Multi-mode whole-house total heat fresh air air conditioner layout structure with foam air duct

Abstract

The application discloses a multi-mode whole-house total heat fresh air air conditioner layout structure with a foam air duct, which comprises a total heat fresh air kitchen air conditioner all-in-one machine, a fresh air inlet pipe, an exhaust pipe, a return air pipe, a supply air pipe, a fresh air air distribution box, an air conditioner air distribution box, a fresh air foam air duct, a return air foam air duct, a fresh air air valve, a return air air valve and a bypass air valve. The all-in-one machine shell is internally provided with an exhaust fan assembly, a fresh air fan assembly, a total heat exchanger core, coarse and high-efficiency filter screens, an evaporator and a condenser. The fresh air foam air duct and the return air foam air duct are integrally injection-molded foam structures and can switch the upper and lower air ducts. The system realizes multi-path corresponding air supply through double air distribution boxes. The fresh air inlet pipe and the return air pipe are provided with bypass valves and connecting pipes, forming four operation channels of fresh air, air conditioning, exhaust air and total fresh air. The layout structure has high integration degree, reasonable pipeline arrangement, convenient installation, energy saving and comfort.

Description

Technical Field

[0001] This invention relates to an air conditioning and fresh air system, and more particularly to a multi-mode whole-house whole-house heat preservation air conditioning layout structure with foam ducts, belonging to the field of air conditioning and fresh air technology. Background Technology

[0002] As people's requirements for indoor air quality and living comfort continue to increase, integrated equipment that combines air conditioning and fresh air exchange functions has become an urgent problem for the industry to solve.

[0003] Traditional air conditioning and fresh air systems are mostly installed separately, which is not only cumbersome to install and takes up a lot of space, but also has defects in the layout design for whole-house coverage. The fresh air delivery path is unreasonable, resulting in uneven distribution of fresh air indoors and insufficient fresh air volume in remote areas.

[0004] There are also problems such as low fresh air heat exchange efficiency and high energy consumption, or the layout of the total heat exchange module conflicts with the air conditioning cooling / heating module, affecting heat exchange efficiency and equipment stability. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing traditional air conditioning and fresh air systems, such as unreasonable layout, cumbersome installation, large space occupation, low thermal efficiency, and high energy consumption. It provides a multi-mode whole-house whole-house heat exchanger layout structure with foam ducts, which can achieve the goals of reasonable layout, simplified installation, small space occupation, high thermal efficiency, and low energy consumption.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a multi-mode whole-house whole-house heat exchanger layout structure with foam duct, including a kitchen fresh air unit, a fresh air inlet duct, an exhaust duct, a return air duct, and a supply air duct. The kitchen fresh air unit includes a square housing; one end of the fresh air inlet duct is connected to the rear left side of the housing, and the other end of the fresh air inlet duct is a fresh air inlet located on the exterior wall; one end of the exhaust duct is connected to the front left side of the housing, and the other end of the exhaust duct is an exhaust outlet located on the exterior wall; one end of the return air duct is connected to the rear right side of the housing, and the other end of the return air duct is provided with several return air inlets; the first end of the supply air duct is connected to the front right side of the housing.

[0007] It also includes an air supply duct, a fresh air distribution box, a fresh air supply duct assembly, an air conditioning distribution box, an air conditioning supply duct assembly, a bypass valve, a fresh air valve, and a return air valve; one end of the air supply duct is connected to the right front side of the housing, and the other end of the air supply duct splits into two air supply ducts. One air supply duct is connected to one end of the fresh air distribution box through a first air supply duct valve, and the other end of the fresh air distribution box is connected to the fresh air supply duct assembly; the fresh air supply duct assembly includes several fresh air outlets; the other air supply duct is connected to one end of the air conditioning distribution box through a second air supply duct valve, and the other end of the air conditioning distribution box is connected to the air conditioning supply duct assembly; the air conditioning supply duct assembly includes several air conditioning outlets.

[0008] The number of return air vents, the number of fresh air vents, and the number of air conditioning vents are equal;

[0009] A connecting pipe is provided between the fresh air inlet pipe and the return air pipe near the housing, and a bypass ventilation valve is provided on the connecting pipe; the fresh air valve is located inside the fresh air inlet pipe; the return air valve is located inside the return air pipe.

[0010] The kitchen fresh air unit is a combined whole heat recovery and fresh air kitchen air conditioner. An exhaust fan assembly is located in the front left part of the casing, and a whole heat recovery exchange core is located in the middle of the casing, reducing energy consumption through whole heat recovery. Coarse filters are located on the left and front sides of the whole heat recovery exchange core, and a high-efficiency filter is located on the right side of the whole heat recovery exchange core. A fresh air fan assembly is located in the front right part of the casing, with an evaporator located at the rear left of the fresh air fan assembly and a condenser located at the rear right of the exhaust fan assembly. A fresh air foam duct is located in the rear left part of the casing, and a return air foam duct is located in the rear right part of the casing. The fresh air foam duct includes an upper duct and a lower duct, and the internal structure of the return air foam duct is the same as that of the fresh air foam duct but in the opposite direction. The fresh air fan assembly includes a supply fan motor; the exhaust fan assembly includes an exhaust fan motor.

[0011] The operating modes of a kitchen fresh air system include fresh air mode, air conditioning mode, exhaust mode, and 100% fresh air mode;

[0012] The fresh air mode includes a fresh air operation channel and a fresh air return air operation channel; the fresh air operation channel includes a fresh air inlet, a fresh air inlet duct, a lower duct of the fresh air foam duct, a coarse filter, a total heat exchanger core, a high-efficiency filter, an evaporator, a fresh air fan assembly, a supply duct, a first supply duct damper, and a fresh air supply duct assembly; the fresh air return air operation channel includes a return air outlet, a return air duct, a lower duct of the return air foam duct, a high-efficiency filter, a total heat exchanger core, a coarse filter, a condenser, an exhaust fan assembly, an exhaust duct, and an exhaust outlet;

[0013] The air conditioning mode includes an air conditioning mode fresh air operation channel and an air conditioning mode return air operation channel; the air conditioning mode fresh air operation channel includes a fresh air inlet, a fresh air inlet duct, an upper duct of the fresh air foam duct, a condenser, an exhaust fan assembly, an exhaust duct, and an exhaust outlet; the air conditioning mode return air operation channel includes a return air outlet, a return air duct, an upper duct of the return air foam duct, an evaporator, a fresh air fan assembly, a supply air duct, a second supply air duct damper, and an air conditioning supply air duct assembly;

[0014] The exhaust mode includes an exhaust mode exhaust operation channel; the exhaust mode exhaust operation channel includes a return air inlet, a return air duct, a bypass ventilation valve, an upper air duct for the fresh air foam duct, a condenser, an exhaust fan assembly, an exhaust duct, and an exhaust outlet;

[0015] The fresh air mode includes a fresh air operation channel; the fresh air operation channel includes a fresh air inlet, a fresh air inlet duct, a bypass ventilation valve, an upper duct of the return air foam duct, an evaporator, a fresh air fan assembly, a supply air duct, a second supply air duct valve, and an air conditioning supply air duct assembly.

