Air conditioning equipment

Abstract

The present invention discloses an air conditioning device, comprising a return air duct, a fresh air duct, a heat exchange component, a damper component and an air supply device. The return air duct comprises a first main air duct connected to an upper air outlet, a second main air duct connected to a lower air outlet, and a first sub-air duct and a second sub-air duct extending between the first main air duct and the second main air duct. The heat exchange component is arranged in the first main air duct and the second main air duct. The air supply device can supply air from the upper air outlet through the first main air duct and the first sub-air duct to the lower air outlet during heating; and can also supply air from the lower air outlet through the second main air duct and the second sub-air duct to the upper air outlet during cooling. The damper component is used to control the communication between the first main air duct and the first sub-air duct or the second sub-air duct; and is also used to control the communication between the second main air duct and the first sub-air duct or the second sub-air duct. The fresh air duct is connected to the return air duct, and its connection port is located between the first heat exchanger and the second heat exchanger. The device can improve user comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioning device. Background Art

[0002] Air conditioners are currently commonly used indoor temperature and humidity control devices that can blow cold or hot air from indoors according to demand. Air conditioners usually include an air outlet and an air inlet, and the air outlet is used to blow cold or hot air. On an air conditioner controller, the air outlet and air inlet are usually set on the cabinet housing, and the air outlet is usually located at the top and the air inlet is located at the bottom.

[0003] The existing air outlet and air inlet of the air conditioner cannot be switched with each other, and both cold and hot air are blown out from the top. Since hot air is lighter than cold air and is located at a higher position than cold air, when the air conditioner is in heating mode, the hot air blown out from the top will stay at a higher position in the room, which is not conducive to uniform mixing with the cold air at a lower position, resulting in a slow indoor temperature rise and poor user experience. In addition, as the concentration of carbon dioxide increases due to human activities, the inability to change fresh air or the improper setting of the fresh air position will also reduce human comfort. Summary of the invention

[0004] In view of this, the present invention provides an air conditioning device to solve the above problems, specifically:

[0005] The present invention discloses an air conditioning device, comprising a return air duct, a fresh air duct, a heat exchange component, a damper component and an air supply device, wherein:

[0006] The return air duct extends along the height direction of the air conditioning device, and is provided with an upper air outlet at its upper end and a lower air outlet at its lower end, and the upper air outlet and the lower air outlet can be switched to be an air inlet and an air outlet;

[0007] The return air duct includes a first main air duct connected to the upper air outlet, a second main air duct connected to the lower air outlet, and a first sub-air duct and a second sub-air duct extending between the first main air duct and the second main air duct;

[0008] The heat exchange assembly comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is arranged in the first main air duct, and the second heat exchanger is arranged in the second main air duct;

[0009] The air supply device comprises a first fan and a second fan, wherein the first fan is arranged in the first sub-air duct, and is used to supply air from the upper air port through the first main air duct and the first sub-air duct to the lower air port when the air conditioning equipment is performing heating; the second fan is arranged in the second sub-air duct, and is used to supply air from the lower air port through the second main air duct and the second sub-air duct to the upper air port when the air conditioning equipment is performing cooling;

[0010] The damper assembly includes a first damper and a second damper, wherein the first damper is arranged in the first main air duct and is located on a side of the first heat exchanger away from the upper air outlet, so as to control the communication between the first main air duct and the first sub-air duct or the second sub-air duct; the second damper is arranged in the second main air duct and is located on a side of the second heat exchanger away from the lower air outlet, so as to control the communication between the second main air duct and the first sub-air duct or the second sub-air duct;

[0011] The fresh air duct is connected to the return air duct, and a connection port thereof is located between the first heat exchanger and the second heat exchanger.

[0012] Further optional,

[0013] It also includes a partition assembly for cooperating with the first fan and the second fan to separate the first sub-duct and the second sub-duct in the return air duct.

[0014] Further optional,

[0015] The partition assembly includes an upper partition, a middle partition and a lower partition connected in sequence,

[0016] The upper partition is arranged in the first main air duct, and is used to separate the lower section of the first main air duct into the upper section of the first sub-air duct and the upper section of the second sub-air duct;

[0017] The middle partition is used to separate the inlet of the first fan and the inlet of the second fan between the first fan and the second fan;

[0018] The lower partition is arranged in the second main air duct, and is used to separate the upper section of the second main air duct into the lower section of the first sub-air duct and the lower section of the second sub-air duct;

[0019] The upper section of the first sub-duct, the inlet of the first fan, the outlet of the first fan and the lower section of the first sub-duct are connected in sequence; the lower section of the second sub-duct, the inlet of the second fan, the outlet of the second fan and the upper section of the second sub-duct are connected in sequence.

