Up-down air supply air conditioner

Abstract

The air conditioner comprises a fan module, an upper fan module cavity, a lower fan module cavity, a heat exchanger cavity, an upper air opening, a lower air opening, a heat exchanger and a shell, and is characterized in that the upper fan module cavity, the lower fan module cavity, the heat exchanger cavity and the upper fan module cavity are defined by the shell, the upper air opening is formed in the upper portion of the shell, and the lower air opening is formed in the lower portion of the shell. The upper fan module cavity and the upper air opening are formed in the upper portion of the shell, the lower fan module cavity and the lower air opening are formed in the lower portion of the shell, the heat exchanger cavity is formed in the middle of the shell and located between the upper fan module cavity and the upper air opening and between the lower fan module cavity and the lower air opening, the heat exchanger is installed in the heat exchanger cavity, and the fan module is in an inserted movable type and installed in the upper fan module cavity or the lower fan module cavity. The draught fan module comprises a draught fan and a shell, the draught fan is installed in the shell, an air outlet and an air suction opening of the draught fan are communicated with the heat exchanger cavity and are communicated with the upper air opening and the lower air opening, the draught fan is arranged, cold air is supplied to the high position in summer, hot air is supplied to the floor in winter, cost is reduced, and comfort is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of ventilation and air conditioning, and in particular relates to an up-and-down air supply air conditioner. Background Art

[0002] When the existing windless air conditioner delivers cold air in summer, the upper air outlet of the air conditioner delivers air to the upper part of the room to prevent the cold wind from blowing on people, and there is no feeling of cold wind; when delivering hot air in winter, the lower air outlet of the air conditioner delivers air to the floor, and the hot air blows on the legs of the human body, which feels comfortable. However, in order to achieve two-way air supply, the air conditioner has a very complex blower structure and a high cost. Summary of the invention

[0003] The purpose of the present invention is to provide an air conditioner with a very simple blower structure, low cost, and the ability to supply air upward and downward, supplying air to the top of the room in summer and to the floor in winter, and using different air outlet heights to improve human comfort.

[0004] The solution of the present invention is: an air conditioner with up and down air supply, which includes a fan module, an upper fan module cavity, a lower fan module cavity, a heat exchanger cavity, an upper air outlet, a lower air outlet, a heat exchanger, and a shell. The air conditioner is characterized in that the air conditioner is cabinet-type or column-type, the shell surrounds the upper fan module cavity, the lower fan module cavity, and the heat exchanger cavity, the upper fan module cavity and the upper air outlet are installed in the upper part of the shell, the lower fan module cavity and the lower air outlet are installed in the lower part of the shell, the heat exchanger cavity is installed in the middle part of the shell, located between the upper fan module cavity, the upper air outlet and the lower fan module cavity, the lower air outlet, the heat exchanger is installed in the heat exchanger cavity, and the fan module is a plug-in removable Dynamic type, installed in the upper fan module cavity or the lower fan module cavity, the upper air outlet is connected with the upper fan module cavity, and the lower air outlet is connected with the lower fan module cavity. The fan module includes a fan and a shell. The fan is installed in the shell, with a fan outlet and an air intake, and has a slot or connector fixedly connected to the upper fan module cavity or the lower fan module cavity. The fan outlet and the air intake are connected with the heat exchanger cavity, and are connected with the upper air outlet and the lower air outlet. The upper fan module cavity and the lower fan module cavity are equipped with connection sockets for fan power cord and control cord, and have an inlet cover for disassembling and assembling the fan module. The fan adopts a centrifugal fan and an axial flow fan.

[0005] When delivering cold air in the summer, the fan module is installed in the lower fan module cavity, the fan suction port is connected with the lower air port, and the fan outlet is connected with the heat exchanger cavity. The indoor air is sucked into the heat exchanger cavity by the fan, cooled and dehumidified by the heat exchanger, and then sent to the upper fan module cavity. Finally, the air is delivered to the high places in the room through the upper air port. The cold air sticks to the ceiling and blows to the far end of the room, and slowly falls on the human body from high places, without the feeling of blowing cold wind.

[0006] When delivering hot air in winter, the fan module is removed from the lower fan module cavity and installed in the upper fan module cavity. The fan suction port is connected with the upper air port, and the fan outlet is connected with the heat exchanger cavity. The indoor air is sent into the heat exchanger cavity under the suction of the fan, heated by the heat exchanger, and then sent to the lower fan module cavity, and finally delivered to the room floor through the lower air port. The hot air blows on people's legs, providing a good experience.

