Cabinet air conditioner

Abstract

The invention provides a cabinet air conditioner, and belongs to the field of air conditioners. A first ventilation opening and a third ventilation opening are formed in the upper portion of the machine shell, and a second ventilation opening and a fourth ventilation opening are formed in the lower portion of the machine shell; a machine body shell channel is defined between the exterior of the air channel component and the machine shell, and an upper air outlet channel, a centrifugal air channel and a lower air outlet channel are formed in the air channel component; the air conditioner further comprises a centrifugal fan, a volute tongue movement mechanism, a heat exchanger assembly, an upper air return opening, a lower air return opening, an upper air blocking structure and a lower air blocking structure. According to the air conditioner with the structure, multiple air outlet modes such as upper air inlet, lower air outlet, lower air inlet and upper air outlet can be achieved during air outlet, and the efficiency of the air conditioner in different air outlet modes can be optimal.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to a floor-standing air conditioner. Background Art

[0002] The structures of the air supply outlet and the air return inlet of traditional air conditioners are relatively fixed. Air can only enter the fixed air duct system through the designated air inlet, complete the circulation of the fixed air flow path, and then achieve the purpose of heating / cooling. The time required to complete heating / cooling in this fixed air flow path is relatively long, and more energy is consumed. However, users' requirements for air conditioners are that the indoor temperature can quickly reach the designated temperature after the air conditioner is turned on. Therefore, traditional air conditioners cannot achieve the best performance in terms of user experience and energy conservation.

[0003] Taking the floor-standing air conditioners with the above-mentioned air supply from top to bottom and air return from top to back as an example, the air supply outlet is at a relatively high position above the air conditioner. When cooling in summer and sending cold air, taking advantage of the characteristic that the cold air flow has a large density and can sink naturally, the air enters the side of the housing through the lower air outlet, and under the action of the fan system, it flows from the air duct to the back side of the housing. The air that has been cooled by the condenser flows from the air duct to the upper air outlet under the action of the fan system and blows out cold air, thereby reducing the indoor temperature. The air needs to pass through the air duct before it can blow through the condenser to complete cooling under the action of the fan system. The air circulation path in the air conditioner is relatively long, and the user experience of the air conditioner for cooling is not good; when heating in winter and sending hot air, due to the principle that hot air floats, the hot jet cannot come down in the upper part of the room, resulting in the phenomenon of hot air in the upper part and cold air in the lower part. At this time, only the return air temperature in the lower part is about 2°C lower than that in the middle and upper parts. Compared with the return air in the middle and upper parts, more energy needs to be consumed to reach the same air outlet temperature, and the energy-saving effect is poor.

[0004] The energy conservation, emission reduction and comfort experience of air conditioners with the above-mentioned fixed air supply and air return structures in different cooling / heating working conditions cannot reach the best at the same time. Therefore, the traditional single air inlet and outlet circulation method cannot balance the energy conservation and comfort requirements of cooling and heating.

[0005] There is an urgent need to realize the transformation of the air inlet and outlet circulation method from a unidirectional cycle to a bidirectional reversible cycle. There are two existing implementation methods for reversible air supply air conditioners. One is to set a reversible axial flow fan and control the forward and reverse rotation of the motor of the axial flow fan to achieve reversible air supply. This method has high requirements for the manufacturing cost of the motor, and there are problems such as short air supply distance and small air volume for the axial flow fan; the other is to set a mixed flow fan and achieve reversible air supply through the mixed flow fan blades. This method has a high fan rotation speed, large noise, low work efficiency, and the energy-saving effect does not meet the requirements. Both of the above methods have problems such as large noise and small air volume, resulting in the inability to meet the requirements of energy conservation and comfort of the air conditioner and the inability to realize productization. Summary of the Invention

[0006] To overcome the problem that the single inlet and outlet air circulation mode of existing air conditioners cannot balance the energy saving and comfort requirements of refrigeration and heating, the embodiment of the present invention proposes a control method for reversible air flow organization of supply and return air, which solves the problem that the temperature distribution is uneven in a certain working condition due to the fixed supply and return air positions in the current air conditioning system, and the energy saving and comfort experience of the air conditioner in different working conditions cannot reach the best at the same time.

[0007] The cabinet air conditioner proposed by the embodiment of the present invention includes:

[0008] A housing, with a first ventilation opening and a third ventilation opening provided at the upper part of the housing, and a second ventilation opening and a fourth ventilation opening provided at the lower part of the housing;

[0009] An air duct component, which is arranged inside the housing. A body housing passage is defined between the outside of the air duct component and the housing. An upper air duct, a centrifugal air duct, and a lower air duct are arranged in sequence from top to bottom inside. The upper air duct communicates with the first ventilation opening, the lower air duct communicates with the second ventilation opening, the upper part of the body housing passage communicates with the third ventilation opening, and the lower part communicates with the fourth ventilation opening;

