Wall-mounted floor-standing air conditioner indoor unit
By using expansion plates or microchannel plates as heat exchangers in the indoor unit of the air conditioner, and combining them with detachable fan components, the problems of dirt accumulation and space occupation of aluminum fins are solved, thereby improving the comfort and energy efficiency of the air conditioner.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING YONGXU TECH CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-07-28
AI Technical Summary
The aluminum fin heat exchangers in existing air conditioner indoor units are prone to accumulating dirt, making them difficult to clean and taking up space, which leads to reduced comfort and energy efficiency.
Using blown plates or microchannel plates without aluminum fins as heat exchangers, combined with detachable reversing fan assemblies, allows for flexible switching between cool air in summer and hot air in winter. Condensate is used for pre-cooling or preheating, improving air handling efficiency.
It improves the comfort of air conditioning, avoids the problems of blowing cold air in summer and hot air in winter, improves energy efficiency, and simplifies the cleaning process.
Smart Images
Figure CN224567520U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air conditioning, specifically relating to a wall-mounted or floor-standing air conditioner indoor unit. Background Technology
[0002] To enhance heat exchange, existing air conditioner indoor units use aluminum fin heat exchangers. However, because the fins are dense and soft, they are prone to accumulating dirt, making cleaning difficult and easily damaging. Summary of the Invention
[0003] The purpose of this utility model is to provide a heat exchanger without aluminum fins, which is not easy to accumulate dirt and is easy to clean. The wall-mounted and floor-standing air conditioner indoor unit made of it has a thin body and does not take up too much indoor space, realizing the upward delivery of cold air in summer and the downward delivery of hot air in winter.
[0004] The solution of this utility model is: a wall-mounted floor-standing air conditioner indoor unit, which includes a front panel, a rear panel, a fan chamber, a fan assembly, and a mixing chamber. Its characteristic is that the upper part of the front panel and rear panel is a heat exchange section with a heat exchange medium flow channel for heat exchange with the air, and the lower part is a pre-cooling section for pre-cooling the incoming air in summer. The heat exchange section uses an inflatable plate or a microchannel plate. The front panel and rear panel are spaced apart to form a heat exchange air duct. The mixing chamber is connected above the heat exchange air duct, and the fan chamber is connected above the mixing chamber. A secondary return air inlet is installed on the side of the mixing chamber. The fan assembly is installed in the fan chamber and includes an air duct, a fan, an air duct inlet, and an air duct outlet. The fan is installed inside the air duct, and one end of its outlet is connected to the mixing chamber. The other end of the air vent connects to the indoor unit. A primary return air vent is installed below the pre-cooling section of the heat exchange duct, through which indoor return air enters the heat exchange duct. A condensate tray is installed at the bottom of the heat exchange duct, where the air conditioning condensate collects and is eventually discharged outdoors. The fan assembly is a detachable reversible type, which changes the airflow direction in the heat exchange duct by changing the interface. The fan uses a cross-flow fan or a coaxial dual centrifugal fan. The power distribution and control equipment is installed in the fan room. The indoor unit of this wall-mounted floor-standing air conditioner is placed on the ground with its top located below the floor slab, providing sufficient height to ensure maximum air supply height in summer and floor air supply in winter. The distance between the front panel and the back panel is 3 to 5 centimeters, and the ultra-thin design saves space.
[0005] When supplying cool air in summer, the refrigerant enters the heat exchange medium flow channel at the top of the front panel and rear panel. The primary and secondary return air vents open, the fan starts, and the indoor primary return air enters the heat exchange duct from the primary return air vent. It exchanges heat with the refrigerant at the top of the front and rear panels, is cooled and dehumidified, and forms low-temperature condensate on the panel surface. It flows down the panel surface to the lower pre-cooling section to pre-cool the primary return air and recover the cold energy of the low-temperature condensate, thus achieving energy saving. The primary return air is treated into low-temperature air and enters the upper mixing chamber, where it mixes with the high-temperature secondary return air entering from the secondary return air vent. The air temperature is reheated and increased, and finally, it is delivered into the room through the fan assembly. Because the air temperature and air delivery height are increased, people do not feel cold air blowing, resulting in a good experience.
[0006] When supplying hot air in winter, the fan assembly is disassembled, the air outlets are reversed, and the air supply direction is changed. The heat medium enters the heat exchange medium flow channel at the top of the front panel and the back panel. The primary return air vent is opened, the secondary return air vent is closed, the fan is started, and the indoor cold air enters the mixing chamber from the fan assembly, then enters the heat exchange air duct. It is heated by the heat medium at the top of the front panel and the back panel, and finally sent into the room through the primary return air vent at the bottom, forming floor heating air, which makes people's legs feel comfortable.
