Air duct structure, air conditioner and air supply control method of air conditioner

Abstract

The present invention provides an air duct structure, an air conditioner and an air supply control method for the air conditioner, which belongs to the field of air conditioners. The air duct structure of the air conditioner is provided with a flow path control mechanism to control the connection state and air supply direction of two air duct components in the air duct structure, and at the same time, combined with the control of the rotation speed of the centrifugal fans in different air duct components, when the air duct structure is supplying air upward, the rotation speed of the centrifugal fan in the upper air duct component is rotated at a speed lower than the rotation speed of the centrifugal fan in the lower air duct component, so that the airflow in the lower air duct component is merged into the upper air duct component under the action of the pressure difference, thereby increasing the air supply volume of the air duct structure when supplying air upward, and similarly, when the air duct structure is supplying air downward, the rotation speed of the centrifugal fan in the upper air duct component is rotated at a speed higher than the rotation speed of the centrifugal fan in the lower air duct component, so that the airflow in the upper air duct component is merged into the lower air duct component under the action of the pressure difference, thereby increasing the air supply volume of the air duct structure when supplying air downward.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air duct structure, an air conditioner and an air supply control method of the air conditioner. Background Art

[0002] The existing upper and lower air outlet type cabinet has an air outlet mode of discharging air from the upper air outlet of the cabinet during cooling and discharging air from the lower air outlet of the cabinet during heating.

[0003] For a dual-fan upper and lower air outlet cabinet, the upper fan is used to send air out from the upper air outlet of the cabinet when the cabinet is in a cooling condition, and the lower fan is used to send air out from the lower air outlet of the fan when the cabinet is in a heating condition.

[0004] However, no matter in cooling mode or heating mode, only half of the air duct in the cabinet is working, which leads to low working efficiency and low air volume during operation of the cabinet. Summary of the invention

[0005] In order to overcome the problems of low working efficiency and low air volume in cabinet air conditioners in related technologies when operating in cooling mode or heating mode, an embodiment of the present invention proposes an air duct structure, an air conditioner and an air supply control method for the air conditioner, which controls the connectivity and air supply direction of two air duct components in the air duct structure by setting a flow path control mechanism in the air duct structure of the cabinet air conditioner, and combines the control of the rotation speed of the centrifugal fans in different air duct components. When the air duct structure supplies air upward, the rotation speed of the centrifugal fan in the upper air duct component is rotated at a speed lower than the rotation speed of the centrifugal fan in the lower air duct component, so that the airflow in the lower air duct component is merged into the upper air duct component under the action of pressure difference, thereby increasing the air supply volume of the air duct structure when supplying air upward. Similarly, when the air duct structure supplies air downward, the rotation speed of the centrifugal fan in the upper air duct component is rotated at a speed higher than the rotation speed of the centrifugal fan in the lower air duct component, so that the airflow in the upper air duct component is merged into the lower air duct component under the action of pressure difference, thereby increasing the air supply volume of the air duct structure when supplying air downward.

[0006] A first aspect of an embodiment of the present invention provides an air duct structure, characterized in that it includes an upper air duct component and a lower air duct component, the upper air duct component and the lower air duct component are adjacently arranged in the height direction of the air duct structure, and the upper air duct component and the lower air duct component both include:

[0007] An air duct housing and a centrifugal fan, wherein the air duct housing has a first housing opening formed at one end in the height direction and a second housing opening formed at the other end;

[0008] A fan installation cavity for installing a centrifugal fan is formed inside the air duct housing, a fan air inlet is formed in the axial direction of the fan installation cavity, a fan air outlet 1 is formed at one end of the fan installation cavity in the height direction of the air duct housing, and a fan air outlet 2 is formed at the other end, a first air duct is connected between the fan air outlet 1 and the first shell opening, a second air duct is connected between the fan air outlet 2 and the second shell opening, and the upper air duct component and the lower air duct component are fluidically connected through the two second shell openings;

[0009] The air duct structure also includes:

[0010] A flow path control mechanism, the flow path control mechanism is used to control the connection state of the two second shell ports and / or the connection position of the two second shell ports and / or the air supply direction of the upper air duct component and / or the air supply direction of the lower air duct component; wherein

[0011] When the upper air duct component and the lower air duct component are controlled to supply air upward, the two second shell openings are controlled to be connected, and the rotation speed of the centrifugal fan in the upper air duct component is controlled to be lower than the rotation speed of the centrifugal fan in the lower air duct component, so that the airflow in the lower air duct component is merged into the upper air duct component under the action of the pressure difference;

[0012] When the upper duct component and the lower duct component are controlled to supply air downward, the two second shell openings are controlled to be connected, and the speed of the centrifugal fan in the upper duct component is controlled to be higher than the speed of the centrifugal fan in the lower duct component, so that the airflow in the upper duct component is merged into the lower duct component under the action of the pressure difference.

[0013] In the above technical solution, the flow path control mechanism includes a first flow path control mechanism, a second flow path control mechanism and a third flow path control mechanism;

[0014] The first flow path control mechanism and the second flow path control mechanism are arranged at the communication position of the two second shell openings, and are used to control the communication state and / or communication position of the upper air duct component and the lower air duct component;

[0015] The third flow path control mechanism is disposed in the first air duct of the upper air duct component and the first air duct of the lower air duct component, and is used to control the air supply direction of the upper air duct component and the air supply direction of the lower air duct component.

[0016] In the above technical solution, the first flow path control mechanism includes a first flow path control member A and a first flow path control member B which can be controlled to be linked, and the first flow path control member A and the first flow path control member B have a first linkage position and a second linkage position when linked;

[0017] When the first flow path control member A and the first flow path control member B are in the first linkage position, the second fan air outlet in the upper air duct component includes an upper closed section A closed by the first flow path control member A and an upper open section A not closed by the first flow path control member A, and the second fan air outlet in the lower air duct component includes a lower closed section A closed by the first flow path control member B and a lower open section A not closed by the first flow path control member B, and a first intermediate connecting air duct is connected between the upper open section A and the lower open section A, wherein in the rotation direction of the centrifugal fan in the upper air duct component, the upper open section A includes an upper open section edge A1 and an upper open section edge A2 arranged along the rotation direction, and the upper open section edge A1 is located below the upper open section edge A2, and in the rotation direction of the centrifugal fan in the lower air duct component, the lower open section A includes a lower open section edge A1 and a lower open section edge A2 arranged along the rotation direction, and the lower open section edge A1 is located below the lower open section edge A2;

[0018] When the first flow path control member A and the first flow path control member B are in the second linkage position, the second fan air outlet in the upper air duct component includes an upper closed section B closed by the first flow path control member A and an upper open section B not closed by the first flow path control member A, and the second fan air outlet in the lower air duct component includes a lower closed section B closed by the first flow path control member B and a lower open section B not closed by the first flow path control member B, and a second intermediate connecting air duct is connected between the upper open section B and the lower open section B, wherein in the rotation direction of the centrifugal fan in the upper air duct component, the upper open section B includes a relative upper open section edge B1 and an upper open section edge B2, and the upper open section edge B1 is located above the upper open section edge B2, and in the rotation direction of the centrifugal fan in the lower air duct component, the lower open section B includes a relative lower open section edge B1 and a lower open section edge B2, and the lower open section edge B1 is located below the lower open section edge B2;

[0019] The rotation direction of the centrifugal fan in the upper air duct component is opposite to the rotation direction of the centrifugal fan in the lower air duct component.

[0020] In the above technical solution, the second fan outlet of the upper air duct component is an arc-shaped outlet, and the first flow path control member A includes an upper rack arranged at the second fan outlet of the upper air duct component, and the upper rack is configured to fit the arc-shaped teeth of the second fan outlet shape in the upper air duct component, and the upper rack can slide circumferentially around the preset rotation axis of the centrifugal fan in the upper air duct component;

[0021] The second fan outlet of the lower air duct component is an arc-shaped outlet, and the first flow path control member B includes a lower rack arranged at the second fan outlet of the lower air duct component, the lower rack is configured to fit the arc-shaped teeth of the second fan outlet of the lower air duct component, and the upper rack can slide circumferentially around the preset rotation axis of the centrifugal fan in the lower air duct component;

[0022] The upper rack and the lower rack of the arc structure are arranged opposite to each other and spaced apart in the height direction of the air duct structure, and the convex surfaces of the upper rack and the lower rack of the arc structure are opposite to each other and the concave surfaces are facing the corresponding air duct component of the centrifugal fan, wherein the concave surface side of the upper rack and the lower rack facing the corresponding air duct component constitutes at least a part of the air duct profile of the corresponding air duct component;

[0023] The first flow path control mechanism also includes a gear rotatably arranged between the upper rack and the lower rack, the gear is meshed with both the upper rack and the lower rack, and the gear can be driven to rotate;

[0024] When the gear is driven to rotate, the upper rack and the lower rack can slide circumferentially around their respective rotation axes in a linked manner, so that when the upper rack and the lower rack are in a first linked position, the upper air duct component and the lower air duct component can be connected through the first intermediate connecting air duct, and when the upper rack and the lower rack are in a second linked position, the upper air duct component and the lower air duct component can be connected through the second intermediate connecting air duct.