[0010] A centrifugal fan, which is arranged in the centrifugal air duct. The axial direction of the centrifugal fan has an air inlet communicating with the body housing passage, and the circumferential direction has a volute tongue movement mechanism that can slide circumferentially in the centrifugal air duct around a preset rotation axis. The volute tongue movement mechanism has a first working position, a second working position, and a third working position on its circumferential sliding track. The volute tongue movement mechanism is designed such that when the volute tongue movement mechanism slides to the first working position, the centrifugal air duct can communicate with the upper air duct and be shut off from the lower air duct; when the volute tongue movement mechanism slides to the second working position, the centrifugal air duct can be shut off from the upper air duct and communicate with the lower air duct; when the volute tongue movement mechanism slides to the third working position, the centrifugal air duct can communicate with both the upper air duct and the lower air duct;

[0011] A heat exchanger assembly, which is arranged in the body housing passage and opposite to the axial air inlet of the centrifugal fan, and is used for heat exchange of the air flow before entering the centrifugal fan;

[0012] An upper return air opening communicating the body housing passage with the upper air duct is provided on the air duct wall of the upper air duct, and a lower return air opening communicating the body housing passage with the lower air duct is provided on the air duct wall of the lower air duct. An upper wind blocking structure is provided at the position of the upper return air opening, and a lower wind blocking structure is provided at the position of the lower return air opening. The upper wind blocking structure can shut off the connection between the upper air duct and the centrifugal air duct while opening the upper return air opening, and connect the upper air duct and the centrifugal air duct while closing the upper return air opening. The lower wind blocking structure can shut off the connection between the lower air duct and the centrifugal air duct while opening the lower return air opening, and connect the lower air duct and the centrifugal air duct while closing the lower return air opening;

[0013] The upper edge of the heat exchanger assembly is spaced apart from the third ventilation opening in the height direction of the casing, and the upper edge of the heat exchanger assembly is higher than the upper edge of the upper return air opening. The lower edge of the heat exchanger assembly is spaced apart from the fourth ventilation opening in the height direction of the casing, and the lower edge of the heat exchanger assembly is lower than the lower edge of the lower return air opening.

[0014] In the above technical solution, the air duct component includes a main air duct component, an upper air duct component and a lower air duct component connected to the upper and lower ends of the main air duct component;

[0015] A part of the upper air outlet duct is formed in the main air duct component, and another part is formed in the upper air duct component;

[0016] A part of the lower air outlet duct is formed in the main air duct component, and another part is formed in the lower air duct component;

[0017] Wherein the upper return air opening is formed on the air duct wall of the main air duct component where a part of the upper air outlet duct is formed, and the lower return air opening is formed on the air duct wall of the main air duct component where a part of the lower air outlet duct is formed.

[0018] In the above technical solution, the upper edge of the heat exchanger assembly is flush with the connection position of the main air duct component and the upper air duct component;

[0019] The lower edge of the heat exchanger assembly is higher than the connection position of the main air duct component and the lower air duct component.

[0020] In the above technical solution, the heat exchanger assembly is a V-shaped heat exchanger with an opening facing the side of the inlet of the centrifugal fan. The V-shaped heat exchanger includes a first heat exchange part extending obliquely downward from the upper end and a second heat exchange part extending obliquely upward from the lower end;

[0021] An upper heat exchange area in a gradually narrowing form from top to bottom is defined between the first heat exchange part and the casing, and a lower heat exchange area in a gradually narrowing form from bottom to top is defined between the second heat exchange part and the casing;

[0022] Wherein the lower region of the upper heat exchange area faces the inlet of the centrifugal fan, and the upper region of the lower heat exchange area faces the inlet of the centrifugal fan.

[0023] In the above technical solution, the connection position of the first heat exchange part and the second heat exchange part is opposite to the axis position of the centrifugal fan.

[0024] In the above technical solution, the casing has a front side facing the user side and a rear side facing away from the user side;

[0025] One end of the centrifugal fan in its axial direction faces the front side of the casing, and the other end faces the rear side of the casing. An air inlet is provided on the side of the centrifugal fan facing the rear side of the casing in the axial direction, and a set of heat exchanger assemblies is provided opposite to the air inlet of the centrifugal fan.

[0026] In the above technical solution, the air duct component has a first air duct wall and a second air duct wall that are opposite in the axial direction of the centrifugal fan, and a third air duct wall and a fourth air duct wall that are between the first air duct wall and the second air duct wall. The first air duct wall, the third air duct wall, the second air duct wall, and the fourth air duct wall are sequentially connected to enclose the outer contour of the air duct component;

[0027] Wherein, the upper air return opening is provided on the third air duct wall or the fourth air duct wall, and the lower air return opening is provided on the third air duct wall or the fourth air duct wall.

[0028] In the above technical solution, one of the third air duct wall and the fourth air duct wall is provided with the upper air return opening, and the other is provided with the lower air return opening.