[0007] Therefore, it avoids the problem of cold air blowing on the body in summer and hot air blowing on the head in winter, makes full use of air conditioner condensate, improves comfort, and achieves the purpose of energy saving. Moreover, it has a simple structure, is not easy to accumulate dust, and is easy to clean. The front panel and back panel are made of blown plate or microchannel plate, and aluminum can be used to achieve copper with aluminum. Attached Figure Description
[0008] Figure 1 It is the indoor structure of a wall-mounted or floor-standing air conditioner. Figure 1 Figure 2 It is the indoor structure of a wall-mounted or floor-standing air conditioner. Figure 2 Figure 3 It is the indoor structure of a wall-mounted or floor-standing air conditioner. Figure 3 Figure 4 It is the indoor structure of a wall-mounted or floor-standing air conditioner. Figure 4 Figure 5 It is the indoor structure of a wall-mounted or floor-standing air conditioner. Figure 5 Figure 6 It is the indoor structure of a wall-mounted or floor-standing air conditioner. Figure 6 Figure 7 This is a diagram showing the unfolded structure of the front panel and rear panel. Figure 8 yes Figure 5 Elevation drawing Explanation of reference numerals in the attached figures: 1. Front panel, 2. Rear panel, 3. Heat exchange air duct, 4. Precooling section, 5. Fan room, 6. Fan assembly, 7. Mixing chamber, 8. Secondary return air inlet, 9. Primary return air inlet, 10. Condensate tray, 11. Insulation board, 12. Power distribution and control equipment, 13. Smooth panel, 14. Water collection tank, 15. Lining board, 16. Fresh air inlet, 17. Blow-out tube, 18. Heat exchange medium connection pipe, 19. Bending line, 20. Fresh air duct. Detailed Implementation
[0009] Figure 1 , 2 The wall-mounted floor-standing air conditioner indoor unit includes a front panel 1, a rear panel 2, a fan chamber 5, a fan assembly 6, and a mixing chamber 7. Its key feature is that the upper part of the front panel 1 and rear panel 2 is a heat exchange section with a heat exchange medium flow channel for heat exchange with the air, and the lower part is a pre-cooling section 4 for pre-cooling the incoming air in summer. The heat exchange section uses an expansion plate or microchannel plate. The front panel 1 and rear panel 2 form a heat exchange duct 3, which connects to the mixing chamber 7 above the heat exchange duct 3. The fan chamber 5 is connected to the mixing chamber 7 above the mixing chamber 7. A secondary return air inlet 8 is installed on the side of the mixing chamber 7. The fan assembly 6 is installed inside the fan chamber 5 and includes a duct, a fan, a duct inlet, and a duct outlet. The fan is installed inside the duct, with one end of its air outlet connected to the mixing chamber 7 and the other end connected to... Inside the room, a primary return air inlet 9 is installed below the pre-cooling section 4 of the heat exchange duct 3. Indoor return air enters the heat exchange duct 3 through this inlet. A condensate tray 10 is installed at the bottom of the heat exchange duct 3, where the air conditioning condensate collects and is eventually discharged outdoors. The fan assembly 6 is a detachable reversible type, which changes the airflow direction in the heat exchange duct 3 by changing the interface. The fan uses a cross-flow fan or a coaxial dual centrifugal fan. The power distribution and control equipment is installed in the fan room 5. The indoor unit of this wall-mounted floor-standing air conditioner is placed on the ground with its top located below the floor slab, at a height of more than 2.5 meters, providing sufficient height to ensure maximum air supply height in summer and floor air supply in winter. The gap between the front panel 1 and the back panel 2 is 3 to 5 centimeters, with an ultra-thin thickness that does not take up space. The back panel 2 is equipped with hooks to hang the unit on the wall. Insulation boards 11 are attached to the outside of the front panel 1 and the back panel 2 to prevent condensation on the outside in summer. Air filters are installed at the top and bottom air inlets.
[0010] When supplying cool air in summer, the refrigerant enters the heat exchange medium channel from the upper part of the front panel 1 and the rear panel 2, and flows out from the lower part. The primary return air inlet 9 and the secondary return air inlet 8 are opened, and the fan starts. The indoor primary return air enters the heat exchange duct 3 from the primary return air inlet 9, exchanges heat with the refrigerant in the upper part of the front panel 1 and the rear panel 2, and is cooled and dehumidified, forming low-temperature condensate on the panel surface. This condensate flows down the panel surface to the lower pre-cooling section 4, pre-cooling the primary return air and recovering the cold energy of the low-temperature condensate, thus achieving energy saving. The primary return air is treated into low-temperature air and enters the upper mixing chamber 7, where it mixes with the high-temperature secondary return air entering from the secondary return air inlet 8. The air temperature is reheated and increased, and finally, it is delivered into the room through the fan assembly 5. Because the air temperature and the air delivery height are increased, people do not feel the cold air blowing, resulting in a good experience. The flow direction of the refrigerant is opposite to the air flow direction in the heat exchange duct 3, resulting in more complete heat exchange.