[0016] A new layout structure for a whole-house heat exchanger has been developed. By optimizing the spatial arrangement of system components and the design of airflow paths, it solves the problems of uneven fresh air distribution, low heat exchange efficiency, and cumbersome maintenance caused by unreasonable layout of traditional equipment. The heat exchange module, adsorption purification module, air conditioning cooling / heating module and whole-house air supply pipeline are integrated into the design to achieve uniform delivery of fresh air throughout the house. Through the conversion of air valves, it can meet the needs of various rooms such as positive pressure, negative pressure and normal pressure.

[0017] The other end of the return air duct is connected to the first return air inlet, the second return air inlet, the third return air inlet, the fourth return air inlet, and the fifth return air inlet.

[0018] The fresh air supply duct assembly includes a first fresh air outlet, a second fresh air outlet, a third fresh air outlet, a fourth fresh air outlet, and a fifth fresh air outlet; the first, second, third, fourth, and fifth fresh air outlets correspond to the room outlet, living room outlet, kitchen outlet, balcony outlet, and bathroom outlet, respectively. The air conditioning supply duct assembly includes a first air conditioning outlet, a second air conditioning outlet, a third air conditioning outlet, a fourth air conditioning outlet, and a fifth air conditioning outlet; the first, second, third, fourth, and fifth air conditioning outlets correspond to the room outlet, living room outlet, kitchen outlet, balcony outlet, and bathroom outlet, respectively.

[0019] The fresh air foam duct is an integral structure made of foam plastic material and molded in one piece using an injection molding process. The fresh air foam duct includes an upper duct structure, a lower duct shell, a baffle plate, a damper plate, a rotating shaft, a stepper motor, a damper control plate, a fresh air inlet, a side air outlet, and a rear air outlet. The lower duct shell, baffle plate, damper plate, rotating shaft, stepper motor, and damper control plate constitute the lower duct structure assembly. The stepper motor and damper control plate are located on the right side of the lower duct shell.

[0020] The rotating shaft is positioned in the upper middle part of the lower air duct structure in the left and right directions. The right end of the rotating shaft is fixedly connected to the output shaft of the stepper motor, and the rear side of the air valve plate is fixedly connected to the rotating shaft. The baffle plate is obliquely fixed inside the lower air duct housing. The upper air duct is located above the baffle plate, and the lower air duct is located below the baffle plate.

[0021] When the stepper motor starts, it drives the damper plate to rotate upward or downward via the rotating shaft. When the damper plate rotates upward to the highest position, it blocks the upper air duct and opens the lower air duct, connecting the fresh air inlet and the side air outlet. When the damper plate rotates downward to the lowest position, it blocks the lower air duct and opens the upper air duct, connecting the fresh air inlet and the rear air outlet. This forms a three-duct structure, enabling flexible air delivery through the upper and lower air ducts.

[0022] The return air foam duct is an integral structure made of foam plastic material and molded in one piece through injection molding. The internal structure of the return air foam duct is the same as that of the fresh air foam duct, but the left and right directions are opposite.

[0023] When operating in fresh air mode, the bypass ventilation valve is closed, the fresh air valve is open, the return air valve is open, the lower duct of the fresh air foam duct is open, the supply motor of the fresh air fan assembly is on, the second supply air duct valve is closed, and the first supply air duct valve is open. Fresh air operates according to the fresh air mode's fresh air operation channel. Simultaneously, the lower duct of the return air foam duct is open, the exhaust motor of the exhaust fan assembly is on, and return air operates according to the fresh air mode's return air operation channel. This significantly saves energy and reduces consumption, recovering most of the heat and cold in the exhaust air, improving indoor comfort; in winter, it avoids direct cold air intrusion, and in summer, it reduces heat wave impact, making the supply air temperature closer to room temperature, improving physical comfort, and maintaining humidity balance.

[0024] When operating in air conditioning mode, the bypass ventilation valve is closed, the fresh air valve is open, the return air valve is open, the upper duct of the fresh air foam duct is open, and the exhaust fan motor of the exhaust fan assembly is on. Fresh air operates according to the air conditioning mode's fresh air operation channel. Simultaneously, the upper duct of the return air foam duct is open, the supply fan motor of the fresh air fan assembly is on, the first supply air duct valve is closed, and the second supply air duct valve is open. Return air operates according to the air conditioning mode's return air operation channel. In air conditioning mode, cooling and dehumidification functions are available. As indoor return air passes through the condenser, its temperature is lowered, and moisture is released, achieving dehumidification and preventing the introduction of polluted outdoor air into the room when outdoor air quality is poor or severely polluted.

[0025] When the exhaust mode is running, the bypass ventilation valve is open, the fresh air valve is closed, the return air valve is open, the upper air duct of the fresh air foam duct is open, the supply motor of the fresh air fan assembly is closed, and the exhaust motor of the exhaust fan assembly is open. The exhaust operates according to the exhaust mode exhaust channel.

[0026] When operating in 100% fresh air mode, the bypass ventilation valve is open, the fresh air valve is open, the return air valve is closed, the upper air duct of the return air foam duct is open, the exhaust fan motor of the exhaust fan assembly is closed, the supply air motor of the fresh air fan assembly is open, the first supply air duct valve is open, the second supply air duct valve is closed, and the fresh air operates according to the 100% fresh air mode fresh air operation channel.