[0007] Therefore, by installing an ordinary fan, it is possible to send cold air to high places in summer and hot air to the floor in winter, thus reducing costs and ensuring comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a top and bottom air supply air conditioner structure Figure 1 Figure 2 It is a top and bottom air supply air conditioner structure Figure 2 Figure 3 It is a top and bottom air supply air conditioner structure Figure 3 Figure 4 It is a top and bottom air supply air conditioner structure Figure 4 Figure 5 It is a top and bottom air supply air conditioner structure Figure 5 Figure 6 It is a top and bottom air supply air conditioner structure Figure 6 Figure 7 It is a top and bottom air supply air conditioner structure Figure 7 Figure 8 It is a top and bottom air supply air conditioner structure Figure 8 Description of reference numerals: 1. Upper fan module cavity, 2. Heat exchanger cavity, 3. Heat exchanger, 4. Fan module, 5. Lower fan module cavity, 6, 13, 17, 26, Fan, 7, Lower air outlet, 8, Shell, 9, Upper air outlet, 10, Upper air outlet of heat exchanger cavity, 11, Lower air outlet of heat exchanger cavity, 12, 25, Upper air cavity, 14, Axial fan air duct, 15, Rotating shaft, 16, 28, 31, Sealing plate, 18, Air supply outlet, 19, Secondary return air outlet, 20, Secondary return air cavity, 21, Secondary return air cavity outlet, 22, Fresh air duct, 23, 24, Air valve, 27, Lower air cavity, 29, Cold air return air outlet, 30, Hot air return air outlet. DETAILED DESCRIPTION

[0009] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0010] Figure 1 , 2 In the embodiment, the up-and-down air supply air conditioner comprises a fan module 4, an upper fan module cavity 1, a lower fan module cavity 5, a heat exchanger cavity 2, an upper air outlet 9, a lower air outlet 7, a heat exchanger 3, and a shell 8. The air conditioner is characterized in that the air conditioner is cabinet-type or column-type, and the shell 8 surrounds the upper fan module cavity 1, the lower fan module cavity 5, and the heat exchanger cavity 2. The upper fan module cavity 1 and the upper air outlet 9 are installed in the upper part of the shell, the lower fan module cavity 5 and the lower air outlet 7 are installed in the lower part of the shell, and the heat exchanger cavity 2 is installed in the middle part of the shell, located between the upper fan module cavity 1, the upper air outlet 9 and the lower fan module cavity 5 and the lower air outlet 7. The heat exchanger 3 is installed in the heat exchanger cavity 2. The fan module 4 is a plug-in movable type, installed in the upper fan module cavity 1 or the lower fan module cavity 5, and the upper air outlet 9 is connected to the upper fan module cavity 1. The fan module cavity 1 is connected, and the lower air outlet 7 is connected with the lower fan module cavity 5. The fan module 4 includes a fan 6 and a shell. The fan 6 is installed in the shell, with a fan 6 air outlet and air intake, and has a slot or connector fixedly connected to the upper fan module cavity 1 or the lower fan module cavity 5 to ensure the seal between the heat exchanger cavity 2. The fan 6 air outlet and air intake are connected with the heat exchanger cavity 2, and are connected with the upper air outlet 9 and the lower air outlet 7. The upper fan module cavity 1 and the lower fan module cavity 5 are equipped with a connection socket for the fan power line and the control line, and an inlet cover plate for disassembling the fan module 4. The upper air outlet 9 and the lower air outlet 7 can be made into a detachable inlet cover plate. The fan 6 adopts a centrifugal fan and an axial flow fan, and air filters are installed at the lower air outlet 7 and the upper air outlet 9. A condensate pan is installed at the lower part of the heat exchanger 3 and discharged to the outside. The upper air vent 9 and the lower air vent 7 are electrically or manually adjustable. The upper air vent 9 is preferably above two meters in height. The air conditioner can be an indoor unit of a split unit, and the heat exchanger 3 is connected to the refrigerant, or the end of the air conditioning water system, and the heat exchanger 3 is connected to the water-cooled heat medium.

[0011] When delivering cold air in summer, the fan module 4 is installed in the lower fan module cavity 5, the air intake of the fan 6 is connected with the lower air outlet 7, the air outlet of the fan 6 is stuck at the lower air outlet 11 of the heat exchanger cavity, and is connected with the heat exchanger cavity 2. The indoor air is sucked by the fan 6 and sent into the heat exchanger cavity 2 through the lower air outlet 7, the fan 6, and the lower air outlet 11 of the heat exchanger cavity, and is cooled and dehumidified by the heat exchanger 3. Then, it is sent to the upper fan module cavity 1 through the upper air outlet 10 of the heat exchanger cavity, and finally, it is delivered to the high place of the room through the upper air outlet 9. The cold air is blown to the far end of the room along the ceiling and slowly falls on the human body from a high place, without the feeling of blowing cold wind.

