WO2019242449A1

WO2019242449A1 - Cabinet indoor air-conditioning unit

Info

Publication number: WO2019242449A1
Application number: PCT/CN2019/087854
Authority: WO
Inventors: 孙婷; 郝本华; 成汝振; 王佳林; 刘兢; 张培虎; 蔡婷婷
Original assignee: 青岛海尔空调器有限总公司
Priority date: 2018-06-19
Filing date: 2019-05-21
Publication date: 2019-12-26
Also published as: CN110686318A

Abstract

A cabinet indoor air-conditioning unit (100). The cabinet indoor air-conditioning unit (100) comprises a housing (110), an upper centrifugal fan (120), a lower centrifugal fan (130), an air guide channel (140), and an indoor heat exchanger (170). The housing (110) is provided with a housing air inlet (200), an upper air outlet (111), a middle air outlet (112), and a lower air outlet (113). The top and bottom of the air guide channel (140) are provided with a top air vent (141) and a bottom air vent (142) respectively, the front wall is provided with a channel air outlet, and the air guide channel (140) is communicated with the volute casing air channel of the upper centrifugal fan (120) and the volute casing air channel of the lower centrifugal fan (130) respectively by means of the top air vent (141) and the bottom air vent (142). The fan air outlet of the upper centrifugal fan (120), the channel air outlet, and the fan air outlet of the lower centrifugal fan (130) are configured to supply air to the upper air outlet (111), the middle air outlet (112), and the lower air outlet (113) respectively, so that the cabinet indoor air-conditioning unit (100) can supply air to some of the air outlets (111, 112, 113) of the housing (110) or supply air to the three air outlets (111, 112, 113) simultaneously simply by means of the blades of the two centrifugal fans (120, 130), and has high flexibility.

Description

Cabinet type air conditioner indoor unit

Technical field

The invention relates to the field of air treatment, in particular to a cabinet-type air conditioner indoor unit.

Background technique

In the prior art, a cabinet-type air conditioner indoor unit that uses a centrifugal fan to supply air is mostly arranged on the upper part of the cabinet, which not only has a small air outlet area, but also corresponds to the human head and the space above the head. In a hot state, the hot air flow moves upwards and it is difficult to reach the user's feet. The temperature above is high, the temperature below is low, and user comfort is low. Comprehensively considered, a cabinet air conditioner indoor unit capable of partitioned air supply is needed in design.

Summary of the Invention

It is an object of the present invention to provide a cabinet-type air conditioner indoor unit capable of partitioning air supply.

A further object of the present invention is to diversify the air supply modes of the cabinet type air conditioner indoor unit.

Another further object of the present invention is to make the gas flow more smoothly in the air guide channel and the volute duct of the upper centrifugal fan and the lower centrifugal fan.

An object of the present invention is to provide a cabinet-type air conditioner indoor unit, including:

Case, with organic case air inlet and multiple case air outlets;

An upper centrifugal fan and a lower centrifugal fan, which are disposed in the casing and located at the upper and lower portions of the casing, respectively; and

The indoor heat exchanger is disposed on the air inlet flow path between the casing air inlet and the upper centrifugal fan and the lower centrifugal fan; wherein the cabinet-type air conditioner indoor unit further includes:

The top and bottom of the air guide channel are respectively provided with a top vent and a bottom vent, and a front wall is provided with a channel air outlet, and the air duct is set to be centrifuged with the upper part through the top vent and the bottom vent respectively. The volute of the fan is in communication with the volute of the lower centrifugal fan; and

The plurality of casing air outlets are an upper air outlet, a middle air outlet, and a lower air outlet, respectively. The fan air outlets, the channel air outlets, and the fan air outlets of the lower centrifugal fan correspond to the upper air outlet The middle air outlet and the lower air outlet are set.

Optionally, the cabinet-type air conditioner indoor unit further includes:

An upper adjusting plate configured to be rotatable between an open position where the top vent is opened and a fan outlet of the upper centrifugal fan is closed and a closed position where the top vent is closed; and

The lower regulating plate is configured to be rotatable between an open position where the bottom vent is opened and a fan outlet of the lower centrifugal fan is closed and a closed position where the bottom vent is closed.

