Window type air conditioner fresh air system with non-uniform flow type heat recovery core body

Abstract

A window type air conditioner fresh air system with a non-uniform flow type heat recovery core belongs to the technical field of fresh air systems and comprises a box body, a control unit, an air feeder, an exhaust fan, a knob switch, an exhaust filter screen, a check valve, a fresh air valve, a fresh air filter screen, a linkage interface, a temperature sensor, an air quality sensor and the special-shaped heat recovery core. The special-shaped heat recovery core body is arranged at the middle lower part of the box body; the special-shaped heat recovery core body is in a peach shape in the main view direction, the two side edges of the special-shaped heat recovery core body are planes, the included angle between the two side edges ranges from 85 degrees to 100 degrees, and the faces opposite to the two side edges are arc faces. The special-shaped heat recovery core body comprises a plurality of heat exchange supporting layers A, a plurality of heat exchange films, a plurality of heat exchange supporting layers B and more than three machine core connecting rods; more than three machine core connecting rods are arranged on the periphery of the special-shaped heat recovery core body in a penetrating manner; the window type air conditioner has the beneficial effects that the window type air conditioner and the fresh air system are uniformly designed and are in mutual deep linkage, the heat recovery core body is of a non-uniform flow channel design, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present invention relates to a fresh air system for a window air conditioner, and particularly to a fresh air system for a window air conditioner with a non-uniform flow type heat recovery core, belonging to the technical field of fresh air systems. Background Art

[0002] With the improvement of living standards, people's requirements for indoor air quality are also getting higher and higher. At present, the air conditioning of residential indoor rooms mostly adopts the form of split air conditioners plus fresh air systems. With the increasingly severe global energy problems, energy conservation, emission reduction, and improvement of energy utilization efficiency have become the focus of common concern among countries.

[0003] As a new type of ventilation technology, the heat recovery fresh air system can effectively recover the energy in the exhaust air and apply it to the fresh air, thereby reducing the energy consumption of the building and improving the quality of the indoor environment. However, at present, the traditional heat recovery core has a square structure and adopts a uniform flow channel design, which easily leads to a single fluid flow velocity distribution and a thickening of the thermal boundary layer, reducing the heat transfer efficiency. Summary of the Invention

[0004] The purpose of the present invention is to address the defects in the existing technology of the above-mentioned heat recovery fresh air system, where the window air conditioner and the fresh air system are independently designed and not interconnected, and the heat recovery core has a uniform flow channel design, reducing the heat transfer efficiency. The present invention provides a fresh air system for a window air conditioner with a special-shaped heat recovery core, which can achieve the purpose of unified design and deep interconnection between the window air conditioner and the fresh air system, and the heat recovery core has a non-uniform flow channel design, improving the heat transfer efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: a fresh air system for a window air conditioner with a non-uniform flow type heat recovery core, including a box body, a control unit, a supply fan, an exhaust fan, a rotary switch, an exhaust air filter, a check valve, a fresh air valve, a fresh air filter, a linkage interface, a temperature sensor, and an air quality sensor;

[0006] It further includes a special-shaped heat recovery core, and the special-shaped heat recovery core is arranged in the middle and lower part of the box body; the special-shaped heat recovery core is in a peach shape in the front view direction, the two side edges are planes, the included angle between the two side edges is 85-100°, and the surfaces opposite to the two side edges are arc surfaces;

[0007] The special-shaped heat recovery core includes several heat exchange support layers A, several heat exchange membranes, several heat exchange support layers B, and more than 3 core connecting rods. The heat exchange support layers A, heat exchange membranes, and heat exchange support layers B are all in a peach shape, with the same size and shape, and are arranged corresponding to each other up and down. The installation order is heat exchange support layer A, heat exchange membrane, heat exchange support layer B, heat exchange membrane, and so on in a cycle. More than 3 core connecting rods are arranged around the special-shaped heat recovery core. The special-shaped heat recovery core can transfer the heat in the exhaust air to the fresh air, thereby realizing the heating of the fresh air. The air supply fan, special-shaped heat recovery core, fresh air filter, and fresh air valve form a fresh air passage, and the exhaust fan, special-shaped heat recovery core, exhaust air filter, and check valve form an exhaust air passage.

[0008] The thickness of the heat exchange support layer A and the heat exchange support layer B is 1.1 - 2.2 mm, and the thicknesses of the heat exchange support layer A and the heat exchange support layer B are different, so that the stacked layer of the heat exchange support layer A and the heat exchange support layer B forms a thickness gradient, which can fully conduct heat exchange.