[0027] It also includes a compressor and a throttle valve. The compressor, condenser, throttle valve, and evaporator are connected in sequence, and the evaporator is also connected to the compressor to form a refrigeration and air conditioning system. The condenser absorbs heat to achieve the purpose of cooling. It also includes a water pump, which is located behind the fresh air fan assembly and is used to extract condensate.

[0028] It also includes an electrical control box and an inspection door; the electrical control box is located on the outer side of the front left part of the housing, and the compressor, water pump, blower motor and exhaust motor are all electrically connected to the electrical control box; the inspection door is located in the middle of the front side of the housing, in front of the heat exchanger core, which facilitates the maintenance and replacement of the heat exchanger core, coarse filter and high efficiency filter; in low temperature and high humidity environments, the fresh air filter is prone to condensation and frost, which shortens its service life. This system solves the maintenance problem of traditional filters.

[0029] When the damper plate is rotated upwards to its highest position, the angle between the damper plate and the horizontal direction is 41-43°; when the damper plate is rotated downwards to its lowest position, the angle between the damper plate and the horizontal direction is 41-43°; the angle between the fixed position of the baffle plate and the horizontal direction is 36-38°; the damper plate has two sets of intersecting diamond-shaped reinforcing ribs on both sides; the lower side of the baffle plate is sealed and fixedly connected to the bottom rear side of the lower air duct structure, and the left and right sides of the baffle plate are sealed and fixedly connected to the inner wall; the bottom of the lower air duct structure is provided with a wire groove for laying the lead wires in the control box.

[0030] By adopting fresh air foam ducts and return air foam ducts, the supply air fresh air rate is increased by more than 3%, the cooling capacity is increased by more than 9%, and the cooling efficiency is increased by more than 1.9%.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] (1) Integrated layout with higher space utilization: The functions of total heat exchange, air purification, air conditioning cooling and heating, and whole-house fresh air supply are integrated into the same total heat exchange and fresh air kitchen air conditioner. The traditional two separate sets of air conditioning and fresh air equipment are eliminated, greatly simplifying the installation process and reducing the space occupied by the ceiling and equipment. It is especially suitable for small apartments, fine decoration and kitchens and other compact spaces. The dual functions of air conditioning and fresh air can be realized with one installation.

[0033] (2) Uniform air supply throughout the house with no dead corners: The airflow is precisely distributed through the fresh air distribution box, the air conditioning distribution box and the multi-way air supply duct group. The return air vent, fresh air outlet and air conditioning outlet are arranged in a corresponding manner to achieve uniform air supply in the room, living room, kitchen, balcony and bathroom. It completely solves the problems of insufficient fresh air volume, airflow short circuit and uneven heating and cooling in traditional systems. It can flexibly realize three indoor pressure modes: positive pressure, negative pressure and normal pressure, and adapt to different scenario needs such as kitchen smoke exhaust, bathroom deodorization and bedroom oxygen enrichment.

[0034] (3) Full heat recovery is highly efficient and energy-saving, and energy consumption is significantly reduced: The equipment has a built-in full heat exchange core, and the exhaust air and fresh air exchange heat efficiently in the core. Most of the cold and heat in the exhaust air can be recovered, which greatly reduces the air conditioning load. In winter, cold air is avoided and heat waves are reduced in summer. The supply air temperature is closer to the room temperature, which improves comfort and reduces the overall energy consumption of the machine, making it more energy-efficient for long-term use.

[0035] (4) Foam dual-channel design, heat preservation, noise reduction and stable airflow: The fresh air foam channel and return air foam channel are integrally injection molded, which have excellent heat preservation performance, reduce heat loss, heat rise faster and cool down more stably; the inner wall of the channel is smooth with low wind resistance and lower operating noise. With the automatic switching of the air valve, the upper and lower channels can be flexibly supplied with air, and the airflow is more stable and the air supply is more uniform.

[0036] Higher fresh air delivery efficiency: Adopting a foam duct structure, the fresh air delivery rate is increased by more than 3%, the fresh air delivery loss is smaller, the indoor fresh air is replaced more thoroughly, the purity of the delivered air and the proportion of effective delivered air are significantly optimized, and the whole house ventilation effect is better.

[0037] Significantly upgraded cooling performance: After the optimization of the air duct structure, the cooling capacity is increased by more than 9%, and the cooling efficiency is improved by more than 1.9%. Under the same operating conditions, the cooling capacity is stronger and the cooling speed is faster. Better cooling effect can be achieved without increasing the power, and the comfort level is significantly improved.

[0038] Foam ducts have built-in heat insulation and noise reduction: Foam material has excellent heat insulation properties, which can reduce the loss of cold air along the duct and prevent condensation; at the same time, the porous foam structure can effectively block wind noise and airflow resonance noise, making the operation quieter.

[0039] Energy saving and consumption reduction: The utilization rate of fresh air and cooling efficiency are both improved, the overall workload of the unit is reduced, and less electricity is consumed under the same ventilation and cooling needs. The energy saving effect is obvious in the long term.

[0040] Lightweight and corrosion resistant: Foam ducts are lightweight, easy to install, highly adaptable, and not prone to rusting, aging, or mold. Compared with traditional metal ducts, they have a longer service life and lower maintenance costs.

[0041] Smoother airflow delivery: The foam duct has a regular inner wall shape and low wind resistance, resulting in low air pressure loss and more uniform and gentle airflow from the whole unit. There is no sudden increase or decrease in airflow, and the air circulation throughout the house is more balanced.

[0042] (5) Multi-mode intelligent switching, with a wider range of applicable scenarios: It has four operating modes: fresh air mode, air conditioning mode, exhaust mode and fresh air mode. The fresh air mode has efficient air exchange and full heat recovery; the air conditioning mode has fast cooling and dehumidification to prevent outdoor polluted air from entering; the exhaust mode and fresh air mode realize direct exhaust and intake of indoor and outdoor air, fast air exchange and fast cooling, which are suitable for various usage scenarios such as spring and autumn transition season, smoggy days and fast ventilation.

[0043] (6) Multiple purification for healthier indoor air: Equipped with a coarse filter and a high-efficiency filter, it effectively intercepts dust, particulate matter, fumes and pollutants. Combined with positive pressure protection throughout the house, it prevents polluted outdoor air from seeping in through gaps. It is especially suitable for areas such as kitchens and bathrooms that are prone to odors and fumes, keeping the air in the whole house clean and fresh.