[0011] When supplying hot air in winter, disassemble fan assembly 5, reverse the air outlets, and change the airflow direction. The heat medium enters the heat exchange medium flow channel from the lower part of the front panel 1 and rear panel 2, and flows out from the top. The primary return air vent 9 opens, the secondary return air vent 8 closes, and the fan starts. The indoor cold air enters the mixing chamber 7 from fan assembly 5, and then enters the heat exchange duct 3. It is heated by the heat medium in the upper part of the front panel 1 and rear panel 2, and finally delivered into the room through the primary return air vent 9 at the bottom, forming floor-level heated air, which feels comfortable on the legs. The flow direction of the heat medium is opposite to the air flow direction in the heat exchange duct 3, resulting in more complete heat exchange.
[0012] The front panel 1 and rear panel 2 can be connected to refrigerant and serve as the indoor unit of a split air conditioner. They can also be used as the terminal of an air conditioning water system to connect to the air conditioner's hot and cold water.
[0013] Figure 3 In the middle, the front panel 1 is not covered with the insulation board 11, becoming a smooth panel 13. In summer, air conditioning condensate flows from the outer surface of the panel to the water collection tank 14 at the bottom of the smooth panel 13, and then flows into the condensate pan 10. The smooth panel 13 enhances heat exchange with the indoor air, generating cold radiation to the room in summer and heat radiation to the room in winter.
[0014] Figure 4 In the heat exchange duct 3, an inner lining plate 15 is added, or multiple inner lining plates 15 can be added, which improves the heat exchange power of the air conditioner. Its structure is the same as the light panel 13. The heat exchange section adopts a blown plate or microchannel plate with a plate spacing of 2 to 5 cm. When cold air is delivered in summer, the condensate generated on the plate surface falls directly into the condensate pan 10 at the bottom. During the fall of the pre-cooling section 4, the low temperature condensate exchanges heat with the indoor return air, pre-cools and lowers the temperature of the primary return air, recovers the cold energy of the low temperature condensate, and achieves energy saving.
[0015] Figure 5 , 6In the heat exchange duct 3, a fresh air inlet 16 is located at the pre-cooling section 4 at the bottom, connecting to the outdoor air. The fan assembly 6 is detachable and movable. In summer, when supplying cool air, the fan assembly 6 is installed in the upper fan chamber 5. Under the suction of the fan, indoor return air and fresh air enter from the bottom and exit from the top. In winter, when supplying hot air, the fan assembly 6 is installed in the lower fan chamber. Under the suction of the fan, indoor return air enters from the top, fresh air enters from the pre-cooling section 4, and finally exits from the bottom. A power and control signal socket should be provided at the bottom. When the fan assembly 6 is installed at the bottom, the plug should be inserted to connect to the power distribution and control equipment 12 in the fan chamber 5.
[0016] Figure 7 This is a structural diagram of the front panel 1 and the rear panel 2. It consists of two sections of blown-out plate heat exchangers blown out between two aluminum or stainless steel plates. The heat exchange duct 3 is formed by bending the sheet metal along bending line 19, and the joint is welded and sealed. The heat exchange duct 3 serves as both the air duct and the outer casing of the wall-mounted unit, and one or more inner lining plates 15 made of blown-out plates can be placed within it. The blown-out tubes 17 are horizontal serpentine channels. The heat exchange medium connecting pipe 18 exits at the lower part of the plate, connecting to refrigerant or air conditioning hot / cold water. To enhance heat exchange, the spacing between the blown-out tubes 17 should be between 2 and 5 centimeters, and the heat exchange area should be at least 2 square meters. In summer, when supplying cold air, the refrigerant enters from the upper horizontal serpentine channel and exits from the lower horizontal serpentine channel. In winter, when supplying hot air, the heat medium enters from the lower horizontal serpentine channel and exits from the upper horizontal serpentine channel, opposite to the airflow direction in the heat exchange duct 3, resulting in more efficient heat exchange. The front panel 1, rear panel 2, and inner lining plate 15 can also be microchannel heat exchange plates. The flow channel should preferably be a horizontal serpentine flow channel. To prevent scaling and blockage, it is advisable to connect to refrigerant, but not to connect to air conditioning hot or cold water. It is not limited to the horizontal serpentine flow channel form, and other forms of flow channels can also be used.