[0009] The heat exchange support layer A, heat exchange membrane, and heat exchange support layer B are all in a peach shape, with the same size and shape, and are arranged corresponding to each other up and down. The internal flow channels of the heat exchange support layer A and the heat exchange support layer B are in an arc shape, and the cross-sectional shape of the internal flow channels of the heat exchange support layer A and the heat exchange support layer B is a non-uniform flow channel. The heat exchange support layer A includes several internal flow channels, and several internal flow channels are arranged side by side from the lower right side to the upper left side of the heat exchange support layer A. The curvature of its arc gradually becomes smaller from the lower right side to the upper left side, and the width of the internal flow channel gradually becomes smaller from the lower right side to the lower left side. The heat exchange support layer B includes several internal flow channels, and several internal flow channels are arranged side by side from the lower left side to the upper right side of the heat exchange support layer B. The curvature of its arc gradually becomes smaller from the lower left side to the upper right side, and the width of the internal flow channel gradually becomes larger from the lower left side to the upper right side. The heat exchange support layer A and the heat exchange support layer B change the cross-sectional shape of the internal flow channels of the core to guide the flow velocity difference of the fluid in different regions and enhance the turbulence effect.

[0010] Several non-uniform flow channel heat exchange support layers A, several heat exchange membranes, and several non-uniform flow channel heat exchange support layers B form a non-uniform flow channel composite layered heat recovery core structure.

[0011] The heat exchange membrane is a polymer nano-coated heat exchange membrane or a graphene nano-coated heat exchange membrane. At the same time, by combining the polymer nano-coated heat exchange membrane or the graphene nano-coated heat exchange membrane and using a multi-layer stacked heat transfer flow channel, low-contact thermal resistance heat transfer is realized, thereby improving the heat recovery efficiency.

[0012] The modular embedded structure design of the heat recovery fresh air system is adopted, and the gap between the indoor and outdoor units of the window air conditioner and the air outlet panel is utilized to realize the installation of the fresh air system and the air conditioner in a shared space; the control unit, the air supply fan, the exhaust fan, the rotary switch, the exhaust air filter, the check valve, the special-shaped heat recovery core, the fresh air filter, the fresh air valve, and the linkage interface are integrated in the box body and installed in the gap between the indoor and outdoor units of the window air conditioner and the air outlet panel, sharing the air duct with the air conditioner, and no additional holes need to be opened and installations are required;

[0013] The control unit is arranged in the upper middle part of the box body, above the special-shaped heat recovery core; the air supply fan is arranged in the upper right part of the box body; the exhaust fan is arranged in the upper left part of the box body; the rotary switch is arranged in the upper right side of the box body; the exhaust air filter is arranged in the lower right side of the box body; the check valve is arranged inside the exhaust air filter; the fresh air valve is arranged in the lower left side of the box body; the fresh air filter is arranged inside the fresh air valve; the linkage interface is arranged on the left side of the box body, below the rotary switch;

[0014] The temperature sensor and the air quality sensor are arranged on both sides of the air supply fan, and the temperature sensor and the air quality sensor are respectively electrically connected to the control unit, and the system is intelligently controlled according to the data changes of the indoor and outdoor temperatures and air quality;

[0015] The heat recovery fresh air system shares the air duct with the air conditioner. At the same time, the intelligent control unit of the fresh air system shares the power supply with the air conditioner to realize deep linkage with the air conditioning system, and can be independently controlled to operate through the control unit to realize fresh air oxygen increase and energy recovery in the room; the control unit shares the power supply with the air conditioner, and the communication protocol of the control unit adopts TTL serial communication to dock with the air conditioner control communication to realize deep linkage control; and through the communication protocol, a communication line is led out from the linkage interface to dock with the air conditioner control communication to realize deep linkage control.

[0016] The air supply fan and the exhaust fan are eddy current fans, driven by 24V DC to realize the transportation and adjustment of indoor and outdoor air; the rotary switch is a multi-position switch with 5 positions of on, off, high, medium, and low, and can independently control the fresh air system; the box body size is 300*350*80, and the material is ABS material, and the fire protection requirement is 5VA level; the heat exchange support layer A, the heat exchange support layer B, and the movement connecting rod are made of ABS material, and the fire protection grade is 5VA; the exhaust air filter filtration grade is MERV 8; the fresh air filter filtration grade is MERV 13.