[0012] When delivering hot air in winter, the fan module 4 is removed from the lower fan module cavity 5 and installed in the upper fan module cavity 1, the fan power cord and the control line are connected to the connection socket, the fan 6 air intake is connected with the upper air outlet 9, the fan 6 air outlet is stuck at the upper air outlet 10 of the heat exchanger cavity, and is connected with the heat exchanger cavity 2. The indoor air is sucked by the fan 6 and sent into the heat exchanger cavity 2 through the upper air outlet 9, the fan 6, and the upper air outlet 10 of the heat exchanger cavity, and is heated by the heat exchanger 3. Then, it is sent to the lower fan module cavity 5 through the lower air outlet 11 of the heat exchanger cavity, and finally, air is delivered to the room floor through the lower air outlet 7. The hot air blows on people's legs, which provides a good experience.

[0013] Figure 3 , 4 In the figure, the fan 6 is installed in the lower fan module cavity 5, and is a plug-in movable type. Its air intake and air outlet are provided with slots or connectors connected to the lower air outlet 11 of the heat exchanger cavity. When delivering cold air in summer, the air outlet of the fan 6 is stuck at the lower air outlet 11 of the heat exchanger cavity, and is connected to the heat exchanger cavity 2. The indoor air is sucked by the fan 6 and sent into the heat exchanger cavity 2 through the lower air outlet 7, the fan 6, and the lower air outlet 11 of the heat exchanger cavity, and is cooled and dehumidified by the heat exchanger 3. Then, it is sent to the upper air cavity 12 through the upper air outlet 10 of the heat exchanger cavity, and finally, it is delivered to the upper air cavity 12 through the upper air outlet 9. The cold air is attached to the top plate and blows to the far end of the room, and slowly falls on the human body from a high place, without the feeling of blowing cold air. When delivering hot air in winter, remove the fan 6, and stick the air suction port of the fan 6 at the lower air port 11 of the heat exchanger cavity to connect it with the heat exchanger cavity 2. The indoor air is sucked by the fan 6 and sent into the heat exchanger cavity 2 through the upper air port 9, the upper air cavity 12, and the upper air port 10 of the heat exchanger cavity, and is heated by the heat exchanger 3. Then, the air is delivered to the room floor through the lower air port 11 of the heat exchanger cavity, the fan 6, the lower fan module cavity 5, and the lower air port 7. The hot air blows on people's legs, giving a good experience. The fan 6 in the figure is a centrifugal fan, and an axial flow fan can also be used. Since the air duct of the axial flow fan is a straight cylindrical circle, the connection between the air outlets at both ends and the lower air outlet 11 of the heat exchanger cavity can use the same fixing parts, and the structure is simpler. There is a bracket in the lower fan module cavity 5 to support and fix the fan 6, and there is an inlet cover for disassembling and assembling the fan 6. There is a device for fixing the air outlet of the fan 6 at the lower air outlet 11 of the heat exchanger cavity, and the fan 6 can also be placed in the upper air cavity 12.

[0014] Figure 5In the embodiment, the fan 13 is an axial flow fan, which is installed in the lower fan module cavity 5. The rotating shaft 15 is installed on the outer wall of the axial flow fan air duct 14, and the two ends are fixed on the shell of the lower fan module cavity 5. It can rotate 180 degrees to turn the air outlet. The upper air outlet is connected to the lower air outlet 11 of the heat exchanger cavity, and the lower air outlet is connected to the lower air outlet 7. A sealing plate 16 is installed at the lower air outlet to divide the lower fan module cavity 5 into two spaces. The upper space is connected to the upper space of the fan 13. The end air outlet is connected to the lower air outlet 11 of the heat exchanger cavity, the lower space is connected to the lower air outlet and the lower air outlet 7 of the fan 13, the sealing plate 16 is sealed with the shell of the lower fan module cavity 5 and the outer wall of the axial fan air duct 14 to prevent air leakage. When the fan 13 needs to be reversed, the sealing plate 16 can be disassembled and assembled to deliver cold air in summer and hot air in winter. The lower fan module cavity 5 has an inlet cover plate of the rotating fan 13, and the fan 13 can also be placed in the upper air cavity 12.