Optionally, in a normal working mode, the upper and lower regulating plates are respectively rotated to their closed positions; and the impellers of the upper and lower centrifugal fans are configured to work synchronously.

Optionally, in the energy-saving heating mode, the lower regulating plate is rotated to its closed position, and the impeller of the lower centrifugal fan is operated; and / or

In the energy-saving cooling mode, the upper regulating plate is rotated to its closed position, and the impeller of the upper centrifugal fan works.

Optionally, in the powerful heating mode, the upper regulating plate is rotated to its open position, the lower regulating plate is moved to its closed position, and the impellers of the upper and lower centrifugal fans work synchronously; and / or

In the powerful cooling mode, the upper regulating plate is rotated to its closed position, the lower regulating plate is moved to its open position, and the impellers of the upper centrifugal fan and the lower centrifugal fan work synchronously.

Optionally, in the comfortable air supply mode, the upper and lower regulating plates are respectively rotated to their open positions, and the impellers of the upper and lower centrifugal fans work synchronously.

Optionally, in the custom mode, the upper adjusting plate and the lower adjusting plate are respectively set to rotate to their closed positions or an intermediate position between their opened and closed positions according to an adjustment instruction input by the user, And the impellers of the upper centrifugal fan and the lower centrifugal fan work synchronously.

Optionally, the middle air outlet is composed of a first air outlet and a second air outlet that are respectively opened at two lateral ends of the front side wall of the cabinet.

Optionally, the thicknesses of the upper regulating plate and the lower regulating plate are both set to gradually decrease from their connecting ends to their free ends.

Optionally, the air guide channel is configured to be smoothly connected to the volute of the upper centrifugal fan and the volute of the lower centrifugal fan; and / or

The upper surface of the upper regulating plate is configured to be smoothly transitionally connected to the inner wall of the air guide passage and the inner wall of the volute duct of the upper centrifugal fan when it is in the open position and the closed position, respectively; and / or

The surface of the lower regulating plate is configured to be smoothly transitionally connected to the inner wall of the air guide passage and the inner wall of the volute duct of the lower centrifugal fan when it is in the open position and the closed position, respectively.

In the invention, the upper and lower centrifugal fans are arranged in the casing, and the air guide channel of the volute of the upper centrifugal fan and the lower centrifugal fan is provided in the front wall with a channel air outlet, and the fan of the upper centrifugal fan is provided. The air outlets, channel air outlets, and fan air outlets of the lower centrifugal fan are configured to supply air to the upper air outlet, the middle air outlet, and the lower air outlet, respectively, so that the cabinet-type air conditioner indoor unit of the present invention can achieve partial air outlets to the cabinet. The air supply or the wind through the impellers of the two centrifugal fans to the three outlets of the cabinet at the same time has high flexibility.

Further, the present invention is provided with an upper adjusting plate and a lower adjusting plate that can be opened and closed corresponding to the ventilation openings at the top ventilation opening and the bottom ventilation opening of the air guide channel respectively, so that the cabinet-type air conditioner indoor unit of the present invention can be It is required to adjust the air outlet ratio of the upper air outlet, the middle air outlet, and the lower air outlet, thereby achieving diversification of the air supply mode and improving the user experience.

Further, in the present invention, the thicknesses of the upper and lower adjusting plates are designed to gradually decrease from their connecting ends to their free ends, which not only facilitates the gas to the upper air outlet and the top vent when the upper adjusting plate is in the middle position. Diversion, when the lower regulating plate is in the middle position, it is convenient for the gas to be diverted to the lower air outlet and the bottom vent, reducing wind resistance, increasing the gas flow rate, and also optimizing the board surface profile so that the board surface can match the The inner wall of the volute duct and the inner wall of the air guide channel are connected smoothly and smoothly, which improves the smoothness of gas flow in the air guide channel and the volute of the upper centrifugal fan and the lower centrifugal fan.