[0017] In the special-shaped heat recovery core, the heat exchange support layer A is the fresh air flow channel, and the heat exchange support layer B is the exhaust air flow channel; the heat exchange support layer A and the heat exchange support layer B are stacked alternately, and the heat exchange film is located between the heat exchange support layer A and the heat exchange support layer B as the heat exchange layer to isolate the two airflows and prevent the airflows from crossing and mixing; by guiding the flow velocity differences of the fresh and exhaust airflows in different regions inside the core, the turbulence effect is enhanced. At the same time, combined with the graphene nano-coated heat exchange film and using the multi-layer stacked heat transfer flow channels, the fresh air flow channel and the exhaust air flow channel are arranged alternately to achieve low-contact thermal resistance heat transfer, thereby improving the heat recovery efficiency.

[0018] The heat exchange support layer A is sequentially provided with 11 non-uniform flow channels from the lower right arc surface to the upper left plane, namely non-uniform flow channel A, non-uniform flow channel B, non-uniform flow channel C, non-uniform flow channel D, non-uniform flow channel E, non-uniform flow channel F, non-uniform flow channel G, non-uniform flow channel H, non-uniform flow channel I, non-uniform flow channel J, and non-uniform flow channel K. The curvature of the arc surface gradually decreases from non-uniform flow channel A to non-uniform flow channel K, and the flow channel width spacing gradually decreases from non-uniform flow channel A to K.

[0019] The heat exchange support layer B is sequentially provided with 11 non-uniform flow channels from the lower left arc surface to the upper right plane, namely non-uniform flow channel a, non-uniform flow channel b, non-uniform flow channel c, non-uniform flow channel d, non-uniform flow channel e, non-uniform flow channel f, non-uniform flow channel g, non-uniform flow channel h, non-uniform flow channel i, non-uniform flow channel j, and non-uniform flow channel k. The curvature of the arc surface gradually decreases from non-uniform flow channel a to non-uniform flow channel k, and the flow channel width spacing gradually decreases from non-uniform flow channel a to non-uniform flow channel k. The heat exchange support layer A and the heat exchange support layer B change the cross-sectional shape of the flow channels inside the core to guide the flow velocity differences of the fluid in different regions and enhance the turbulence effect.

[0020] The non-uniform flow channels on the heat exchange support layer A and the non-uniform flow channels on the heat exchange support layer B are in a cross-corresponding relationship up and down, with the same structure and flow channel width.

[0021] The thicknesses of the heat exchange support layer A and the heat exchange support layer B are 1.3 mm and 2.0 mm respectively.

[0022] The thicknesses of the heat exchange support layer A and the heat exchange support layer B are 1.3 mm and 1.8 mm respectively.

[0023] The thicknesses of the heat exchange support layer A and the heat exchange support layer B are 1.3 mm and 1.5 mm respectively. Of course, according to actual needs, the thicknesses of the heat exchange support layer A and the heat exchange support layer B can also be designed into other ratio sizes within the range of 1.1 - 2.2 mm.

[0024] The heat exchange membrane is a polymer nano-coated heat exchange membrane. The polymer nano-coated heat exchange membrane uses polymer materials such as polyimide and polyurethane as the matrix, and is a coated film prepared by nano-technology such as adding nano-particles or forming nano-structures, which enhances the heat transfer efficiency, is lightweight, flexible and has a low cost.

[0025] The heat exchange membrane is a graphene nano-coated heat exchange membrane; the graphene nano-coated heat exchange membrane is a "high-performance version" of the polymer nano-coated heat exchange membrane. Both are used for heat transfer, but the graphene has better performance and stronger heat transfer efficiency.

[0026] Working process: The check valve and the fresh air valve are in the closed state when the unit is shut down to prevent the cold outdoor air from flowing back into the room and affecting the indoor air-conditioning effect; when the system is running, the fresh air flow passes through the fresh air valve, is filtered through the fresh air filter screen, and passes through the special-shaped heat recovery core for energy recovery, and then is pressurized by the supply fan and sent into the room to achieve air purification and fresh air oxygenation in the room; the exhaust air flow passes through the exhaust filter screen and the check valve, passes through the special-shaped heat recovery core for energy recovery, and is discharged outdoors by the exhaust fan.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] (1) The present invention provides a fresh air system for a window air conditioner with a non-uniform flow type heat recovery core. By changing the shape of the heat recovery core, that is, the cross-section of the internal flow channel of the heat recovery core is an arc shape with different thicknesses, the flow velocity difference of the fluid in different regions is guided to enhance the turbulence effect. At the same time, combined with the polymer nano-coated heat exchange membrane or the graphene nano-coated heat exchange membrane, the multi-layer stacked heat transfer flow channel is used to achieve low-contact thermal resistance heat transfer, thereby improving the heat recovery efficiency of the heat recovery core. In addition, the present invention also has the advantages of simple structure, easy implementation and low cost.

