Multi-mode ultra-low energy consumption building kitchen make-up air and exhaust air coupling multi-stage heat recovery system

Abstract

The multi-mode ultra-low energy consumption building kitchen makes-up air exhaust air coupling multi-stage heat recovery system relates to the kitchen ventilation technical field.The present application solves the problems of high operation cost and maintenance workload of the existing kitchen heat recovery system, increases the complexity and installation difficulty of the system, and affects the heat recovery efficiency of the system. In the normal working mode, the make-up air and exhaust air system runs simultaneously, fresh air enters the kitchen through the make-up air channel, and waste air is discharged through the exhaust air channel. When the temperature in the exhaust air exceeds the set threshold, the control system will trigger the heat energy recovery mode. In this mode, the excess heat energy will be introduced into the heat energy storage tank to store the excess heat. During the energy demand peak period, the control system will start the energy supply mode. At this time, the heat energy in the heat energy storage tank can be released to supply the additional heat energy demand. The present application realizes heat energy recovery and efficient use of energy by coupling the kitchen make-up air and exhaust air system, heat exchange and energy storage device.

Description

Technical Field

[0001] This invention relates to the field of kitchen ventilation technology, specifically to a multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with a multi-stage heat recovery system. Background Technology

[0002] Ultra-low energy buildings refer to buildings that adapt to climatic characteristics and natural conditions, employ building envelopes with higher thermal insulation and airtightness, utilize efficient fresh air heat recovery technology, minimize building heating and cooling needs, and fully utilize renewable energy to provide a comfortable indoor environment with less energy consumption while meeting the basic requirements of green buildings. Because ultra-low energy buildings require excellent airtightness, traditional range hoods and exhaust / makeup air systems cannot simultaneously meet the requirements of direct exhaust and makeup air in the kitchen while minimizing heat loss. Therefore, it is necessary to explore exhaust / makeup air systems suitable for passive house kitchens.

[0003] Existing kitchen heat recovery systems require regular maintenance and cleaning to ensure proper operation and efficient heat exchange. This involves manual cleaning of the heat recovery unit and replacement of filters, increasing operating costs and maintenance workload. Heat recovery systems typically require additional equipment and space, such as heat recovery units, filters, fans, and ductwork. The installation and layout of this equipment may require some engineering adjustments, especially for already constructed kitchens, increasing system complexity and installation difficulty. Over long-term operation, the heat recovery unit may experience performance degradation. If not cleaned or maintained promptly, the system's performance and energy efficiency will be affected. The efficiency of heat recovery systems is limited by factors such as the temperature difference between exhaust and fresh air, airflow variations, and the concentration of cooking fumes. These factors affect the system's heat recovery efficiency; although the system can recover some heat energy, it cannot completely eliminate energy waste.

[0004] In summary, existing kitchen heat recovery systems suffer from high operating costs and maintenance workload, which increases system complexity and installation difficulty, and affects the system's heat recovery efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the problems of high operating costs and maintenance workload in existing kitchen heat recovery systems, which increase system complexity and installation difficulty and affect system heat recovery efficiency. In this way, a multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system is provided.

[0006] The technical solution of this invention is:

[0007] A multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with a multi-stage heat recovery system includes an exhaust duct 4, a fresh air duct 10, a high-temperature integrated air-to-air plate heat exchanger 6, a low-temperature integrated air-to-air plate heat exchanger 8, a phase change heat storage device 25, an exhaust bypass inlet duct 28, an exhaust bypass outlet duct, a fresh air bypass inlet duct 17, and a fresh air bypass outlet duct 27.

[0008] The exhaust duct 4 includes a front section, a middle section, and a rear section.

[0009] The air inlet at the front of the exhaust duct is connected to the air outlet of the range hood 1 via an aluminum foil flexible hose 2. The air inlet of the range hood 1 is the exhaust inlet. The air outlet at the front of the exhaust duct is connected to the exhaust inlet of the high-temperature integrated air-to-air plate heat exchanger 6. A first air purification device 3 is installed on the front of the exhaust duct. The air inlet in the middle of the exhaust duct is connected to the exhaust outlet of the high-temperature integrated air-to-air plate heat exchanger 6. The air outlet in the middle of the exhaust duct is connected to the exhaust inlet of the low-temperature integrated air-to-air plate heat exchanger 8. The air inlet at the rear of the exhaust duct is connected to the exhaust outlet of the low-temperature integrated air-to-air plate heat exchanger 8. The air outlet at the rear of the exhaust duct is the exhaust outlet. A waterproof exhaust louver 16 is installed at the exhaust outlet.

[0010] The air inlet of the exhaust bypass inlet pipe 28 is connected to the middle of the front section of the exhaust pipe, the air outlet of the exhaust bypass inlet pipe 28 is connected to the exhaust inlet 254 of the phase change heat storage module of the phase change heat storage device 25, the air inlet of the exhaust bypass outlet pipe is connected to the exhaust outlet 255 of the phase change heat storage module of the phase change heat storage device 25, and the air outlet of the exhaust bypass outlet pipe is connected to the middle of the rear section of the exhaust pipe.

[0011] The fresh air duct 10 includes a front section, a middle section, and a rear section.

[0012] The air inlet at the front of the fresh air duct is the fresh air inlet, and a fresh air rainproof louver 15 is installed at the fresh air inlet. The air outlet at the front of the fresh air duct is connected to the fresh air inlet of the low-temperature integrated air-to-air plate heat exchanger 8. An electronic electrostatic filter 14, an air filter 13, a three-stage fresh air inlet electric double-leaf regulating valve 12, and a second air purification device 11 are installed sequentially on the front of the fresh air duct. The air inlet in the middle section of the fresh air duct is connected to the fresh air outlet of the low-temperature integrated air-to-air plate heat exchanger 8. The air outlet in the middle section of the fresh air duct is connected to the fresh air inlet of the high-temperature integrated air-to-air plate heat exchanger 6. The air inlet at the rear of the fresh air duct is connected to the fresh air outlet of the high-temperature integrated air-to-air plate heat exchanger 6. The air outlet at the rear of the fresh air duct is the fresh air outlet.

[0013] The air inlet of the fresh air bypass inlet pipe 17 is connected to the middle of the front section of the fresh air duct. The air outlet of the fresh air bypass inlet pipe 17 is connected to the fresh air inlet 252 of the phase change heat storage module of the phase change heat storage device 25. The air inlet of the fresh air bypass outlet pipe 27 is connected to the fresh air outlet 253 of the phase change heat storage module of the phase change heat storage device 25. The air outlet of the fresh air bypass outlet pipe 27 is connected to the middle of the middle section of the fresh air duct.

[0014] Furthermore, it also includes a fresh air bypass variable frequency fan 18, a fifth linkage controller 19, a fresh air bypass duct outlet electric double-leaf regulating valve 20, and a fresh air bypass duct inlet electric double-leaf regulating valve 26. The fresh air bypass inlet duct 17 is equipped with the fresh air bypass variable frequency fan 18 and the fresh air bypass duct outlet electric double-leaf regulating valve 20 in sequence. The fresh air bypass variable frequency fan 18 is connected to the fifth linkage controller 19 through a wire, and the fresh air bypass outlet duct 27 is equipped with the fresh air bypass duct inlet electric double-leaf regulating valve 26.