[0044] (7) Reasonable structure, convenient maintenance and more durable: The whole machine has a compact layout and clear pipeline routing. The shell is equipped with a special inspection door, which can be quickly disassembled for cleaning or replacement of the heat exchange core, coarse filter and high efficiency filter. The air duct and filter structure are optimized to solve the problems of traditional filters such as low temperature and high humidity, easy condensation and frosting, short life and complicated maintenance. Long-term operation is more stable and reliable.

[0045] (8) The system is closed-loop controlled and operates stably and safely: the compressor, water pump, blower motor, exhaust motor and each air valve are controlled by the electrical control box. The condensate drain pump is used to prevent condensate leakage. The refrigeration system operates in a closed loop, with high heat exchange efficiency and low failure rate, and can meet the needs of whole house temperature regulation and air quality improvement for a long time. Attached Figure Description

[0046] Figure 1 Yes: Structural diagram of the present invention;

[0047] Figure 2 yes: Figure 1 Enlarged view of part A;

[0048] Figure 3 Yes: Fresh air mode operation diagram;

[0049] Figure 4 Yes: Air conditioning mode operation diagram;

[0050] Figure 5 Yes: Exhaust mode operation diagram;

[0051] Figure 6 Yes: A diagram showing the operation of the fresh air mode;

[0052] Figure 7 Yes: Main view of the fresh air foam duct;

[0053] Figure 8 Yes: 3D diagram of fresh air foam duct;

[0054] Figure 9 Yes: 3D view of the downdraft duct structure components;

[0055] Figure 10 Yes: Rear view of the foam duct (3D model);

[0056] Figure 11 Yes: 3D diagram of return air foam duct.

[0057] Explanation of reference numerals in the attached diagrams: 1. Fresh air inlet duct; 2. Exhaust duct; 3. Return air duct; 301. First return air outlet; 302. Second return air outlet; 303. Third return air outlet; 304. Fourth return air outlet; 305. Fifth return air outlet; 4. Supply air duct; 5. Fresh air inlet; 6. Housing; 7. Exhaust outlet; 9. Fresh air distribution box; 10. Fresh air supply duct assembly; 10. First fresh air outlet; 1001. Second fresh air outlet; 1002. Third fresh air outlet; 1003. Fourth fresh air outlet; 1004. Fifth fresh air outlet; 1005. Air conditioning distribution box; 11. Air conditioning supply duct assembly; 12. First air conditioning outlet; 1201. Second air conditioning outlet; 1202. Third air conditioning outlet; 1203. Fourth air conditioning outlet; 1204. Fifth air conditioning outlet; 1205. Bypass valve; 13. Fresh air foam duct; 14. Upper air duct structure; 1401. 1402. Lower air duct housing; 1403. Baffle plate; 1404. Air valve plate; 1405. Rotating shaft; 1406. Stepper motor; 1407. Air valve control board; 1408. Lower air duct structural components; 1409. Upper air duct; 1410. Lower air duct; 1411. Fresh air inlet; 1412. Side air outlet; 1413. Rear air outlet; 1414. Reinforcing rib; 1415. Cable tray; 1416. Return air foam duct; 17. Electrical... 16. Control box 17. Inspection door 18. Exhaust fan motor 19. Supply fan motor 20. Fresh air valve 21. Return air valve 22. Connecting pipe 22. First supply air duct valve 23. Second supply air duct valve 24. Exhaust fan assembly 27. Total heat exchanger core 28. Coarse filter 29. High efficiency filter 30. Fresh air fan assembly 31. Evaporator 32. Condenser 33. Compressor 34. Throttling device 35. Water pump 36. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] like Figures 1 to 11 As shown, a multi-mode whole-house whole-house heat exchanger layout structure with foam ducts is as follows: Figure 1As shown, the system includes a kitchen fresh air unit, a fresh air inlet duct 1, an exhaust duct 2, a return air duct 3, and a supply air duct 4. The kitchen fresh air unit includes a housing 6. One end of the fresh air inlet duct 1 is connected to the rear left side of the housing 6, and the other end of the fresh air inlet duct 1 is a fresh air inlet 5, which is installed on the exterior wall. One end of the exhaust duct 2 is connected to the front left side of the housing 6, and the other end of the exhaust duct 2 is an exhaust outlet 7, which is installed on the exterior wall. One end of the return air duct 3 is connected to the rear right side of the housing 6, and the other end of the return air duct 3 is provided with several return air inlets. The first end of the supply air duct 4 is connected to the front right side of the housing 6.

[0060] like Figure 1 and Figure 2 As shown, it also includes a fresh air distribution box 9, a fresh air supply duct assembly 10, an air conditioning distribution box 11, an air conditioning supply duct assembly 12, a bypass ventilation valve 13, a fresh air valve 20, and a return air valve 21; one end of the supply duct 4 is connected to the right front side of the housing 6, and the other end of the supply duct 4 is divided into two supply ducts 4. One supply duct 4 is connected to one end of the fresh air distribution box 9 through a first supply duct valve 23, and the other end of the fresh air distribution box 9 is connected to the fresh air supply duct assembly 10; the fresh air supply duct assembly 10 includes several fresh air outlets; the other supply duct 4 is connected to one end of the air conditioning distribution box 11 through a second supply duct valve 24, and the other end of the air conditioning distribution box 11 is connected to the air conditioning supply duct assembly 12; the air conditioning supply duct assembly 12 includes several air conditioning outlets.

[0061] The number of return air vents, the number of fresh air vents, and the number of air conditioning vents are equal;

[0062] A connecting pipe 22 is provided between the fresh air inlet pipe 1 and the return air pipe 3 near the housing 6, and a bypass ventilation valve 13 is provided on the connecting pipe 22; a fresh air valve 20 is provided in the fresh air inlet pipe 1; and a return air valve 21 is provided in the return air pipe 3.

