air duct device, when the air duct device is applied to the cabinet type air conditioner, due to the fact that the driving component is in driving connection with the first volute tongue and the second volute tongue at the same time through the transmission component, the driving component can drive the first volute tongue and the second volute tongue to conduct position switching synchronously, the driving structure is simplified, and cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air conditioning technical field, concretely relates to a wind channel device and air conditioner with it. BACKGROUND

[0002] The position of the air outlet and the air inlet of the traditional air conditioner is relatively fixed, air can only enter the fixed air duct system through the designated air inlet, complete the fixed air flow and then blow out from the air outlet, so as to achieve the purpose of heating or cooling. However, the characteristics of hot air floating and cold air sinking make the comfort of this air direction fixed cycle air conditioner poor, and the time required to complete heating or cooling in this fixed air direction path is longer, and the energy consumption is more.

[0003] Therefore, a cabinet type air conditioner capable of changing the air circulation direction is developed, which has an upper air inlet and a lower air inlet and is equipped with two centrifugal fans and two volutes. The two volutes correspond to the two centrifugal fans respectively. When the cabinet type air conditioner is heating, the two volutes are controlled to rotate to the corresponding first position, and the two centrifugal fans are controlled to rotate forward so that the air conditioner takes in air from the upper air inlet and discharges air from the lower air inlet. The hot air discharged by the air conditioner gradually rises from the bottom of the room, and finally the whole room is heated, so as to achieve the purpose of rapid heating of the air conditioner by using the principle of hot air floating. When the cabinet type air conditioner is cooling, the two volutes are controlled to rotate to the corresponding second position, and the two centrifugal fans are controlled to rotate reversely so that the air conditioner takes in air from the lower air inlet and discharges air from the upper air inlet. The cold air discharged by the air conditioner gradually descends from the top of the room, and finally the whole room is cooled, so as to achieve the purpose of rapid cooling of the air conditioner by using the principle of cold air sinking.

[0004] Although the above-mentioned cabinet type air conditioner can achieve rapid heating and cooling by using the principles of hot air floating and cold air sinking, thereby saving energy and improving comfort. However, the two volutes working with the two centrifugal fans need to be driven by two different driving mechanisms for position switching, which undoubtedly increases the manufacturing cost of the air conditioner. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a wind channel device, which can solve the technical problem of the two volutes of the cabinet type air conditioner with upper and lower air inlets needing to be driven by two different driving mechanisms for position switching, thereby increasing the manufacturing cost of the air conditioner.

[0006] In order to solve the above problems, the utility model provides a kind of air duct device, including device main body, first centrifugal fan, first volute tongue, second centrifugal fan, second volute tongue and drive mechanism, the first centrifugal fan, first volute tongue, second centrifugal fan, second volute tongue and drive mechanism are all installed on the device main body and located the same side of the device main body, the first volute tongue is rotatably arranged and is at the periphery of the first centrifugal fan, the first volute tongue is configured as rotating transformation position to cooperate the first centrifugal fan to change air direction, the second volute tongue is rotatably arranged and is at the periphery of the second centrifugal fan, the second volute tongue is configured as rotating transformation position to cooperate the second centrifugal fan to change air direction, the drive mechanism is simultaneously driven connection with the first volute tongue and the second volute tongue.

[0007] In some embodiments, the drive mechanism includes a motor and a gear, the gear is sleeved on the output shaft of the motor, the first volute tongue has a first tooth portion, the second volute tongue has a second tooth portion, the gear is between the first volute tongue and the second volute tongue, and the gear is engaged with the first tooth portion and the second tooth portion at the same time.

[0008] In some embodiments, a first fan cavity, a first air duct, a second fan cavity, a second air duct and a connecting air duct are formed on the first side of the device main body; two ends of the connecting air duct lead to the first fan cavity and the second fan cavity respectively, the first centrifugal fan and the first volute tongue are installed in the first fan cavity, the first air duct leads to the first fan cavity, and the first air duct is on the side of the first fan cavity away from the second fan cavity; the second centrifugal fan and the second volute tongue are installed in the second fan cavity, the second air duct leads to the second fan cavity, and the second air duct is on the side of the second fan cavity away from the first fan cavity; the first volute tongue has a first position that connects the first fan cavity with the first air duct and blocks the first fan cavity from the connecting air duct, and the second volute tongue has a second position that connects the second fan cavity with the connecting air duct and blocks the second fan cavity from the second air duct; when the air duct device is in a state of air inlet from the second air duct and air outlet from the first air duct, the drive mechanism drives the first volute tongue to switch to the first position and drives the second volute tongue to switch to the second position.