[0029] In the above technical solution, the cabinet air conditioner includes a single upper air outlet cooling mode, a single lower air outlet heating mode, and a cooling / heating upper and lower air outlet mode;

[0030] When the cabinet air conditioner operates in the single upper air outlet cooling mode, the upper wind blocking structure is controlled to rotate to close the upper air return opening, and the volute tongue movement mechanism slides to the first working position. At this time, the centrifugal air duct is communicated with the upper air outlet duct to blow air upward, and the lower wind blocking structure is controlled to rotate to open the lower air return opening. At this time, the centrifugal air duct is not communicated with the lower air outlet duct, and the lower air outlet duct is communicated with the fuselage shell channel. When the centrifugal fan operates, the air flow entering through the second ventilation opening and the fourth ventilation opening is mixed in the fuselage shell channel and then sequentially passes through the heat exchanger assembly, the centrifugal air duct, and the upper air outlet duct and is discharged from the first ventilation opening. The air flow entering the fuselage shell channel through the third ventilation opening sequentially passes through the heat exchanger assembly, the centrifugal air duct, and the upper air outlet duct and is discharged from the first ventilation opening;

[0031] When the cabinet air conditioner operates in the single lower air outlet heating mode, the upper wind blocking structure is controlled to rotate to open the upper air return opening, and the volute tongue movement mechanism slides to the second working position. At this time, the centrifugal air duct is communicated with the lower air outlet duct to blow air downward, and the lower wind blocking structure is controlled to rotate to close the lower air return opening. At this time, the centrifugal air duct is communicated with the lower air outlet duct, and the lower air outlet duct is not communicated with the fuselage shell channel. When the centrifugal fan operates, the air flow entering through the first ventilation opening and the third ventilation opening is mixed in the fuselage shell channel and then sequentially passes through the heat exchanger assembly, the centrifugal air duct, and the lower air outlet duct and is discharged from the second ventilation opening. The air flow entering the fuselage shell channel through the fourth ventilation opening sequentially passes through the heat exchanger assembly, the centrifugal air duct, and the lower air outlet duct and is discharged from the second ventilation opening;

[0032] When the cabinet air conditioner operates in the upper and lower air outlet mode for cooling / heating, the upper air deflector structure is controlled to rotate to close the upper air return opening, the lower air deflector structure is controlled to rotate to close the lower air return opening, and the scroll tongue movement mechanism slides to the third working position. At this time, the centrifugal air duct is connected to both the upper air outlet duct and the lower air outlet duct. When the centrifugal fan operates, the air flow entering the fuselage shell channel through the third vent and the fourth vent is mixed after heat exchange through the heat exchanger assembly and enters the centrifugal air duct. A part of the air flow is discharged from the first vent after passing through the upper air outlet duct, and the other part of the air flow is discharged from the second vent after passing through the lower air outlet duct.

[0033] In the above technical solution, the casing includes:

[0034] The front panel and the rear shell are butt-jointed and installed front and back, and a receiving space for installing the air duct component and the heat exchanger assembly is formed between the butt-jointed front panel and the rear shell;

[0035] The cabinet air conditioner further includes:

[0036] The base, and the butt-jointed front panel and the rear shell are located on the base;

[0037] Among them, a first vent with an upward opening is defined between the upper parts of the butt-jointed front panel and the rear shell, a second vent with a forward opening is defined between the lower part of the front panel and the upper part of the base, a third vent is provided in the upper part of the rear shell, and a fourth vent with a backward opening is defined between the lower part of the rear shell and the upper part of the base.

[0038] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0039] The embodiment of the present invention proposes a method for controlling the reversible air flow organization of air supply and return, which solves the problem that the temperature distribution is uneven in a certain working condition due to the fixed air supply and return positions in the current air conditioning system, and the energy saving and comfort experience of the air conditioner in different working conditions cannot reach the best at the same time. Brief Description of the Drawings

[0040] The drawings here are incorporated into the specification and constitute a part of this specification, showing the embodiments in line with the present invention, and are used together with the specification to explain the principles of the present invention.

[0041] Figure 1 It is an axonometric structure schematic diagram of an embodiment of the cabinet air conditioner of the present invention;

[0042] Figure 2 It is an exploded structure schematic diagram of an embodiment of the cabinet air conditioner of the present invention;

[0043] Figure 3 It is a cross-sectional structure schematic diagram of an embodiment of the cabinet air conditioner of the present invention, and the first air return opening and the second air return opening in the figure are in a closed state;

[0044] Figure 4 This is a schematic cross-sectional structure diagram of an embodiment of the cabinet air conditioner of the present invention. In the figure, the first air return opening is in a closed state, the second air return opening is in an open state, and the air conditioner blows air upward.

[0045] Figure 5 For Figure 4 This is a schematic cross-sectional structure diagram of the embodiment from another perspective;

[0046] Figure 6 This is a schematic cross-sectional structure diagram of an embodiment of the cabinet air conditioner of the present invention. In the figure, the first air return opening is in an open state, the second air return opening is in a closed state, and the air conditioner blows air downward.

[0047] Figure 7 For Figure 6 This is a schematic cross-sectional structure diagram of the embodiment from another perspective;

[0048] Figure 8 This is a three-dimensional structure diagram of the heat exchanger assembly in an embodiment of the cabinet air conditioner of the present invention;

[0049] Figure 9 This is a side view structure diagram of the heat exchanger assembly in an embodiment of the cabinet air conditioner of the present invention.