[0063] like Figure 2 As shown, the kitchen fresh air unit is a combined whole heat recovery and fresh air kitchen air conditioner; an exhaust fan assembly 27 is located in the front left part of the housing 6, and a whole heat recovery exchange core 28 is located in the middle of the housing 6 to reduce energy consumption through whole heat recovery; coarse filters 29 are located on the left and front sides of the whole heat recovery exchange core 28, and a high-efficiency filter 30 is located on the right side of the whole heat recovery exchange core 28; a fresh air fan assembly 31 is located in the front right part of the housing 6, and a fresh air fan assembly 31 is located in the rear left part of the housing 6. An evaporator 32 is provided, and a condenser 33 is provided at the right rear of the exhaust fan assembly 27; a fresh air foam duct 14 is provided at the left rear of the housing 6, and a return air foam duct 15 is provided at the right rear of the housing 6; the fresh air foam duct 14 includes an upper air duct 1409 and a lower air duct 1410, and the internal structure of the return air foam duct 15 is the same as that of the fresh air foam duct 14 but in the opposite direction; the fresh air fan assembly includes a supply fan motor; the exhaust fan assembly includes an exhaust fan motor;

[0064] like Figures 3-6 As shown, the operating modes of the kitchen fresh air system include fresh air mode, air conditioning mode, exhaust mode, and 100% fresh air mode;

[0065] like Figure 2 and Figure 3 As shown, the fresh air mode includes a fresh air operation channel and a fresh air return air operation channel; the fresh air operation channel includes a fresh air inlet 5, a fresh air inlet duct 1, a lower air duct 1410 of the fresh air foam duct 14, a coarse filter 29, a total heat exchanger core 28, a high-efficiency filter 30, an evaporator 32, a fresh air fan assembly 31, a supply air duct 4, a first supply air duct valve 23, and a fresh air supply duct group 10; the fresh air return air operation channel includes a return air outlet, a return air duct 3, a lower air duct 1410 of the return air foam duct 15, a high-efficiency filter 30, a total heat exchanger core 28, a coarse filter 29, a condenser 33, an exhaust fan assembly 27, an exhaust duct 2, and an exhaust outlet 7;

[0066] like Figure 2 and Figure 4 As shown, the air conditioning mode includes an air conditioning mode fresh air operation channel and an air conditioning mode return air operation channel; the air conditioning mode fresh air operation channel includes a fresh air inlet 5, a fresh air inlet duct 1, an upper air duct 1409 of the fresh air foam duct 14, a condenser 33, an exhaust fan assembly 27, an exhaust duct 2, and an exhaust outlet 7; the air conditioning mode return air operation channel includes a return air outlet, a return air duct 3, an upper air duct 1409 of the return air foam duct 15, an evaporator 32, a fresh air fan assembly 31, a supply air duct 4, a second supply air duct damper 24, and an air conditioning supply air duct assembly 12;

[0067] like Figure 2 and Figure 5 As shown, the exhaust mode includes an exhaust mode exhaust operation channel; the exhaust mode exhaust operation channel includes a return air inlet, a return air duct 3, a bypass ventilation valve 13, an upper air duct 1409 of a fresh air foam duct 14, a condenser 33, an exhaust fan assembly 27, an exhaust duct 2, and an exhaust outlet 7;

[0068] like Figure 2 and Figure 6 As shown, the fresh air mode includes a fresh air operation channel; the fresh air operation channel includes a fresh air inlet 5, a fresh air inlet duct 1, a bypass ventilation valve 13, an upper air duct 1409 of a return air foam duct 15, an evaporator 32, a fresh air fan assembly 31, a supply air duct 4, a second supply air duct valve 24, and an air conditioning supply air duct assembly 12.

[0069] A new layout structure for a whole-house heat exchanger has been developed. By optimizing the spatial arrangement of system components and the design of airflow paths, it solves the problems of uneven fresh air distribution, low heat exchange efficiency, and cumbersome maintenance caused by unreasonable layout of traditional equipment. The heat exchange module, adsorption purification module, air conditioning cooling / heating module and whole-house air supply pipeline are integrated into the design to achieve uniform delivery of fresh air throughout the house. Through the conversion of air valves, it can meet the needs of various rooms such as positive pressure, negative pressure and normal pressure.

[0070] As shown in Figure 1, the other end of the return air duct 3 is connected to the first return air inlet 301, the second return air inlet 302, the third return air inlet 303, the fourth return air inlet 304, and the fifth return air inlet 305.

[0071] The fresh air supply duct assembly 10 includes a first fresh air outlet 1001, a second fresh air outlet 1002, a third fresh air outlet 1003, a fourth fresh air outlet 1004, and a fifth fresh air outlet 1005; the first fresh air outlet 1001, the second fresh air outlet 1002, the third fresh air outlet 1003, the fourth fresh air outlet 1004, and the fifth fresh air outlet 1005 correspond to the room air outlet, the living room air outlet, the kitchen air outlet, the balcony air outlet, and the bathroom air outlet; the air conditioning supply duct assembly 12 This includes the first air outlet 1201, the second air outlet 1202, the third air outlet 1203, the fourth air outlet 1204, and the fifth air outlet 1205 of the air conditioner; the first air outlet 1201, the second air outlet 1202, the third air outlet 1203, the fourth air outlet 1204, and the fifth air outlet 1205 correspond to the air outlets in the room, living room, kitchen, balcony, and bathroom.

[0072] like Figures 7-10 As shown, the fresh air foam duct 14 is an integral structure made of foam plastic material and integrally molded by injection molding. The fresh air foam duct 14 includes an upper duct structure 1401, a lower duct shell 1402, a baffle plate 1403, a damper plate 1404, a rotating shaft 1405, a stepper motor 1406, a damper control plate 1407, a fresh air inlet 1411, a side air outlet 1412, and a rear air outlet 1413. The lower duct shell 1402, the baffle plate 1403, the damper plate 1404, the rotating shaft 1405, the stepper motor 1406, and the damper control plate 1407 form the lower duct structure assembly 1408. The stepper motor 1406 and the damper control plate 1407 are located on the right side of the lower duct shell 1402.

[0073] The rotating shaft 1405 is positioned in the upper middle part of the lower air duct structure assembly 1408 in the left and right directions. The right end of the rotating shaft 1405 is fixedly connected to the output shaft of the stepper motor 1406. The rear side of the air valve plate 1404 is fixedly connected to the rotating shaft 1405. The baffle plate 1403 is obliquely fixedly installed inside the lower air duct housing 1402. The upper air duct 1409 is located above the baffle plate 1403, and the lower air duct 1410 is located below the baffle plate 1403.