[0009] In some embodiments, the first vane further has a third position to separate the first fan cavity from the first air duct and to communicate the first fan cavity with the connecting air duct, and the second vane further has a fourth position to separate the second fan cavity from the connecting air duct and to communicate the second fan cavity with the second air duct, and the driving mechanism drives the first vane to switch to the third position and drives the second vane to switch to the fourth position when the air duct device is in a state of taking in air from the first air duct and discharging air from the second air duct.

[0010] In some embodiments, the first side of the device body is further formed with a first auxiliary air duct leading to the first fan cavity, and the first auxiliary air duct is on a side of the first fan cavity away from the second fan cavity, and the first auxiliary air duct communicates with the connecting air duct when the first vane is in the first position.

[0011] In some embodiments, the first side of the device body is further formed with a second auxiliary air duct leading to the second fan cavity, and the second auxiliary air duct is on a side of the second fan cavity away from the first fan cavity, and the second auxiliary air duct communicates with the connecting air duct when the second vane is in the fourth position.

[0012] In some embodiments, the device body is provided with a first air door and a second air door, the first air door has a first open state to communicate the first auxiliary air duct with the connecting air duct and a first closed state to separate the first auxiliary air duct from the first fan cavity, and the second air door has a second open state to communicate the second auxiliary air duct with the connecting air duct and a second closed state to separate the second auxiliary air duct from the second fan cavity; when the first vane is in the first position and the second vane is in the second position, the first air door switches to the first open state and the second air door switches to the second closed state; when the first vane is in the third position and the second vane is in the fourth position, the first air door switches to the first closed state and the second air door switches to the second open state.

[0013] The utility model further provides a kind of air conditioner, comprising the air duct device of preceding description.

[0014] In some embodiments, one end of the device body is assembled with a first air passing component, the first air passing component has a first main channel and two first branch channels, the first air duct communicates with the first main channel through one of the first branch channels, and the first auxiliary air duct communicates with the first main channel through the other first branch channel, and a section of the first main channel away from the first branch channel forms a first air outlet.

[0015] In some embodiments, the other end of the device body is assembled with a second air passing component, the second air passing component has a second main passage and two second sub-passage, the second air duct communicates with the second main passage through one of the second sub-passage, and the second auxiliary air duct communicates with the second main passage through the other second sub-passage, and the second main passage is formed with a second air outlet away from the second sub-passage.

[0016] The air duct device and the air conditioner having the same have the following beneficial effects:

[0017] When the air duct device is applied to a cabinet type air conditioner, since the driving component is simultaneously connected with the first volute tongue and the second volute tongue through the transmission component, the driving component can drive the first volute tongue and the second volute tongue to synchronously switch positions, so as to cooperate with the first centrifugal fan and the second centrifugal fan to correspondingly switch air inlets and outlets when the cabinet type air conditioner is heating or cooling. That is, the application realizes that one driving component is used to simultaneously drive two volute tongues to switch positions, thereby simplifying the driving structure and reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0019] Figure 1 It is a front view of the air conditioner of the embodiment of the present application when air is inhaled from the top and discharged from the bottom;

[0020] Figure 2 It is a side view of the air conditioner of the embodiment of the present application when air is inhaled from the top and discharged from the bottom;

[0021] Figure 3 It is a front view of the air conditioner of the embodiment of the present application when air is inhaled from the bottom and discharged from the top;

[0022] Figure 4 It is a side view of the air conditioner of the embodiment of the present application when air is inhaled from the bottom and discharged from the top;

[0023] Figure 5 It is an exploded schematic view of the air conditioner of the embodiment of the present application;

[0024] Figure 6 It is an internal schematic view of the air conditioner of the embodiment of the present application.

[0025] The signs are represented as:

[0026] 1, device body; 2, first centrifugal fan; 3, first volute tongue; 4, second centrifugal fan; 5, second volute tongue; 6, first fan cavity; 7, first air duct; 8, second fan cavity; 9, second air duct; 10, connecting air duct; 11, gear; 12, first tooth part; 13, second tooth part; 14, first auxiliary air duct; 15, second auxiliary air duct; 16, first air door; 17, second air door; 18, first air passing component; 19, first main passage; 20, first branch passage; 21, second air passing component; 22, second main passage; 23, second branch passage; 24, indoor heat exchanger; 25, bottom plate; 26, front panel; 27, rear shell; 28, left side plate; 29, right side plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0029] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "top", "bottom", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "below" other elements or features would then be oriented "below" or "above" other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial relative descriptors used herein interpreted accordingly.