Based on the following detailed description of specific embodiments of the present invention with reference to the accompanying drawings, those skilled in the art will more clearly understand the foregoing and other objects, advantages, and features of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar components or parts. Those skilled in the art will appreciate that these drawings are not necessarily drawn to scale. In the drawings:

1 is a schematic front view of a cabinet-type air conditioner indoor unit according to an embodiment of the present invention;

2 is a schematic sectional view of the cabinet-type air conditioner indoor unit shown in FIG. 1 when the upper and lower regulating plates are in a closed position;

3 is a schematic cross-sectional view of the cabinet-type air conditioner indoor unit shown in FIG. 1 when an upper adjusting plate is in an open position and a lower adjusting plate is in a closed position;

4 is a schematic cross-sectional view of the cabinet type air conditioner indoor unit shown in FIG. 1 when the upper regulating plate is in a closed position and the lower regulating plate is in an open position;

5 is a schematic cross-sectional view of the cabinet-type air conditioner indoor unit shown in FIG. 1 when the upper and lower regulating plates are in an open position;

6 is a schematic cross-sectional view of the cabinet type air conditioner indoor unit shown in FIG. 1 when the upper adjusting plate is in a closed position and the lower adjusting plate is in an intermediate position;

7 is a schematic cross-sectional view of the cabinet-type air conditioner indoor unit shown in FIG. 1 when the upper regulating plate is in a middle position and the lower regulating plate is in an open position;

8 is a schematic cross-sectional view of the cabinet type air conditioner indoor unit shown in FIG. 1 when the upper and lower regulating plates are in an intermediate position;

FIG. 9 is a schematic rear view of a cabinet type air conditioner indoor unit according to an embodiment of the present invention.

detailed description

FIG. 1 is a schematic front view of a cabinet-type air-conditioning indoor unit 100 according to an embodiment of the present invention; FIG. 2 is a cabinet-type air-conditioning indoor unit 100 shown in FIG. 1 when the upper and

lower adjusting plates

150 and 160 are in a closed position; A schematic cross-sectional view taken. FIG. 9 is a schematic rear view of a cabinet type air conditioner indoor unit according to an embodiment of the present invention. Referring to FIG. 1, FIG. 2 and FIG. 9, the cabinet type air conditioner indoor unit 100 may include a cabinet 110 defining an organic casing air inlet 200 and a plurality of casing outlets, an upper centrifugal fan 120, and a lower portion of the upper centrifugal fan 120. A lower centrifugal fan 130 and an indoor heat exchanger 170 disposed on the air inlet flow path between the casing air inlet and the upper centrifugal fan 120 and the lower centrifugal fan 130. The number of casing air inlets 200 may be one or more.

In particular, the cabinet-type air conditioner indoor unit 100 may further include an air guide channel 140 for communicating the upper centrifugal fan 120 and the lower centrifugal fan 130. The top and bottom of the air guide channel 140 are respectively provided with a top vent 141 and a bottom vent 142 for communicating with the volute duct of the upper centrifugal fan 120 and the volute of the lower centrifugal fan 130, and the front wall is provided with channels Air outlet. The casing air outlet may include an upper air outlet 111, a middle air outlet 112, and a lower air outlet 113, which are opened on the front side wall of the casing 110 in order from top to bottom. The fan air outlets, channel air outlets of the upper centrifugal fan 120, and The fan air outlets of the lower centrifugal fan 130 can be set corresponding to the upper air outlet 111, the middle air outlet 112, and the lower air outlet 113, respectively. The blown airflow can flow to the indoor environment through the upper air outlet 111, the middle air outlet 112, and the lower air outlet 113, respectively. In the present invention, the middle air outlet 112 may be composed of a first air outlet and a second air outlet that are respectively opened at two lateral ends of the front side wall of the cabinet 110 to avoid the central air outlet 112 from being too concentrated, Straight into the human body.