[0050] Wherein:

[0051] 1 - Cabinet; 1a - Front panel; 1b - Rear shell; 1c - Base; 11 - First ventilation opening; 12 - Second ventilation opening; 13 - Third ventilation opening; 14 - Fourth ventilation opening;

[0052] 2 - Air duct component; 2a - Main air duct component; 2b - Upper air duct component; 2c - Lower air duct component 21 - Upper air outlet duct; 211 - Upper air return opening; 212 - Upper wind blocking structure; 22 - Centrifugal air duct; 23 - Lower air outlet duct; 231 - Lower air return opening; 232 - Lower wind blocking structure;

[0053] 3 - Centrifugal fan; 31 - Scroll tongue movement mechanism;

[0054] 4 - Heat exchanger assembly; 41 - First heat exchange part; 42 - Second heat exchange part; 43 - Upper heat exchange area; 44 - Lower heat exchange area;

[0055] 5 - Body housing channel. Detailed implementation manners

[0056] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0057] Currently, the air conditioners in the prior art using a single inlet and outlet air circulation mode cannot balance the problems of energy saving in refrigeration and heating and comfort requirements. The embodiments of the present invention propose a method for controlling the reversible air flow organization of supply and return air to solve the problem that in the current air conditioning system, due to the fixed positions of the supply and return air, the temperature distribution is uneven under a certain working condition, and the energy saving and comfort experience of the air conditioner under different working conditions cannot reach the best at the same time.

[0058] The following will Figure 1 - be Figure 9 elaborate in detail on the technical solutions of this embodiment. Without conflict, the following embodiments and examples can be combined with each other.

[0059] Embodiment

[0060] As Figures 1 - 9 shown, this embodiment proposes a cabinet air conditioner, which includes:

[0061] A housing 1, with a first ventilation opening 11 and a third ventilation opening 13 provided at the upper part of the housing 1, and a second ventilation opening 12 and a fourth ventilation opening 14 provided at the lower part of the housing 1;

[0062] An air duct component 2, which is arranged inside the housing 1. A body housing passage 5 is defined between the outside of the air duct component 2 and the housing 1, and an upper air duct 21, a centrifugal air duct 22, and a lower air duct 23 are arranged in sequence from top to bottom inside. The upper air duct 21 communicates with the first ventilation opening 11, the lower air duct 23 communicates with the second ventilation opening 12, the upper part of the body housing passage 5 communicates with the third ventilation opening 13, and the lower part communicates with the fourth ventilation opening 14;

[0063] The centrifugal fan 3 is disposed in the centrifugal air duct 22. The axial direction of the centrifugal fan 3 has an air inlet communicating with the fuselage housing passage 5, and the circumferential direction thereof has a volute tongue movement mechanism 31 capable of circumferentially sliding in the centrifugal air duct 22 around a preset rotation axis of the centrifugal air duct 22. The volute tongue movement mechanism 3 has a first working position, a second working position, and a third working position on its circumferential sliding trajectory. The volute tongue movement mechanism 31 is designed such that when the volute tongue movement mechanism 31 slides to the first working position, the centrifugal air duct 22 can communicate with the upper air outlet duct 21 and cut off the connection with the lower air outlet duct 23; when the volute tongue movement mechanism 31 slides to the second working position, the centrifugal air duct 22 can cut off the connection with the upper air outlet duct 21 and communicate with the lower air outlet duct 23; when the volute tongue movement mechanism 31 slides to the third working position, the centrifugal air duct 22 can communicate with both the upper air outlet duct 21 and the lower air outlet duct 23;

[0064] The heat exchanger assembly 4 is disposed in the fuselage housing passage 5 and is opposite to the axial air inlet of the centrifugal fan 3, and is used for heat-exchanging the air flow before entering the centrifugal fan 3;

[0065] An upper air return opening 211 communicating the fuselage housing passage 5 with the upper air outlet duct 21 is provided on the air duct wall of the upper air outlet duct 21, and a lower air return opening 231 communicating the fuselage housing passage 5 with the lower air outlet duct 23 is provided on the air duct wall of the lower air outlet duct 23. An upper wind blocking structure 212 is provided at the position of the upper air return opening 211, and a lower wind blocking structure 232 is provided at the position of the lower air return opening 231. The upper wind blocking structure 231 can cut off the connection between the upper air outlet duct 21 and the centrifugal air duct 22 while opening the upper air return opening 231, and can connect the upper air outlet duct 21 and the centrifugal air duct 22 while closing the upper air return opening 211. The lower wind blocking structure 232 can cut off the connection between the lower air outlet duct 23 and the centrifugal air duct 22 while opening the lower air return opening 231, and can connect the lower air outlet duct 23 and the centrifugal air duct 22 while closing the lower air return opening 231;

[0066] Wherein, there is a distance between the upper edge of the heat exchanger assembly 4 and the third ventilation opening 13 in the height direction of the cabinet, and the upper edge of the heat exchanger assembly 4 is higher than the upper edge of the upper air return opening 211. There is a distance between the lower edge of the heat exchanger assembly 4 and the fourth ventilation opening 14 in the height direction of the cabinet, and the lower edge of the heat exchanger assembly 4 is lower than the lower edge of the lower air return opening 231.