[0015] Furthermore, it also includes an exhaust bypass variable frequency fan 22, a sixth linkage controller 23, a second exhaust bypass pipe outlet electric double-leaf regulating valve 21, a first exhaust bypass pipe inlet electric double-leaf regulating valve 24, a second exhaust bypass pipe inlet electric double-leaf regulating valve 30, and a first exhaust bypass pipe outlet electric double-leaf regulating valve 9. The second exhaust bypass pipe inlet electric double-leaf regulating valve 30 is installed on the inlet side of the exhaust bypass inlet pipe 28, and the exhaust bypass variable frequency fan 22 and the second exhaust bypass pipe outlet electric double-leaf regulating valve 21 are installed sequentially on the outlet side of the exhaust bypass inlet pipe 28. The exhaust bypass variable frequency fan 22 is connected to the sixth linkage controller 23 through a wire. The first exhaust bypass pipe inlet electric double-leaf regulating valve 24 is installed on the inlet side of the exhaust bypass outlet pipe, and the first exhaust bypass pipe outlet electric double-leaf regulating valve 9 is installed on the outlet side of the exhaust bypass outlet pipe.

[0016] Furthermore, it also includes a primary exhaust inlet electrically operated double-leaf regulating valve 5, a primary exhaust outlet electrically operated double-leaf regulating valve 604, a primary fresh air inlet electrically operated double-leaf regulating valve 7, and a primary fresh air outlet electrically operated double-leaf regulating valve 606.

[0017] The air outlet at the front of the exhaust duct is connected to the exhaust inlet of the high-temperature integrated air-to-air plate heat exchanger 6, the air inlet in the middle of the exhaust duct is connected to the exhaust outlet of the high-temperature integrated air-to-air plate heat exchanger 6, the air outlet in the middle of the fresh air duct is connected to the fresh air inlet of the high-temperature integrated air-to-air plate heat exchanger 6, and the air inlet at the rear of the fresh air duct is connected to the fresh air outlet of the high-temperature integrated air-to-air plate heat exchanger 6 via expansion joints.

[0018] A primary exhaust inlet electric split-leaf regulating valve 5 is installed at the end of the exhaust duct near the exhaust inlet of the high-temperature integrated air-to-air plate heat exchanger 6, and a primary exhaust outlet electric split-leaf regulating valve 604 is installed at the end of the exhaust duct near the exhaust outlet of the high-temperature integrated air-to-air plate heat exchanger 6.

[0019] A primary fresh air inlet electric double-leaf regulating valve 7 is installed at the end of the fresh air duct near the high-temperature integrated air-to-air plate heat exchanger 6, and a primary fresh air outlet electric double-leaf regulating valve 606 is installed at the end of the fresh air duct near the high-temperature integrated air-to-air plate heat exchanger 6.

[0020] Furthermore, it also includes a secondary fresh air inlet electrically operated double-leaf regulating valve 802, a secondary fresh air outlet electrically operated double-leaf regulating valve 804, and a secondary exhaust outlet electrically operated double-leaf regulating valve 808.

[0021] A two-stage exhaust outlet electric split-leaf regulating valve 808 is installed at one end of the exhaust outlet of the exhaust duct near the low-temperature integrated air-to-air plate heat exchanger 8.

[0022] A two-stage fresh air inlet electric split-leaf regulating valve 802 is installed at the end of the fresh air duct near the fresh air inlet of the low-temperature integrated air-to-air plate heat exchanger 8, and a two-stage fresh air outlet electric split-leaf regulating valve 804 is installed at the end of the fresh air duct near the fresh air outlet of the low-temperature integrated air-to-air plate heat exchanger 8.

[0023] Furthermore, the first air purification device 3 includes a first hexagonal screw 301, an air purification device cover plate 302, heat insulation material 303, an oil stain adsorbent 304, a first filter screen 305, an activated carbon adsorption device 306, a second filter screen 307, and a mesh baffle 308. A rectangular opening is provided in the middle of the front section of the exhaust duct. Inside the duct at the rectangular opening of the front section of the exhaust duct, the oil stain adsorbent 304, the first filter screen 305, the activated carbon adsorption device 306, the second filter screen 307, and the mesh baffle 308 are installed in sequence. The air purification device cover plate 302 and the heat insulation material 303 are installed in sequence from the outside to the inside of the rectangular opening of the front section of the exhaust duct. The air purification device cover plate 302 is arbitrarily set with the rectangular opening of the front section of the exhaust duct. The air purification device cover plate 302 is sealed and fixedly connected to the front section of the exhaust duct by multiple first hexagonal screws 301.

[0024] Furthermore, the high-temperature integrated gas-to-gas plate heat exchanger 6 includes a high-temperature integrated gas-to-gas plate heat exchanger shell, a first cross heat exchange core 601, a primary exhaust high-temperature integrated variable frequency fan 602, a first linkage controller 603, a primary fresh air high-temperature integrated variable frequency fan 605, and a second linkage controller 607.

[0025] The high-temperature integrated air-to-air plate heat exchanger has a rectangular shell structure. On one side of the high-temperature integrated air-to-air plate heat exchanger shell, a fresh air outlet and an exhaust air inlet are machined sequentially from front to back along the width direction. On the other side of the high-temperature integrated air-to-air plate heat exchanger shell, an exhaust air outlet and a fresh air inlet are machined sequentially from front to back along the width direction.

[0026] The high-temperature integrated gas-to-gas plate heat exchanger has a first cross heat exchange core 601 installed inside its shell. The first cross heat exchange core 601 divides the high-temperature integrated gas-to-gas plate heat exchanger shell into four independent cavities. The four independent cavities correspond one-to-one with the fresh air outlet, exhaust air inlet, exhaust air outlet and fresh air inlet of the high-temperature integrated gas-to-gas plate heat exchanger 6.

[0027] The independent cavity corresponding to the fresh air outlet is equipped with a primary fresh air high temperature integrated variable frequency fan 605, which is connected to the second linkage controller 607 via wires.

[0028] The independent cavity corresponding to the exhaust outlet is equipped with a primary exhaust high-temperature integrated variable frequency fan 602, which is connected to the first linkage controller 603 via wires.

[0029] Furthermore, the low-temperature integrated air-to-air plate heat exchanger 8 includes a low-temperature integrated air-to-air plate heat exchanger shell, a second cross-type heat exchange core 801, a third linkage controller 803, a secondary fresh air low-temperature integrated variable frequency fan 805, a fourth linkage controller 806, and a secondary exhaust low-temperature integrated variable frequency fan 807.

[0030] The shell of the low-temperature integrated air-to-air plate heat exchanger is a rectangular shell structure. On one side of the shell, the exhaust air inlet and the fresh air outlet are processed sequentially from front to back along the width direction. On the other side of the shell, the fresh air inlet and the exhaust air outlet are processed sequentially from front to back along the width direction.

[0031] The low-temperature integrated gas-to-gas plate heat exchanger has a second cross heat exchange core 801 installed inside its shell. The second cross heat exchange core 801 divides the low-temperature integrated gas-to-gas plate heat exchanger shell into four independent cavities. The four independent cavities correspond one-to-one with the exhaust inlet, fresh air outlet, fresh air inlet and exhaust outlet of the low-temperature integrated gas-to-gas plate heat exchanger 8.

[0032] The independent cavity corresponding to the fresh air outlet is equipped with a secondary fresh air low-temperature integrated variable frequency fan 805, which is connected to the third linkage controller 803 via wires.

[0033] The independent cavity corresponding to the exhaust outlet is equipped with a secondary exhaust low-temperature integrated variable frequency fan 807, which is connected to the fourth linkage controller 806 via wires.