[0017] Figure 8 yes Figure 5 The elevation view shows that the fresh air duct 20 is connected to the fresh air inlet 16 and connected to the outside. The fresh air duct 20, the heat exchange medium pipe 18, the condensate pipe, and the cable can share a single through-wall hole.
[0018] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.
Claims
1. A wall-hung floor standing air conditioner indoor unit, comprising a front panel, a back panel, a fan chamber, a fan assembly, and a mixed air chamber, characterized in that, The upper part of the front panel and rear panel is a heat exchange section with a heat exchange medium flow channel for heat exchange with the air. The lower part is a pre-cooling section for pre-cooling the incoming air in summer. The heat exchange section uses blown plates or microchannel plates. The front panel and rear panel are spaced apart to form a heat exchange air duct. A mixing chamber is connected above the heat exchange air duct, and a fan chamber is connected above the mixing chamber. A secondary return air inlet is installed on the side of the mixing chamber. The fan assembly is installed in the fan chamber, which includes an air duct, a fan, an air duct inlet, and an air duct outlet. The fan is installed inside the air duct, with one end... The air outlet is connected to the mixing chamber, and the other end of the air outlet is connected to the indoor unit. A primary return air outlet is installed below the pre-cooling section of the heat exchange duct. A condensate tray is installed at the bottom of the heat exchange duct, where the air conditioning condensate flows and is eventually discharged outdoors. The fan assembly is a detachable reversible type, and the airflow direction in the heat exchange duct can be changed by changing the interface. The fan uses a cross-flow fan or a coaxial dual centrifugal fan. The power distribution and control equipment is installed in the fan room. The indoor unit of this wall-mounted floor-standing air conditioner is placed on the ground and the top is located below the floor slab.
2. A wall-hung floor standing air conditioner indoor unit, which comprises a front panel, a back panel, an inner lining panel, a fan chamber, a fan assembly, and a mixed air chamber, characterized in that, The front panel, back panel, and upper part of the inner lining plate form a heat exchange section with a heat exchange medium flow channel for heat exchange with the air. The lower part is a pre-cooling section for pre-cooling the incoming air in summer. The heat exchange section uses inflatable plates or microchannel plates. The front panel and back panel are spaced apart to form a heat exchange air duct. One or more inner lining plates are installed in the heat exchange air duct. A mixing chamber is connected above the heat exchange air duct, and a fan chamber is connected above the mixing chamber. A secondary return air inlet is installed on the side of the mixing chamber. The fan assembly is installed in the fan chamber, which includes an air duct, a fan, an air duct inlet, and an air duct outlet. The unit is installed inside the air duct, with one end of its air outlet connected to the mixing chamber and the other end connected to the indoor unit. A primary return air outlet is installed below the pre-cooling section of the heat exchange air duct. A condensate tray is installed at the bottom of the heat exchange air duct, where the air conditioning condensate collects and is eventually discharged outdoors. The fan assembly is a detachable reversible type, which changes the airflow direction in the heat exchange air duct by changing the interface. The fan uses a cross-flow fan or a coaxial dual centrifugal fan. The power distribution and control equipment is installed in the fan room. The indoor unit of this wall-mounted floor-standing air conditioner is placed on the ground with its top located below the floor slab.
3. A wall-mounted / floor-standing air conditioner indoor unit, comprising a front panel, a rear panel, an inner lining panel, a fan compartment, a fan assembly, and a mixing chamber, characterized in that... The front panel, back panel, and upper part of the inner lining plate form a heat exchange section with a heat exchange medium flow channel for heat exchange with the air. The lower part is a pre-cooling section for pre-cooling the incoming air in summer. The heat exchange section uses inflatable plates or microchannel plates. The front panel and back panel are spaced apart to form a heat exchange air duct. One or more inner lining plates are installed in the heat exchange air duct. A mixing chamber is connected above the heat exchange air duct, and a fan chamber is connected above the mixing chamber. A secondary return air inlet is installed on the side of the mixing chamber. The fan assembly includes an air duct, a fan, an air duct inlet, and an air duct outlet. The fan is installed inside the air duct and is detachable and movable. The air conditioner is installed in the upper fan room during the season, with one end of its air outlet connected to the mixing chamber and the other end connected to the indoor air. In winter, it is installed below the heat exchange duct, with one end of its air outlet connected to the heat exchange duct and the other end connected to the indoor air. A condensate tray is installed at the bottom of the heat exchange duct, where the condensate from the air conditioner collects and is eventually discharged outdoors. A fresh air inlet is opened at the pre-cooling section at the bottom of the heat exchange duct, which is connected to the outdoor air. The fan is a cross-flow fan or a coaxial dual centrifugal fan. The power distribution and control equipment is installed in the fan room. The indoor unit of this wall-mounted floor-standing air conditioner is placed on the ground and the top is located below the floor slab.