[0025] In the above technical solution, when the upper rack and the lower rack are in the first linkage position, a first intermediate connecting air duct is formed between the upper rack and the lower rack, and the first intermediate connecting air duct includes a first intermediate connecting air duct section A, a first intermediate connecting air duct section B and a first intermediate connecting air duct section C which are connected in sequence, wherein the first intermediate connecting air duct section A is connected to the lower opening section A and gradually extends from the lower opening section A side to the first intermediate connecting air duct section B side, and the first intermediate connecting air duct section C is connected to the upper opening section A and gradually extends from the upper opening section A side to the first intermediate connecting air duct section B side;

[0026] When the upper rack and the lower rack are in the second linkage position, a second intermediate connecting air duct is formed between the upper rack and the lower rack, and the second intermediate connecting air duct includes a second intermediate connecting air duct section A, a second intermediate connecting air duct section B and a second intermediate connecting air duct section C which are connected in sequence, wherein the second intermediate connecting air duct section A is connected to the upper opening section B and gradually extends from the upper opening section B side to the second intermediate connecting air duct section B side, and the second intermediate connecting air duct section C is connected to the lower opening section B and gradually extends from the lower opening section B side to the second intermediate connecting air duct section B side.

[0027] In the above technical solution, the second flow path control mechanism includes a first stopper movably arranged at the position of the upper opening section A and a second stopper movably arranged at the position of the lower opening section A;

[0028] The first stopper is used to open or close the upper opening section A, and the second stopper is used to open or close the lower opening section A. The first stopper and the second stopper can control the connection state and / or connection position of the upper air duct component and the lower air duct component in combination with the movement of the first flow path control mechanism.

[0029] In the above technical solution, the third flow path control mechanism is used to open or close the first air duct;

[0030] When the first flow path control mechanism is in the first linkage position, the third flow path control mechanism in the upper air duct component opens the first air duct in the upper air duct component, and the third flow path control mechanism in the lower air duct component closes the first air duct in the lower air duct component, so that the upper air duct component and the lower air duct component supply air upward;

[0031] When the first flow path control mechanism is in the second linkage position, the third flow path control mechanism in the upper air duct component closes the first air duct in the upper air duct component, and the third flow path control mechanism in the lower air duct component opens the first air duct in the lower air duct component, so that the upper air duct component and the lower air duct component supply air downward.

[0032] In the above technical solution, a return air port is provided on the air duct wall of the first air duct, one end of the return air port is connected to the first air duct, and the other end is connected to the external environment of the air duct structure;

[0033] The third flow path control mechanism can close the return air outlet while opening the first air duct, and the third flow path control mechanism can open the return air outlet while closing the first air duct.

[0034] A second aspect of an embodiment of the present invention provides an air conditioner, comprising:

[0035] A casing, wherein an upper air outlet is provided at the upper part of the casing, a lower air outlet is provided at the lower part of the casing, and the interior of the casing is provided with the above-mentioned air duct structure;

[0036] The first air duct of the upper air duct component in the air duct structure is connected to the upper air outlet, and the first air duct of the lower air duct component is connected to the lower air outlet.

[0037] In the above technical solution, a fuselage shell channel is defined between the casing and the air duct structure;

[0038] A heat exchange component is provided in the fuselage shell channel, and a heat exchange surface of the heat exchange component is opposite to the axial air inlet of the centrifugal fan;

[0039] An upper auxiliary air inlet is also provided at the upper part of the casing, and a lower auxiliary air inlet is also provided at the lower part of the casing. Both the upper auxiliary air inlet and the lower auxiliary air inlet are communicated with the fuselage shell channel.

[0040] In the above technical solution, the air conditioner further comprises:

[0041] An upper air outlet frame and a lower air outlet frame, the upper air outlet frame forms an upper air outlet duct, the lower air outlet frame forms a lower air outlet duct, one end of the upper air outlet duct is connected to the first shell opening of the upper air duct component, and the other end is connected to the upper air outlet, one end of the lower air outlet duct is connected to the first shell opening of the lower air duct component, and the other end is connected to the lower air outlet;

[0042] The air conditioner also includes:

[0043] A front panel and air intake components forming the housing; and

[0044] A top cover is arranged on the top of the upper air outlet frame and a bottom plate is arranged on the bottom of the lower air outlet frame.

[0045] A third aspect of an embodiment of the present invention provides an air supply control method for an air conditioner, the control method being applied to the above-mentioned air conditioner, the air conditioner having a single upper air outlet cooling mode with air inlet at the lower air outlet and air outlet at the upper air outlet, and the air conditioner also having a single lower air outlet heating mode with air inlet at the upper air outlet and air outlet at the lower air outlet, the control method comprising:

[0046] When the air conditioner performs a single upper air outlet cooling mode, the upper air duct component and the lower air duct component are connected by controlling the flow path control mechanism, and the upper air duct component and the lower air duct component are both supplied with air upward, and the rotation speed of the centrifugal fan in the upper air duct component is controlled to be lower than the rotation speed of the centrifugal fan in the lower air duct component, so that the airflow in the lower air duct component is merged into the upper air duct component under the action of the pressure difference;

[0047] When the air conditioner executes the single downward air outlet cooling mode, the upper air duct component and the lower air duct component are connected by controlling the flow path control mechanism, and both the upper air duct component and the lower air duct component supply air downward, and the speed of the centrifugal fan in the upper air duct component is controlled to be lower than the speed of the centrifugal fan in the lower air duct component, so that the airflow in the upper air duct component is merged into the lower air duct component under the action of the pressure difference.

[0048] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0049] In the embodiment of the present invention, a flow path control mechanism is provided in the duct structure of the cabinet air conditioner to control the connectivity and air supply direction of the two duct components in the duct structure, and at the same time combined with the control of the rotational speeds of the centrifugal fans in different duct components, when the duct structure is supplying air upward, the rotational speed of the centrifugal fan in the upper duct component is rotated at a speed lower than the rotational speed of the centrifugal fan in the lower duct component, so that the airflow in the lower duct component is merged into the upper duct component under the action of the pressure difference, thereby increasing the air supply volume of the duct structure when supplying air upward. Similarly, when the duct structure is supplying air downward, the rotational speed of the centrifugal fan in the upper duct component is rotated at a speed higher than the rotational speed of the centrifugal fan in the lower duct component, so that the airflow in the upper duct component is merged into the lower duct component under the action of the pressure difference, thereby increasing the air supply volume of the duct structure when supplying air downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0051] Figure 1A schematic diagram of a three-dimensional structure of an embodiment of an air duct structure of the present invention;

[0052] Figure 2 The cross-sectional structure of the air duct structure embodiment of the present invention is shown in FIG. Figure 1 , the air duct structure in the figure hides the first flow path control mechanism and the second flow path control mechanism;

[0053] Figure 3 It is a structural schematic diagram of the first flow path control mechanism in the embodiment of the air duct structure of the present invention;

[0054] Figure 4 The cross-sectional structure of the air duct structure embodiment of the present invention is shown in FIG. Figure 2 ,The air duct structure in the figure supplies air upward;

[0055] Figure 5 The cross-sectional structure of the air duct structure embodiment of the present invention is shown in FIG. Figure 3 ,The air duct structure in the figure supplies air downward;

[0056] Figure 6 It is a schematic diagram of the exploded structure of the air conditioner in the embodiment of the air conditioner of the present invention;

[0057] Figure 7 It is a schematic diagram of the overall structure of an air conditioner in an embodiment of the air conditioner of the present invention;

[0058] Figure 8 It is a schematic cross-sectional structural diagram of the air conditioner in the embodiment of the air conditioner of the present invention when the air is supplied from top to bottom simultaneously;

[0059] Fig. 9 It is a cross-sectional structural schematic diagram of the air conditioner in the embodiment of the air conditioner of the present invention when the air is supplied from one side;

[0060] Fig.10 It is a schematic cross-sectional structural diagram of the air conditioner in the embodiment of the air conditioner of the present invention when the air is supplied from the bottom only.