[0067] Through the improvement of the above structure, the cabinet air conditioner in the embodiment of the present invention can execute a single upper air outlet cooling mode, a single lower air outlet heating mode, and a cooling / heating upper and lower air outlet mode;

[0068] Such as Figure 4 and Figure 5 As shown, when the cabinet air conditioner operates in the single upper air outlet cooling mode, the upper wind blocking structure is controlled to rotate to close the upper air return opening, and the volute tongue movement mechanism slides to the first working position {i.e. Figure 5In the position, the profile line of the upper air outlet channel 21 is adjusted to the optimal profile line to increase the upper air outlet air volume and reduce the noise. At this time, the centrifugal air duct is connected to the upper air outlet duct to blow air upward, and the lower wind shielding structure is controlled to rotate to open the lower air return port. At this time, the centrifugal air duct is not connected to the lower air outlet duct, and the lower air outlet duct is connected to the fuselage shell channel. When the centrifugal fan operates, the air flow entering through the second ventilation port and the fourth ventilation port is mixed in the fuselage shell channel and then passes through the heat exchanger assembly, the centrifugal air duct, and the upper air outlet duct in sequence and is discharged from the first ventilation port. The air flow entering the fuselage shell channel through the third ventilation port passes through the heat exchanger assembly, the centrifugal air duct, and the upper air outlet duct in sequence and is discharged from the first ventilation port. That is, in the cooling mode, a part of the indoor air flows from the second ventilation port 12 at the bottom of the air conditioner to the shell cavity near the evaporator side through the lower air return port 231, exchanges heat through the evaporator, and is blown out from the first ventilation port 12 at the top of the air conditioner through the upper air outlet duct 21 under the action of the fan system. Another part of the air enters the shell cavity through the third ventilation port 13 at the top of the air conditioner and the fourth ventilation port 14 at the bottom of the air conditioner, exchanges heat through the evaporator, and is blown out from the first ventilation port 11 at the top of the air conditioner through the upper air outlet duct 211 under the action of the fan system. Since the cold air has a higher density after heat exchange, it will automatically deposit and drop after entering the room from the first ventilation port 11 at the top of the air conditioner, improving the temperature uniformity and cooling rate of the entire room.

[0069] As Figure 6 and Figure 7 shown, when the floor-standing air conditioner operates in the single lower air outlet heating mode, the upper wind shielding structure is controlled to rotate to open the upper air return port, and the volute tongue movement mechanism slides to the second working position {i.e. Figure 7In the position, the type line of the lower air outlet channel 23 is adjusted to the optimal type line to increase the lower air outlet air volume and reduce the noise. At this time, the centrifugal air duct is connected to the lower air outlet duct to blow air downward, and the lower wind blocking structure is controlled to rotate to close the lower air return opening. At this time, the centrifugal air duct is connected to the lower air outlet duct, and the lower air outlet duct is not connected to the fuselage shell channel. When the centrifugal fan operates, the air flow entering through the first air vent and the third air vent is mixed in the fuselage shell channel and then passes through the heat exchanger assembly, the centrifugal air duct and the lower air outlet duct in sequence and is discharged from the second air vent. The air flow entering the fuselage shell channel through the fourth air vent passes through the heat exchanger assembly, the centrifugal air duct and the lower air outlet duct in sequence and is discharged from the second air vent. That is, in the heating mode, a part of the indoor air enters the fuselage shell channel through the upper air return opening 211 of the first air vent 12 at the top of the air conditioner, exchanges heat through the evaporator, and is blown out from the second air vent at the bottom of the air conditioner through the lower air outlet duct 23 under the action of the fan system. Another part of the air enters the fuselage shell channel through the third air vent 13 at the top of the air conditioner and the fourth air vent 14 at the bottom of the air conditioner, exchanges heat through the evaporator, and passes through the lower air outlet duct 23 under the action of the fan system and is discharged from the second air vent 12 at the bottom of the air conditioner. After heat exchange, the density of the hot air is small, and the air flow will automatically rise after entering the room from the air outlet at the bottom of the air conditioner, improving the temperature uniformity and heating rate of the entire room.

[0070] When the cabinet air conditioner operates in the cooling / heating upper and lower air outlet mode, the upper wind blocking structure is controlled to rotate to close the upper air return opening, and the lower wind blocking structure is controlled to rotate to close the lower air return opening. The tongue movement mechanism slides to the third working position. At this time, the centrifugal air duct is connected to both the upper air outlet duct and the lower air outlet duct. When the centrifugal fan operates, the air flow entering the fuselage shell channel through the third air vent and the fourth air vent is mixed after heat exchange through the heat exchanger assembly and enters the centrifugal air duct. A part of the air flow is discharged from the first air vent after passing through the upper air outlet duct, and another part of the air flow is discharged from the second air vent after passing through the lower air outlet duct.

[0071] That is, the air conditioner in the embodiment of the present invention fully considers the stratification phenomenon of hot air flow and cold air flow during design, thereby realizing reversible air outlet of the air conditioner by changing the structure of the air conditioner, and improving the working efficiency of the air conditioner.