[0020] Further optional,

[0021] The first fan includes a first volute and a first motor assembly disposed in the first volute, wherein: an inlet of the first volute is communicated with an upper section of the first sub-air duct; an outlet of the first volute is communicated with a lower section of the first sub-air duct,

[0022] The second fan includes a second volute and a second motor assembly arranged in the first volute, wherein: the inlet of the second volute is connected to the lower section of the second sub-air duct; the outlet of the second volute is connected to the upper section of the second sub-air duct.

[0023] Further optional,

[0024] The first damper is arranged at the upper end of the upper partition plate; the second damper is arranged at the lower end of the lower partition plate.

[0025] Further optional,

[0026] The first heat exchanger is arranged between the first damper and the upper air outlet; the second heat exchanger is arranged between the second damper and the lower air outlet.

[0027] Further optional,

[0028] The connection port of the fresh air duct is located between the second air door and the second heat exchanger.

[0029] Further optional,

[0030] The air conditioning device further comprises a control unit, which is electrically connected to the heat exchange assembly, the damper assembly and the air supply device respectively.

[0031] When the air conditioning equipment is heating, the control unit controls the operation of the heat exchange component, starts the first fan in the air supply device, and controls the damper component to close the second sub-air duct; when the air conditioning equipment is cooling, the control unit controls the operation of the heat exchange component, starts the second fan in the air supply device, and controls the damper component to close the first sub-air duct.

[0032] Further optional,

[0033] The air conditioning device further comprises a fresh air component, wherein the fresh air component comprises a fresh air inlet and a fresh air outlet.

[0034] The fresh air inlet is located on the outdoor side; the fresh air outlet is connected to the fresh air duct.

[0035] Further optional,

[0036] The control unit is also electrically connected to the fresh air component, wherein: when the air conditioning device operates in a fresh air exchange mode, the control unit controls the fresh air component to deliver fresh air into the room through the return air duct.

[0037] Beneficial effect: The air conditioning equipment provided by the present invention optimizes the installation position of the fresh air module of full heat exchange, and switches the corresponding air inlet and outlet positions according to the two modes of cooling and heating. When the fresh air exchange and cooling or heating work in coordination with each other, the user experience and comfort can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail its exemplary embodiments with reference to the accompanying drawings. The accompanying drawings described below are only some embodiments of the present disclosure, and it is clear to a person skilled in the art that other accompanying drawings can be obtained from these accompanying drawings without creative work.

[0039] Figure 1 A schematic diagram showing the internal structure of an air conditioning device according to an embodiment of the present invention is shown;

[0040] Figure 2 A schematic diagram of a cooling and air supply flow path of an air conditioning device according to an embodiment of the present invention is shown;

[0041] Figure 3 A schematic diagram of a heating and air supply flow path of an air conditioning device according to an embodiment of the present invention is shown.

[0042] In the figure: 11-first main air duct; 111-upper air outlet; 112-inlet of the first fan; 113-outlet of the second fan; 12-second main air duct; 121-lower air outlet; 122-outlet of the first fan; 123-inlet of the second fan; 21-first air gate; 22-second air gate; 231-first volute; 232-first motor assembly; 241-second volute; 242-second motor assembly; 3-connecting port of the fresh air duct; 41-first heat exchanger; 42-second heat exchanger; 51-upper partition; 52-middle partition; 53-lower partition. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0044] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the present disclosure.

[0045] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0046] It should be understood that although the terms first, second, third, etc. may be used herein to describe various structures, these structures should not be limited by these terms. These terms are used to distinguish one structure from another structure. Therefore, the first structure discussed below can be referred to as the second structure without departing from the teachings of the disclosed concepts. As used herein, the term "and / or" includes any one of the associated listed items and all combinations of one or more.

[0047] Those skilled in the art will appreciate that the drawings are merely schematic diagrams of example embodiments, and the modules or processes in the drawings are not necessarily necessary for implementing the present disclosure, and therefore cannot be used to limit the protection scope of the present disclosure.