In the present invention, two upper and lower centrifugal fans are provided in the casing 110, and a wind guide channel 140 is provided on the front wall to provide a channel air outlet and communicates with the volute duct of the upper centrifugal fan 120 and the lower centrifugal fan 130. The fan outlets of the centrifugal fan 120, the channel outlets, and the fan outlets of the lower centrifugal fan 130 are configured to send air to the upper air outlet 111, the middle air outlet 112, and the lower air outlet 113, respectively, so that the cabinet-type air conditioner indoor unit of the present invention 100 can realize air supply to part of the air outlets of the housing 110 or air to three air outlets of the housing 110 at the same time only through the impellers of the two centrifugal fans, and has high flexibility.

In some embodiments, the cabinet-type air conditioner indoor unit 100 may further include an upper air guide plate, a middle air guide plate, and a lower air guide plate for opening and closing the upper air outlet 111, the middle air outlet 112, and the lower air outlet 113, respectively. The user can select the air outlet height of the cabinet air conditioner indoor unit 100 by controlling the opening and closing of the air deflector to correspond to the air outlet. For example, the upper air outlet 111 and the lower air outlet 113 are closed and the middle air outlet 112 is opened, and the impellers of the upper centrifugal fan 120 and / or the lower centrifugal fan 130 may blow air to the middle air outlet 112. For example, the upper air outlet 111, the middle air outlet 112, and the lower air outlet 113 are all opened, and the impellers of the upper centrifugal fan 120 and / or the lower centrifugal fan 130 may be simultaneously the upper air outlet 111, the middle air outlet 112, and the lower air outlet 113. Blow air.

In other preferred embodiments, the cabinet-type air-conditioning indoor unit 100 may further include an upper adjusting plate 150 and a lower adjusting plate 160. The upper adjusting plate 150 may be configured to be rotatable between an open position where the top vent 141 is opened and a fan outlet of the upper centrifugal fan 120 is closed and a closed position where the top vent 141 is closed. The lower regulating plate 160 may be configured to be rotatable between an open position where the bottom vent 142 is opened and a fan outlet of the lower centrifugal fan 130 is closed and a closed position where the bottom vent 142 is closed. That is, the upper adjusting plate 150 may have a first open position and a first closed position, and may be rotated between these two positions. When the upper regulating plate 150 is located in the first open position, the upper regulating plate 150 opens the top ventilation opening 141 and closes the fan outlet of the upper centrifugal fan 120. When the upper adjustment plate 150 is in the first closed position, the upper adjustment plate 150 closes the top ventilation opening 141. Accordingly, the lower adjusting plate 160 may have a second open position and a second closed position, and may be rotated between these two positions. When the lower regulating plate 160 is located in the second open position, the lower regulating plate 160 opens the bottom vent 142 and closes the fan outlet of the lower centrifugal fan 130. When the lower regulating plate 160 is in the second closed position, the lower regulating plate 160 closes the bottom vent 142. According to the present invention, the upper air vent 141 and the bottom air vent 142 of the air guide channel 140 are respectively provided with an upper adjusting plate 150 and a lower adjusting plate 160 which can be opened and closed corresponding to the vents, so that the cabinet type air conditioner indoor unit 100 of the present invention can According to the needs of the user, the air outlet ratio of the upper air outlet 111, the middle air outlet 112, and the lower air outlet 113 is adjusted, thereby achieving diversification of the air supply mode and improving the user experience. The air supply mode of the cabinet-type air-conditioning indoor unit 100 of the present invention will be described in detail below.