[0061] in:

[0062] 1a-upper air duct component; 1b-lower air duct component;

[0063] 10-air duct housing; 11-first air duct; 110-return air outlet; 12-second air duct; 101-first housing opening; 102-second housing opening;

[0064] 20- centrifugal fan; 201- fan outlet 1; 202- fan outlet 2; 2021- upper opening section A; 2022- lower opening section A; 2023- upper opening section B; 2024- lower opening section B;

[0065] 30-first flow path control mechanism; 301-first flow path control member A; 302-first flow path control member B; 303-gear;

[0066] 40-first intermediate connecting ventilation duct; 401-first intermediate connecting ventilation duct section A; 402-first intermediate connecting ventilation duct section B; 403-first intermediate connecting ventilation duct section C;

[0067] 50-second intermediate connecting ventilation duct; 501-second intermediate connecting ventilation duct section A; 502-second intermediate connecting ventilation duct section B; 503-second intermediate connecting ventilation duct section C;

[0068] 60-third flow path control mechanism;

[0069] 70- first stopper;

[0070] 80- second stopper;

[0071] 2-housing; 2a-front panel; 2b-air inlet component; 2c-top cover; 2d-chassis; 21-upper air inlet; 22-lower air inlet; 23-upper auxiliary air inlet; 24-lower auxiliary air inlet;

[0072] 3-Upper air outlet frame;

[0073] 4-Lower air outlet frame;

[0074] 5-Heat exchange components. DETAILED DESCRIPTION

[0075] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0076] At present, existing cabinet air conditioners have problems of low working efficiency and low air volume when operating in cooling mode or heating mode. The embodiment of the present invention proposes an air duct structure, an air conditioner and an air supply control method for the air conditioner, which controls the connection state and air supply direction of two air duct components in the air duct structure by setting a flow path control mechanism in the air duct structure of the cabinet air conditioner, and at the same time combines the control of the rotation speed of the centrifugal fan in different air duct components. When the air duct structure is supplying air upward, the rotation speed of the centrifugal fan in the upper air duct component is rotated at a speed lower than the rotation speed of the centrifugal fan in the lower air duct component, so that the airflow in the lower air duct component is merged into the upper air duct component under the action of pressure difference, thereby increasing the air supply volume of the air duct structure when supplying air upward. Similarly, when the air duct structure is supplying air downward, the rotation speed of the centrifugal fan in the upper air duct component is rotated at a speed higher than the rotation speed of the centrifugal fan in the lower air duct component, so that the airflow in the upper air duct component is merged into the lower air duct component under the action of pressure difference, thereby increasing the air supply volume of the air duct structure when supplying air downward.

[0077] The following is combined with Figure 1 -Attached Fig.10 The technical solution of this embodiment is elaborated in detail. In the absence of conflict, the following implementation methods and embodiments can be combined with each other.

[0078] Example

[0079] like Figure 1-Figure 5 As shown, the first aspect of the embodiment of the present application proposes an air duct structure, including an upper air duct component 1a and a lower air duct component 1b, wherein the upper air duct component 1a and the lower air duct component 1b are adjacently arranged in the height direction of the air duct structure. Figure 2 The height direction of the duct structure is shown in FIG. 1 , and both the upper duct component 1a and the lower duct component 1b include:

[0080] like Figure 2 , Figure 4 and Figure 5 The air duct housing 10 and the centrifugal fan 20 shown in the figure have a first housing opening 101 formed at one end of the air duct housing 10 in the height direction and a second housing opening 102 formed at the other end; Figure 2 , Figure 4 and Figure 5 As shown, the height direction of the upper duct component 1a and the lower duct component 1b is the same as the height direction of the duct structure, that is, the upper end of the upper duct component 1a is formed with a first shell opening 101 opening upward, and the lower end of the lower duct component 1b is formed with a first shell opening 101 opening downward;

[0081] A fan installation cavity for installing the centrifugal fan 20 is formed inside the air duct housing 10, and the figure number is not marked in the figure. A fan air inlet is formed axially of the fan installation cavity, and the fan air inlet is opposite to the axial air inlet of the centrifugal fan 20. Preferably, fan air inlets are formed on both axial sides of the fan installation cavity, and axial air inlets are formed on both axial sides of the centrifugal fan, wherein each axial air inlet of the centrifugal fan corresponds to an axial air inlet of the fan installation cavity, that is, preferably, the centrifugal fan in the embodiment of the present invention is a double-suction fan that can inlet air on both axial sides;

[0082] like Figure 2 As shown, a fan outlet 1 201 is formed at one end of the fan installation cavity in the height direction of the air duct housing 10, and a fan outlet 2 202 is formed at the other end, wherein the first air duct 11 is connected between the fan outlet 1 201 and the first housing opening 101, the second air duct 12 is connected between the fan outlet 202 and the second housing opening 102, and the upper air duct component 1a and the lower air duct component 1b are fluidically connected through the two second housing openings 102;

[0083] The air duct structure also includes:

[0084] A flow path control mechanism, the flow path control mechanism is used to control the connection state of the two second shell openings 102 of the two air duct components {upper air duct component 1a and lower air duct component 1b} and / or the connection position of the two second shell openings 102 and / or the air supply direction of the upper air duct component 1a and / or the air supply direction of the lower air duct component 1b, that is, the flow path control mechanism in the embodiment of the present invention can control the connection of the two air duct components while also enabling the two air duct components to supply air in the same direction, thereby increasing the air supply volume of the air duct structure when supplying air in a certain direction; wherein

[0085] When the upper duct component 1a and the lower duct component 1b are controlled to supply air upward, the two second shell openings 102 are controlled to be connected, and the rotation speed of the centrifugal fan 20 in the upper duct component 1a is controlled to be lower than the rotation speed of the centrifugal fan 20 in the lower duct component 1b, so that the airflow in the lower duct component 1b is merged into the upper duct component 1a under the action of the pressure difference, that is, when both duct components are controlled to supply air upward, by making the rotation speed of the centrifugal fan in the lower duct component 1b higher than the rotation speed of the centrifugal fan in the upper duct component 1a, the air pressure in the lower duct component 1b can be made higher than the air pressure in the upper duct component 1a, that is, a pressure difference occurs at the connection position between the upper duct component 1a and the lower duct component 1b, so that the airflow in the lower duct component 1b can be merged into the upper duct component 1a under the action of the pressure difference, thereby increasing the overall air supply volume of the duct structure when supplying air upward;

[0086] When the upper duct component 1a and the lower duct component 1b are controlled to supply air downward, the two second shell openings 102 are controlled to be connected, and the rotation speed of the centrifugal fan 20 in the upper duct component 1a is controlled to be higher than the rotation speed of the centrifugal fan in the lower duct component 1b, so that the airflow in the upper duct component 1a is merged into the lower duct component 1b under the action of the pressure difference, that is, when both duct components are controlled to supply air downward, by making the rotation speed of the centrifugal fan in the lower duct component 1b lower than the rotation speed of the centrifugal fan in the upper duct component 1a, the air pressure in the lower duct component 1b can be made lower than the air pressure in the upper duct component 1a, that is, a pressure difference occurs at the connecting position of the upper duct component 1a and the lower duct component 1b, so that the airflow in the upper duct component 1a can be merged into the lower duct component 1b under the action of the pressure difference, thereby increasing the overall air supply volume of the duct structure when supplying air downward.

[0087] That is, in the embodiment of the present invention, a flow path control mechanism is provided in the duct structure of the cabinet air conditioner to control the connectivity and air supply direction of the two duct components {upper duct component 1a and lower duct component 1b} in the duct structure, and at the same time, combined with the control of the rotation speed of the centrifugal fan 20 in different duct components {upper duct component 1a and lower duct component 1b}, when the duct structure is supplying air upward, the rotation speed of the centrifugal fan 20 in the upper duct component 1a is rotated at a speed lower than the rotation speed of the centrifugal fan 20 in the lower duct component 1b, so that the airflow in the lower duct component 1b is merged into the upper duct component 1a under the action of the pressure difference, thereby increasing the air supply volume of the duct structure when supplying air upward. Similarly, when the duct structure is supplying air downward, the rotation speed of the centrifugal fan 20 in the upper duct component 1a is rotated at a speed higher than the rotation speed of the centrifugal fan 20 in the lower duct component 1b, so that the airflow in the upper duct component 1a is merged into the lower duct component 1b under the action of the pressure difference, thereby increasing the air supply volume of the duct structure when supplying air downward.