[0034] Furthermore, the phase change thermal energy storage device 25 includes a phase change thermal energy storage device shell, a phase change thermal energy storage module 251, a detachable thermal insulation cover plate 256 for the phase change thermal energy storage module, and a second hexagonal screw 257.

[0035] The outer shell of the phase change thermal energy storage device is a rectangular shell structure. The left and right ends of the outer shell of the phase change thermal energy storage device are respectively machined with a fresh air inlet 252 and a fresh air outlet 253 of the phase change thermal energy storage module, which are connected to the inner cavity of the outer shell of the phase change thermal energy storage device. The front and rear ends of the outer shell of the phase change thermal energy storage device are respectively machined with an exhaust air inlet 254 and an exhaust air outlet 255 of the phase change thermal energy storage module, which are connected to the inner cavity of the outer shell of the phase change thermal energy storage device.

[0036] The phase change thermal storage module 251 is installed inside the outer shell of the phase change thermal storage device. A rectangular notch is opened at the top of the outer shell of the phase change thermal storage device. The removable insulation cover 256 of the phase change thermal storage module is fastened to the rectangular notch. The removable insulation cover 256 of the phase change thermal storage module is connected to the outer shell of the phase change thermal storage device by multiple second hexagonal screws 257.

[0037] Furthermore, it also includes an intelligent controller 29, which is connected via multiple wires to the following valves: the primary exhaust inlet electric double-leaf regulating valve 5, the primary exhaust outlet electric double-leaf regulating valve 604, the primary fresh air outlet electric double-leaf regulating valve 606, the primary fresh air inlet electric double-leaf regulating valve 7, the secondary fresh air inlet electric double-leaf regulating valve 802, the secondary exhaust outlet electric double-leaf regulating valve 808, the primary exhaust bypass duct outlet electric double-leaf regulating valve 9, and the tertiary fresh air inlet electric double-leaf regulating valve 9. The following components are connected: valve 12, electric double-leaf regulating valve 20 at the outlet of the fresh air bypass duct, electric double-leaf regulating valve 21 at the outlet of the second exhaust bypass duct, electric double-leaf regulating valve 24 at the inlet of the first exhaust bypass duct, electric double-leaf regulating valve 26 at the inlet of the fresh air bypass duct, electric double-leaf regulating valve 30 at the inlet of the second exhaust bypass duct, first linkage controller 603, second linkage controller 607, third linkage controller 803, fourth linkage controller 806, fifth linkage controller 19, and sixth linkage controller 23.

[0038] Compared with the prior art, the present invention has the following advantages:

[0039] 1. This invention can achieve ultra-low energy consumption: The system adopts multi-stage heat recovery technology, which can efficiently recover and utilize the heat energy in the kitchen exhaust. By combining the use of heat recovery unit and heat energy storage tank, the system can minimize energy consumption and significantly reduce the energy consumption of building kitchens.

[0040] 2. This invention enables intelligent control: The system is equipped with an intelligent control console and multiple sensors, such as an indoor PM2.5 sensor, an outdoor PM2.5 sensor, an indoor temperature sensor, an indoor humidity sensor, and a CO2 sensor. These sensors can monitor environmental parameters in real time and automatically adjust the supply and exhaust air volume as needed to maintain indoor air quality and comfort.

[0041] 3. This invention has an air purification function: The system is equipped with multiple filtration devices such as a coarse filter, an oil filter, a high-efficiency air filter, and an electronic electrostatic filter, which can effectively remove particulate matter, fumes, and harmful gases from the air and provide clean and healthy indoor air.

[0042] 4. This invention employs a compact design: the heat recovery unit, fan unit, filter, and storage tank in the system are all designed with a compact footprint, making them suitable for kitchens with limited space. This compact design not only saves space but also facilitates system installation and maintenance.

[0043] 5. This invention has the advantages of being environmentally friendly and healthy: by reducing energy consumption and providing high-quality indoor air, the system helps reduce carbon emissions and indoor air pollution, which has a positive impact on the environment and the health of residents.

[0044] 6. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system of the present invention has advantages such as energy saving, intelligence, environmental protection and health, which helps to improve the energy efficiency and indoor environmental quality of building kitchens, while meeting the needs of sustainable development and healthy living. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system of the present invention;

[0046] Figure 2 This is a schematic diagram of the phase change thermal energy storage device 25 of the present invention;

[0047] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0048] Figure 4 This is a schematic diagram of the structure of the high-temperature integrated gas-to-gas plate heat exchanger 6 of the present invention;

[0049] Figure 5 yes Figure 4 Cross-sectional view at BB;

[0050] Figure 6 This is a schematic diagram of the structure of the first air purification device 3 of the present invention.

[0051] In the diagram: 1-Range hood, 2-Aluminum foil flexible hose, 3-First air purification device, 301-First hexagonal screw, 302-Air purification device cover, 303-Insulation material, 304-Oil adsorbent, 305-First filter, 306-Activated carbon adsorption device, 307-Second filter, 308-Mesh baffle, 4-Exhaust duct, 5-Primary exhaust inlet electric double-leaf regulating valve, 6-High-temperature integrated air-to-air plate heat exchanger, 601-First cross-type heat exchange core, 602-Primary exhaust high-temperature integrated variable frequency fan, 603-First linkage controller, 604-Primary exhaust outlet electric double-leaf regulating valve 605-First-stage fresh air high-temperature integrated variable frequency fan; 606-First-stage fresh air outlet electric double-leaf regulating valve; 607-Second linkage controller; 7-First-stage fresh air inlet electric double-leaf regulating valve; 8-Low-temperature integrated air-to-air plate heat exchanger; 801-Second cross-type heat exchange core; 802-Second-stage fresh air inlet electric double-leaf regulating valve; 803-Third linkage controller; 804-Second-stage fresh air outlet electric double-leaf regulating valve; 805-Second-stage fresh air low-temperature integrated variable frequency fan; 806-Fourth linkage controller; 807-Second-stage exhaust low-temperature integrated variable frequency fan; 808-Second-stage exhaust outlet electric... 9-Electric double-leaf regulating valve for first exhaust bypass duct outlet; 10-Fresh air duct; 11-Second air purification device; 12-Electric double-leaf regulating valve for third-stage fresh air inlet; 13-Air filter; 14-Electronic electrostatic filter; 15-Rainproof louver for fresh air; 16-Waterproof louver for exhaust; 17-Fresh air bypass duct; 18-Fresh air bypass variable frequency fan; 19-Fifth linkage controller; 20-Electric double-leaf regulating valve for fresh air bypass duct outlet; 21-Electric double-leaf regulating valve for second exhaust bypass duct outlet; 22-Exhaust air bypass variable frequency fan; 23-Sixth linkage controller. 24- First exhaust bypass duct inlet electric double-leaf regulating valve, 25- Phase change thermal storage device, 251- Phase change thermal storage module, 252- Phase change thermal storage module fresh air inlet, 253- Phase change thermal storage module fresh air outlet, 254- Phase change thermal storage module exhaust inlet, 255- Phase change thermal storage module exhaust outlet, 256- Phase change thermal storage module removable insulation cover, 257- Second hexagonal screw, 26- Fresh air bypass duct inlet electric double-leaf regulating valve, 27- Fresh air bypass outlet duct, 28- Exhaust bypass inlet duct, 29- Intelligent controller, 30- Second exhaust bypass duct inlet electric double-leaf regulating valve. Detailed Implementation

[0052] Specific implementation method one: Combining Figures 1 to 6This embodiment describes a multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with a multi-stage heat recovery system. It includes an exhaust duct 4, a fresh air duct 10, a high-temperature integrated air-to-air plate heat exchanger 6, a low-temperature integrated air-to-air plate heat exchanger 8, a phase change heat storage device 25, an exhaust bypass inlet duct 28, an exhaust bypass outlet duct, a fresh air bypass inlet duct 17, and a fresh air bypass outlet duct 27.