[0074] When the stepper motor 1406 starts, it drives the damper plate 1404 to rotate upward or downward via the rotating shaft 1405. When the damper plate 1404 rotates upward to the highest position, it blocks the upper air duct 1409 and opens the lower air duct 1410, connecting the fresh air inlet 1411 and the side air outlet 1412. When the damper plate 1404 rotates downward to the lowest position, it blocks the lower air duct 1410 and opens the upper air duct 1409, connecting the fresh air inlet 1411 and the rear air outlet 1413. This forms a three-channel structure, enabling flexible air delivery through the upper and lower air ducts.

[0075] like Figure 11 As shown, the return air foam duct 15 is an integral structure made of foam plastic material and integrally formed by injection molding. The internal structure of the return air foam duct 15 is the same as that of the fresh air foam duct 14, but the left and right directions are opposite.

[0076] like Figure 2 and Figure 3 As shown, when the fresh air mode is running, the bypass ventilation valve 13 is closed, the fresh air valve 20 is open, the return air valve 21 is open, the lower air duct 1410 of the fresh air foam duct 14 is open, the supply air motor 19 of the fresh air fan assembly 31 is open, the second supply air duct valve 24 is closed, and the first supply air duct valve 23 is open. The fresh air operates according to the fresh air mode's fresh air operation channel. At the same time, the lower air duct 1410 of the return air foam duct 15 is open, the exhaust air motor 18 of the exhaust fan assembly 27 is open, and the return air operates according to the fresh air mode's return air operation channel. This significantly saves energy and reduces consumption, recovering most of the heat and cold in the exhaust air, improving indoor comfort; in winter, it avoids direct cold air entry, and in summer, it reduces heat wave impact, making the supply air temperature closer to room temperature, improving physical comfort, and maintaining humidity balance.

[0077] like Figure 2 and Figure 4As shown, when the air conditioning mode is running, the bypass ventilation valve 13 is closed, the fresh air valve 20 is open, the return air valve 21 is open, the upper air duct 1409 of the fresh air foam duct 14 is open, and the exhaust fan motor 18 of the exhaust fan assembly 27 is on. The fresh air operates according to the fresh air operation channel of the air conditioning mode. At the same time, the upper air duct 1409 of the return air foam duct 15 is open, the supply air motor 19 of the fresh air fan assembly 31 is on, the first supply air duct valve 23 is closed, and the second supply air duct valve 24 is open. The return air operates according to the return air operation channel of the air conditioning mode. In air conditioning mode, cooling and dehumidification functions can be performed. When the indoor return air passes through the condenser 33, the temperature is reduced and moisture is extracted to achieve the purpose of dehumidification, avoiding the introduction of polluted outdoor air into the room when the outdoor air quality is poor and heavily polluted.

[0078] like Figure 2 and Figure 5 As shown, when the exhaust mode is running, the bypass ventilation valve 13 is open, the fresh air valve 20 is closed, the return air valve 21 is open, the upper air duct 1409 of the fresh air foam duct 14 is opened, the air supply motor 19 of the fresh air fan assembly 31 is closed, and the exhaust motor 18 of the exhaust fan assembly 27 is opened. The exhaust is operated according to the exhaust mode exhaust operation channel.

[0079] like Figure 2 and Figure 6 As shown, when the fresh air mode is running, the bypass ventilation valve 13 is open, the fresh air valve 20 is open, the return air valve 21 is closed, the upper air duct 1409 of the return air foam duct 15 is open, the exhaust fan motor 18 of the exhaust fan assembly 27 is closed, the air supply motor 19 of the fresh air fan assembly 31 is open, the first air supply duct valve 23 is open, and the second air supply duct valve 24 is closed. The fresh air operates according to the fresh air operation channel of the fresh air mode.

[0080] like Figure 2 As shown, it also includes a compressor 34 and a throttle valve 35. The compressor 34, condenser 33, throttle valve 35, and evaporator 32 are connected in sequence, and the evaporator 32 is also connected to the compressor 34, forming a refrigeration and air conditioning system. The evaporator 32 absorbs heat to achieve the purpose of cooling. It also includes a water pump 36, which is located behind the fresh air fan assembly 31 and is used to extract condensate.

[0081] It also includes an electrical control box 16 and an inspection door 17; the electrical control box 16 is located on the outer side of the front left part of the housing 6, and the compressor 34, water pump 36, air supply motor 19 and exhaust motor 18 are all electrically connected to the electrical control box 16; the inspection door 17 is located in the middle of the front side of the housing 6, in front of the heat exchange core 28, which facilitates the maintenance and replacement of the heat exchange core 28, the coarse filter 29 and the high efficiency filter 30; in low temperature and high humidity environments, the fresh air filter is prone to condensation and frost, which shortens its service life. This system solves the maintenance problem of traditional filters.

[0082] When the damper plate 1404 is rotated upwards to its highest position, the angle between the damper plate and the horizontal direction is 42°. When the damper plate is rotated downwards to its lowest position, the angle between the damper plate and the horizontal direction is also 42°. The angle between the fixed position of the baffle plate and the horizontal direction is 37°. The damper plate has two sets of intersecting diamond-shaped reinforcing ribs 1414 on both sides. The lower side of the baffle plate 1403 is sealed and fixedly connected to the bottom rear side of the lower air duct structure. The left and right sides of the baffle plate are sealed and fixedly connected to the inner wall. The bottom of the lower air duct structure is provided with a wire groove 1415 for laying the lead wires in the control box.

[0083] Test data:

[0084] Air volume test: Tested at an air volume of 350 m³ / h.

[0085] Fresh air rate = 1 - [(C)] sa -C oa ) / (C ra -C oa )] ×100%;

[0086] C sa —The concentration of tracer gas in the air supplied from the outlet, expressed in cubic centimeters per cubic meter (cm³ / m³);

[0087] C oa —The concentration of tracer gas in the fresh air intake, expressed in cubic centimeters per cubic meter (cm³ / m³);

[0088] C ra —The concentration of tracer gas in the return air inlet, expressed in cubic centimeters per cubic meter (cm³ / m³);

[0089] When using a conventional air duct without foam: Net fresh air supply rate = 1 - [(0.52 - 0.39) / (3 - 0.39)] × 100% = 95.02%;

[0090] Air supply volume = 350 × fresh air rate 95.02% = 332.6 m³ / h;

[0091] When the present invention has a foam duct: the net fresh air supply rate = 1 - [(0.52-0.487) / (2.8-0.487)] × 100% = 98.58%; the air supply volume = 350 × fresh air rate 98.58% = 345 m³ / h.