[0048] At present, the air outlet mode of air conditioners is relatively fixed, that is, whether it is hot air or cold air, the air is inlet from the bottom and outlet from the top. Since hot air is lighter than cold air and is located at a higher position than cold air, when the air conditioner is in heating mode, the hot air blown from the top will stay at a higher position in the room and cannot be automatically mixed with the cold air at a lower position, resulting in a slow indoor temperature rise and poor user experience. Due to indoor wind circulation, the increase in carbon dioxide concentration caused by human activities will also lead to a decrease in user experience. To this end, the present invention improves the existing air conditioner and designs a dual centrifugal duct cabinet, which can realize that when cooling, the air enters the air conditioner from the lower end of the room and is sent out from the top; when heating, the air enters the air conditioner from the upper end of the room and is sent out from the bottom; and the fresh air module is located at the lower part of the air conditioner, but the fresh air outlet is set between the two heat exchangers, which can maximize the efficiency of heat exchange of fresh air.

[0049] To further explain the improved scheme adopted by the present invention, Figure 1-3It should be noted that the air conditioning device can be a fresh air cabinet.

[0050] In this embodiment, an air conditioning device is provided, including: a return air duct, a fresh air duct, a heat exchange component, a damper component and an air supply device. Based on the return air duct structure, in combination with the arrangement of a double fan, a double heat exchanger and a damper component, the fresh air duct is connected between the two heat exchangers in the return air duct, and no matter whether the air supply direction is up-in and down-out, or down-in and up-out, heat exchange is performed with the air in the air conditioner without blowing out a cabinet with a temperature inconsistent with that inside the air conditioner, and the inlet and outlet air can be switched in coordination with the cooling or heating process.

[0051] Specifically: the return air duct extends along the height direction of the air conditioning equipment, and is provided with an upper air port 111 at its upper end and a lower air port 121 at its lower end. The upper air port 111 and the lower air port 121 can be switched to be an air inlet and an air outlet. The return air duct includes a first main air duct 11 connected to the upper air port 111, a second main air duct 12 connected to the lower air port 121, and a first sub-air duct and a second sub-air duct extending between the first main air duct 11 and the second main air duct 12. The heat exchange component includes a first heat exchanger 41 and a second heat exchanger 42, wherein the first heat exchanger 41 is arranged in the first main air duct 11, and the second heat exchanger 42 is arranged in the second main air duct 12. The air supply device includes a first fan and a second fan, wherein the first fan is arranged in the first sub-air duct, and the first fan is used to supply air from the upper air port 111 through the first main air duct 11 and the first sub-air duct to the lower air port 121 when the air conditioning device is in heating mode; the second fan is arranged in the second sub-air duct, and the second fan is used to supply air from the lower air port 121 through the second main air duct 12 and the second sub-air duct to the upper air port 111 when the air conditioning device is in cooling mode. The damper assembly includes a first damper 21 and a second damper 22, wherein the first damper 21 is arranged in the first main air duct 11 and is on the side of the first heat exchanger away from the upper air port 111, so as to control the communication between the first main air duct 11 and the first sub-air duct or the second sub-air duct; the second damper 22 is arranged in the second main air duct 12 and is on the side of the second heat exchanger away from the lower air port 121, so as to control the communication between the second main air duct 12 and the first sub-air duct or the second sub-air duct. The fresh air duct is connected to the return air duct, and the connection port 3 of the fresh air duct is located between the first heat exchanger and the second heat exchanger.

[0052] In some optional implementations, based on the first main duct 11 and the second main duct 12 in the return air duct, a partition assembly can be used in cooperation with the first fan and the second fan to separate the middle section of the return air duct (between the two main air ducts) to form a first sub-duct and a second sub-duct extending and connected between the two main air ducts.

[0053] Preferably, the partition assembly includes an upper partition 51, a middle partition 52 and a lower partition 53 connected in sequence. The upper partition is arranged in the first main air duct 11, and the upper partition 51 separates the lower section of the first main air duct 11 into the upper section of the first sub-air duct and the upper section of the second sub-air duct; the middle partition 52 separates the inlet 112 of the first fan and the inlet 123 of the second fan between the first fan and the second fan; the lower partition 53 is arranged in the second main air duct 12, and the upper section of the second main air duct 12 is separated into the lower section of the first sub-air duct and the lower section of the second sub-air duct through the lower partition.

[0054] At this time, the upper section of the first sub-duct, the inlet 112 of the first fan, the outlet 122 of the first fan and the lower section of the first sub-duct are connected in sequence to form an air supply path; the lower section of the second sub-duct, the inlet 123 of the second fan, the outlet 113 of the second fan and the upper section of the second sub-duct are connected in sequence to form another air supply path.