The working modes of the cabinet-type air-conditioning indoor unit 100 may include a normal working mode, an energy-saving working mode, a strong working mode, and a custom mode. Specifically, referring to FIG. 2, in the normal working mode, the upper regulating plate 150 and the lower regulating plate 160 can be rotated to their closed positions, respectively, and the impellers of the upper centrifugal fan 120 and the lower centrifugal fan 130 can work synchronously to promote the gas respectively. The upper air outlet 111 and the lower air outlet 113 flow, so that the indoor area corresponding to the upper air outlet 111 and the lower air outlet 113 can be quickly heated or cooled. The energy-saving working mode can be specifically divided into an energy-saving heating mode and an energy-saving cooling mode. In the energy-saving heating mode, the lower regulating plate 160 can be rotated to its closed position, and the impeller of the lower centrifugal fan 130 can be operated, so that the gas flows to the lower air outlet 113. In the energy-saving cooling mode, the upper regulating plate 150 is rotated to its closed position, and the impeller of the upper centrifugal fan 120 is caused to move gas to the upper air outlet 111. The characteristics of hot air floating and cold air sinking make the indoor temperature Evenly, while saving energy consumption, the cabinet-type air conditioner indoor unit 100 has higher cooling and heating efficiency, and improves user comfort.

The powerful operation mode may specifically include a powerful heating mode and a powerful cooling mode. 3 is a schematic cross-sectional view of the cabinet-type air-conditioning indoor unit 100 shown in FIG. 1 when the upper adjustment plate 150 is in an open position and the lower adjustment plate 160 is in a closed position. Referring to FIG. 3, in the powerful heating mode, the upper regulating plate 150 can be rotated to its open position, and the lower regulating plate 160 can be moved to its closed position, and the impellers of the upper centrifugal fan 120 and the lower centrifugal fan 130 work synchronously to promote gas Flowing to the central air outlet 112 and the lower air outlet 113 respectively, while making the temperature of the indoor environment fast and uniform, the central air outlet 112 enables users to quickly sense the heat. FIG. 4 is a schematic cross-sectional view of the cabinet-type air-conditioning indoor unit 100 shown in FIG. 1 when the upper adjustment plate 150 is in a closed position and the lower adjustment plate 160 is in an open position. Referring to FIG. 4, in the powerful cooling mode, the upper regulating plate 150 can be rotated to its closed position, and the lower regulating plate 160 can be moved to its open position, and the impellers of the upper centrifugal fan 120 and the lower centrifugal fan 130 can work synchronously to separate the gases. The upper air outlet 111 and the middle air outlet 112 flow, and while the temperature of the indoor environment is quickly and uniformly, the user can quickly sense the amount of cold through the middle air outlet 112.

5 is a schematic cross-sectional view of the cabinet-type air-conditioning indoor unit 100 shown in FIG. 1 when the upper adjustment plate 150 and the lower adjustment plate 160 are both in an open position. Referring to FIG. 5, in the comfortable air supply mode, the upper regulating plate 150 and the lower regulating plate 160 can be rotated to their open positions, respectively, and the impellers of the upper centrifugal fan 120 and the lower centrifugal fan 130 can work synchronously to promote the gas to the middle air outlet. 112 flow, by making the air blown by the impeller of the upper centrifugal fan 120 and the air blown by the impeller of the lower centrifugal fan 130 convectively mixed at the rear side of the middle air outlet 112, the temperature of the air flow to the middle air outlet 112 is increased uniformly Performance, improve the air supply range of the central air outlet 112, make the temperature of the indoor environment fast and uniform, improve cooling and heating efficiency and improve comfort.

In the custom mode, the upper adjusting plate 150 and the lower adjusting plate 160 are set to be able to be rotated to their closed positions or an intermediate position between their open and closed positions, respectively. The upper centrifugal fan The impellers of 120 and the lower centrifugal fan 130 work synchronously. Not only the three outlets of the upper, middle and lower air supply air at the same time, the air supply range is large, but the air volume ratio of the three air outlets can be changed according to the real-time needs of the user. Has a better user experience.

6 to 8 show three embodiments in the custom mode. Specifically, FIG. 6 is a schematic cross-sectional view of the cabinet type air conditioner indoor unit 100 shown in FIG. 1 when the upper adjustment plate 150 is in a closed position and the lower adjustment plate 160 is in an intermediate position. Referring to FIG. 6, in the illustrated embodiment, the upper regulating plate 150 is moved to its closed position, the lower regulating plate 160 is moved to its intermediate position, and the impeller of the upper centrifugal fan 120 causes gas to flow to the upper air outlet 111 and the lower centrifugal fan 130 The impeller causes the gas to flow to the central air outlet 112 and the lower air outlet 113, wherein the air volume of the upper air outlet 111 is greater than the air volume of the central air outlet 112 or the lower air outlet 113.