[0030] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not connote any actual physical or chronological order, but are used to distinguish one element from another. Unless otherwise stated, the use of such words is not intended to imply a special relationship or order among the elements.

[0031] With reference to Figures 1 to 6 According to the embodiment of the present application, a duct device is provided, which comprises a device main body 1, a first centrifugal fan 2, a first volute tongue 3, a second centrifugal fan 4, a second volute tongue 5, and a driving mechanism. The first centrifugal fan 2, the first volute tongue 3, the second centrifugal fan 4, the second volute tongue 5, and the driving mechanism are all mounted on the device main body 1 and located on the same side of the device main body 1. The first volute tongue 3 is rotatably arranged and located at the periphery of the first centrifugal fan 2. The first volute tongue 3 is configured to rotate and change position to cooperate with the first centrifugal fan 2 to change the air outlet direction. The second volute tongue 5 is rotatably arranged and located at the periphery of the second centrifugal fan 4. The second volute tongue 5 is configured to rotate and change position to cooperate with the second centrifugal fan 4 to change the air outlet direction. The driving mechanism is simultaneously drivingly connected with the first volute tongue 3 and the second volute tongue 5.

[0032] In the technical solution, when the duct device of the present application is applied to a cabinet air conditioner, since the driving part is simultaneously drivingly connected with the first volute tongue 3 and the second volute tongue 5 through the transmission part, the driving part can drive the first volute tongue 3 and the second volute tongue 5 to synchronously change position, so as to cooperate with the first centrifugal fan 2 and the second centrifugal fan 4 to perform corresponding air inlet and outlet when the cabinet air conditioner is heating or cooling. That is, the present application realizes the position change of two volute tongues simultaneously driven by one driving part, thereby simplifying the driving structure and reducing the cost.

[0033] With reference to Figure 1 , Figure 3 and Figure 6As shown, the driving mechanism includes a motor (not shown) and a gear 11 sleeved on the output shaft of the motor, the first volute tongue 3 has a first tooth portion 12, the second volute tongue 5 has a second tooth portion 13, and the gear 11 is located between the first volute tongue 3 and the second volute tongue 5 and is engaged with the first tooth portion 12 and the second tooth portion 13 at the same time.

[0034] In the embodiment, since the gear 11 is sleeved on the output shaft of the motor and is engaged with the first tooth portion 12 and the second tooth portion 13 at the same time, when the motor drives the gear 11 to rotate, the gear 11 drives the first volute tongue 3 and the second volute tongue 5 to rotate synchronously, so that the two volute tongues are driven to switch positions by using one set of driving mechanism, and the reliability and stability of the two volute tongues during position switching are ensured. It should be understood that, in addition to the gear 11, the motor can also drive the first volute tongue 3 and the second volute tongue 5 to rotate synchronously by using other transmission structures such as a connecting rod assembly. It should be noted that the motor is fixed on a motor support installed on the device main body 1 to ensure stable operation.

[0035] Referring to Figure 1 As shown, the first side of the device main body 1 is formed with a first fan cavity 6, a first air duct 7, a second fan cavity 8, a second air duct 9 and a connecting air duct 10. The connecting air duct 10 is connected to the first fan cavity 6 and the second fan cavity 8 respectively, the first centrifugal fan 2 and the first volute tongue 3 are installed in the first fan cavity 6, the first air duct 7 is connected to the first fan cavity 6 and is located on the side of the first fan cavity 6 away from the second fan cavity 8. The second centrifugal fan 4 and the second volute tongue 5 are installed in the second fan cavity 8, the second air duct 9 is connected to the second fan cavity 8 and is located on the side of the second fan cavity 8 away from the first fan cavity 6. The first volute tongue 3 has a first position for connecting the first fan cavity 6 and the first air duct 7 and for blocking the first fan cavity 6 and the connecting air duct 10, and the second volute tongue 5 has a second position for connecting the second fan cavity 8 and the connecting air duct 10 and for blocking the second fan cavity 8 and the second air duct 9. When the air duct device is in a state of taking in air from the second air duct 9 and discharging air from the first air duct 7, the driving mechanism drives the first volute tongue 3 to switch to the first position and drives the second volute tongue 5 to switch to the second position.