[0015] Figure 5 The axial flow fan 13 in the heat exchanger can be a reversible axial flow fan or a counter-rotating axial flow fan to realize two-way air supply. The axial flow fan 13 is fixed in the lower fan module cavity 5, and the upper end air outlet is fixed at the lower air outlet 11 of the heat exchanger cavity, which is connected with the heat exchanger cavity 2, and the lower end air outlet is connected with the lower air outlet 7, and the sealing plate 16 is cancelled. When sending cold air in summer, the indoor air passes through the lower air outlet 7, the fan module cavity 5, the axial flow fan 13, the lower air outlet 11 of the heat exchanger cavity, the heat exchanger cavity 2, the heat exchanger 3, the upper air outlet 10 of the heat exchanger cavity, the upper air cavity 12, and the upper air outlet 9 to send cold air to the high place of the room. When delivering hot air in winter, the axial flow fan 13 is electrically reversed to deliver air in the reverse direction, and the indoor air passes through the upper air port 9, the upper air cavity 12, the upper air port 10 of the heat exchanger cavity, the heat exchanger cavity 2, the heat exchanger 3, the lower air port 11 of the heat exchanger cavity, the axial flow fan 13, the fan module cavity 5, and the lower air port 7 to deliver hot air to the floor of the room. The axial flow fan 13 can also be placed in the upper air cavity 12. Since the axial flow fan 13 adopts electric reversing, the trouble of manual reversing is avoided, and the safety is improved.

[0016] Figure 6In the embodiment, the air conditioner is a wall-mounted air conditioner, which includes a fan module 4, a secondary return air chamber 20, a heat exchanger cavity 2, a heat exchanger 3, and a shell 8. The air conditioner is wall-mounted, and the shell 8 surrounds the secondary return air chamber 20 and the heat exchanger cavity 2. The secondary return air chamber 20 has a secondary return air port 19, a secondary return air chamber outlet 21, and a secondary return air chamber inlet and outlet. The secondary return air port 19 is installed at the front of the secondary return air chamber 20, the secondary return air chamber outlet 21 is installed at the upper part of the secondary return air chamber 20, the secondary return air chamber inlet and outlet are installed at the lower part of the secondary return air chamber 20, the secondary return air chamber 20 is installed at the upper part of the heat exchanger cavity 2, and the heat exchanger cavity 2 is provided. The heat exchanger 3 is installed in the heat exchanger cavity 2, and has an upper air port 10 of the heat exchanger cavity at the upper part of the heat exchanger cavity 2, and a lower air port 11 of the heat exchanger cavity at the lower part of the heat exchanger cavity 2. The inlet and outlet of the secondary return air cavity are connected with the upper air port 10 of the heat exchanger cavity. The fan module 4 is a plug-in movable type, which includes a cross-flow fan 17, an air duct, an air inlet, an air outlet 18, and a shell. The cross-flow fan 17 is installed in the air duct, one end of the air duct is the air inlet, and the other end is the air outlet 18. The air inlet is stuck at the air outlet 21 of the secondary return air cavity, and is connected with the secondary return air cavity 20, or the air inlet is stuck at the lower air port 11 of the heat exchanger cavity, and is connected with the heat exchanger cavity 2. The fan module 4 has a fixed connection device with the shell 8 of the heat exchanger cavity 2 to keep the fan module 4 stably connected to the upper or lower part of the shell 8. The fan module 4 has plugs for the power cord and control line of the crossflow fan 17, and sockets are matched at corresponding positions on the upper and lower shells of the heat exchanger cavity 2 to ensure the connection of the main power supply and the control module. The form of the heat exchanger 3 is not limited to the existing multi-module combination type, and can also be an integral type, tilted or vertically installed. The lower part of the heat exchanger 3 is equipped with a condensate pan, which is discharged to the outside, and the secondary return air outlet 19 adopts an electric or manual adjustable air outlet.

[0017] When delivering cold air in summer, the secondary return air vent 19 is closed, the fan module 4 is installed above the secondary return air cavity 20, the air inlet of the fan module 4 is connected to the air outlet 21 of the secondary return air cavity, and under the suction of the cross-flow fan 17, the indoor air enters the heat exchanger cavity 2 from the lower air vent 11 of the heat exchanger cavity, is cooled and dehumidified by the heat exchanger 3, and then passes through the upper air vent 10 of the heat exchanger cavity, the secondary return air cavity 20, the secondary return air cavity outlet 21, the air duct inlet of the fan module 4, the cross-flow fan 17, and the air supply vent 18, and finally delivers air to the high place of the room. The cold air sticks to the ceiling and blows to the far end of the room, and slowly falls on the human body from a high place, without the feeling of blowing cold wind. Or the secondary return air vent 19 is opened, the indoor secondary return air is mixed with the cold air processed by the heat exchanger 3 in the secondary return air chamber 20, the cold air is reheated, the supply air temperature is increased, and finally the cold air is sent into the room through the supply air vent 18 by the cross-flow fan 17. Since the supply air temperature is increased, the human body does not feel the cold wind.