[0053] The exhaust duct 4 includes a front section, a middle section, and a rear section.

[0054] The air inlet at the front of the exhaust duct is connected to the air outlet of the range hood 1 via an aluminum foil flexible hose 2. The air inlet of the range hood 1 is the exhaust inlet. The air outlet at the front of the exhaust duct is connected to the exhaust inlet of the high-temperature integrated air-to-air plate heat exchanger 6. A first air purification device 3 is installed on the front of the exhaust duct. The air inlet in the middle of the exhaust duct is connected to the exhaust outlet of the high-temperature integrated air-to-air plate heat exchanger 6. The air outlet in the middle of the exhaust duct is connected to the exhaust inlet of the low-temperature integrated air-to-air plate heat exchanger 8. The air inlet at the rear of the exhaust duct is connected to the exhaust outlet of the low-temperature integrated air-to-air plate heat exchanger 8. The air outlet at the rear of the exhaust duct is the exhaust outlet. A waterproof exhaust louver 16 is installed at the exhaust outlet.

[0055] The air inlet of the exhaust bypass inlet pipe 28 is connected to the middle of the front section of the exhaust pipe, the air outlet of the exhaust bypass inlet pipe 28 is connected to the exhaust inlet 254 of the phase change heat storage module of the phase change heat storage device 25, the air inlet of the exhaust bypass outlet pipe is connected to the exhaust outlet 255 of the phase change heat storage module of the phase change heat storage device 25, and the air outlet of the exhaust bypass outlet pipe is connected to the middle of the rear section of the exhaust pipe.

[0056] The fresh air duct 10 includes a front section, a middle section, and a rear section.

[0057] The air inlet at the front of the fresh air duct is the fresh air inlet, and a fresh air rainproof louver 15 is installed at the fresh air inlet. The air outlet at the front of the fresh air duct is connected to the fresh air inlet of the low-temperature integrated air-to-air plate heat exchanger 8. An electronic electrostatic filter 14, an air filter 13, a three-stage fresh air inlet electric double-leaf regulating valve 12, and a second air purification device 11 are installed sequentially on the front of the fresh air duct. The air inlet in the middle section of the fresh air duct is connected to the fresh air outlet of the low-temperature integrated air-to-air plate heat exchanger 8. The air outlet in the middle section of the fresh air duct is connected to the fresh air inlet of the high-temperature integrated air-to-air plate heat exchanger 6. The air inlet at the rear of the fresh air duct is connected to the fresh air outlet of the high-temperature integrated air-to-air plate heat exchanger 6. The air outlet at the rear of the fresh air duct is the fresh air outlet.

[0058] The air inlet of the fresh air bypass inlet pipe 17 is connected to the middle of the front section of the fresh air duct. The air outlet of the fresh air bypass inlet pipe 17 is connected to the fresh air inlet 252 of the phase change heat storage module of the phase change heat storage device 25. The air inlet of the fresh air bypass outlet pipe 27 is connected to the fresh air outlet 253 of the phase change heat storage module of the phase change heat storage device 25. The air outlet of the fresh air bypass outlet pipe 27 is connected to the middle of the middle section of the fresh air duct.

[0059] Specific Implementation Method Two: Combining Figure 1 This embodiment further includes a fresh air bypass variable frequency fan 18, a fifth linkage controller 19, a fresh air bypass duct outlet electrically operated double-leaf regulating valve 20, and a fresh air bypass duct inlet electrically operated double-leaf regulating valve 26. The fresh air bypass inlet duct 17 is sequentially equipped with the fresh air bypass variable frequency fan 18 and the fresh air bypass duct outlet electrically operated double-leaf regulating valve 20. The fresh air bypass variable frequency fan 18 is connected to the fifth linkage controller 19 via a wire, and the fresh air bypass outlet duct 27 is equipped with the fresh air bypass duct inlet electrically operated double-leaf regulating valve 26.

[0060] Other components and connections are the same as in Specific Implementation Method 1.

[0061] In this embodiment, a retractable aluminum foil flexible hose is used to connect the air inlet at the front end of the exhaust duct to the air outlet of the range hood 1. The retractable aluminum foil flexible hose is made of aluminum foil and elastic material, and has good high temperature resistance, good flexibility and extensibility, is lightweight and easy to install, has good flame retardant properties, and reduces vibration and noise.

[0062] In this embodiment, the exhaust duct 4 is made of aluminum alloy, which makes the exhaust duct 4 lightweight, corrosion resistant and easy to process.

[0063] Specific implementation method three: Combining Figure 1 This embodiment further includes an exhaust bypass variable frequency fan 22, a sixth linkage controller 23, a second exhaust bypass pipe outlet electric double-leaf regulating valve 21, a first exhaust bypass pipe inlet electric double-leaf regulating valve 24, a second exhaust bypass pipe inlet electric double-leaf regulating valve 30, and a first exhaust bypass pipe outlet electric double-leaf regulating valve 9. The second exhaust bypass pipe inlet electric double-leaf regulating valve 30 is installed on the inlet side of the exhaust bypass inlet pipe 28, and the exhaust bypass variable frequency fan 22 and the second exhaust bypass pipe outlet electric double-leaf regulating valve 21 are sequentially installed on the outlet side of the exhaust bypass inlet pipe 28. The exhaust bypass variable frequency fan 22 is connected to the sixth linkage controller 23 via a wire. The first exhaust bypass pipe inlet electric double-leaf regulating valve 24 is installed on the inlet side of the exhaust bypass outlet pipe, and the first exhaust bypass pipe outlet electric double-leaf regulating valve 9 is installed on the outlet side of the exhaust bypass outlet pipe.

[0064] Other components and connections are the same as in specific implementation method one or two.

[0065] Specific implementation method four: Combination Figure 1 , Figure 4 and Figure 5 This embodiment further includes a primary exhaust inlet electrically operated double-leaf multi-blade regulating valve 5, a primary exhaust outlet electrically operated double-leaf multi-blade regulating valve 604, a primary fresh air inlet electrically operated double-leaf multi-blade regulating valve 7, and a primary fresh air outlet electrically operated double-leaf multi-blade regulating valve 606.

[0066] The air outlet at the front of the exhaust duct is connected to the exhaust inlet of the high-temperature integrated air-to-air plate heat exchanger 6, the air inlet in the middle of the exhaust duct is connected to the exhaust outlet of the high-temperature integrated air-to-air plate heat exchanger 6, the air outlet in the middle of the fresh air duct is connected to the fresh air inlet of the high-temperature integrated air-to-air plate heat exchanger 6, and the air inlet at the rear of the fresh air duct is connected to the fresh air outlet of the high-temperature integrated air-to-air plate heat exchanger 6 via expansion joints.