[0072] In any of the above embodiments, as Figure 2 and Figure 3 shown, the duct component 2 includes a main duct component 2a and an upper duct component 2b and a lower duct component 2c connected to the upper and lower ends of the main duct component 2a;

[0073] A part of the upper air outlet duct 21 is formed in the main duct component 2a, and another part is formed in the upper duct component 2b;

[0074] A part of the lower air outlet duct 23 is formed in the main duct component 2a, and another part is formed in the lower duct component 2c;

[0075] Among them, the upper air return opening 211 is opened on the air duct wall of the main air duct component 2a where a partial upper air outlet duct 21 is formed, and the lower air return opening 231 is opened on the air duct wall of the main air duct component 2a where a partial lower air outlet duct 23 is formed.

[0076] Furthermore, as Figure 2 shown, the upper edge of the heat exchanger assembly 4 is flush with the connection position of the main air duct component 2a and the upper air duct component 2b;

[0077] The lower edge of the heat exchanger assembly 4 is higher than the connection position of the main air duct component 2a and the lower air duct component 2c.

[0078] As Figures 2 - 9 shown, the heat exchanger assembly 4 is a V-shaped heat exchanger with an opening facing the side of the air inlet of the centrifugal fan 3. The V-shaped heat exchanger includes a first heat exchange part 41 extending obliquely downward from the upper end and a second heat exchange part 42 extending obliquely upward from the lower end;

[0079] A gradually narrowing upper heat exchange area 43 is defined between the first heat exchange part 41 and the housing 1 from top to bottom, and a gradually narrowing lower heat exchange area 44 is defined between the second heat exchange part 42 and the housing 1 from bottom to top;

[0080] Among them, the lower region of the upper heat exchange area 43 faces the air inlet of the centrifugal fan 3, and the upper region of the lower heat exchange area 44 faces the air inlet of the centrifugal fan 3.

[0081] In the embodiment of the present invention, by obliquely arranging the heat exchanger assembly in the housing 1, on the one hand, the obliquely arranged heat exchanger assembly can increase the heat exchange area with the air flow, and on the other hand, the gradually narrowing heat exchange area formed between the obliquely arranged heat exchanger assembly and the housing can increase the air pressure, thereby increasing the air outlet speed of the air conditioner.

[0082] Preferably, as Figures 2 - 7 shown, the connection position of the first heat exchange part 41 and the second heat exchange part 42 is opposite to the axis position of the centrifugal fan 3.

[0083] In any of the above embodiments, as Figures 3 - 7 shown, the housing 1 has a front side facing the user side and a rear side facing away from the user side;

[0084] One end of the centrifugal fan 3 in its axial direction faces the front side of the housing 1 and the other end faces the rear side of the housing 1, where the air inlet of the centrifugal fan 3 faces the rear side of the housing 1, and a group of heat exchanger assemblies 4 are provided and are opposite to the air inlet of the centrifugal fan 3.

[0085] In the embodiment of the present invention, by making one axial side of the centrifugal fan 3 opposite to the front side of the housing, the thickness of the air conditioner in the front-rear direction can be made thinner.

[0086] In any of the above embodiments, as Figures 3 - 7 shown, the air duct component 2 has a first air duct wall and a second air duct wall that are opposite in the axial direction of the centrifugal fan 3, and a third air duct wall and a fourth air duct wall between the first air duct wall and the second air duct wall. The first air duct wall, the third air duct wall, the second air duct wall, and the fourth air duct wall are sequentially connected to enclose the outer contour of the air duct component;

[0087] wherein the upper air return opening 211 is provided on the third air duct wall or the fourth air duct wall, and the lower air return opening 231 is provided on the third air duct wall or the fourth air duct wall.

[0088] Preferably, the upper air return opening 211 is provided on one of the third air duct wall and the fourth air duct wall, and the lower air return opening 231 is provided on the other.

[0089] In any of the above embodiments, as Figure 2 shown, the housing 1 includes:

[0090] A front panel 1a and a rear shell 1b that are butt-jointed and installed. A receiving space for installing the air duct component 2 and the heat exchanger assembly 4 is formed between the butt-jointed front panel 1a and the rear shell 1b;

[0091] The cabinet air conditioner further includes:

[0092] A base 1c, and the butt-jointed front panel 1a and the rear shell 1b are located on the base 1c;

[0093] wherein a first ventilation opening 11 with an upward opening is defined between the upper parts of the butt-jointed front panel 1a and the rear shell 1b, a second ventilation opening 12 with a forward opening is defined between the lower part of the front panel 1a and the upper part of the base 1c, a third ventilation opening 13 is provided on the upper part of the rear shell 1b, and a fourth ventilation opening 14 with a rearward opening is defined between the lower part of the rear shell 1b and the upper part of the base 1c.