[0088] It is worth noting that, preferably, the above-mentioned air duct structure is used in a cabinet air conditioner with up and down air supply function, but in some alternative embodiments, the above-mentioned air duct structure can also be used in other types of air conditioners. Technical personnel in this field can apply the above-mentioned air duct structure to different types of air conditioners according to actual conditions.

[0089] In some embodiments of the present application, the above-mentioned flow path control mechanism includes a first flow path control mechanism 30, a second flow path control mechanism and a third flow path control mechanism;

[0090] The first flow path control mechanism 30 and the second flow path control mechanism are arranged at the communication position of the two second shell openings 102, and are used to control the communication state and / or communication position of the upper air duct component 1a and the lower air duct component 1b;

[0091] The third flow path control mechanism is disposed in the first air duct 11 of the upper air duct component 1a and the first air duct 11 of the lower air duct component 1b, and is used to control the air supply direction of the upper air duct component 1a and the air supply direction of the lower air duct component 1b.

[0092] That is, the first flow path control mechanism 30 and the second flow path control mechanism can realize the connection state of the two air duct components {upper air duct component 1a and lower air duct component 1b}, and it can also be realized that when the two air duct components {upper air duct component 1a and lower air duct component 1b} are in the connection state, the two air duct components can be controlled to be connected at different positions, so that the control of the air supply direction of different air duct components by the third flow path control mechanism can be combined to realize the optimal air supply effect of the air duct structure.

[0093] In some embodiments of the present application, Figure 2-Figure 5 As shown, the first flow path control mechanism 30 includes a first flow path control member A301 and a first flow path control member B302 which can be controlled to be linked, and the first flow path control member A301 and the first flow path control member B302 have a first linkage position and a second linkage position when linked;

[0094] like Figure 4As shown, when the first flow path control member A301 and the first flow path control member B302 are in the first linkage position, the second fan outlet 202 in the upper air duct component 1a includes an upper closed section A closed by the first flow path control member A301 and an upper open section A2021 not closed by the first flow path control member A301, and the second fan outlet 202 in the lower air duct component 1b includes a lower closed section A closed by the first flow path control member B302 and an upper open section A2021 not closed by the first flow path control member B302. The lower opening section A2022, the upper opening section A2021 and the lower opening section A2022 are connected by a first intermediate connecting air duct 40, that is, the upper air duct component 1a and the lower air duct component 1b are connected by the first intermediate connecting air duct 40, wherein in the rotation direction of the centrifugal fan 20 in the upper air duct component 1a, the upper opening section A2021 includes an upper opening section edge A1 and an upper opening section edge A2 arranged along the rotation direction, and the upper opening section edge A1 is located at the upper opening section edge A 2, in the rotation direction of the centrifugal fan 20 in the lower air duct component 1b, the lower opening section A includes a lower opening section edge A1 and a lower opening section edge A2 arranged along the rotation direction, and the lower opening section edge A1 is located below the lower opening section edge A2. The advantage of this is that when the air duct structure is supplying air upward, the airflow generated by the centrifugal fan 20 in the lower air duct component 1b can move along the rotation direction of the centrifugal fan 20 in the lower air duct component 1b when passing through the lower opening section A2022, so that more air volume can enter the first intermediate connecting air duct 40 per unit time, and at the same time, the airflow entering the first intermediate connecting air duct 40 can also move along the rotation direction of the centrifugal fan 20 in the upper air duct component 1a when entering the upper air duct component 1a through the upper opening section A2021, thereby avoiding a large loss of the airflow in the lower air duct component 1b when entering the upper air duct component 1a, thereby improving the overall air supply volume of the air duct structure when supplying air upward;

[0095] like Figure 5As shown, when the first flow path control member A301 and the first flow path control member B302 are in the second linkage position, the second fan outlet 202 in the upper air duct component 1a includes an upper closed section B closed by the first flow path control member A301 and an upper open section B2023 not closed by the first flow path control member A301, and the second fan outlet 202 in the lower air duct component 1b includes a lower closed section B closed by the first flow path control member B302 and an upper open section B2023 not closed by the first flow path control member B302. The lower opening section B2024 is closed, and a second intermediate connecting air duct 50 is connected between the upper opening section B2023 and the lower opening section B2024, that is, the upper air duct component 1a and the lower air duct component 1b are connected through the second intermediate connecting air duct 50, wherein in the rotation direction of the centrifugal fan 20 in the upper air duct component 1a, the upper opening section B2023 includes an upper opening section edge B1 and an upper opening section edge B2 relative to each other, and the upper opening section edge B1 is located at the upper opening section edge B2. At the top, in the rotation direction of the centrifugal fan 20 in the lower air duct component 1b, the lower opening section B2024 includes a lower opening section edge B1 and a lower opening section edge B2 relative to each other, and the lower opening section edge B1 is located below the lower opening section edge B2; the advantage of this is that when the air duct structure only supplies air downward, the airflow generated by the centrifugal fan 20 in the upper air duct component 1a can move along the rotation direction of the centrifugal fan 20 in the upper air duct component 1a when passing through the upper opening section B2023, so that more air volume can enter the second intermediate connecting air duct 50 per unit time, and at the same time, the airflow entering the second intermediate connecting air duct 50 can also move along the rotation direction of the centrifugal fan 20 in the lower air duct component 1b when entering the lower air duct component 1b through the lower opening section B2024, thereby avoiding a large loss of the airflow in the upper air duct component 1a when entering the lower air duct component 1b, thereby improving the overall air supply volume of the air duct structure when supplying air downward;

[0096] It is worth noting that the rotation direction of the centrifugal fan 20 in the upper air duct component 1a is opposite to the rotation direction of the centrifugal fan 20 in the lower air duct component 1b. Figure 3 As shown, in Figure 3 In the example, the rotation direction of the centrifugal fan 20 in the upper air duct component 1a is counterclockwise, and the rotation direction of the centrifugal fan 20 in the lower air duct component 1b is clockwise. Of course, in some alternative embodiments, by reasonably setting the flow path control mechanism, the rotation direction of the upper air duct component 1a can also be clockwise, and conversely, the rotation direction of the lower air duct component 1b can also be counterclockwise.

[0097] In some embodiments of the present application, in order to reduce the noise of the air duct structure when only upward air is supplied or only downward air is supplied, such as Figure 2 , Figure 4 and Figure 5As shown, the second fan outlet 202 of the upper air duct component 1a can be an arc-shaped outlet, and the first flow path control member A301 is set as an upper rack installed at the position of the second fan outlet 202 of the upper air duct component 1a, and the upper rack is constructed to fit the arc-shaped teeth of the second fan outlet 202 in the upper air duct component 1a, and the upper rack can slide circumferentially around the preset rotation axis of the centrifugal fan 20 in the upper air duct component 1a;

[0098] At the same time, the second fan outlet 202 of the lower air duct component 1b is also set to an arc-shaped outlet, and the first flow path control component B302 is set to be a lower rack installed at the second fan outlet position of the lower air duct component 1b, and the lower rack is also constructed to adapt to the arc-shaped teeth of the second fan outlet 202 in the lower air duct component 1b, and the upper rack can also slide circumferentially around the preset rotation axis of the centrifugal fan in the lower air duct component 1b;

[0099] like Figure 3-Figure 5 As shown, the upper rack and the lower rack of the arc structure are arranged opposite to each other and spaced apart in the height direction of the air duct structure, and the convex surfaces of the upper rack and the lower rack of the arc structure are opposite to each other, and the concave surfaces face the centrifugal fan 20 of the corresponding air duct component, that is, the concave surface of the upper rack faces the centrifugal fan 20 of the upper air duct component 1a, and the concave surface of the lower rack faces the centrifugal fan of the lower air duct component 1b, wherein the concave surface side of the upper rack and the lower rack facing the corresponding air duct component constitutes at least part of the air duct profile of the corresponding air duct component; that is, by configuring the upper rack and the lower rack into an arc shape and adapting to the corresponding air duct component, the upper rack and the lower rack are arranged in an arc shape and adapted to the corresponding air duct component. The corresponding fan outlet 202 is installed. On the one hand, different intermediate connecting air ducts {a first intermediate connecting air duct 40 and a second intermediate connecting air duct 50} connecting the upper air duct component 1a and the lower air duct component 1b can be formed through the linkage of the upper rack and the lower rack. On the other hand, the upper rack and the lower rack can also serve as at least part of the air duct profile of the corresponding air duct component while ensuring the connection between the upper air duct component 1a and the lower air duct component 1b, thereby reducing the resistance of the airflow during flow, reducing the aerodynamic noise on the one hand, and avoiding the loss of air volume on the other hand.