[0018] When delivering hot air in winter, the fan module 4 is installed under the heat exchanger cavity 2, and the air inlet of the fan module 4 is connected to the lower air outlet 11 of the heat exchanger cavity. Under the suction of the cross-flow fan 17, the indoor air enters the heat exchanger cavity 2 from the secondary return air outlet 19, the secondary return air cavity outlet 21, the secondary return air cavity inlet and outlet, and the upper air outlet 10 of the heat exchanger cavity, and is heated by the heat exchanger 3. Then, it passes through the lower air outlet 11 of the heat exchanger cavity, the air duct inlet of the fan module 4, the cross-flow fan 17, and the air supply outlet 18, and finally delivers air to the floor of the room. The hot air blows on people's legs, which provides a good experience.

[0019] Figure 7 In Figure 5 The air conditioner is equipped with a fresh air duct 22, which enters the lower fan module cavity 5 from the lower part of the shell, enters the lower fan module cavity 5 through the air valve 24, and enters the heat exchanger cavity 2 through the air valve 23. When sending cold air in summer, open the air valve 24 and close the air valve 23. Under the suction of the axial flow fan 13, the outdoor fresh air enters the lower fan module cavity 5 through the air valve 24, mixes with the indoor air entering from the lower air outlet 7, enters the heat exchanger cavity 2 through the axial flow fan 13 and the lower air outlet 11 of the heat exchanger cavity, is cooled and dehumidified by the heat exchanger 3, and then is sent to the upper air cavity 12 through the upper air outlet 10 of the heat exchanger cavity, and finally sent to the upper air cavity 12 through the upper air outlet 9. The cold air is attached to the top plate and blows to the far end of the room, and slowly falls on the human body from a high place, without the feeling of blowing cold wind. When delivering hot air in winter, open the air valve 23 and close the air valve 24. Under the suction of the axial flow fan 13, the outdoor fresh air enters the heat exchanger cavity 2 through the air valve 23, and the indoor air enters the heat exchanger cavity 2 from the upper air port 9, the upper air cavity 12, and the upper air port 10 of the heat exchanger cavity. The two are mixed and heated by the heat exchanger 3, and then delivered to the floor of the room through the lower air port 11 of the heat exchanger cavity, the axial flow fan 13, and the lower air port 7. The hot air blows on people's legs, which is a good experience. Since the fresh air is increased, the indoor air quality is improved. The air valves 23 and 24 are electrically adjustable air valves or manually adjustable air valves.

[0020] Figure 8In the embodiment, the upper and lower air supply air conditioner comprises a cold air fan 26, a hot air fan 6, an upper air cavity 25, a lower air cavity 27, an upper air fan module cavity 1, a lower air fan module cavity 5, a heat exchanger cavity 2, a heat exchanger 3, an upper air outlet 9, a lower air outlet 7, a cold air return air outlet 29, a hot air return air outlet 30, and a shell 8. The air conditioner is characterized in that the air conditioner is a cabinet type or a column type, and the shell 8 encloses the upper air cavity 25, the lower air cavity 27, the upper air fan module cavity 1, the lower air fan module cavity 5, the heat exchanger cavity 2, the heat exchanger 3, the upper air outlet 9, the lower air outlet 7, the cold air return air outlet 29, the hot air return air outlet 30, and the shell 8. The heat exchanger cavity 2, the upper air cavity 25 and the upper air port 9 are installed in the upper part of the shell, the upper fan module cavity 1 is installed in the lower part of the upper air cavity 25, and the two are separated by a sealing plate 31, the heat exchanger cavity 2 is installed in the lower part of the upper fan module cavity 1, the lower air cavity 27 is installed in the lower part of the heat exchanger cavity 2, the lower fan module cavity 5 is installed in the lower part of the lower air cavity 27, and is located at the bottom of the shell 8, and the lower fan module cavity 5 and the lower air cavity 27 are separated by a sealing plate 28. The upper air inlet 9 is mounted on the housing of the upper air cavity 22, the cold air fan 26 is mounted in the upper air module cavity 1, the air outlet thereof is connected to the upper air cavity 25, the air inlet is connected to the upper air module cavity 1, the hot air return air inlet 30 is mounted on the housing of the upper air module cavity 1, the upper air inlet 10 of the heat exchanger cavity is located at the upper part of the heat exchanger cavity 2, and is connected to the upper air module cavity 1, the heat exchanger 3 is mounted in the heat exchanger cavity 2, the lower air inlet 11 of the heat exchanger cavity is located at the lower part of the heat exchanger cavity 2, and is connected to the upper air module cavity 1. The lower air cavity 27 is connected, the cold air return air outlet 29 is on the shell of the lower air cavity 27, the hot air blower 6 is installed in the lower air blower module cavity 5, and its air outlet is connected to the lower air blower module cavity 5, the air intake is connected to the lower air cavity 27, the lower air outlet 7 is installed on the shell of the lower air blower module cavity 5, the upper air outlet 9, the lower air outlet 7, the cold air return air outlet 29, and the hot air return air outlet 30 are electrically adjustable air outlets or manually adjustable air outlets, and the cold air fan 26 and the hot air blower 6 are centrifugal fans and axial flow fans.