[0055] In order to cooperate with the installation of the air duct and realize the switchable air supply mode of supplying air from top to bottom and from bottom to top, in this embodiment, the air supply mechanism adopts two independent fans, namely the above-mentioned: the first fan and the second fan. Correspondingly, the first sub-air duct and the second sub-air duct are respectively formed in the return air duct by the cooperation of the two fans and the partition assembly, and the first fan and the second fan are reversely connected in parallel. At this time, the inlet 112 of the first fan can be connected to the first main air duct 11, and the outlet 122 of the first fan can be connected to the second main air duct 12; the inlet 123 of the second fan can be connected to the second main air duct 12, and the outlet 113 of the second fan can be connected to the first main air duct 11.

[0056] Further, the first fan includes a first volute 231 and a first motor assembly 232 disposed in the first volute 231, wherein: the inlet of the first volute is connected to the upper section of the first sub-air duct; the outlet of the first volute is connected to the lower section of the first sub-air duct. The second fan includes a second volute 241 and a second motor assembly 242 disposed in the first volute 241, wherein: the inlet of the second volute is connected to the lower section of the second sub-air duct; the outlet of the second volute is connected to the upper section of the second sub-air duct.

[0057] At the same time, in order to ensure the uniformity of the air inlet and outlet of the two sub-air ducts, two fan motors are coaxially arranged facing each other, and the corresponding first volute and second volute are also arranged facing each other, and a common space is formed between the two volutes. The middle partition 52 is arranged in the common space, and the common space is symmetrically divided into a first space and a second space, wherein the first space is used to connect the upper section of the first sub-air duct with the inlet of the first volute; the second space is used to connect the lower section of the second sub-air duct with the inlet of the second volute. Figure 1As shown, optionally, the middle partition 52 is tilted and connected to the upper partition 51 and the lower partition 53 respectively, so that the shared space inside the air duct forms a completely independent two-way channel with the upper air duct 11 and the lower air duct. This design method not only ensures that the entrances of the two fans have a large space, but also makes the structure more compact, and does not take up too much space while meeting the installation requirements of the two fans. Through the dual-channel and dual-cavity design, one is used as the air supply flow path from the upper air outlet 111 to the lower air outlet 121, and the other is used as the air supply flow path from the lower air outlet 121 to the upper air outlet 111.

[0058] Preferably, the first damper is arranged at the upper end of the upper partition plate; the second damper is arranged at the lower end of the lower partition plate.

[0059] In an alternative solution, the volutes of the two fans can be directly used in conjunction with the middle partition, the two motors are coaxially arranged facing each other, and the inlets of the two volutes are arranged facing each other. At this time, the lower ends of the middle partition are respectively connected to the lower side of the inlet of the first volute and the upper side of the inlet of the second volute, and the left and right ends of the middle partition are connected and matched with the inner sides of the two walls of the return air duct; the outlet of the first volute extends into the second main air duct and occupies half of the internal space of the upper section of the second main air duct, and the other half is reserved for the air intake of the second fan (equivalent to the lower section of the second sub-air duct); the outlet of the second volute extends into the first main air duct and occupies half of the internal space of the lower section of the first main air duct, and the other half is reserved for the air intake of the first fan (equivalent to the upper section of the first sub-air duct). This method omits the upper and lower partitions, making the structure simpler, and it can also switch the air supply flow path in the return air duct. Correspondingly, the first damper can be set at the outlet of the second volute. When the outlet of the second volute is closed, the inlet of the first volute is correspondingly opened. Conversely, opening the outlet of the second volute closes the inlet of the first volute. The second damper can be set at the outlet of the first volute. When the outlet of the first volute is closed, the inlet of the second volute is correspondingly opened. Conversely, opening the outlet of the first volute closes the inlet of the second volute.

[0060] In a preferred implementation, in order to improve the heat exchange efficiency and ensure that the inlet and outlet air at both ends can be heated or cooled by the heat exchanger, the first heat exchanger is arranged between the first damper and the upper air outlet; the second heat exchanger is arranged between the second damper and the lower air outlet. The connection port of the fresh air duct is located between the second damper and the second heat exchanger.