[0036] In the technical solution, when the air duct device is applied to a cabinet air conditioner, the first centrifugal fan 2 can be a lower fan of the cabinet air conditioner, the first air duct 7 can be a lower air duct of the cabinet air conditioner, the second centrifugal fan 4 can be an upper fan of the cabinet air conditioner, and the second air duct 9 can be an upper air duct of the cabinet air conditioner. When the driving member drives the first volute tongue 3 to switch to the first position and drives the second volute tongue 5 to switch to the second position through the transmission member, the first centrifugal fan 2 and the second centrifugal fan 4 can be controlled to rotate forward, and then the air flow entering from the second air duct 9 bypasses the second volute tongue 5 and enters from the side of the first centrifugal fan 2 and the second centrifugal fan 4, respectively. The air flow entering the second centrifugal fan 4 flows downward from the connecting air duct 10 under the driving of the second centrifugal fan 4, and the air flow entering the first centrifugal fan 2 flows downward from the first air duct 7 under the driving of the first centrifugal fan 2, thereby realizing the characteristics of upper air inlet and lower air outlet of the cabinet air conditioner during heating, and further achieving the purpose of comfortable heating.

[0037] Referring to Figure 3 As shown in the figure, the first volute tongue 3 also has a third position for cutting off the first fan cavity 6 from the first air duct 7 and connecting the first fan cavity 6 with the connecting air duct 10, and the second volute tongue 5 also has a fourth position for cutting off the second fan cavity 8 from the connecting air duct 10 and connecting the second fan cavity 8 with the second air duct 9. When the air duct device is in a state of air inlet from the first air duct 7 and air outlet from the second air duct 9, the driving mechanism drives the first volute tongue 3 to switch to the third position and drives the second volute tongue 5 to switch to the fourth position.

[0038] In the embodiment, when the air duct device is applied to a cabinet air conditioner, the first centrifugal fan 2 can be a lower fan of the cabinet air conditioner, the first air duct 7 can be a lower air duct of the cabinet air conditioner, the second centrifugal fan 4 can be an upper fan of the cabinet air conditioner, and the second air duct 9 can be an upper air duct of the cabinet air conditioner. When the driving member drives the first volute tongue 3 to switch to the third position and drives the second volute tongue 5 to switch to the fourth position through the transmission member, the first centrifugal fan 2 and the second centrifugal fan 4 can be controlled to rotate reversely, and then the air flow entering from the first air duct 7 bypasses the first volute tongue 3 and enters from the side of the first centrifugal fan 2 and the second centrifugal fan 4, respectively. The air flow entering the first centrifugal fan 2 flows upward from the connecting air duct 10 under the driving of the first centrifugal fan 2, and the air flow entering the second centrifugal fan 4 flows upward from the second air duct 9 under the driving of the second centrifugal fan 4, thereby realizing the characteristics of lower air inlet and upper air outlet of the cabinet air conditioner during cooling, and further achieving the purpose of comfortable cooling.

[0039] Referring to Figure 1 As shown in the figure, the first side of the device body 1 further forms a first auxiliary air duct 14, the first auxiliary air duct 14 leads to the first fan cavity 6, and the first auxiliary air duct 14 is located on the side of the first fan cavity 6 away from the second fan cavity 8. When the first volute tongue 3 is in the first position, the first auxiliary air duct 14 is in communication with the connecting air duct 10.

[0040] In the technical scheme, when the driving component drives the first volute tongue 3 to switch to the first position and drives the second volute tongue 5 to switch to the second position through the transmission component, the airflow driven by the second centrifugal fan 4 can be made to sequentially flow downwards along the connecting air duct 10 and the first auxiliary air duct 14, so that the smoothness of the airflow is ensured, the air resistance is reduced, and then the air volume of the lower air outlet during heating of the cabinet air conditioner is ensured.

[0041] Referring to Figure 3 As shown in the figure, the first side of the device body 1 further forms a second auxiliary air duct 15, the second auxiliary air duct 15 leads to the second fan cavity 8, and the second auxiliary air duct 15 is located on the side of the second fan cavity 8 away from the first fan cavity 6. When the second volute tongue 5 is in the fourth position, the second auxiliary air duct 15 is in communication with the connecting air duct 10.