[0094] Those skilled in the art will readily conceive of 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 known common knowledge or conventional technical means in the technical field not disclosed by the present invention. The specification and examples are only considered exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0095] It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A cabinet air conditioner, characterized in that, The cabinet air conditioner includes: A housing (1), with a first ventilation opening (11) and a third ventilation opening (13) provided at the upper part of the housing (1), and a second ventilation opening (12) and a fourth ventilation opening (14) provided at the lower part of the housing (1); An air duct component (2), which is arranged inside the housing (1). A body housing passage (5) is defined between the outside of the air duct component (2) and the housing (1). An upper air outlet duct (21), a centrifugal air duct (22), and a lower air outlet duct (23) are arranged in sequence from top to bottom inside the air duct component (2). The upper air outlet duct (21) communicates with the first ventilation opening (11), the lower air outlet duct (23) communicates with the second ventilation opening (12), the upper part of the body housing passage (5) communicates with the third ventilation opening (13), and the lower part of the body housing passage (5) communicates with the fourth ventilation opening (14); A centrifugal fan (3), which is arranged in the centrifugal air duct (22). The axial direction of the centrifugal fan (3) has an air inlet communicating with the body housing passage (5), and the circumferential direction has a scroll tongue movement mechanism (31) that can circumferentially slide in the centrifugal air duct (22) around a preset rotation axis of the centrifugal air duct (22). The scroll tongue movement mechanism (3) has a first working position, a second working position, and a third working position on its circumferential sliding track. The scroll tongue movement mechanism (31) is designed such that when the scroll tongue movement mechanism (31) slides to the first working position, the centrifugal air duct (22) can communicate with the upper air outlet duct (21) and be shut off from the lower air outlet duct (23); when the scroll tongue movement mechanism (31) slides to the second working position, the centrifugal air duct (22) can be shut off from the upper air outlet duct (21) and communicate with the lower air outlet duct (23); when the scroll tongue movement mechanism (31) slides to the third working position, the centrifugal air duct (22) can communicate with both the upper air outlet duct (21) and the lower air outlet duct (23); A heat exchanger assembly (4), which is arranged in the body housing passage (5) and is opposite to the axial air inlet of the centrifugal fan (3) for heat exchanging the air flow before entering the centrifugal fan (3); An upper air outlet duct (21) is provided with an upper air return opening (211) on its duct wall, which connects the body housing passage (5) and the upper air outlet duct (21). A lower air outlet duct (23) is provided with a lower air return opening (231) on its duct wall, which connects the body housing passage (5) and the lower air outlet duct (23). An upper wind blocking structure (212) is provided at the position of the upper air return opening (211), and a lower wind blocking structure (232) is provided at the position of the lower air return opening (231). The upper wind blocking structure (231) can cut off the connection between the upper air outlet duct (21) and the centrifugal air duct (22) while opening the upper air return opening (231), and connect the upper air outlet duct (21) and the centrifugal air duct (22) while closing the upper air return opening (211). The lower wind blocking structure (232) can cut off the connection between the lower air outlet duct (23) and the centrifugal air duct (22) while opening the lower air return opening (231), and connect the lower air outlet duct (23) and the centrifugal air duct (22) while closing the lower air return opening (231); Wherein, the upper edge of the heat exchanger assembly (4) is spaced apart from the third ventilation opening (13) in the height direction of the casing, and the upper edge of the heat exchanger assembly (4) is higher than the upper edge of the upper air return opening (211). The lower edge of the heat exchanger assembly (4) is spaced apart from the fourth ventilation opening (14) in the height direction of the casing, and the lower edge of the heat exchanger assembly (4) is lower than the lower edge of the lower air return opening (231).

2. The cabinet air conditioner according to claim 1, wherein The air duct component (2) includes a main air duct component (2a), an upper air duct component (2b) and a lower air duct component (2c) connected to the upper and lower ends of the main air duct component (2a); A part of the upper air outlet duct (21) is formed in the main air duct component (2a), and another part is formed in the upper air duct component (2b); A part of the lower air outlet duct (23) is formed in the main air duct component (2a), and another part is formed in the lower air duct component (2c); Wherein, the upper air return opening (211) is opened on the duct wall of the main air duct component (2a) where a part of the upper air outlet duct (21) is formed, and the lower air return opening (231) is opened on the duct wall of the main air duct component (2a) where a part of the lower air outlet duct (23) is formed.

3. The cabinet air conditioner according to claim 2, wherein The upper edge of the heat exchanger assembly (4) is flush with the connection position of the main air duct component (2a) and the upper air duct component (2b); The lower edge of the heat exchanger assembly (4) is higher than the connection position of the main air duct component (2a) and the lower air duct component (2c).

4. The cabinet air conditioner according to claim 2, wherein The heat exchanger assembly (4) is a V-shaped heat exchanger with an opening facing the inlet side of the centrifugal fan (3). The V-shaped heat exchanger includes a first heat exchange part (41) extending obliquely from the upper end to the lower end, and a second heat exchange part (42) extending obliquely from the lower end to the upper end; An upper heat exchange area (43) in a gradually shrinking form from top to bottom is defined between the first heat exchange part (41) and the casing (1), and a lower heat exchange area (44) in a gradually expanding form from bottom to top is defined between the second heat exchange part (42) and the casing (1); The lower region of the upper heat exchange area (43) faces the air inlet of the centrifugal fan (3), and the upper region of the lower heat exchange area (44) faces the air inlet of the centrifugal fan (3).