[0061] The air conditioning device in this embodiment also includes a control unit, which is electrically connected to the heat exchange component, the damper component and the air supply device, respectively, wherein: when the air conditioning device is heating, the control unit controls the operation of the heat exchange component, starts the first fan in the air supply device, and controls the damper component to close the second sub-air duct; when the air conditioning device is cooling, the control unit controls the operation of the heat exchange component, starts the second fan in the air supply device, and controls the damper component to close the first sub-air duct. Further, the control unit is also electrically connected to the fresh air component, wherein: when the air conditioning device is running in the fresh air exchange mode, the control unit controls the fresh air component to supply fresh air into the room through the return air duct.

[0062] During operation, the control unit in the air conditioning equipment can control the dual heat exchangers to work simultaneously to enhance the cooling or heating efficiency. Through the connection port of the fresh air duct between the two heat exchangers, the fresh air can be heated or cooled before entering the room, so it will not affect the temperature of the air sent into the room. It should be noted that a single heat exchanger can also be used for operation, which can reduce energy consumption. Accordingly, when heating, only the second heat exchanger is operated; when cooling, only the first heat exchanger is operated.

[0063] When the air conditioning device is a fresh air cabinet, other specific components of the fresh air cabinet are provided in combination with the components in the above air conditioning device, and the working process of the fresh air cabinet is further described, as follows:

[0064] The main components of the fresh air cabinet are: the first volute, the second volute, the partition assembly, the first motor assembly, the second motor assembly, the windshield (the first damper and the second damper), the first heat exchanger, the second heat exchanger, the fresh air assembly and other components. Each motor assembly includes: a motor mounting plate, a motor, and a centrifugal fan blade; the air duct in this embodiment adopts a ducted air duct, which cooperates with the fan assembly to form a double centrifugal ducted air duct. There is a ventilation hole at the upper and lower ends of the air duct, which has different functions according to different working states. The windshield can block the wind in different working states, thereby realizing the functional switching of the ventilation holes. That is: the air inlet and the air outlet are switched. The two motor assemblies are respectively arranged on the first volute and the second volute, and they work independently and do not interfere with each other. The partition is located between the two volutes to separate the shared ventilation channel (common space) in the middle. Fresh air component: installed behind the cabinet, preferably installed at the bottom of the cabinet, wherein the fresh air component includes a fresh air inlet and a fresh air outlet, the fresh air inlet is located outside; the fresh air outlet is connected to the fresh air duct, and the fresh air enters the return air duct through the connection port of the fresh air duct. The connection port of the fresh air component is preferably installed between the two heat exchangers; it can also be installed outside the two heat exchangers, but the heat exchange efficiency is reduced.

[0065] When the fresh air cabinet is in cooling mode, the wind enters from the lower end of the air duct, flows through the lower heat exchanger (second heat exchanger), the second fan, the upper heat exchanger (first heat exchanger), and then flows out from the ventilation holes at the upper end. That is, in cooling mode, the lower air outlet is the air inlet, and the upper air outlet is the air outlet. At this time, the upper wind shield is in the state of opening the outlet of the second fan (closing the inlet of the first fan), and the lower wind shield is in the state of closing the outlet of the first fan (opening the inlet of the second fan). The motor assembly of the first volute is in a non-working state, and the motor assembly of the second volute is in a working state.

[0066] At this time, the fresh air component is turned on, and the fresh air introduced from the outside is exchanged through the upper heat exchanger along the flow direction of the airflow, so that the newly introduced air will not cause a large change in the indoor ambient temperature due to the external ambient temperature.

[0067] When the fresh air cabinet is in heating mode, the air enters from the upper end of the air duct, flows through the upper heat exchanger, the motor assembly, the lower heat exchanger, and then flows out from the ventilation holes at the lower end. That is, in heating mode, the upper ventilation holes are the air inlet, and the lower ventilation holes are the air outlet. At this time, the upper wind shield is in the state of closing the second fan outlet (opening the first fan inlet), and the lower wind shield is in the state of opening the first fan outlet (closing the second fan inlet). The motor assembly of the first volute is in working state, and the motor assembly of the second volute is in non-working state.

[0068] At this time, the fresh air component is turned on, and the fresh air introduced from the outside is exchanged through the lower heat exchanger along the flow direction of the airflow, so that the newly introduced air will not cause a large change in the indoor ambient temperature due to the external ambient temperature.