[0092] The present invention improves the air supply net fresh air rate by 3.73%;

[0093] Cooling capacity test: Tested with a cooling air volume of 420m³ / h.

[0094] Cooling capacity Q = air volume L × (inlet enthalpy h1 - outlet enthalpy h2) × air density / 3600;

[0095] For a conventional air duct without foam: Q = 420 × (89.39 - 66.5) × 1.2 / 3600 = 3.2 kW;

[0096] When the present invention has a foam duct: Q=420×(89.39-64.2)×1.2 / 3600=3.5kw.

[0097] The cooling capacity of this invention is increased by 9.375%.

[0098] Cooling efficiency test:

[0099] Formula: η = (Enthalpy of fresh air intake h) oa -Enthalpy value at the air outlet h sa ) / ( Fresh air intake enthalpy h oa - Enthalpy value of return air inlet h ra )×100%;

[0100] In conventional air ducts without foam: h oa =90.03、h sa =70.29、h ra =56;

[0101] Cooling efficiency = (90.03 - 70.29) / (90.03 - 56) × 100% = 58%;

[0102] When the present invention has a foam duct: h oa =89.39、h sa =69、h ra =55.49;

[0103] Cooling efficiency = (89.39-69) / (89.39-55.49)×100%=60%.

[0104] The refrigeration efficiency of this invention is improved by 2%.

[0105] The embodiments described above are merely preferred embodiments of the present invention. Ordinary variations and substitutions made by those skilled in the art within the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-mode whole-house heat exchanger layout structure with foam duct, comprising a kitchen fresh air unit, a fresh air inlet duct, an exhaust duct, a return air duct, and a supply air duct, wherein the kitchen fresh air unit comprises a square housing; one end of the fresh air inlet duct is connected to the rear left side of the housing, and the other end of the fresh air inlet duct is a fresh air inlet located on the exterior wall; one end of the exhaust duct is connected to the front left side of the housing, and the other end of the exhaust duct is an exhaust outlet located on the exterior wall; one end of the return air duct is connected to the rear right side of the housing, and the other end of the return air duct is provided with several return air inlets; the first end of the supply air duct is connected to the front right side of the housing, characterized in that: It also includes an air supply duct, a fresh air distribution box, a fresh air supply duct assembly, an air conditioning distribution box, an air conditioning supply duct assembly, a bypass valve, a fresh air valve, and a return air valve; one end of the air supply duct is connected to the right front side of the housing, and the other end of the air supply duct splits into two air supply ducts. One air supply duct is connected to one end of the fresh air distribution box through a first air supply duct valve, and the other end of the fresh air distribution box is connected to the fresh air supply duct assembly; the fresh air supply duct assembly includes several fresh air outlets; the other air supply duct is connected to one end of the air conditioning distribution box through a second air supply duct valve, and the other end of the air conditioning distribution box is connected to the air conditioning supply duct assembly; the air conditioning supply duct assembly includes several air conditioning outlets. The number of return air vents, the number of fresh air vents, and the number of air conditioning vents are equal; A connecting pipe is provided between the fresh air inlet pipe and the return air pipe near the housing, and a bypass ventilation valve is provided on the connecting pipe; the fresh air valve is located inside the fresh air inlet pipe; the return air valve is located inside the return air pipe. The kitchen fresh air unit is a combined whole heat recovery fresh air kitchen air conditioner; an exhaust fan assembly is installed in the front left part of the housing, and a whole heat exchange core is installed in the middle of the housing to reduce energy consumption through whole heat recovery; a coarse filter is installed on the left and front sides of the whole heat exchange core, and a high-efficiency filter is installed on the right side of the whole heat exchange core. A fresh air fan assembly is located at the front right of the housing. An evaporator is located at the rear left of the fresh air fan assembly, and a condenser is located at the rear right of the exhaust fan assembly. The fresh air fan assembly includes a supply fan motor, and the exhaust fan assembly includes an exhaust fan motor. A fresh air foam duct is located at the rear left of the housing, and a return air foam duct is located at the rear right of the housing. The fresh air foam duct includes an upper duct and a lower duct. The internal structure of the return air foam duct is the same as that of the fresh air foam duct, but the left and right directions are reversed. The operating modes of a kitchen fresh air system include fresh air mode, air conditioning mode, exhaust mode, and 100% fresh air mode; The fresh air mode includes a fresh air operation channel and a fresh air return air operation channel; the fresh air operation channel includes a fresh air inlet, a fresh air inlet duct, a lower duct of the fresh air foam duct, a coarse filter, a total heat exchanger core, a high-efficiency filter, an evaporator, a fresh air fan assembly, a supply duct, a first supply duct damper, and a fresh air supply duct assembly; the fresh air return air operation channel includes a return air outlet, a return air duct, a lower duct of the return air foam duct, a high-efficiency filter, a total heat exchanger core, a coarse filter, a condenser, an exhaust fan assembly, an exhaust duct, and an exhaust outlet; The air conditioning mode includes an air conditioning mode fresh air operation channel and an air conditioning mode return air operation channel; the air conditioning mode fresh air operation channel includes a fresh air inlet, a fresh air inlet duct, an upper duct of the fresh air foam duct, a condenser, an exhaust fan assembly, an exhaust duct, and an exhaust outlet; the air conditioning mode return air operation channel includes a return air outlet, a return air duct, an upper duct of the return air foam duct, an evaporator, a fresh air fan assembly, a supply air duct, a second supply air duct damper, and an air conditioning supply air duct assembly; The exhaust mode includes an exhaust mode exhaust operation channel; the exhaust mode exhaust operation channel includes a return air inlet, a return air duct, a bypass ventilation valve, an upper air duct for the fresh air foam duct, a condenser, an exhaust fan assembly, an exhaust duct, and an exhaust outlet; The fresh air mode includes a fresh air operation channel; the fresh air operation channel includes a fresh air inlet, a fresh air inlet duct, a bypass ventilation valve, an upper duct of the return air foam duct, an evaporator, a fresh air fan assembly, a supply air duct, a second supply air duct valve, and an air conditioning supply air duct assembly.