[0067] A primary exhaust inlet electric split-leaf regulating valve 5 is installed at the end of the exhaust duct near the exhaust inlet of the high-temperature integrated air-to-air plate heat exchanger 6, and a primary exhaust outlet electric split-leaf regulating valve 604 is installed at the end of the exhaust duct near the exhaust outlet of the high-temperature integrated air-to-air plate heat exchanger 6.

[0068] A primary fresh air inlet electric double-leaf regulating valve 7 is installed at the end of the fresh air duct near the high-temperature integrated air-to-air plate heat exchanger 6, and a primary fresh air outlet electric double-leaf regulating valve 606 is installed at the end of the fresh air duct near the high-temperature integrated air-to-air plate heat exchanger 6.

[0069] Other components and connections are the same as in specific implementation methods one, two, or three.

[0070] In this embodiment, the high-temperature integrated air-to-air plate heat exchanger 6 connects the exhaust duct and the fresh air duct through the expansion joint's expansion and contraction properties. Using an expansion joint connection can absorb the thermal expansion and contraction of the duct caused by temperature changes, reducing stress and vibration, and is suitable for situations with large temperature variations.

[0071] Specific Implementation Method Five: Combining Figure 1 This embodiment further includes a secondary fresh air inlet electrically operated double-leaf regulating valve 802, a secondary fresh air outlet electrically operated double-leaf regulating valve 804, and a secondary exhaust outlet electrically operated double-leaf regulating valve 808.

[0072] A two-stage exhaust outlet electric split-leaf regulating valve 808 is installed at one end of the exhaust outlet of the exhaust duct near the low-temperature integrated air-to-air plate heat exchanger 8.

[0073] A two-stage fresh air inlet electric split-leaf regulating valve 802 is installed at the end of the fresh air duct near the fresh air inlet of the low-temperature integrated air-to-air plate heat exchanger 8, and a two-stage fresh air outlet electric split-leaf regulating valve 804 is installed at the end of the fresh air duct near the fresh air outlet of the low-temperature integrated air-to-air plate heat exchanger 8.

[0074] Other components and connections are the same as in specific implementation methods one, two, three, or four.

[0075] Specific Implementation Method Six: Combination Figure 1 and Figure 6 This embodiment describes a first air purification device 3 comprising a first hexagonal screw 301, an air purification device cover 302, heat insulation material 303, an oil adsorbent 304, a first filter 305, an activated carbon adsorption device 306, a second filter 307, and a mesh baffle 308. A rectangular opening is provided in the middle of the front section of the exhaust duct. Inside the duct at the rectangular opening, the oil adsorbent 304, the first filter 305, the activated carbon adsorption device 306, the second filter 307, and the mesh baffle 308 are sequentially installed. From the outside to the inside, the air purification device cover 302 and the heat insulation material 303 are sequentially installed at the rectangular opening of the front section of the exhaust duct. The air purification device cover 302 is arbitrarily positioned relative to the rectangular opening of the front section of the exhaust duct. The air purification device cover 302 is sealed and fixedly connected to the front section of the exhaust duct by multiple first hexagonal screws 301.

[0076] Other components and connections are the same as in specific implementation methods one, two, three, four, or five.

[0077] Specific implementation method seven: Combination Figure 1 , Figure 4 and Figure 5 This embodiment describes a high-temperature integrated gas-to-gas plate heat exchanger 6, which includes a high-temperature integrated gas-to-gas plate heat exchanger shell, a first cross-type heat exchange core 601, a primary exhaust high-temperature integrated variable frequency fan 602, a first linkage controller 603, a primary fresh air high-temperature integrated variable frequency fan 605, and a second linkage controller 607.

[0078] The high-temperature integrated air-to-air plate heat exchanger has a rectangular shell structure. On one side of the high-temperature integrated air-to-air plate heat exchanger shell, a fresh air outlet and an exhaust air inlet are machined sequentially from front to back along the width direction. On the other side of the high-temperature integrated air-to-air plate heat exchanger shell, an exhaust air outlet and a fresh air inlet are machined sequentially from front to back along the width direction.

[0079] The high-temperature integrated gas-to-gas plate heat exchanger has a first cross heat exchange core 601 installed inside its shell. The first cross heat exchange core 601 divides the high-temperature integrated gas-to-gas plate heat exchanger shell into four independent cavities. The four independent cavities correspond one-to-one with the fresh air outlet, exhaust air inlet, exhaust air outlet and fresh air inlet of the high-temperature integrated gas-to-gas plate heat exchanger 6.

[0080] The independent cavity corresponding to the fresh air outlet is equipped with a primary fresh air high temperature integrated variable frequency fan 605, which is connected to the second linkage controller 607 via wires.

[0081] The independent cavity corresponding to the exhaust outlet is equipped with a primary exhaust high-temperature integrated variable frequency fan 602, which is connected to the first linkage controller 603 via wires.

[0082] Other components and connections are the same as in specific implementation methods one, two, three, four, five, or six.

[0083] In this embodiment, the first cross-type heat exchange core 601 consists of a series of staggered metal plates, which allows for higher heat exchange efficiency. The surfaces of the metal plates are corrugated or cross-shaped to increase surface area and promote turbulent fluid flow. Gaps exist between each metal plate, forming channels for gas flow. The metal plates are manufactured using reinforced stamping and edge-sealing technology, and each edge joint is secondary-sealed using a high-temperature, high-pressure resistant colloid to reduce air leakage. A sealing gasket or sealing strip is placed between the inner metal plates and the outer shell of the high-temperature integrated gas-to-gas plate heat exchanger. By applying pressure from the outer shell to the sealing gasket, it fills the gap between the metal plates and the outer shell, achieving a sealing effect.

[0084] The high-temperature integrated gas-to-gas plate heat exchanger's outer shell is made of 304 stainless steel, offering high weather resistance and oxidation resistance, enabling it to withstand the high temperatures and humidity of a kitchen environment. Rubber sealing rings or gaskets are used at the shell's joints to ensure airtightness. Rubber seals provide good sealing performance and can withstand certain deformation and vibration. The various parts of the shell are securely connected using bolts and nuts. Bolt tightening provides a reliable sealing effect, especially suitable for scenarios requiring frequent disassembly and maintenance.

[0085] In this embodiment, the primary fresh air high-temperature integrated variable frequency fan 605 integrates the heat recovery unit and the fan unit together to form a compact unit structure. An appropriate gap is ensured between the fan unit and the heat recovery unit so that air can smoothly pass through the heat recovery unit for heat exchange.

[0086] The primary fresh air high-temperature integrated variable frequency fan 605 selects a high-efficiency, variable frequency, and low-noise fan unit to provide appropriate air volume and air pressure.

[0087] Specific implementation method eight: Combination Figure 1 This embodiment describes a low-temperature integrated gas-to-gas plate heat exchanger 8, which includes a low-temperature integrated gas-to-gas plate heat exchanger shell, a second cross-type heat exchange core 801, a third linkage controller 803, a secondary fresh air low-temperature integrated variable frequency fan 805, a fourth linkage controller 806, and a secondary exhaust low-temperature integrated variable frequency fan 807.

[0088] The shell of the low-temperature integrated air-to-air plate heat exchanger is a rectangular shell structure. On one side of the shell, the exhaust air inlet and the fresh air outlet are processed sequentially from front to back along the width direction. On the other side of the shell, the fresh air inlet and the exhaust air outlet are processed sequentially from front to back along the width direction.