FIG. 7 is a schematic cross-sectional view of the cabinet-type air-conditioning indoor unit 100 shown in FIG. 1 when the upper adjustment plate 150 is in a middle position and the lower adjustment plate 160 is in an open position. Referring to FIG. 7, in the illustrated embodiment, the upper regulating plate 150 moves to its intermediate position, the lower regulating plate 160 moves to its closed position, and the impeller of the upper centrifugal fan 120 causes gas to flow to the upper air outlet 111 and the middle air outlet 112. The impeller of the lower centrifugal fan 130 causes the gas to flow to the lower air outlet 113, wherein the air volume of the lower air outlet 113 is greater than the air volume of the upper air outlet 111 or the middle air outlet 112.

FIG. 8 is a schematic cross-sectional view of the cabinet-type air-conditioning indoor unit 100 shown in FIG. 1 when the upper adjustment plate 150 and the lower adjustment plate 160 are both in an intermediate position. Referring to FIG. 8, in the illustrated embodiment, the upper regulating plate 150 and the lower regulating plate 160 are respectively moved to their intermediate positions. The upper centrifugal fan 120 causes the gas to flow to the upper air outlet 111 and the middle air outlet 112, and the lower centrifugal fan 130 causes The gas flows to the lower air outlet 113 and the middle air outlet 112. While the upper, middle, and lower three air outlets supply air at the same time, the temperature of the air flow blown from the middle air outlet 112 is more uniform. In this embodiment, the upper regulating plate 150 and the lower regulating plate 160 are preferably configured so that the amount of air blown by the impeller of the upper centrifugal fan 120 into the wind guide channel 140 is equal to the amount of air blown by the impeller of the lower centrifugal fan 130.

In the present invention, the upper regulating plate 150 and the lower regulating plate 160 may be provided to be rotatably connected to the volute ducts of the upper centrifugal fan 120 and the lower centrifugal fan 130, respectively, and driven by the two driving motors in the open position and the closed position, respectively. Turn between. In some preferred embodiments of the present invention, the thickness of the upper adjusting plate 150 and the lower adjusting plate 160 may be set to gradually decrease from its connecting end (the end rotatably connected to the volute of the centrifugal fan) to its free end. Not only can it facilitate the gas shunting when it is in the middle position, reduce the wind resistance, increase the gas flow rate, but also optimize the board profile, and make the gas flow more smoothly along its surface.

The inner wall of the air guide channel 140 may be configured to be smoothly transitionally connected with the volute of the upper centrifugal fan 120 and the volute of the lower centrifugal fan 130. The upper surface of the upper regulating plate 150 may be set to be smoothly transitionally connected to the inner wall of the air guide channel 140 and the inner wall of the volute duct of the upper centrifugal fan 120 when it is in the open position and the closed position, respectively. The surface of the lower regulating plate 160 can be set to be smoothly transitionally connected to the inner wall of the air guide channel 140 and the inner wall of the volute duct of the lower centrifugal fan 130 when it is in the open position and the closed position, respectively, to reduce wind resistance and make the gas The flow in the volute duct and the air guide channel 140 of the upper centrifugal fan 120 and the lower centrifugal fan 130 is smoother.

At this point, those skilled in the art should realize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, the present invention can still be disclosed in accordance with the present invention without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Therefore, the scope of the present invention should be understood and deemed to cover all these other variations or modifications.