[0042] In the embodiment, when the driving component drives the first volute tongue 3 to switch to the third position and drives the second volute tongue 5 to switch to the fourth position through the transmission component, the airflow driven by the first centrifugal fan 2 can be made to sequentially flow upwards along the connecting air duct 10 and the second auxiliary air duct 15, so that the smoothness of the airflow is ensured, the air resistance is reduced, and then the air volume of the upper air outlet during cooling of the cabinet air conditioner is ensured.

[0043] Referring to Figure 1 and Figure 3 As shown in the figure, the device body 1 is provided with a first air door 16 and a second air door 17. The first air door 16 has a first opening state of making the first auxiliary air duct 14 in communication with the connecting air duct 10 and a first closing state of making the first auxiliary air duct 14 isolated from the first fan cavity 6, and the second air door 17 has a second opening state of making the second auxiliary air duct 15 in communication with the connecting air duct 10 and a second closing state of making the second auxiliary air duct 15 isolated from the second fan cavity 8. When the first volute tongue 3 is in the first position and the second volute tongue 5 is in the second position, the first air door 16 is switched to the first opening state, and the second air door 17 is switched to the second closing state; when the first volute tongue 3 is in the third position and the second volute tongue 5 is in the fourth position, the first air door 16 is switched to the first closing state, and the second air door 17 is switched to the second opening state.

[0044] In the technical scheme, when the first volute tongue 3 is in the first position and the second volute tongue 5 is in the second position, if the second air door 17 is switched to the second closing state, the second air door 17 will isolate the second auxiliary air duct 15 from the second fan cavity 8, so that the airflow driven by the second centrifugal fan 4 can be prevented from flowing upwards from the second auxiliary air duct 15, thereby ensuring the air volume of the lower air outlet. As Figure 2As shown, the indoor heat exchanger 24 of the cabinet air conditioner is usually installed at the air inlet side of the first centrifugal fan 2 and the second centrifugal fan 4, i.e. the first side of the device main body 1. When the cabinet air conditioner is heating, the air flow entering from the second air duct 9 passes through the indoor heat exchanger 24 and then enters the first centrifugal fan 2 and the second centrifugal fan 4, and then flows downward under the driving of the first centrifugal fan 2 and the second centrifugal fan 4. The air flow entering from the second auxiliary air duct 15 does not pass through the indoor heat exchanger 24, but bypasses the second air door 17 and then flows downward along the connecting air duct 10 and the first auxiliary air duct 14. Therefore, this air flow does not pass through the indoor heat exchanger 24, so that the air flow resistance can be reduced, thereby increasing the air outlet volume when the cabinet air conditioner is heating.

[0045] Further, when the first volute tongue 3 is in the third position and the second volute tongue 5 is in the fourth position, if the first air door 16 is switched to the first closed state, the first air door 16 will separate the first auxiliary air duct 14 from the first fan cavity 6, so as to prevent the air flow driven by the first centrifugal fan 2 from flowing downward from the first auxiliary air duct 14, thereby ensuring the air outlet volume. When the cabinet air conditioner is cooling, the air flow entering from the first air duct 7 passes through the indoor heat exchanger 24 and then enters the first centrifugal fan 2 and the second centrifugal fan 4, and then flows upward under the driving of the first centrifugal fan 2 and the second centrifugal fan 4. The air flow entering from the first auxiliary air duct 14 does not pass through the indoor heat exchanger 24, but bypasses the first air door 16 and then flows upward along the connecting air duct 10 and the second auxiliary air duct 15. Therefore, this air flow does not pass through the indoor heat exchanger 24, so that the air flow resistance can be reduced, thereby increasing the air outlet volume when the cabinet air conditioner is cooling.

[0046] The utility model also provides a kind of air conditioner, comprising the air duct device of preceding description, and air conditioner especially refers to cabinet air conditioner.

[0047] For reference Figures 1 to 4 One end of the device main body 1 is assembled with a first air passing component 18, the first air passing component 18 has a first main passage 19 and two first branch passages 20, the first air duct 7 is communicated with the first main passage 19 through one of the first branch passages 20, and the first auxiliary air duct 14 is communicated with the first main passage 19 through the other first branch passage 20, and a section of the first main passage 19 away from the first branch passage 20 forms a first air outlet.