[0100] like Figure 2 , Figure 4 and Figure 5 As shown, the first flow path control mechanism 30 also includes a gear 303 rotatably arranged between the upper rack and the lower rack, the gear 303 is meshed with both the upper rack and the lower rack, and the gear 303 can be driven to rotate; that is, the rotation of one gear 303 can simultaneously drive the upper rack and the lower rack to move, thereby realizing the linkage effect of the upper rack and the lower rack, and at the same time, by controlling the forward and reverse rotation of the gear 303, the upper air duct component 1a and the lower air duct component 1b can be connected through different intermediate air ducts {the first intermediate connecting air duct 40 and the second intermediate connecting air duct 50}.

[0101] like Figure 4 and Figure 5 As shown, when the gear 303 is driven to rotate counterclockwise, the upper rack and the lower rack can slide circumferentially around their respective rotation axes in a linked manner, so that when the upper rack and the lower rack are in the first linked position, the upper duct component 1a and the lower duct component 1b can be connected through the first intermediate connecting air duct 40. When the gear 303 is driven to rotate clockwise, the upper rack and the lower rack can slide circumferentially in the opposite direction around their respective rotation axes in a linked manner, so that when the upper rack and the lower rack are in the second linked position, the upper duct component 1a and the lower duct component 1b can be connected through the second intermediate connecting air duct 50.

[0102] In some embodiments of the present application, Figure 4 As shown, when the upper rack and the lower rack are in the first linkage position, a first intermediate connecting ventilation duct 40 is formed between the upper rack and the lower rack, and the first intermediate connecting ventilation duct 40 includes a first intermediate connecting ventilation duct segment A401, a first intermediate connecting ventilation duct segment B402 and a first intermediate connecting ventilation duct segment C403 which are sequentially connected, wherein the first intermediate connecting ventilation duct segment A401 is connected to the lower opening segment A2022 and gradually extends from the side of the lower opening segment A2022 to the side of the first intermediate connecting ventilation duct segment B402, and the first intermediate connecting ventilation duct segment C403 is connected to the upper opening segment A2021 and gradually extends from the side of the upper opening segment A2021 to the side of the first intermediate connecting ventilation duct segment B402;

[0103] like Figure 5 As shown, when the upper rack and the lower rack are in the second linkage position, a second intermediate connecting ventilation duct 50 is formed between the upper rack and the lower rack, and the second intermediate connecting ventilation duct 50 includes a second intermediate connecting ventilation duct segment A501, a second intermediate connecting ventilation duct segment B502 and a second intermediate connecting ventilation duct segment C503 which are connected in sequence, wherein the second intermediate connecting ventilation duct segment A501 is connected to the upper opening segment B2023 and gradually extends from the side of the upper opening segment B2023 to the side of the second intermediate connecting ventilation duct segment B502, and the second intermediate connecting ventilation duct segment C503 is connected to the lower opening segment B2024 and gradually extends from the side of the lower opening segment B2024 to the side of the second intermediate connecting ventilation duct segment B502.

[0104] In some embodiments of the present application, the second flow path control mechanism mentioned above includes a first stopper 70 movably disposed at the position of the upper opening section A2021 and a second stopper 80 movably disposed at the position of the lower opening section A2022;

[0105] The first stopper 70 is used to open or close the upper opening section A2021, and the second stopper 80 is used to open or close the lower opening section A2022. The first stopper 70 and the second stopper 80 can control the connection state and / or connection position of the upper air duct component 1a and the lower air duct component 1b in combination with the movement of the first flow path control mechanism.

[0106] That is, the air duct structure in the present application can also realize the simultaneous delivery of air up and down. Specifically, when the air duct structure is intended to be endowed with the function of delivering air up and down simultaneously, the air duct structure is combined with the air duct structure. Figure 2 , Figure 4 and Figure 8 , the first flow path control member A301 (preferably the upper rack) and the first flow path control member B302 (preferably the lower rack) can be controlled to be in the first linkage position, that is, Figure 4 At the same time, the first stopper 70 is controlled to close the upper opening section A2021, and the second stopper 80 is controlled to close the lower opening section A2022. At this time, the fan outlet 202 of the upper air duct component 1a is completely closed, and the fan outlet 202 of the lower air duct component 1b is completely closed. Figure 8 As shown, when the centrifugal fan 20 in the upper duct component 1a and the centrifugal fan 20 in the lower duct component 1b are started at the same time, the upper duct component 1a in the duct structure supplies air upward and the lower duct component 1b supplies air downward, thereby achieving the effect of simultaneous upper and lower air supply in the duct structure.

[0107] It is worth noting that in order to facilitate the control of the opening and closing of the upper opening section A2021 and the lower opening section A2022, and considering the cost, as Figure 2 , Figure 4 and Figure 5 As shown, preferably, the first baffle 70 and the second baffle 80 are both controllable rotation baffles. Further preferably, in order to avoid excessive noise when the air duct structure supplies air simultaneously up and down, the first baffle 70 and the second baffle 80 are controllable rotation arc-shaped baffles. By setting the first baffle 70 and the second baffle 80 as arc-shaped baffles, on the one hand, the noise of the air duct structure when supplying air simultaneously up and down can be reduced, and on the other hand, the loss of air supply volume when the air duct structure supplies air simultaneously up and down can be avoided.

[0108] In some embodiments of the present application, the third flow path control mechanism 60 is used to open or close the first air duct 11. It is worth noting that the third flow path control mechanism 60 mentioned here is used to open or close the first air duct 11, which means that a third flow path control mechanism 60 is provided in the first air duct 11 of each air duct component, and each third flow path control mechanism 60 can independently control the opening or closing of the first air duct 11 in an air duct component; wherein

[0109] like Fig. 9As shown, when the first flow path control mechanism 30 is in the first linkage position, the third flow path control mechanism 60 in the upper air duct component 1a opens the first air duct 11 in the upper air duct component 1a, and the third flow path control mechanism 60 in the lower air duct component 1b closes the first air duct 11 in the lower air duct component 1b, so that the upper air duct component 1a and the lower air duct component 1b send air upward; that is, at this time, the first shell opening 101 opening downward in the lower air duct component 1b is closed, and the airflow in the lower air duct component 1b cannot be sent downward through the first shell opening 101, but can only enter the upper air duct component 1a through the second shell opening 102;

[0110] like Fig.10 As shown, when the first flow path control mechanism 30 is in the second linkage position, the third flow path control mechanism 60 in the upper air duct component 1a closes the first air duct 11 in the upper air duct component 1a, and the third flow path control mechanism 60 in the lower air duct component 1b opens the first air duct 11 in the lower air duct component 1b, so that the upper air duct component 1a and the lower air duct component 1b can deliver air downward; that is, at this time, the first shell opening 101 in the upper air duct component 1a that opens upward is closed, and the airflow in the upper air duct component 1a cannot be delivered upward through the first shell opening 101, but can only enter the lower air duct component 1b through the second shell opening 102.

[0111] In summary, when the above-mentioned air duct structure is installed in a cabinet air conditioner with upper and lower air outlet functions, the air conditioner can achieve the upper air supply effect, the lower air supply effect and the upper and lower simultaneous air supply effect.

[0112] like Figure 8 As shown, the air conditioner at this time is equipped with the above-mentioned air duct structure and achieves the effect of supplying air simultaneously from top to bottom.

[0113] like Fig. 9 As shown, the air conditioner at this time is installed with the above-mentioned air duct structure and realizes the single upward air supply effect.

[0114] like Fig.10 As shown, the air conditioner at this time is installed with the above-mentioned air duct structure and realizes the single downward air supply effect.

[0115] It is worth noting that in order to enable the air conditioner to achieve a larger air volume in different air supply modes, in some embodiments of the present application, such as Figure 2 , Figure 4 and Figure 5 As shown, a return air port 110 is provided on the air duct wall of the first air duct 11, and one end of the return air port 110 is connected to the first air duct 11, and the other end is connected to the external environment of the air duct structure; it should be noted that the return air port 110 is provided on the air duct wall of the first air duct 11 mentioned here, which means that the return air port 110 is provided in the first air duct 11 of each air duct component {upper air duct component 1a and lower air duct component 1b};

[0116] The third flow path control mechanism 60 can close the return air outlet 110 while opening the first air duct 11 , and the third flow path control mechanism 60 can open the return air outlet 110 while closing the first air duct 11 .