[0029] (2) At the same time, in this system, through the modular embedded structure design of the heat recovery fresh air system, using the gaps between the indoor and outdoor units and the air outlet panel of the window air conditioner, the fresh air system and the air conditioner share the installation space, and the heat recovery fresh air system and the air conditioner share the air duct. At the same time, the intelligent control unit of the fresh air system and the air conditioner share the power supply, realizing deep linkage with the air conditioning system and can be independently controlled to operate. It realizes fresh air oxygenation and energy recovery in the room, reduces building energy consumption and improves indoor air quality, and solves the problems of increased equipment cost and space occupation of an independent fresh air system. Description of the Drawings

[0030] Figure 1 is: the three-dimensional structure schematic diagram of the present invention;

[0031] Figure 2 is: the front view of the present invention;

[0032] Figure 3 is: the left view of the present invention;

[0033] Figure 4 is: Front view of the special-shaped heat recovery core

[0034] Figure 5 is: Perspective view of the special-shaped heat recovery core

[0035] Figure 6 is: Figure 5 Enlarged view of part A of

[0036] Figure 7 is: Front view of heat exchange support layer A

[0037] Figure 8 is: Front view of heat exchange support layer B

[0038] Figure 9 is: Front view of the heat exchange membrane

[0039] In the attached drawings: box body 1, control unit 2, air supply fan 3, exhaust fan 4, rotary switch 5, exhaust air filter screen 6, check valve 7, fresh air valve 8, fresh air filter screen 9, linkage interface 10, temperature sensor 11, air quality sensor 12, special-shaped heat recovery core 13, heat exchange support layer A 1301, heat exchange membrane 1302, heat exchange support layer B 1303, core connecting rod 1304, plane 1305, arc surface 1306, non-uniform flow channel A 14, non-uniform flow channel B 15, non-uniform flow channel C 16, non-uniform flow channel D 17, non-uniform flow channel E 18, non-uniform flow channel F 19, non-uniform flow channel G 20, non-uniform flow channel H 21, non-uniform flow channel I 22, non-uniform flow channel J 23, non-uniform flow channel K 24, non-uniform flow channel a 25, non-uniform flow channel b 26, non-uniform flow channel c 27, non-uniform flow channel d 28, non-uniform flow channel e 29, non-uniform flow channel f 30, non-uniform flow channel g 31, non-uniform flow channel h 32, non-uniform flow channel i 33, non-uniform flow channel j 34, non-uniform flow channel k 35. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The left, right, up, down, front, and rear directions are for the convenience of narration and can actually be changed. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] As Figures 1 to 9As shown, a fresh air system for a window air conditioner with a non-uniform flow heat recovery core is as follows Figure 1 , Figure 2 and Figure 3 shown, including a box body 1, a control unit 2, a supply fan 3, an exhaust fan 4, a rotary switch 5, an exhaust air filter screen 6, a check valve 7, a fresh air valve 8, a fresh air filter screen 9, a linkage interface 10, a temperature sensor 11 and an air quality sensor 12;

[0043] As Figure 4 and Figure 5 shown, it further includes a special-shaped heat recovery core 13, and the special-shaped heat recovery core 13 is arranged in the middle and lower part of the box body 1; the special-shaped heat recovery core 13 is in a peach shape in the front view direction, the two side edges are planes 1305, the included angle α between the two side edges is 90°, and the surfaces opposite to the two side edges are arc surfaces 1306;

[0044] As Figure 6 shown, the special-shaped heat recovery core 13 includes a plurality of heat exchange support layers A 1301, a plurality of heat exchange membranes 1302, a plurality of heat exchange support layers B 1303 and 6 core connecting rods 1304. The heat exchange support layers A 1301, heat exchange membranes 1302 and heat exchange support layers B 1303 are all in a peach shape, with the same size and shape, and are arranged corresponding to each other up and down; the installation order is heat exchange support layer A 1301, heat exchange membrane 1302, heat exchange support layer B 1303, heat exchange membrane 1302, and so on in a cycle; 6 core connecting rods 1304 are arranged around the special-shaped heat recovery core 13; the special-shaped heat recovery core 13 can transfer the heat in the exhaust air to the fresh air, so as to realize heating of the fresh air; the supply fan 3, the special-shaped heat recovery core 13, the fresh air filter screen 9 and the fresh air valve 8 form a fresh air channel, and the exhaust fan 4, the special-shaped heat recovery core 13, the exhaust air filter screen 6 and the check valve 7 form an exhaust air channel;