[0048] In the embodiment, the first air passing component 18 is located at the bottom of the device body 1, and the first air outlet is the lower air outlet of the cabinet air conditioner, which faces forward. By making the first air passing component 18 have the first main passage 19 and the two first sub-passages 20, if the cabinet air conditioner is cooling, the air flow entering from the first main passage 19 will be divided into two flows under the action of the two first sub-passages 20. One of the two flows travels along the route of the first auxiliary air duct 14-connection air duct 10-second auxiliary air duct 15, and the other travels along the route of the first air duct 7-indoor heat exchanger 24-first centrifugal fan 2-second centrifugal fan 4-second air duct 9. That is, both of the two flows can travel along the predetermined route, thereby ensuring the air volume when the cabinet air conditioner is cooling.

[0049] For reference Figures 1 to 4 The other end of the device body 1 is assembled with a second air passing component 21, which has a second main passage 22 and two second sub-passages 23. The second air duct 9 communicates with the second main passage 22 through one of the second sub-passages 23, and the second auxiliary air duct 15 communicates with the second main passage 22 through the other second sub-passage 23. The end of the second main passage 22 away from the second sub-passage 23 forms a second air outlet.

[0050] In the technical scheme, the second air passing component 21 is located at the top of the device body 1, and the second air outlet is the upper air outlet of the cabinet air conditioner, which faces upward. By making the second air passing component 21 have the second main passage 22 and the two second sub-passages 23, if the cabinet air conditioner is heating, the air flow entering from the second main passage 22 will be divided into two flows under the action of the two second sub-passages 23. One of the two flows travels along the route of the second auxiliary air duct 15-connection air duct 10-first auxiliary air duct 14, and the other travels along the route of the second air duct 9-indoor heat exchanger 24-first centrifugal fan 2-second centrifugal fan 4-first air duct 7. That is, both of the two flows can travel along the predetermined route, thereby ensuring the air volume when the cabinet air conditioner is heating.

[0051] It should be noted that the cabinet air conditioner also includes a bottom plate 25, a front panel 26, a rear shell 27, a left side plate 28, and a right side plate 29. The front panel 26, the rear shell 27, the left side plate 28, and the right side plate 29 are combined to form a shell of the cabinet air conditioner. The bottom plate 25 is assembled at the bottom of the shell, and the air duct device, the first air passing component 18, and the second air passing component 21 are all installed in the shell.

[0052] It is easy for those skilled in the art to understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0053] The above merely is the preferred embodiment of the present application, and does not limit the present application, and any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is merely the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principle of the present application, a number of improvements and modifications can be made, and these improvements and modifications shall be considered as the protection scope of the present application.

Claims

1. An air duct arrangement, characterized in that The device comprises a device body (1), a first centrifugal fan (2), a first volute tongue (3), a second centrifugal fan (4), a second volute tongue (5) and a driving mechanism, the first centrifugal fan (2), the first volute tongue (3), the second centrifugal fan (4), the second volute tongue (5) and the driving mechanism are all installed on the device body (1) and located on the same side of the device body (1), the first volute tongue (3) is rotatably arranged at the periphery of the first centrifugal fan (2), the first volute tongue (3) is configured to rotate and change position to cooperate with the first centrifugal fan (2) to change the air outlet direction, the second volute tongue (5) is rotatably arranged at the periphery of the second centrifugal fan (4), the second volute tongue (5) is configured to rotate and change position to cooperate with the second centrifugal fan (4) to change the air outlet direction, the driving mechanism is simultaneously drivingly connected with the first volute tongue (3) and the second volute tongue (5).

2. The air duct arrangement of claim 1, wherein, The driving mechanism comprises a motor and a gear (11), the gear (11) is sleeved on the output shaft of the motor, the first volute tongue (3) has a first tooth portion (12), the second volute tongue (5) has a second tooth portion (13), the gear (11) is located between the first volute tongue (3) and the second volute tongue (5), and the gear (11) is simultaneously engaged with the first tooth portion (12) and the second tooth portion (13).