[0089] The low-temperature integrated gas-to-gas plate heat exchanger has a second cross heat exchange core 801 installed inside its shell. The second cross heat exchange core 801 divides the low-temperature integrated gas-to-gas plate heat exchanger shell into four independent cavities. The four independent cavities correspond one-to-one with the exhaust inlet, fresh air outlet, fresh air inlet and exhaust outlet of the low-temperature integrated gas-to-gas plate heat exchanger 8.

[0090] The independent cavity corresponding to the fresh air outlet is equipped with a secondary fresh air low-temperature integrated variable frequency fan 805, which is connected to the third linkage controller 803 via wires.

[0091] The independent cavity corresponding to the exhaust outlet is equipped with a secondary exhaust low-temperature integrated variable frequency fan 807, which is connected to the fourth linkage controller 806 via wires.

[0092] Other components and connections are the same as in specific implementation methods one, two, three, four, five, six, or seven.

[0093] In this embodiment, the low-temperature integrated gas-to-gas plate heat exchanger 8 is specifically designed to handle the heat energy in the low-temperature flue gas that cannot be recovered in the high-temperature integrated gas-to-gas plate heat exchanger 6. The low-temperature integrated gas-to-gas plate heat exchanger 8 employs a more refined heat exchanger design to further improve heat recovery efficiency.

[0094] Specific Implementation Method Nine: Combining Figure 1 , Figure 2 and Figure 3 This embodiment describes the phase change thermal storage device 25, which includes a phase change thermal storage device shell, a phase change thermal storage module 251, a detachable thermal insulation cover plate 256 for the phase change thermal storage module, and a second hexagonal screw 257.

[0095] The outer shell of the phase change thermal energy storage device is a rectangular shell structure. The left and right ends of the outer shell of the phase change thermal energy storage device are respectively machined with a fresh air inlet 252 and a fresh air outlet 253 of the phase change thermal energy storage module, which are connected to the inner cavity of the outer shell of the phase change thermal energy storage device. The front and rear ends of the outer shell of the phase change thermal energy storage device are respectively machined with an exhaust air inlet 254 and an exhaust air outlet 255 of the phase change thermal energy storage module, which are connected to the inner cavity of the outer shell of the phase change thermal energy storage device.

[0096] The phase change thermal storage module 251 is installed inside the outer shell of the phase change thermal storage device. A rectangular notch is opened at the top of the outer shell of the phase change thermal storage device. The removable insulation cover 256 of the phase change thermal storage module is fastened to the rectangular notch. The removable insulation cover 256 of the phase change thermal storage module is connected to the outer shell of the phase change thermal storage device by multiple second hexagonal screws 257.

[0097] Other components and connections are the same as in specific implementation methods one, two, three, four, five, six, seven, or eight.

[0098] In this embodiment, the outer shell of the phase change thermal energy storage device is generally made of corrosion-resistant and high-temperature-resistant materials, such as stainless steel or carbon steel. The outer shell should have sufficient strength and rigidity to protect the internal phase change material and withstand system pressure. The internal container is the space for storing the phase change material and is usually made of metallic materials with good thermal conductivity. The container has sealing properties to prevent leakage of the phase change material and can withstand the expansion and contraction of the phase change material. The phase change material is a heat storage wax. To transfer heat energy more efficiently, the phase change thermal energy storage tank is usually equipped with a heat exchanger. The heat exchanger can contact the phase change material through pipes and heat exchange surfaces to achieve heat energy transfer and storage.

[0099] Specific Implementation Method Ten: Combining Figure 1 This embodiment further includes an intelligent controller 29, which is connected via multiple wires to the following valves: a primary exhaust inlet electric double-leaf regulating valve 5, a primary exhaust outlet electric double-leaf regulating valve 604, a primary fresh air outlet electric double-leaf regulating valve 606, a primary fresh air inlet electric double-leaf regulating valve 7, a secondary fresh air inlet electric double-leaf regulating valve 802, a secondary exhaust outlet electric double-leaf regulating valve 808, a primary exhaust bypass duct outlet electric double-leaf regulating valve 9, and a tertiary fresh air inlet electric double-leaf regulating valve 606. The following components are connected: multi-leaf regulating valve 12, electric double-leaf regulating valve 20 at the outlet of the fresh air bypass duct, electric double-leaf regulating valve 21 at the outlet of the second exhaust bypass duct, electric double-leaf regulating valve 24 at the inlet of the first exhaust bypass duct, electric double-leaf regulating valve 26 at the inlet of the fresh air bypass duct, electric double-leaf regulating valve 30 at the inlet of the second exhaust bypass duct, first linkage controller 603, second linkage controller 607, third linkage controller 803, fourth linkage controller 806, fifth linkage controller 19, and sixth linkage controller 23.

[0100] Other components and connections are the same as those in embodiments one, two, three, four, five, six, seven, eight, or nine.

[0101] In this embodiment, the intelligent controller 29 introduces an intelligent control system to monitor and adjust the fan's operating speed and the heat recovery unit's operating status. Based on real-time demands and system parameters, it automatically adjusts the fan speed and power to optimize heat recovery efficiency.

[0102] This embodiment of the multi-mode ultra-low energy building kitchen make-up air and smoke exhaust coupled with a multi-stage heat recovery system installs appropriate sensors to monitor the kitchen environment and the operating parameters of the heat recovery system, including temperature sensors, humidity sensors, and PM2.5 sensors. These sensors will collect data in real time and provide it to the intelligent control system for analysis and decision-making.

[0103] The system utilizes data analytics and adaptive algorithms to process sensor data. By analyzing real-time data, the intelligent control system can understand changes in the kitchen environment and the operational status of the heat recovery system. Based on this data, the system can automatically adjust its operating mode and parameter settings to maximize heat recovery efficiency.

[0104] Based on sensor data and algorithm analysis, the intelligent control system can adjust parameters of the heat recovery system in real time, such as fan speed and temperature difference of the heat recovery unit. Through a feedback control mechanism, the system can continuously monitor and adjust parameters to maintain optimal heat recovery efficiency.

[0105] Working principle

[0106] Combination Figures 1 to 6 The working principle of the multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system of the present invention is explained as follows:

[0107] This invention has three working modes: normal working mode, heat recovery mode, and energy supply mode.

[0108] Normal operating mode: When the range hood 1 is started, the three-stage fresh air inlet electric double-leaf regulating valve 12 is activated in conjunction. The indoor temperature and humidity, and CO2 concentration detected by the integrated CO2 sensor unit do not meet the standards, requiring the introduction of fresh air to activate the normal operating mode. The intelligent controller 29 issues a normal operating mode command, and the high-temperature integrated air-to-air plate heat exchanger 6 and the low-temperature integrated air-to-air plate heat exchanger 8 begin operation. Simultaneously, the primary fresh air high-temperature integrated variable frequency fan 605, the primary exhaust high-temperature integrated variable frequency fan 602, the secondary fresh air low-temperature integrated variable frequency fan 805, the secondary exhaust low-temperature integrated variable frequency fan 807, and the air filter 13 are activated. When the outdoor PM2.5 sensor detects poor outdoor air quality, the electronic electrostatic filter 14 is activated.

[0109] Heat recovery mode: When the range hood 1 is started, the three-stage fresh air inlet electric double-leaf regulating valve 12 is activated in conjunction. If the indoor temperature is too high, the first-stage exhaust air inlet electric double-leaf regulating valve 5 is closed, and the second exhaust air bypass pipe inlet electric double-leaf regulating valve 30 is opened. Exhaust air enters from the exhaust air bypass inlet pipe 28, and fresh air enters from the fresh air bypass pipe 17. Heat exchange occurs in the phase change heat storage device 25, and the heat is stored in the phase change heat storage device 25.