[0021] When delivering cold air in summer, the cold air fan 26 is turned on, the hot air fan 6 is stopped, the upper air vent 9 and the cold air return air vent 29 are opened, the lower air vent 7 is opened or closed, and the hot air return air vent 30 is closed. The indoor return air passes through the cold air return air vent 29, the lower air cavity 27, and the lower air vent 11 of the heat exchanger cavity, and is cooled and dehumidified by the heat exchanger 3 in the heat exchanger cavity 2. Then, it enters the upper fan module cavity 1 through the upper air vent 10 of the heat exchanger cavity, and is drawn into the upper air cavity 25 by the cold air fan 26. Finally, the cold air is delivered to the upper altitude of the room through the upper air vent 9. The cold air is blown to the far end of the room along the ceiling, and slowly falls on the human body from a high altitude, without the feeling of blowing cold wind. Or the hot air return vent 30 is opened, and the indoor secondary return air is mixed with the cold air processed by the heat exchanger 3 in the upper fan module cavity 1, and the cold air is reheated to increase the supply air temperature, and finally sent into the room by the cold air fan 26 through the upper air cavity 25 and the upper air vent 9. Since the supply air temperature is increased, the human body does not feel the cold wind.

[0022] When delivering hot air in winter, the hot air blower 6 is turned on, the cold air blower 26 is stopped, the downwind vent 7 and the hot air return vent 30 are opened, the cold air return vent 29 is closed, and the upwind vent 9 is opened or closed. The indoor return air passes through the hot air return vent 30, the upwind module cavity 1, and the upwind vent 10 of the heat exchanger cavity, and is heated by the heat exchanger 3 in the heat exchanger cavity 2. Then, it enters the downwind cavity 27 through the downwind vent 11 of the heat exchanger cavity, and is drawn into the downwind module cavity 5 by the hot air blower 6. Finally, it is delivered to the floor of the room through the downwind vent 7, and the hot air blows on people's legs, providing a good experience.

[0023] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An air conditioner with upper and lower air supply, comprising a fan module, an upper fan module cavity, a lower fan module cavity, a heat exchanger cavity, an upper air outlet, a lower air outlet, a heat exchanger, and a housing, wherein: The air conditioner is cabinet-type or column-type, and the outer shell is surrounded by an upper fan module cavity, a lower fan module cavity, and a heat exchanger cavity. The upper fan module cavity and the upper air outlet are installed in the upper part of the shell, and the lower fan module cavity and the lower air outlet are installed in the lower part of the shell. The heat exchanger cavity is installed in the middle part of the shell, located between the upper fan module cavity, the upper air outlet and the lower fan module cavity and the lower air outlet. The heat exchanger is installed in the heat exchanger cavity. The fan module is a plug-in mobile type and is installed in the upper fan module cavity or the lower fan module cavity. The upper air outlet is connected to the upper fan module cavity. The lower air outlet is connected with the lower fan module cavity, the fan module includes a fan and a shell, the fan is installed in the shell, with a fan outlet and an air intake, and with a slot or connector fixedly connected to the upper fan module cavity or the lower fan module cavity, the fan outlet and the air intake are connected with the heat exchanger cavity, and are connected with the upper air outlet and the lower air outlet, the upper fan module cavity and the lower fan module cavity are equipped with connection sockets for the fan power line and the control line, and are provided with an inlet cover for disassembling and assembling the fan module, and the fan adopts a centrifugal fan and an axial flow fan.

2. An air conditioner with upper and lower air supply, comprising a fan, an upper air cavity, a lower fan module cavity, a heat exchanger cavity, an upper air outlet, a lower air outlet, a heat exchanger, and a casing, wherein: The air conditioner is cabinet-type or column-type, and the outer shell is surrounded by an upper air cavity, a lower fan module cavity, and a heat exchanger cavity. The upper air cavity and the upper air outlet are installed in the upper part of the shell, and the lower fan module cavity and the lower air outlet are installed in the lower part of the shell. The heat exchanger cavity is installed in the middle part of the shell, located between the upper air cavity, the upper air outlet and the lower fan module cavity and the lower air outlet. The heat exchanger is installed in the heat exchanger cavity. The fan is a plug-in mobile type and is installed in the lower fan module cavity. Its air outlet and air intake are provided with slots or connectors connected to the lower air outlet of the heat exchanger cavity. The fan air outlet and air intake are connected with the heat exchanger cavity, and are connected with the upper air outlet and the lower air outlet. The upper air outlet is connected with the upper air cavity, and the lower air outlet is connected with the lower fan module cavity. The lower fan module cavity has an inlet cover for disassembling and installing the fan. The fan adopts a centrifugal fan, an axial flow fan, or the fan is installed in the upper air cavity.