[0045] As Figure 6 shown, the thickness of the heat exchange support layer A 1301 and the heat exchange support layer B 1303 is 1.1 - 2.2 mm, and the thicknesses of the heat exchange support layer A 1301 and the heat exchange support layer B 1303 are different, so that the stacked layer of the heat exchange support layer A 1301 and the heat exchange support layer B 1303 forms a thickness gradient, which can fully realize heat exchange;

[0046] As Figure 7 , Figure 8 and Figure 9As shown, the heat exchange support layer A 1301, the heat exchange membrane 1302, and the heat exchange support layer B 1303 are all in a peach shape, with the same size and shape, and are correspondingly arranged up and down; the internal flow channels of the heat exchange support layer A 1301 and the heat exchange support layer B 1303 are arc-shaped, and the cross-sectional shape of the internal flow channels of the heat exchange support layer A 1301 and the heat exchange support layer B 1303 is a non-uniform flow channel; the heat exchange support layer A 1301 includes a number of internal flow channels, and the number of internal flow channels is arranged side by side from the lower right side to the upper left side of the heat exchange support layer A 1301, and the curvature of its arc gradually becomes smaller from the lower right side to the upper left side, and the width of the internal flow channel gradually becomes smaller from the lower right side to the lower left side; the heat exchange support layer B 1303 includes a number of internal flow channels, and the number of internal flow channels is arranged side by side from the lower left side to the upper right side of the heat exchange support layer B 1303, and the curvature of its arc gradually becomes smaller from the lower left side to the upper right side, and the width of the internal flow channel gradually becomes smaller from the lower left side to the upper right side; the heat exchange support layer A 1301 and the heat exchange support layer B 1303 change the cross-sectional shape of the internal flow channels in the core body to guide the flow velocity difference of the fluid in different regions and enhance the turbulence effect;

[0047] As Figure 3 shown, a number of non-uniform flow channel heat exchange support layers A 1301, a number of heat exchange membranes 1302, and a number of non-uniform flow channel heat exchange support layers B 1303 form a non-uniform flow channel composite layered heat recovery core structure;

[0048] As Figure 1 shown, a modular embedded structure design of a heat recovery fresh air system is adopted, and the gap between the indoor and outdoor units of the window air conditioner and the air outlet panel is utilized to realize the shared space installation of the fresh air system and the air conditioner; the control unit 2, the air supply fan 3, the exhaust fan 4, the rotary switch 5, the exhaust air filter screen 6, the check valve 7, the special-shaped heat recovery core 13, the fresh air filter screen 9, the fresh air valve 8, and the linkage interface 10 are integrated in the box body 1 and installed in the gap between the indoor and outdoor units of the window air conditioner and the air outlet panel, sharing the air duct with the air conditioner, and no additional holes need to be opened and installed;

[0049] The control unit 2 is arranged in the upper middle part of the box body 1, above the special-shaped heat recovery core 13, the air supply fan 3 is arranged in the upper right part of the box body 1, the exhaust fan 4 is arranged in the upper left part of the box body 1, the exhaust fan 4 is arranged in the upper left part of the box body 1, the rotary switch 5 is arranged in the upper right part of the box body 1, the exhaust air filter screen 6 is arranged in the lower right part of the box body 1, the check valve 7 is arranged inside the exhaust air filter screen 6, the fresh air valve 8 is arranged in the lower left part of the box body 1, the fresh air filter screen 9 is arranged inside the fresh air valve 8, and the linkage interface 10 is arranged on the left side of the box body 1, below the rotary switch 5;

[0050] The temperature sensor 11 and the air quality sensor 12 are arranged on both sides of the air supply fan 3. The temperature sensor 11 and the air quality sensor 12 are respectively electrically connected to the control unit 2, and the system is intelligently controlled according to the data changes of indoor and outdoor temperatures and air quality.