[0110] Energy supply mode: When the range hood 1 is off, the indoor temperature and humidity and CO2 concentration are monitored by the integrated CO2 sensor unit. If the indoor temperature and humidity and CO2 concentration do not meet the standards, fresh air needs to be introduced and the energy supply mode is activated.

[0111] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system, characterized in that: It includes an exhaust duct (4), a fresh air duct (10), a high-temperature integrated air-to-air plate heat exchanger (6), a low-temperature integrated air-to-air plate heat exchanger (8), a phase change heat storage device (25), an exhaust bypass inlet duct (28), an exhaust bypass outlet duct, a fresh air bypass inlet duct (17), and a fresh air bypass outlet duct (27). The exhaust duct (4) includes the front section, the middle section and the rear section of the exhaust duct; The air inlet at the front of the exhaust duct is connected to the air outlet of the range hood (1) via an aluminum foil flexible hose (2). The air inlet of the range hood (1) is the exhaust inlet. The air outlet at the front of the exhaust duct is connected to the exhaust inlet of the high-temperature integrated air-to-air plate heat exchanger (6). A first air purification device (3) is installed on the front of the exhaust duct. The air inlet at the middle of the exhaust duct is connected to the exhaust outlet of the high-temperature integrated air-to-air plate heat exchanger (6). The air outlet at the middle of the exhaust duct is connected to the exhaust inlet of the low-temperature integrated air-to-air plate heat exchanger (8). The air inlet at the rear of the exhaust duct is connected to the exhaust outlet of the low-temperature integrated air-to-air plate heat exchanger (8). The air outlet at the rear of the exhaust duct is the exhaust outlet. A waterproof louver (16) is installed at the exhaust outlet. The air inlet of the exhaust bypass inlet pipe (28) is connected to the middle of the front section of the exhaust pipe, the air outlet of the exhaust bypass inlet pipe (28) is connected to the exhaust inlet (254) of the phase change heat storage module of the phase change heat storage device (25), the air inlet of the exhaust bypass outlet pipe is connected to the exhaust outlet (255) of the phase change heat storage module of the phase change heat storage device (25), and the air outlet of the exhaust bypass outlet pipe is connected to the middle of the rear section of the exhaust pipe. The fresh air duct (10) includes the front section, the middle section and the rear section of the fresh air duct; The air inlet at the front of the fresh air duct is the fresh air inlet, and a fresh air rainproof louver (15) is installed at the fresh air inlet. The air outlet at the front of the fresh air duct is connected to the fresh air inlet of the low-temperature integrated air-to-air plate heat exchanger (8). An electronic electrostatic filter (14), an air filter (13), a three-stage fresh air inlet electric double-leaf regulating valve (12), and a second air purification device (11) are installed sequentially on the front of the fresh air duct. The air inlet at the middle section of the fresh air duct is connected to the fresh air outlet of the low-temperature integrated air-to-air plate heat exchanger (8). The air outlet at the middle section of the fresh air duct is connected to the fresh air inlet of the high-temperature integrated air-to-air plate heat exchanger (6). The air inlet at the rear section of the fresh air duct is connected to the fresh air outlet of the high-temperature integrated air-to-air plate heat exchanger (6). The air outlet at the rear section of the fresh air duct is the fresh air outlet. The air inlet of the fresh air bypass inlet pipe (17) is connected to the middle of the front section of the fresh air pipe. The air outlet of the fresh air bypass inlet pipe (17) is connected to the fresh air inlet (252) of the phase change heat storage module of the phase change heat storage device (25). The air inlet of the fresh air bypass outlet pipe (27) is connected to the fresh air outlet (253) of the phase change heat storage module of the phase change heat storage device (25). The air outlet of the fresh air bypass outlet pipe (27) is connected to the middle of the middle section of the fresh air pipe.

2. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system according to claim 1, characterized in that: It also includes a fresh air bypass variable frequency fan (18), a fifth linkage controller (19), a fresh air bypass pipe outlet electric double-leaf regulating valve (20) and a fresh air bypass pipe inlet electric double-leaf regulating valve (26). The fresh air bypass inlet pipe (17) is equipped with a fresh air bypass variable frequency fan (18) and a fresh air bypass pipe outlet electric double-leaf regulating valve (20) in sequence. The fresh air bypass variable frequency fan (18) is connected to the fifth linkage controller (19) through a wire. The fresh air bypass outlet pipe (27) is equipped with a fresh air bypass pipe inlet electric double-leaf regulating valve (26).

3. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system according to claim 1 or 2, characterized in that: It also includes an exhaust bypass variable frequency fan (22), a sixth linkage controller (23), an electric double-leaf regulating valve (21) at the outlet of the second exhaust bypass pipe, an electric double-leaf regulating valve (24) at the inlet of the first exhaust bypass pipe, an electric double-leaf regulating valve (30) at the inlet of the second exhaust bypass pipe, and an electric double-leaf regulating valve (9) at the outlet of the first exhaust bypass pipe. The inlet side of the exhaust bypass inlet pipe (28) is equipped with an electric double-leaf regulating valve (30) at the inlet of the second exhaust bypass pipe. An exhaust bypass variable frequency fan (22) and a second exhaust bypass outlet electric double-leaf regulating valve (21) are installed sequentially on the outlet side of the exhaust bypass inlet pipe (28). The exhaust bypass variable frequency fan (22) is connected to the sixth linkage controller (23) via a wire. A first exhaust bypass inlet electric double-leaf regulating valve (24) is installed on the inlet side of the exhaust bypass outlet pipe, and a first exhaust bypass outlet electric double-leaf regulating valve (9) is installed on the outlet side of the exhaust bypass outlet pipe.

4. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system according to claim 3, characterized in that: It also includes a primary exhaust inlet electrically operated double-leaf regulating valve (5), a primary exhaust outlet electrically operated double-leaf regulating valve (604), a primary fresh air inlet electrically operated double-leaf regulating valve (7), and a primary fresh air outlet electrically operated double-leaf regulating valve (606). The exhaust outlet at the front of the exhaust duct is connected to the exhaust inlet of the high-temperature integrated air-to-air plate heat exchanger (6), the inlet at the middle of the exhaust duct is connected to the exhaust outlet of the high-temperature integrated air-to-air plate heat exchanger (6), the outlet at the middle of the fresh air duct is connected to the fresh air inlet of the high-temperature integrated air-to-air plate heat exchanger (6), and the inlet at the rear of the fresh air duct is connected to the fresh air outlet of the high-temperature integrated air-to-air plate heat exchanger (6) through expansion joints. A primary exhaust inlet electric split-leaf regulating valve (5) is installed at the exhaust inlet end of the exhaust duct near the high-temperature integrated air-to-air plate heat exchanger (6), and a primary exhaust outlet electric split-leaf regulating valve (604) is installed at the exhaust outlet end of the middle section of the exhaust duct near the high-temperature integrated air-to-air plate heat exchanger (6). A primary fresh air inlet electric split-leaf regulating valve (7) is installed at the end of the fresh air inlet near the high-temperature integrated air-to-air plate heat exchanger (6) in the middle section of the fresh air duct, and a primary fresh air outlet electric split-leaf regulating valve (606) is installed at the end of the fresh air outlet near the high-temperature integrated air-to-air plate heat exchanger (6) in the rear section of the fresh air duct.

5. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system according to claim 4, characterized in that: It also includes a secondary fresh air inlet electrically operated double-leaf damper (802), a secondary fresh air outlet electrically operated double-leaf damper (804), and a secondary exhaust outlet electrically operated double-leaf damper (808). A two-stage exhaust outlet electric split-leaf regulating valve (808) is installed at one end of the exhaust outlet of the exhaust duct near the low-temperature integrated air-to-air plate heat exchanger (8). A two-stage fresh air inlet electric split-leaf regulating valve (802) is installed at the end of the fresh air inlet near the low-temperature integrated air-to-air plate heat exchanger (8) at the front section of the fresh air duct, and a two-stage fresh air outlet electric split-leaf regulating valve (804) is installed at the end of the fresh air outlet near the low-temperature integrated air-to-air plate heat exchanger (8) at the middle section of the fresh air duct.

6. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system according to claim 5, characterized in that: The first air purification device (3) includes a first hexagonal screw (301), an air purification device cover plate (302), heat insulation material (303), an oil stain adsorbent (304), a first filter screen (305), an activated carbon adsorption device (306), a second filter screen (307), and a mesh baffle (308). A rectangular opening is provided in the middle of the front section of the exhaust duct. The oil stain adsorbent (304), the first filter screen (305), the activated carbon adsorption device (306), the second filter screen (307), and the mesh baffle (308) are installed in sequence inside the pipe at the rectangular opening of the front section of the exhaust duct. The air purification device cover plate (302) and the heat insulation material (303) are installed in sequence from the outside to the inside at the rectangular opening of the front section of the exhaust duct. The air purification device cover plate (302) is randomly set with the rectangular opening of the front section of the exhaust duct. The air purification device cover plate (302) is sealed and fixedly connected to the front section of the exhaust duct by multiple first hexagonal screws (301).

7. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system according to claim 6, characterized in that: The high-temperature integrated air-to-air plate heat exchanger (6) includes a high-temperature integrated air-to-air plate heat exchanger shell, a first cross heat exchange core (601), a first-stage exhaust high-temperature integrated variable frequency fan (602), a first linkage controller (603), a first-stage fresh air high-temperature integrated variable frequency fan (605), and a second linkage controller (607). The high-temperature integrated air-to-air plate heat exchanger has a rectangular shell structure. On one side of the high-temperature integrated air-to-air plate heat exchanger shell, a fresh air outlet and an exhaust air inlet are machined sequentially from front to back along the width direction. On the other side of the high-temperature integrated air-to-air plate heat exchanger shell, an exhaust air outlet and a fresh air inlet are machined sequentially from front to back along the width direction. The high-temperature integrated gas-to-gas plate heat exchanger has a first cross heat exchange core (601) installed inside the shell. The first cross heat exchange core (601) divides the high-temperature integrated gas-to-gas plate heat exchanger shell into four independent cavities. The four independent cavities correspond one-to-one with the fresh air outlet, exhaust air inlet, exhaust air outlet and fresh air inlet of the high-temperature integrated gas-to-gas plate heat exchanger (6). The independent cavity corresponding to the fresh air outlet is equipped with a primary fresh air high temperature integrated variable frequency fan (605), which is connected to the second linkage controller (607) through a wire. The independent cavity corresponding to the exhaust outlet is equipped with a primary exhaust high-temperature integrated variable frequency fan (602), which is connected to the first linkage controller (603) via a wire.

8. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system according to claim 7, characterized in that: The low-temperature integrated air-to-air plate heat exchanger (8) includes a low-temperature integrated air-to-air plate heat exchanger shell, a second cross-type heat exchange core (801), a third linkage controller (803), a secondary fresh air low-temperature integrated variable frequency fan (805), a fourth linkage controller (806), and a secondary exhaust low-temperature integrated variable frequency fan (807). The shell of the low-temperature integrated air-to-air plate heat exchanger is a rectangular shell structure. On one side of the shell, the exhaust air inlet and the fresh air outlet are processed sequentially from front to back along the width direction. On the other side of the shell, the fresh air inlet and the exhaust air outlet are processed sequentially from front to back along the width direction. The low-temperature integrated gas-to-gas plate heat exchanger has a second cross heat exchange core (801) installed inside the shell. The second cross heat exchange core (801) divides the low-temperature integrated gas-to-gas plate heat exchanger shell into four independent cavities. The four independent cavities correspond one-to-one with the exhaust inlet, fresh air outlet, fresh air inlet and exhaust outlet of the low-temperature integrated gas-to-gas plate heat exchanger (8). The independent cavity corresponding to the fresh air outlet is equipped with a secondary fresh air low temperature integrated variable frequency fan (805), which is connected to the third linkage controller (803) through wires. The independent cavity corresponding to the exhaust outlet is equipped with a secondary exhaust low-temperature integrated variable frequency fan (807), which is connected to the fourth linkage controller (806) through a wire.

9. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system according to claim 8, characterized in that: The phase change thermal energy storage device (25) includes a phase change thermal energy storage device shell, a phase change thermal energy storage module (251), a detachable thermal insulation cover plate (256) for the phase change thermal energy storage module, and a second hexagonal screw (257); The outer shell of the phase change thermal energy storage device is a rectangular shell structure. The left and right ends of the outer shell of the phase change thermal energy storage device are respectively machined with a fresh air inlet (252) and a fresh air outlet (253) of the phase change thermal energy storage module, which are connected to the inner cavity of the outer shell of the phase change thermal energy storage device. The front and rear ends of the outer shell of the phase change thermal energy storage device are respectively machined with an exhaust air inlet (254) and an exhaust air outlet (255) of the phase change thermal energy storage module, which are connected to the inner cavity of the outer shell of the phase change thermal energy storage device. A phase change thermal storage module (251) is installed inside the outer shell of the phase change thermal storage device. A rectangular notch is provided at the top of the outer shell of the phase change thermal storage device. A detachable insulation cover plate (256) of the phase change thermal storage module is fastened to the rectangular notch. The detachable insulation cover plate (256) of the phase change thermal storage module is connected to the outer shell of the phase change thermal storage device by multiple second hexagonal screws (257).

10. The multi-mode ultra-low energy consumption building kitchen make-up air and smoke exhaust coupled with multi-stage heat recovery system according to claim 8 or 9, characterized in that: It also includes an intelligent controller (29), which is connected via multiple wires to the first-stage exhaust inlet electric double-leaf regulating valve (5), the first-stage exhaust outlet electric double-leaf regulating valve (604), the first-stage fresh air outlet electric double-leaf regulating valve (606), the first-stage fresh air inlet electric double-leaf regulating valve (7), the second-stage fresh air inlet electric double-leaf regulating valve (802), the second-stage exhaust outlet electric double-leaf regulating valve (808), the first exhaust bypass pipe outlet electric double-leaf regulating valve (9), and the third-stage fresh air inlet electric double-leaf regulating valve (12). The following components are connected: a fresh air bypass duct outlet electric double-leaf regulating valve (20), a second exhaust bypass duct outlet electric double-leaf regulating valve (21), a first exhaust bypass duct inlet electric double-leaf regulating valve (24), a fresh air bypass duct inlet electric double-leaf regulating valve (26), a second exhaust bypass duct inlet electric double-leaf regulating valve (30), a first linkage controller (603), a second linkage controller (607), a third linkage controller (803), a fourth linkage controller (806), a fifth linkage controller (19), and a sixth linkage controller (23).

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