3. A duct arrangement according to claim 1 or 2, characterised in that A first fan cavity (6), a first air duct (7), a second fan cavity (8), a second air duct (9) and a connecting air duct (10) are formed on the first side of the device body (1); The two ends of the connecting air duct (10) respectively lead to the first fan cavity (6) and the second fan cavity (8), the first centrifugal fan (2) and the first volute tongue (3) are both installed in the first fan cavity (6), the first air duct (7) leads to the first fan cavity (6), and the first air duct (7) is located on the side of the first fan cavity (6) away from the second fan cavity (8); The second centrifugal fan (4) and the second volute tongue (5) are installed in the second fan cavity (8), the second air duct (9) leads to the second fan cavity (8), and the second air duct (9) is located on the side of the second fan cavity (8) away from the first fan cavity (6); The first volute tongue (3) has a first position that communicates the first fan cavity (6) with the first air duct (7) and blocks the first fan cavity (6) from the connecting air duct (10), the second volute tongue (5) has a second position that communicates the second fan cavity (8) with the connecting air duct (10) and blocks the second fan cavity (8) from the second air duct (9), in the state that the air duct device takes in air from the second air duct (9) and discharges air from the first air duct (7), the driving mechanism drives the first volute tongue (3) to switch to the first position and drives the second volute tongue (5) to switch to the second position.

4. The air duct arrangement of claim 3, wherein, The first volute tongue (3) also has a third position for cutting off the first fan cavity (6) from the first air duct (7) and for connecting the first fan cavity (6) with the connecting air duct (10), and the second volute tongue (5) also has a fourth position for cutting off the second fan cavity (8) from the connecting air duct (10) and for connecting the second fan cavity (8) with the second air duct (9), when the air duct device is in a state of taking in air from the first air duct (7) and discharging air from the second air duct (9), the driving mechanism drives the first volute tongue (3) to switch to the third position and drives the second volute tongue (5) to switch to the fourth position.

5. The air duct arrangement of claim 4, wherein, The first side of the device body (1) is also formed with a first auxiliary air duct (14) leading to the first fan cavity (6), and the first auxiliary air duct (14) is on the side of the first fan cavity (6) away from the second fan cavity (8), when the first volute tongue (3) is in the first position, the first auxiliary air duct (14) is connected with the connecting air duct (10).

6. The air duct arrangement of claim 5, wherein, The first side of the device body (1) is also formed with a second auxiliary air duct (15) leading to the second fan cavity (8), and the second auxiliary air duct (15) is on the side of the second fan cavity (8) away from the first fan cavity (6), when the second volute tongue (5) is in the fourth position, the second auxiliary air duct (15) is connected with the connecting air duct (10).

7. The air duct arrangement of claim 6, wherein The device body (1) is provided with a first air door (16) and a second air door (17), the first air door (16) has a first open state for connecting the first auxiliary air duct (14) with the connecting air duct (10) and a first closed state for cutting off the first auxiliary air duct (14) from the first fan cavity (6), and the second air door (17) has a second open state for connecting the second auxiliary air duct (15) with the connecting air duct (10) and a second closed state for cutting off the second auxiliary air duct (15) from the second fan cavity (8); When the first volute tongue (3) is in the first position and the second volute tongue (5) is in the second position, the first air door (16) switches to the first open state and the second air door (17) switches to the second closed state; when the first volute tongue (3) is in the third position and the second volute tongue (5) is in the fourth position, the first air door (16) switches to the first closed state and the second air door (17) switches to the second open state.

8. An air conditioner characterized by comprising: The air duct device comprises the device body (1), the first fan cavity (6), the second fan cavity (8), the first air duct (7), the second air duct (9), the connecting air duct (10), the first volute tongue (3), the second volute tongue (5), the driving mechanism, the first auxiliary air duct (14), the second auxiliary air duct (15), the first air door (16) and the second air door (17).

9. The air conditioner of claim 8, wherein One end of the device body (1) is assembled with a first air passing component (18), the first air passing component (18) has a first main channel (19) and two first branch channels (20), the first air duct (7) communicates with the first main channel (19) through one of the first branch channels (20), the first auxiliary air duct (14) communicates with the first main channel (19) through the other first branch channel (20), and a section of the first main channel (19) away from the first branch channels (20) forms a first air outlet.

10. The air conditioner of claim 8, wherein The other end of the device body (1) is assembled with a second air passing component (21), the second air passing component (21) has a second main channel (22) and two second branch channels (23), the second air duct (9) communicates with the second main channel (22) through one of the second branch channels (23), the second auxiliary air duct (15) communicates with the second main channel (22) through the other second branch channel (23), and one end of the second main channel (22) away from the second branch channels (23) forms a second air outlet.

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