2. The multi-mode whole-house whole-house heat exchanger layout structure with foam ducts according to claim 1, characterized in that: The fresh air foam duct is an integral structure made of foam plastic material and molded in one piece using an injection molding process. The fresh air foam duct includes an upper duct structure, a lower duct shell, a baffle plate, a damper plate, a rotating shaft, a stepper motor, a damper control plate, a fresh air inlet, a side air outlet, and a rear air outlet. The lower duct shell, baffle plate, damper plate, rotating shaft, stepper motor, and damper control plate constitute the lower duct structure assembly. The stepper motor and damper control plate are located on the right side of the lower duct shell. The rotating shaft is positioned in the upper middle part of the lower air duct structure in the left and right directions. The right end of the rotating shaft is fixedly connected to the output shaft of the stepper motor, and the rear side of the air valve plate is fixedly connected to the rotating shaft. The baffle plate is obliquely fixed inside the lower air duct housing. The upper air duct is located above the baffle plate, and the lower air duct is located below the baffle plate. When the stepper motor starts, it drives the damper plate to rotate upward or downward through the rotating shaft. When the damper plate rotates upward to the highest position, it blocks the upper air duct and opens the lower air duct, connecting the fresh air inlet and the side air outlet. When the damper plate rotates downward to the lowest position, it blocks the lower air duct and opens the upper air duct, connecting the fresh air inlet and the rear air outlet.

3. The multi-mode whole-house whole-house heat exchanger layout structure with foam ducts according to claim 1, characterized in that: The other end of the return air duct is connected to the first return air inlet, the second return air inlet, the third return air inlet, the fourth return air inlet, and the fifth return air inlet.

4. The multi-mode whole-house whole-house heat exchanger layout structure with foam ducts according to claim 1, characterized in that: The fresh air supply duct assembly includes a first fresh air outlet, a second fresh air outlet, a third fresh air outlet, a fourth fresh air outlet, and a fifth fresh air outlet; the first, second, third, fourth, and fifth fresh air outlets correspond to the room outlet, living room outlet, kitchen outlet, balcony outlet, and bathroom outlet, respectively. The air conditioning supply duct assembly includes a first air conditioning outlet, a second air conditioning outlet, a third air conditioning outlet, a fourth air conditioning outlet, and a fifth air conditioning outlet; the first, second, third, fourth, and fifth air conditioning outlets correspond to the room outlet, living room outlet, kitchen outlet, balcony outlet, and bathroom outlet, respectively.

5. The multi-mode whole-house whole-house heat exchanger layout structure with foam duct as described in claim 1, characterized in that: When the fresh air mode is running, the bypass ventilation valve is closed, the fresh air valve is open, the return air valve is open, the downflow duct of the fresh air foam duct is open, the air supply motor of the fresh air fan assembly is turned on, the second air supply duct valve is closed, and the first air supply duct valve is open. The fresh air operates according to the fresh air mode fresh air operation channel. At the same time, the downflow duct of the return air foam duct is open, the exhaust fan assembly exhaust motor is turned on, and the return air operates according to the fresh air mode return air operation channel.

6. The multi-mode whole-house whole-house heat exchanger layout structure with foam duct as described in claim 1, characterized in that: When the air conditioning is running, the bypass ventilation valve is closed, the fresh air valve is open, the return air valve is open, the upper air duct of the fresh air foam duct is open, and the exhaust fan motor of the exhaust fan assembly is turned on. The fresh air operates according to the fresh air operation channel of the air conditioning mode. At the same time, the upper air duct of the return air foam duct is open, the air supply motor of the fresh air fan assembly is turned on, the first air supply duct valve is closed, the second air supply duct valve is open, and the return air operates according to the return air operation channel of the air conditioning mode.

7. The multi-mode whole-house whole-house heat exchanger layout structure with foam duct as described in claim 1, characterized in that: When the exhaust mode is running, the bypass ventilation valve is open, the fresh air valve is closed, the return air valve is open, the upper air duct of the fresh air foam duct is open, the supply motor of the fresh air fan assembly is closed, and the exhaust motor of the exhaust fan assembly is open. The exhaust operates according to the exhaust mode exhaust channel.

8. The multi-mode whole-house whole-house heat exchanger layout structure with foam duct as described in claim 1, characterized in that: When operating in 100% fresh air mode, the bypass ventilation valve is open, the fresh air valve is open, the return air valve is closed, the upper air duct of the return air foam duct is open, the exhaust fan motor of the exhaust fan assembly is closed, the supply air motor of the fresh air fan assembly is open, the first supply air duct valve is open, the second supply air duct valve is closed, and the fresh air operates according to the 100% fresh air mode fresh air operation channel.

9. The multi-mode whole-house whole-house heat exchanger layout structure with foam duct as described in claim 1, characterized in that: It also includes a compressor and a throttle valve, wherein the compressor, condenser, throttle valve, and evaporator are connected in sequence, and the evaporator is connected to the compressor; it also includes a water pump, which is located behind the fresh air fan assembly and is used to extract condensate; it also includes an electrical control box and an access door; the electrical control box is located on the outer side of the front left part of the housing, and the compressor, water pump, blower motor, and exhaust motor are all electrically connected to the electrical control box; the access door is located in the middle of the front side of the housing, in front of the heat exchanger core.

10. The multi-mode whole-house whole-house heat exchanger layout structure with foam duct as described in claim 2, characterized in that: When the damper plate is rotated upwards to its highest position, the angle between the damper plate and the horizontal direction is 41-43°; when the damper plate is rotated downwards to its lowest position, the angle between the damper plate and the horizontal direction is 41-43°; the angle between the fixed position of the baffle plate and the horizontal direction is 36-38°; the damper plate has two sets of intersecting diamond-shaped reinforcing ribs on both sides; the lower side of the baffle plate is sealed and fixedly connected to the bottom rear side of the lower air duct structure, and the left and right sides of the baffle plate are sealed and fixedly connected to the inner wall; the bottom of the lower air duct structure has a wire groove for laying the lead wires in the control box; by adopting fresh air foam ducts and return air foam ducts, the supply air net fresh air rate is increased by more than 3%, the cooling capacity is increased by more than 9%, and the cooling efficiency is increased by more than 1.9%.

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