Claims

A cabinet-type air conditioner indoor unit includes:

Case, with organic case air inlet and multiple case air outlets;

An upper centrifugal fan and a lower centrifugal fan, which are disposed in the casing and located at the upper and lower portions of the casing, respectively; and

The indoor heat exchanger is disposed on the air inlet flow path between the casing air inlet and the upper centrifugal fan and the lower centrifugal fan; wherein the cabinet-type air conditioner indoor unit further includes:

The top and bottom of the air guide channel are respectively provided with a top vent and a bottom vent, and a front wall is provided with a channel air outlet, and the air duct is set to be centrifuged with the upper part through the top vent and the bottom vent respectively. The volute of the fan is in communication with the volute of the lower centrifugal fan; and

The plurality of casing air outlets are an upper air outlet, a middle air outlet, and a lower air outlet, respectively. The fan air outlets of the upper centrifugal fan, the channel air outlets, and the fan air outlets of the lower centrifugal fan respectively correspond to the upper air outlet. The middle air outlet and the lower air outlet are set.
The cabinet-type air conditioner indoor unit according to claim 1, further comprising:

An upper adjusting plate configured to be rotatable between a first open position and a first closed position, wherein when it is in the first open position, the upper adjusting plate opens the top vent and closes the fan of the upper centrifugal fan An air outlet, when it is in the first closed position, the upper adjusting plate closes the top vent; and

A lower regulating plate configured to be rotatable between a second open position and a second closed position, wherein when it is in the second open position, the lower regulating plate opens the bottom vent and closes the fan of the lower centrifugal fan The air outlet, when it is in the second closed position, the lower regulating plate closes the bottom vent.
The cabinet-type air conditioner indoor unit according to claim 2, wherein:

In the normal working mode, the upper and lower regulating plates are respectively rotated to their respective closed positions; and the impellers of the upper and lower centrifugal fans are configured to work synchronously.
The cabinet-type air conditioner indoor unit according to claim 2, wherein:

In the energy-saving heating mode, the lower regulating plate is rotated to a second closed position, and the impeller of the lower centrifugal fan is operated; and / or

In the energy-saving cooling mode, the upper regulating plate is rotated to a first closed position, and an impeller of the upper centrifugal fan is operated.
The cabinet-type air conditioner indoor unit according to claim 2, wherein:

In the powerful heating mode, the upper regulating plate is rotated to a first open position, the lower regulating plate is moved to a second closed position, and the impellers of the upper centrifugal fan and the lower centrifugal fan work synchronously; and / or

In the powerful cooling mode, the upper regulating plate is rotated to a first closed position, the lower regulating plate is moved to a second open position, and the impellers of the upper centrifugal fan and the lower centrifugal fan work synchronously.
The cabinet-type air conditioner indoor unit according to claim 2, wherein:

In the comfortable air supply mode, the upper and lower adjusting plates are rotated to their respective open positions, and the impellers of the upper and lower centrifugal fans work synchronously.
The cabinet-type air conditioner indoor unit according to claim 2, wherein:

In the custom mode, the upper adjusting plate and the lower adjusting plate are respectively set to rotate to their respective closed positions or an intermediate position between their respective open and closed positions according to the adjustment instruction input by the user, And the impellers of the upper centrifugal fan and the lower centrifugal fan work synchronously.
The cabinet-type air conditioner indoor unit according to claim 1, wherein:

The middle air outlet is composed of a first air outlet and a second air outlet that are respectively opened at two lateral ends of the front side wall of the casing.
The cabinet-type air conditioner indoor unit according to claim 2, wherein:

The thicknesses of the upper regulating plate and the lower regulating plate are both set to gradually decrease from their connecting ends to their free ends.
The cabinet-type air conditioner indoor unit according to claim 2 or 9, wherein:

The air guide channel is configured to be smoothly connected to the volute of the upper centrifugal fan and the volute of the lower centrifugal fan; and / or

The surface of the upper regulating plate is configured to be smoothly transitionally connected to the inner wall of the air guide passage and the inner wall of the volute duct of the upper centrifugal fan, respectively, when it is in the first open position and the first closed position; and /or

The plate surface of the lower regulating plate is configured to be smoothly transitionally connected to the inner wall of the air guide channel and the inner wall of the volute duct of the lower centrifugal fan when it is in the second open position and the second closed position, respectively.