[0117] The advantage of this is that Fig. 9 As shown, when the air conditioner operates in the single up-air supply mode, the airflow entering into the first air duct 11 of the down-air duct component 1b through the down-air outlet 22 of the air conditioner can enter into the body shell channel formed between the air duct structure and the air conditioner casing through the return air outlet 110, and enter into the axial air inlet of the centrifugal fan through the body shell channel, thereby increasing the air intake volume of the centrifugal fan 20, and further increasing the air supply volume of the air conditioner when operating in the single up-air supply mode.

[0118] Similarly, if Fig.10 As shown, when the air conditioner operates in the single downward air supply mode, the airflow entering the first air duct 11 of the upper air duct component 1a through the upper air outlet 21 of the air conditioner can also enter the fuselage shell channel formed between the air duct structure and the air conditioner casing through the return air outlet 110, and enter the axial air inlet of the centrifugal fan through the fuselage shell channel, thereby increasing the air intake volume of the centrifugal fan 20, and then increasing the air supply volume of the air conditioner when the air conditioner is in the single downward air supply mode.

[0119] In summary, when the above-mentioned air duct structure is installed in the air conditioner, the air conditioner can have a large air supply volume whether it is supplying air from above or from below. At the same time, while satisfying the large air supply effect, it can also effectively control the noise generated by the air conditioner during air supply.

[0120] In order to make the application of the air duct structure in this application clearer in actual products, Figure 6-Figure 10 As shown, the second aspect of the embodiment of the present application further provides an air conditioner, which includes:

[0121] The casing 2 has an upper air outlet 21 at the upper part and a lower air outlet 22 at the lower part. The casing 2 has the above-mentioned air duct structure inside.

[0122] The first air duct 11 of the upper air duct component 1a in the air duct structure is connected to the upper air outlet 21 , and the first air duct 11 of the lower air duct component 1b is connected to the lower air outlet 22 .

[0123] That is, the air conditioner provided in the embodiment of the present application is a cabinet-type air conditioner having an upper air outlet 21 on the top, a lower air outlet 22 on the bottom, and the above-mentioned air duct structure inside.

[0124] As can be seen from the above contents, when the above air duct structure is installed in a cabinet air conditioner, the cabinet air conditioner can have a simultaneous upper and lower air supply mode, an upper air supply mode only, and a lower air supply mode only.

[0125] When the air conditioner needs to cool or heat quickly, the air conditioner can be operated in the upper and lower simultaneous air supply mode; when the air conditioner needs to run the cooling mode, the air conditioner can be operated in the upper air supply mode; when the air conditioner needs to run the heating mode, the air conditioner can be operated in the lower air supply mode.

[0126] When the air conditioner runs in the rapid cooling or rapid heating mode, the first flow path control component A301 and the first flow path control component B302 are in the initial position {that is, the first flow path control component A301 and the first flow path control component B302 are in the first linkage position at this time}, the first baffle 70 closes the upper opening section A2021, the second baffle 80 closes the lower opening section A2022, the centrifugal fan 20 of the upper air duct component 1a and the centrifugal fan 20 of the lower air duct component 1b work separately and independently, the third flow path control mechanism 60 in the upper air duct component 1a closes the return air port 110 of the upper air duct component 1a, and the third flow path control mechanism 60 in the lower air duct component 1b closes the return air port 110 of the upper air duct component 1a. The three-channel control mechanism 60 closes the return air outlet 110 of the lower air duct component 1b, and the centrifugal fans 20 of the upper air duct component 1a and the centrifugal fans 20 of the lower air duct component 1b are started at the same time. The indoor air enters the fuselage shell channel from the upper air outlet 21 and the lower air outlet 22 respectively. A part of the air passes through the heat exchange component 5 and enters the centrifugal fan 20 of the upper air duct component 1a, and is blown out from the upper air outlet 21 under the action of the upper fan system. The other part of the air passes through the heat exchange component 5 and enters the lower fan system, and is blown out from the lower air outlet 22 under the action of the lower fan system, so that the upper and lower air outlets are discharged at the same time. At this time, the entire heat exchange component 5 is working. Figure 8 shown.

[0127] When the air conditioner is in cooling mode, the first flow path control component A301 and the first flow path control component B302 are in the initial position {that is, the first flow path control component A301 and the first flow path control component B302 are in the first linkage position at this time}, the first stopper 70 opens the upper opening section A2021, the second stopper 80 opens the lower opening section A2022, and a first intermediate connecting air duct 40 is formed between the upper air duct component 1a and the lower air duct component 1b, the centrifugal fan 20 of the upper air duct component 1a and the centrifugal fan 20 of the lower air duct component 1b interact with each other through the first intermediate connecting air duct 40, the return air port 110 in the lower air duct component 1b is opened by the third flow path control mechanism 60, and the lower air port 22 of the air conditioner is switched to the air inlet, the return air port 110 in the upper air duct component 1a is closed by the third flow path control mechanism 60, and the centrifugal fan 20 in the lower air duct component 1b is closed. The rotation speed of the fan 20 is higher than that of the centrifugal fan 20 in the upper air duct component 1a, so that the pressure in the cavity of the lower air duct component 1b is higher than that in the cavity of the upper air duct component 1a. A part of the wind passes through the heat exchange component 5 and enters the fan system of the lower air duct component 1b. Under the action of the fan system of the lower air duct component 1b, the wind passes through the first intermediate connecting air duct from the fan system of the lower air duct component 1b along the direction of wind rotation and enters the fan system of the upper air duct component 1a. Another part of the wind passes through the heat exchange component 5 and enters the fan system of the upper air duct component 1a. All the wind is blown out from the upper air outlet 21 under the action of the fan system of the upper air duct component 1a. Since the wind entering the upper fan system from the lower fan system enters along the flow direction, the noise is low and the air volume at the upper air outlet is increased. In this mode, the heat exchange components are all working, which can solve the problem of uneven heat exchange in this mode, such as Fig. 9 shown.

[0128] When the air conditioner is in heating mode, the first stopper 70 opens the upper opening section A2021, the second stopper 80 opens the lower opening section A2022, and the first flow path control mechanism 30 moves. Specifically, the upper rack and the lower rack rotate in opposite directions to positions close to the first stopper 70 and the second stopper 80, respectively, that is, the upper rack and the lower rack are in the second linkage position at this time, and a second intermediate connecting air duct 50 is formed between the upper air duct component 1a and the lower air duct component 1b. The centrifugal fan 20 of the upper air duct component 1a and the centrifugal fan 20 of the lower air duct component 1b work with each other through the second intermediate connecting air duct 50, the return air outlet 110 in the upper air duct component 1a is opened by the third flow path control mechanism 60, and the return air outlet 110 in the lower air duct component 1b is closed by the third flow path control mechanism 60. , the rotation speed of the centrifugal fan 20 in the lower air duct component 1b is lower than the rotation speed of the centrifugal fan 20 in the upper air duct component 1a, so that the cavity pressure of the upper air duct component 1a is higher than the cavity pressure of the lower air duct component 1b. Part of the wind enters the upper fan system through the heat exchange component 5. Under the action of the upper fan system, the wind enters the fan system of the lower air duct component 1b from the upper fan system along the direction of wind rotation through the second intermediate connecting air duct 50. Another part of the wind enters the lower fan system through the heat exchange component. All the wind is blown out from the lower air outlet 22 under the action of the lower fan system. Since the wind entering the lower fan system from the upper fan system enters along the flow direction, the noise is low and the air volume at the lower air outlet is increased. In this mode, the heat exchange components 5 are all working, which can solve the problem of uneven heat exchange in this mode, such as Fig. 9 shown.

[0129] As can be seen from the above, the air flow entering the air conditioner through the air outlet of the air conditioner can enter the centrifugal fan 20 after heat exchange with the heat exchange component 5. It is worth noting that the above-mentioned heat exchange component 5 is arranged in the body shell channel defined between the air conditioner casing 2 and the air duct structure, and the heat exchange surface of the heat exchange component 5 is opposite to the axial air inlet of the centrifugal fan 20.

[0130] Preferably, Figure 6 As shown, the above-mentioned heat exchange component 5 is composed of two V-shaped heat exchangers, wherein each V-shaped heat exchanger corresponds to the axial air inlet of the double-suction fan. Specifically, the V-shaped heat exchanger includes an upper heat exchange part and a lower heat exchange part, wherein the upper heat exchange part corresponds to the axial air inlet of the double-suction fan in the upper air duct component 1a, and the lower heat exchange part corresponds to the axial air inlet of the double-suction fan in the lower air duct component 1b.