3. An air conditioner with up and down air supply, comprising an axial flow fan, an upper air cavity, a lower air module cavity, a heat exchanger cavity, an upper air outlet, a lower air outlet, a heat exchanger, and a casing, wherein: The air conditioner is cabinet-type or column-type, and the outer shell is surrounded by an upper air cavity, a lower fan module cavity, and a heat exchanger cavity. The upper air cavity and the upper air outlet are installed in the upper part of the shell, and the lower fan module cavity and the lower air outlet are installed in the lower part of the shell. The heat exchanger cavity is installed in the middle part of the shell, located between the upper air cavity, the upper air outlet and the lower fan module cavity and the lower air outlet. The heat exchanger is installed in the heat exchanger cavity, and the axial fan is installed in the lower fan module cavity. A rotating shaft is installed on the outer wall of the axial fan air duct, and its two ends are fixed on the shell of the lower fan module cavity. When it rotates 180°, the air outlet is turned, and the upper air outlet is connected to the lower air outlet of the heat exchanger cavity, and the lower air outlet is connected to the lower air outlet. A sealing plate is installed at the lower air outlet to divide the lower fan module cavity into two spaces. The upper space is connected with the upper air outlet of the axial flow fan and the lower air outlet of the heat exchanger cavity, and the lower space is connected with the lower air outlet and the lower air outlet of the axial flow fan. The sealing plate is sealed with the shell of the lower fan module cavity and the outer wall of the axial flow fan air duct to prevent air leakage. When the axial flow fan needs to be reversed, the sealing plate is disassembled and installed, and the air outlet and air intake of the axial flow fan are connected with the heat exchanger cavity, and are connected with the upper air outlet and the lower air outlet. The upper air outlet is connected with the upper air cavity, and the lower air outlet is connected with the lower fan module cavity. The lower fan module cavity has an inlet cover plate of a rotating axial flow fan, or the axial flow fan is installed in the upper air cavity.

4. An air conditioner with up and down air supply, comprising an axial flow fan, an upper air cavity, a lower air module cavity, a heat exchanger cavity, an upper air outlet, a lower air outlet, a heat exchanger, and a casing, wherein: The air conditioner is cabinet-type or column-type, and the outer shell is surrounded by an upper air cavity, a lower fan module cavity, and a heat exchanger cavity. The upper air cavity and the upper air outlet are installed in the upper part of the shell, the lower fan module cavity and the lower air outlet are installed in the lower part of the shell, and the heat exchanger cavity is installed in the middle part of the shell, located between the upper air cavity, the upper air outlet and the lower fan module cavity and the lower air outlet. The heat exchanger is installed in the heat exchanger cavity, and the upper air outlet is installed on the upper air cavity shell. The upper air outlet of the heat exchanger cavity is located at the upper part of the heat exchanger cavity and is connected with the upper fan module cavity. The lower air outlet of the heat exchanger cavity is located at the lower part of the heat exchanger cavity. The axial flow fan is fixed in the lower fan module cavity, the upper end air outlet is fixed at the lower air outlet of the heat exchanger cavity and is connected with the heat exchanger cavity, the lower end air outlet is located in the lower fan module cavity and is connected with the lower air outlet. The axial flow fan adopts a reversible axial flow fan or a counter-rotating axial flow fan.

5. An air conditioner with up and down air supply, comprising a fan module, a secondary return air chamber, a heat exchanger chamber, a heat exchanger, and a housing, characterized in that: The air conditioner is wall-mounted, and the outer shell is surrounded by a secondary return air cavity and a heat exchanger cavity. The secondary return air cavity is provided with a secondary return air port, a secondary return air cavity air outlet, and a secondary return air cavity inlet and outlet. The secondary return air port is installed at the front of the secondary return air cavity, the secondary return air cavity air outlet is installed at the upper part of the secondary return air cavity, the secondary return air cavity inlet and outlet are installed at the lower part of the secondary return air cavity, the secondary return air cavity is installed at the upper part of the heat exchanger cavity, the heat exchanger is installed in the heat exchanger cavity, the upper part of the heat exchanger cavity is provided with a heat exchanger cavity upper air port, the lower part of the heat exchanger cavity is provided with a heat exchanger cavity lower air port, and the secondary return air cavity inlet and outlet are connected to the upper air port of the heat exchanger cavity. The fan module is a plug-in mobile type, which includes a cross-flow fan, an air duct, an air inlet, an air outlet, and a shell. The cross-flow fan is installed in the air duct, one end of the air duct is the air inlet, and the other end is the air outlet. The air inlet is stuck at the air outlet of the secondary return air cavity and is connected to the secondary return air cavity, or the air inlet is stuck at the lower air outlet of the heat exchanger cavity and is connected to the heat exchanger cavity. The fan module and the heat exchanger cavity shell are provided with a fixed connection device to keep the fan module stably connected to the upper or lower part of the shell. The fan module has plugs for the power cord and control line of the cross-flow fan, and sockets are matched at corresponding positions on the upper and lower shells of the heat exchanger cavity.