[0069] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. An air conditioning device, characterized in that: It includes a return air duct, a fresh air duct, a heat exchange component, a damper component and an air supply device, wherein: The return air duct extends along the height direction of the air conditioning device, and is provided with an upper air outlet at its upper end and a lower air outlet at its lower end, and the upper air outlet and the lower air outlet can be switched to be an air inlet and an air outlet; The return air duct includes a first main air duct connected to the upper air outlet, a second main air duct connected to the lower air outlet, and a first sub-air duct and a second sub-air duct extending between the first main air duct and the second main air duct; The heat exchange assembly comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is arranged in the first main air duct, and the second heat exchanger is arranged in the second main air duct; The air supply device comprises a first fan and a second fan, wherein the first fan is arranged in the first sub-air duct, and is used to supply air from the upper air port through the first main air duct and the first sub-air duct to the lower air port when the air conditioning equipment is performing heating; the second fan is arranged in the second sub-air duct, and is used to supply air from the lower air port through the second main air duct and the second sub-air duct to the upper air port when the air conditioning equipment is performing cooling; The damper assembly includes a first damper and a second damper, wherein the first damper is arranged in the first main air duct and is on a side of the first heat exchanger away from the upper air outlet, so as to control the communication between the first main air duct and the first sub-air duct or the second sub-air duct; the second damper is arranged in the second main air duct and is on a side of the second heat exchanger away from the lower air outlet, so as to control the communication between the second main air duct and the first sub-air duct or the second sub-air duct; the first heat exchanger is arranged between the first damper and the upper air outlet; the second heat exchanger is arranged between the second damper and the lower air outlet; The fresh air duct is connected to the return air duct, and its connection port is located between the first heat exchanger and the second heat exchanger; The air conditioning device further comprises a partition assembly, which cooperates with the first fan and the second fan to separate the first sub-duct and the second sub-duct in the return air duct; The partition assembly includes an upper partition, a middle partition and a lower partition connected in sequence, The upper partition is arranged in the first main air duct, and is used to separate the lower section of the first main air duct into the upper section of the first sub-air duct and the upper section of the second sub-air duct; The middle partition is used to separate the inlet of the first fan and the inlet of the second fan between the first fan and the second fan; The lower partition plate is arranged in the second main air duct, and is used to separate the upper section of the second main air duct into the lower section of the first sub-air duct and the lower section of the second sub-air duct.

2. The air conditioning device according to claim 1, characterized in that: The upper section of the first sub-duct, the inlet of the first fan, the outlet of the first fan and the lower section of the first sub-duct are connected in sequence; the lower section of the second sub-duct, the inlet of the second fan, the outlet of the second fan and the upper section of the second sub-duct are connected in sequence.

3. The air conditioning equipment according to claim 1, characterized in that: The first fan includes a first volute and a first motor assembly disposed in the first volute, wherein: an inlet of the first volute is communicated with an upper section of the first sub-air duct; an outlet of the first volute is communicated with a lower section of the first sub-air duct, The second fan includes a second volute and a second motor assembly arranged in the first volute, wherein: the inlet of the second volute is connected to the lower section of the second sub-air duct; the outlet of the second volute is connected to the upper section of the second sub-air duct.

4. The air conditioning equipment according to claim 1, characterized in that: The first damper is arranged at the upper end of the upper partition plate; the second damper is arranged at the lower end of the lower partition plate.

5. The air conditioning equipment according to claim 1, characterized in that: The connection port of the fresh air duct is located between the second air door and the second heat exchanger.

6. The air conditioning device according to any one of claims 1 to 5, characterized in that: The air conditioning device further comprises a control unit, which is electrically connected to the heat exchange assembly, the damper assembly and the air supply device respectively. When the air conditioning equipment is heating, the control unit controls the operation of the heat exchange component, starts the first fan in the air supply device, and controls the damper component to close the second sub-air duct; when the air conditioning equipment is cooling, the control unit controls the operation of the heat exchange component, starts the second fan in the air supply device, and controls the damper component to close the first sub-air duct.

7. The air conditioning device according to claim 6, characterized in that: The air conditioning equipment also includes a fresh air component, which includes a fresh air inlet and a fresh air outlet, wherein the fresh air inlet is located on the outdoor side; the fresh air outlet is connected to the fresh air duct.

8. The air conditioning equipment according to claim 7, characterized in that: The control unit is also electrically connected to the fresh air component, wherein: when the air conditioning device operates in a fresh air exchange mode, the control unit controls the fresh air component to deliver fresh air into the room through the return air duct.

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