[0131] It should also be noted that in order to further increase the air volume of the air conditioner in different modes, such as Figure 8-Figure 10As shown, an upper auxiliary air inlet 23 is also provided at the upper part of the casing 2, and a lower auxiliary air inlet 24 is also provided at the lower part of the casing. Both the upper auxiliary air inlet 23 and the lower auxiliary air inlet 24 are communicated with the body shell channel, wherein the airflow entering into the casing shell channel through the upper auxiliary air inlet 23 and the lower auxiliary air inlet 24 can be sucked into the centrifugal fan 20 after heat exchange with the heat exchange component 5, thereby increasing the air supply volume of the air conditioner.

[0132] In some embodiments of the present application, Figure 6 , Figure 8-Figure 10 As shown, the air conditioner also includes:

[0133] The upper air outlet frame 3 and the lower air outlet frame 4, the upper air outlet frame 3 forms an upper air outlet duct, and the lower air outlet frame 4 forms a lower air outlet duct, one end of the upper air outlet duct is connected to the first shell opening 101 of the upper air duct component 1a, and the other end is connected to the upper air outlet 21, and one end of the lower air outlet duct is connected to the first shell opening 101 of the lower air duct component 1b, and the other end is connected to the lower air outlet 22;

[0134] The air conditioner also includes:

[0135] A front panel 2a and an air inlet component 2b constituting the housing; and

[0136] A top cover 2c is arranged on the top of the upper air outlet frame 3 and a bottom plate 2d is arranged on the bottom of the lower air outlet frame 4.

[0137] In summary, the air conditioner in the embodiment of the present application adopts the air duct structure mentioned in the first aspect above, so it can have a large air supply volume whether it is supplying air from above or from below. At the same time, while meeting the effect of large air supply volume, it can also effectively control the noise generated by the air conditioner during air supply.

[0138] Furthermore, the third aspect of the embodiment of the present application further provides an air supply control method for an air conditioner, the control method is applied to the above-mentioned air conditioner, the air conditioner has a single upper air outlet cooling mode with air inlet at the lower air outlet and air outlet at the upper air outlet, and the air conditioner also has a single lower air outlet heating mode with air inlet at the upper air outlet and air outlet at the lower air outlet, the control method includes:

[0139] When the air conditioner performs the single upper air outlet cooling mode, the upper air duct component 1a and the lower air duct component 1b are connected by controlling the flow path control mechanism, and the upper air duct component 1a and the lower air duct component 1b both send air upward, and the rotation speed of the centrifugal fan 20 in the upper air duct component 1a is controlled to be lower than the rotation speed of the centrifugal fan 20 in the lower air duct component 1b, so that the airflow in the lower air duct component 1b is merged into the upper air duct component 1a under the action of the pressure difference;

[0140] When the air conditioner executes the single downward air outlet cooling mode, the upper air duct component 1a and the lower air duct component 1b are connected by controlling the flow path control mechanism, and both the upper air duct component 1a and the lower air duct component 1b supply air downward, and the rotation speed of the centrifugal fan 20 in the upper air duct component 1a is controlled to be lower than the rotation speed of the centrifugal fan 20 in the lower air duct component 1b, so that the airflow in the upper air duct component 1a is merged into the lower air duct component 1b under the action of the pressure difference.

[0141] The specific control steps have been described in detail in the second aspect of the embodiment of the present application and will not be described in detail here.

[0142] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. The description and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0143] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An air duct structure, characterized in that: The invention comprises an upper air duct component (1a) and a lower air duct component (1b), wherein the upper air duct component (1a) and the lower air duct component (1b) are arranged adjacent to each other in the height direction of the air duct structure, and the upper air duct component (1a) and the lower air duct component (1b) both comprise: An air duct housing (10) and a centrifugal fan (20), wherein the air duct housing (10) is formed with a first housing opening (101) at one end in its height direction and with a second housing opening (102) at the other end; A fan installation cavity for installing the centrifugal fan (20) is formed inside the air duct housing (10), a fan air inlet is formed in the axial direction of the fan installation cavity, a fan air outlet 1 (201) is formed at one end of the fan installation cavity in the height direction of the air duct housing (10), and a fan air outlet 2 (202) is formed at the other end, a first air duct (11) is connected between the fan air outlet 1 (201) and the first housing opening (101), a second air duct is connected between the fan air outlet 2 (202) and the second housing opening (102), and the upper air duct component (1a) and the lower air duct component (1b) are fluidically connected via the two second housing openings (102); The air duct structure also includes: A flow path control mechanism, the flow path control mechanism is used to control the connection state of the two second shell ports (102) and / or the connection position of the two second shell ports (102) and / or the air supply direction of the upper air duct component (1a) and / or the air supply direction of the lower air duct component (1b); in When the upper air duct component (1a) and the lower air duct component (1b) are controlled to supply air upward, the two second shell openings (102) are controlled to be connected, and the rotation speed of the centrifugal fan (20) in the upper air duct component (1a) is controlled to be lower than the rotation speed of the centrifugal fan (20) in the lower air duct component (1b), so that the airflow in the lower air duct component (1b) is merged into the upper air duct component (1a) under the action of pressure difference; When the upper air duct component (1a) and the lower air duct component (1b) are controlled to supply air downward, the two second shell openings (102) are controlled to be connected, and the rotation speed of the centrifugal fan (20) in the upper air duct component (1a) is controlled to be higher than the rotation speed of the centrifugal fan in the lower air duct component (1b), so that the airflow in the upper air duct component (1a) is merged into the lower air duct component (1b) under the action of pressure difference; The flow path control mechanism comprises a first flow path control mechanism (30), a second flow path control mechanism and a third flow path control mechanism; The first flow path control mechanism (30) and the second flow path control mechanism are arranged at the communication position of the two second shell openings (102), and are used to control the communication state and / or communication position of the upper air duct component (1a) and the lower air duct component (1b); The third flow path control mechanism is arranged in the first air duct (11) of the upper air duct component (1a) and in the first air duct (11) of the lower air duct component (1b), and is used to control the air supply direction of the upper air duct component (1a) and the air supply direction of the lower air duct component (1b); The first flow path control mechanism (30) comprises a first flow path control member A (301) and a first flow path control member B (302) which can be controlled to be linked, and the first flow path control member A (301) and the first flow path control member B (302) have a first linked position and a second linked position when linked; When the first flow path control component A (301) and the first flow path control component B (302) are in the first linkage position, the second fan outlet (202) in the upper air duct component (1a) includes an upper closed section A closed by the first flow path control component A (301) and an upper open section A (2021) not closed by the first flow path control component A (301), and the second fan outlet (202) in the lower air duct component (1b) includes a lower closed section A closed by the first flow path control component B (302) and a lower open section A (2022) not closed by the first flow path control component B (302), and the upper open section A (202 1) and the lower opening section A (2022) are connected with a first intermediate connecting air duct (40), wherein in the rotation direction of the centrifugal fan (20) in the upper air duct component (1a), the upper opening section A (2021) comprises an upper opening section edge A1 and an upper opening section edge A2 arranged along the rotation direction, and the upper opening section edge A1 is located below the upper opening section edge A2, and in the rotation direction of the centrifugal fan (20) in the lower air duct component (1b), the lower opening section A comprises a lower opening section edge A1 and a lower opening section edge A2 arranged along the rotation direction, and the lower opening section edge A1 is located below the lower opening section edge A2; When the first flow path control component A (301) and the first flow path control component B (302) are in the second linkage position, the second fan outlet (202) in the upper air duct component (1a) comprises an upper closed section B closed by the first flow path control component A (301) and an upper open section B (2023) not closed by the first flow path control component A (301), and the second fan outlet (202) in the lower air duct component (1b) comprises a lower closed section B closed by the first flow path control component B (302) and a lower open section B (2024) not closed by the first flow path control component B (302), and the upper open section B ( A second intermediate connecting air duct (50) is connected between the upper opening section (2023) and the lower opening section B (2024), wherein in the rotation direction of the centrifugal fan (20) in the upper air duct component (1a), the upper opening section B (2023) comprises an upper opening section edge B1 and an upper opening section edge B2 relative to each other, and the upper opening section edge B1 is located above the upper opening section edge B2, and in the rotation direction of the centrifugal fan (20) in the lower air duct component (1b), the lower opening section B (2024) comprises a lower opening section edge B1 and a lower opening section edge B2 relative to each other, and the lower opening section edge B1 is located below the lower opening section edge B2; The rotation direction of the centrifugal fan (20) in the upper air duct component (1a) is opposite to the rotation direction of the centrifugal fan (20) in the lower air duct component (1b).