6. An air conditioner with up and down air supply, comprising an axial flow fan, an upper air cavity, a lower air module cavity, a heat exchanger cavity, an upper air outlet, a lower air outlet, a heat exchanger, a fresh air duct, and a casing, wherein: The air conditioner is cabinet-type or column-type, and the outer shell is surrounded by an upper air cavity, a lower fan module cavity, and a heat exchanger cavity. The upper air cavity and the upper air outlet are installed in the upper part of the shell, and the lower fan module cavity and the lower air outlet are installed in the lower part of the shell. The heat exchanger cavity is installed in the middle part of the shell, located between the upper air cavity, the upper air outlet and the lower fan module cavity and the lower air outlet. The heat exchanger is installed in the heat exchanger cavity, and the axial fan is installed in the lower fan module cavity. A rotating shaft is installed on the outer wall of the axial fan air duct, and its two ends are fixed on the shell of the lower fan module cavity. When it rotates 180°, the air outlet is turned, and the upper air outlet is connected to the lower air outlet of the heat exchanger cavity, and the lower air outlet is connected to the lower air outlet. A sealing plate is installed at the lower air outlet to separate the lower fan module cavity into two spaces. The upper space is connected with the upper air outlet of the axial flow fan and the lower air outlet of the heat exchanger cavity, the lower space is connected with the lower air outlet and the lower air outlet of the axial flow fan, the sealing plate is sealed with the shell of the lower fan module cavity and the outer wall of the axial flow fan air duct to prevent air leakage. When the axial flow fan needs to be reversed, the sealing plate is disassembled and assembled, the air outlet and air intake of the axial flow fan are connected with the heat exchanger cavity, and are connected with the upper air outlet and the lower air outlet. The upper air outlet is connected with the upper air cavity, and the lower air outlet is connected with the lower fan module cavity. The lower fan module cavity has an inlet cover plate for a rotating axial flow fan. After the new air duct is connected to the lower part of the lower fan module cavity, it is divided into two paths, one path enters the lower fan module cavity through the air valve, and the other path enters the heat exchanger cavity through the air valve, or the axial flow fan is installed in the upper air cavity.

7. An air conditioner with upper and lower air supply, comprising a cold air blower, a hot air blower, an upper air cavity, a lower air cavity, an upper air blower module cavity, a lower air blower module cavity, a heat exchanger cavity, a heat exchanger, an upper air inlet, a lower air inlet, a cold air return inlet, a hot air return inlet, and a casing, wherein: The air conditioner is cabinet-type or column-type, and the outer shell is surrounded by an upper air cavity, a lower air cavity, an upper fan module cavity, a lower fan module cavity, and a heat exchanger cavity. The upper air cavity and the upper air outlet are installed in the upper part of the shell, the upper fan module cavity is installed in the lower part of the upper air cavity, and the two are separated by a sealing plate. The heat exchanger cavity is installed in the lower part of the upper fan module cavity, the lower air cavity is installed in the lower part of the heat exchanger cavity, the lower fan module cavity is installed in the lower part of the lower air cavity, and is located at the bottom of the shell. The lower fan module cavity and the lower air cavity are separated by a sealing plate. The upper air outlet is installed on the upper air cavity shell, and the air cooler is installed in the upper fan module cavity. The air outlet is connected to the upper air cavity, the air intake is connected to the upper fan module cavity, the hot air return air outlet is installed on the upper fan module cavity shell, the upper air outlet of the heat exchanger cavity is located at the upper part of the heat exchanger cavity and is connected to the upper fan module cavity, the heat exchanger is installed in the heat exchanger cavity, the lower air outlet of the heat exchanger cavity is located at the lower part of the heat exchanger cavity and is connected to the lower air cavity, the cold air return air outlet is on the lower air cavity shell, the hot air fan is installed in the lower fan module cavity, the air outlet is connected to the lower fan module cavity, the air intake is connected to the lower air cavity, the lower air outlet is installed on the lower fan module cavity shell, the cold air fan and the hot air fan adopt centrifugal fans and axial flow fans.

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