5. The cabinet air conditioner according to claim 4, characterized in that The connection position of the first heat exchange part (41) and the second heat exchange part (42) faces the axis position of the centrifugal fan (3).

6. The cabinet air conditioner according to any one of claims 1-5, characterized in that, The casing (1) has a front side facing the user end and a rear side facing away from the user end; One end of the centrifugal fan (3) in its axial direction faces the front side of the casing (1), and the other end faces the rear side of the casing (1). The air inlet is provided on the side of the centrifugal fan (3) facing the rear side of the casing (1) in the axial direction. There is a set of heat exchanger assemblies (4) facing the air inlet of the centrifugal fan (3).

7. The cabinet air conditioner according to any one of claims 1-5, characterized in that, The air duct component (2) has a first air duct wall and a second air duct wall opposite to each other in the axial direction of the centrifugal fan (3), and a third air duct wall and a fourth air duct wall between the first air duct wall and the second air duct wall. The first air duct wall, the third air duct wall, the second air duct wall, and the fourth air duct wall are sequentially connected to enclose the outer contour of the air duct component; The upper air return opening (211) is opened on the third air duct wall or the fourth air duct wall, and the lower air return opening (231) is opened on the third air duct wall or the fourth air duct wall.

8. The cabinet air conditioner according to claim 7, characterized in that, The upper air return opening (211) is provided on one of the third air duct wall and the fourth air duct wall, and the lower air return opening (231) is provided on the other.

9. The cabinet air conditioner according to any one of claims 1-5, characterized in that, The cabinet air conditioner includes a single upper air outlet cooling mode, a single lower air outlet heating mode, and a cooling / heating upper and lower air outlet mode; When the cabinet air conditioner operates in the single upper air outlet cooling mode, the upper wind deflector structure is controlled to rotate to close the upper air return opening, and the volute tongue movement mechanism slides to the first working position. At this time, the centrifugal air duct is communicated with the upper air outlet duct to blow air upward. The lower wind deflector structure is controlled to rotate to open the lower air return opening. At this time, the centrifugal air duct is not communicated with the lower air outlet duct, and the lower air outlet duct is communicated with the fuselage shell channel. When the centrifugal fan operates, the air flow entering through the second ventilation opening and the fourth ventilation opening is mixed in the fuselage shell channel and then passes through the heat exchanger assembly, the centrifugal air duct, and the upper air outlet duct in sequence and is discharged from the first ventilation opening. The air flow entering the fuselage shell channel through the third ventilation opening passes through the heat exchanger assembly, the centrifugal air duct, and the upper air outlet duct in sequence and is discharged from the first ventilation opening; When the floor-standing air conditioner operates in the single-bottom air outlet heating mode, the upper air deflector structure is controlled to rotate to open the upper air return opening, and the volute tongue movement mechanism slides to the second working position. At this time, the centrifugal air duct is communicated with the lower air outlet duct to blow air downward. The lower air deflector structure is controlled to rotate to close the lower air return opening. At this time, the centrifugal air duct is communicated with the lower air outlet duct, and the lower air outlet duct is not communicated with the fuselage housing passage. When the centrifugal fan operates, the air flow entering through the first ventilation opening and the third ventilation opening is mixed in the fuselage housing passage and then passes through the heat exchanger assembly, the centrifugal air duct and the lower air outlet duct in sequence and is discharged from the second ventilation opening. The air flow entering the fuselage housing passage through the fourth ventilation opening passes through the heat exchanger assembly, the centrifugal air duct and the lower air outlet duct in sequence and is discharged from the second ventilation opening; When the floor-standing air conditioner operates in the cooling / heating upper and lower air outlet mode, the upper air deflector structure is controlled to rotate to close the upper air return opening, and the lower air deflector structure is controlled to rotate to close the lower air return opening. The volute tongue movement mechanism slides to the third working position. At this time, the centrifugal air duct is communicated with both the upper air outlet duct and the lower air outlet duct. When the centrifugal fan operates, the air flow entering the fuselage housing passage through the third ventilation opening and the fourth ventilation opening is mixed after heat exchange through the heat exchanger assembly and then enters the centrifugal air duct. A part of the air flow passes through the upper air outlet duct and is discharged from the first ventilation opening, and another part of the air flow passes through the lower air outlet duct and is discharged from the second ventilation opening.

10. The cabinet air conditioner according to claim 1, characterized in that, The casing (1) includes: A front panel (1a) and a rear shell (1b) which are butt-jointed and installed. A receiving space for installing the air duct component (2) and the heat exchanger assembly (4) is formed between the butt-jointed front panel (1a) and rear shell (1b); The floor-standing air conditioner further includes: A base (1c), and the butt-jointed front panel (1a) and rear shell (1b) are located on the base (1c); Wherein, the first ventilation opening (11) with an upward opening is defined between the upper parts of the butt-jointed front panel (1a) and rear shell (1b), the second ventilation opening (12) with a forward opening is defined between the lower part of the front panel (1a) and the upper part of the base (1c), the third ventilation opening (13) is provided on the upper part of the rear shell (1b), and the fourth ventilation opening (14) with a backward opening is defined between the lower part of the rear shell (1b) and the upper part of the base (1c).

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