2. The air duct structure according to claim 1, characterized in that: The second fan outlet (202) of the upper air duct component (1a) is an arc-shaped outlet, and the first flow path control component A (301) comprises an upper rack arranged at the position of the second fan outlet (202) of the upper air duct component (1a), the upper rack being constructed to fit the arc-shaped teeth of the shape of the second fan outlet (202) in the upper air duct component (1a), and the upper rack being capable of circumferentially sliding around a preset rotation axis of the centrifugal fan (20) in the upper air duct component (1a); The second fan outlet (202) of the lower air duct component (1b) is an arc-shaped outlet, the first flow path control component B (302) comprises a lower rack arranged at the position of the second fan outlet (202) of the lower air duct component (1b), the lower rack being constructed to fit the arc-shaped teeth of the shape of the second fan outlet (202) in the lower air duct component (1b), and the upper rack being capable of circumferentially sliding around a preset rotation axis of the centrifugal fan in the lower air duct component (1b); The upper rack and the lower rack of the arc-shaped structure are arranged opposite to each other and at intervals in the height direction of the air duct structure, and the convex surfaces of the upper rack and the lower rack of the arc-shaped structure are opposite to each other and the concave surfaces are facing the corresponding air duct component of the centrifugal fan (20), wherein the concave surfaces of the upper rack and the lower rack facing the corresponding air duct component constitute at least part of the air duct profile of the corresponding air duct component; The first flow path control mechanism (30) further comprises a gear (303) rotatably arranged between the upper rack and the lower rack, the gear (303) being meshed with both the upper rack and the lower rack, and the gear (303) can be driven to rotate; When the gear (303) is driven to rotate, the upper rack and the lower rack can slide circumferentially around their respective rotation axes in a linked manner, so that when the upper rack and the lower rack are in the first linked position, the upper air duct component (1a) and the lower air duct component (1b) can be connected through the first intermediate connecting air duct (40), and when the upper rack and the lower rack are in the second linked position, the upper air duct component (1a) and the lower air duct component (1b) can be connected through the second intermediate connecting air duct (50).

3. The air duct structure according to claim 2, characterized in that: When the upper rack and the lower rack are in the first linkage position, the first intermediate connecting ventilation duct (40) is formed between the upper rack and the lower rack, and the first intermediate connecting ventilation duct (40) comprises a first intermediate connecting ventilation duct section A (401), a first intermediate connecting ventilation duct section B (402) and a first intermediate connecting ventilation duct section C (403) which are connected in sequence, wherein the first intermediate connecting ventilation duct section A (401) is connected to the lower opening section A (2022) and gradually extends from the side of the lower opening section A (2022) to the side of the first intermediate connecting ventilation duct section B (402), and the first intermediate connecting ventilation duct section C (403) is connected to the upper opening section A (2021) and gradually extends from the side of the upper opening section A (2021) to the side of the first intermediate connecting ventilation duct section B (402); When the upper rack and the lower rack are in the second linkage position, the second intermediate connecting ventilation duct (50) is formed between the upper rack and the lower rack, and the second intermediate connecting ventilation duct (50) comprises a second intermediate connecting ventilation duct section A (501), a second intermediate connecting ventilation duct section B (502) and a second intermediate connecting ventilation duct section C (503) which are connected in sequence, wherein the second intermediate connecting ventilation duct section A (501) is connected to the upper opening section B (2023) and gradually extends from the side of the upper opening section B (2023) to the side of the second intermediate connecting ventilation duct section B (502), and the second intermediate connecting ventilation duct section C (503) is connected to the lower opening section B (2024) and gradually extends from the side of the lower opening section B (2024) to the side of the second intermediate connecting ventilation duct section B (502).

4. The air duct structure according to any one of claims 1 to 3, characterized in that: The second flow path control mechanism comprises a first stopper (70) movably arranged at the position of the upper opening section A (2021) and a second stopper (80) movably arranged at the position of the lower opening section A (2022); The first baffle (70) is used to open or close the upper opening section A (2021), and the second baffle (80) is used to open or close the lower opening section A (2022). The first baffle (70) and the second baffle (80) can control the connection state and / or connection position of the upper air duct component (1a) and the lower air duct component (1b) in combination with the movement of the first flow path control mechanism.

5. The air duct structure according to any one of claims 1 to 3, characterized in that: The third flow path control mechanism (60) is used to open or close the first air duct (11); wherein When the first flow path control mechanism (30) is in the first linkage position, the third flow path control mechanism (60) in the upper air duct component (1a) opens the first air duct (11) in the upper air duct component (1a), and the third flow path control mechanism (60) in the lower air duct component (1b) closes the first air duct (11) in the lower air duct component (1b), so that the upper air duct component (1a) and the lower air duct component (1b) supply air upwards; When the first flow path control mechanism (30) is in the second linkage position, the third flow path control mechanism (60) in the upper air duct component (1a) closes the first air duct (11) in the upper air duct component (1a), and the third flow path control mechanism (60) in the lower air duct component (1b) opens the first air duct (11) in the lower air duct component (1b), so that the upper air duct component (1a) and the lower air duct component (1b) supply air downward.

6. The air duct structure according to claim 3, characterized in that: An air return port (110) is provided on the air duct wall of the first air duct (11), one end of the air return port (110) is connected to the first air duct (11), and the other end is connected to the external environment of the air duct structure; The third flow path control mechanism (60) is capable of closing the return air outlet (110) while opening the first air duct (11), and the third flow path control mechanism (60) is capable of opening the return air outlet (110) while closing the first air duct (11).

7. An air conditioner, characterized in that: include: A casing (2), wherein an upper air outlet (21) is provided at an upper portion of the casing (2), a lower air outlet (22) is provided at a lower portion of the casing (2), and an air duct structure according to any one of claims 1 to 6 is provided inside the casing (2); The first air duct (11) of the upper air duct component (1a) in the air duct structure is connected to the upper air outlet (21), and the first air duct (11) of the lower air duct component (1b) is connected to the lower air outlet (22).

8. The air conditioner according to claim 7, characterized in that: A fuselage shell channel is defined between the casing (2) and the air duct structure; A heat exchange component (5) is provided in the fuselage shell channel, and a heat exchange surface of the heat exchange component (5) is opposite to an axial air inlet of the centrifugal fan (20); The upper portion of the casing (2) is also provided with an upper auxiliary air inlet (23), and the lower portion of the casing (2) is also provided with a lower auxiliary air inlet (24), and both the upper auxiliary air inlet (23) and the lower auxiliary air inlet (24) are in communication with the fuselage shell channel.

9. The air conditioner according to claim 8, characterized in that: The air conditioner also includes: An upper air outlet frame (3) and a lower air outlet frame (4), wherein the upper air outlet frame (3) forms an upper air outlet duct, and the lower air outlet frame (4) forms a lower air outlet duct, wherein one end of the upper air outlet duct is connected to a first shell opening (101) of the upper air outlet component (1a), and the other end is connected to the upper air outlet (21), and one end of the lower air outlet duct is connected to the first shell opening (101) of the lower air outlet component (1b), and the other end is connected to the lower air outlet (22); The air conditioner also includes: A front panel (2a) and an air inlet component (2b) constituting the housing (2); and A top cover (2c) provided at the top of the upper air outlet frame (3) and a bottom plate (2d) provided at the bottom of the lower air outlet frame (4).

10. A method for controlling air supply of an air conditioner, characterized in that: The control method is applied to the air conditioner according to any one of claims 7 to 9, wherein the air conditioner has a single upper air outlet cooling mode with air inlet at the lower air outlet and air outlet at the upper air outlet, and the air conditioner also has a single lower air outlet heating mode with air inlet at the upper air outlet and air outlet at the lower air outlet, and the control method comprises: When the air conditioner performs a single upper air outlet cooling mode, the flow path control mechanism is controlled to connect the upper air duct component (1a) and the lower air duct component (1b), and both the upper air duct component (1a) and the lower air duct component (1b) supply air upwards, and the rotation speed of the centrifugal fan (20) in the upper air duct component (1a) is controlled to be lower than the rotation speed of the centrifugal fan (20) in the lower air duct component (1b), so that the airflow in the lower air duct component (1b) merges into the upper air duct component (1a) under the action of the pressure difference; When the air conditioner executes a single downward air outlet heating mode, the flow path control mechanism is controlled to connect the upper duct component (1a) and the lower duct component (1b), and both the upper duct component (1a) and the lower duct component (1b) deliver air downward, and the rotation speed of the centrifugal fan (20) in the upper duct component (1a) is controlled to be higher than the rotation speed of the centrifugal fan (20) in the lower duct component (1b), so that the airflow in the upper duct component (1a) merges into the lower duct component (1b) under the action of a pressure difference.

Images