[0051] The heat recovery fresh air system shares the air duct with the air conditioner. At the same time, the intelligent control unit 2 of the fresh air system shares the power supply with the air conditioner to achieve deep linkage with the air conditioning system, and can be independently controlled by the control unit 2 to operate, realizing fresh air oxygen increase and energy recovery in the room. The control unit 2 shares the power supply with the air conditioner. The communication protocol of the control unit 2 uses TTL serial communication to communicate and dock with the air conditioner control to achieve deep linkage control. And through the communication protocol, a communication line is led out from the linkage interface 10 to communicate and dock with the air conditioner control to achieve deep linkage control.

[0052] As Figure 1 shown, the air supply fan 3 and the exhaust fan 4 are eddy current fans, driven by 24V DC, to realize the transportation and regulation of indoor and outdoor air. The rotary switch 5 is a multi-position switch with on, off, high, medium, and low 5 positions, and can independently control the fresh air system. The size of the box 1 is 300*350*80, and the material is ABS material, and the fire protection requirement is 5VA level. The heat exchange support layer A 1301, the heat exchange support layer B 1303, and the core connecting rod 1304 are made of ABS material, and the fire protection grade is 5VA. The filtration grade of the exhaust air filter screen 6 is MERV 8. The filtration grade of the fresh air filter screen 9 is MERV 13.

[0053] As Figure 1 and Figure 6 shown, in the special-shaped heat recovery core 13, the heat exchange support layer A 1301 is the fresh air flow channel, and the heat exchange support layer B 1303 is the exhaust air flow channel. The heat exchange support layer A 1301 and the heat exchange support layer B 1303 are alternately stacked. The heat exchange membrane 1302 is used as the heat exchange layer and is located between the heat exchange support layer A 1301 and the heat exchange support layer B 1303 as the isolation of the two airflows to prevent the airflows from crossing and mixing. Guide the difference in the flow velocities of the fresh and exhaust airflows in different regions inside the core to enhance the turbulence effect. At the same time, combined with the graphene nano-coated heat exchange membrane 1302, using the multi-layer stacked heat transfer flow channels, the fresh air flow channel and the exhaust air flow channel are alternately arranged to achieve low-contact thermal resistance heat transfer, thereby improving the heat recovery efficiency.

[0054] As Figure 5 and Figure 6As shown, the heat exchange support layer A 1301 is sequentially provided with 11 non-uniform flow channels from the lower right arc surface to the upper left plane, namely non-uniform flow channel A14, non-uniform flow channel B15, non-uniform flow channel C16, non-uniform flow channel D17, non-uniform flow channel E18, non-uniform flow channel F19, non-uniform flow channel G 20, non-uniform flow channel H 21, non-uniform flow channel I 22, non-uniform flow channel J 23, and non-uniform flow channel K 24. The curvature of the arc surface gradually decreases from non-uniform flow channel A to non-uniform flow channel K, and the width spacing of the non-uniform flow channels gradually decreases from non-uniform flow channel A to non-uniform flow channel K;

[0055] The heat exchange support layer B 1303 is sequentially provided with 11 non-uniform flow channels from the lower left arc surface to the upper right plane, namely non-uniform flow channel a 25, non-uniform flow channel b 26, non-uniform flow channel c 27, non-uniform flow channel d 28, non-uniform flow channel e29, non-uniform flow channel f 30, non-uniform flow channel g 31, non-uniform flow channel h 32, non-uniform flow channel i 33, non-uniform flow channel j34, and non-uniform flow channel k 35. The curvature of the arc surface gradually decreases from non-uniform flow channel a to non-uniform flow channel k, and the width spacing of the flow channels gradually decreases from non-uniform flow channel a to non-uniform flow channel k; The heat exchange support layer A 1301 and the heat exchange support layer B 1303 guide the velocity difference of the fluid in different regions by changing the cross-sectional shape of the flow channels inside the core, enhancing the turbulence effect;

[0056] The non-uniform flow channels on the heat exchange support layer A 1301 and the non-uniform flow channels on the heat exchange support layer B 1303 are in a vertical cross-correspondence, with the same structure and flow channel width.

[0057] As Figure 1 and Figure 6 shown, the thicknesses of the heat exchange support layer A 1301 and the heat exchange support layer B 1303 are 1.3 and 2.0 mm respectively.

[0058] Of course, according to actual needs, the thicknesses of the heat exchange support layer A 1301 and the heat exchange support layer B 1303 can also be designed into other ratio dimensions between 1.1 - 2.2 mm.

[0059] As Figure 9 shown, the heat exchange film 1302 is a polymer nano-coated heat exchange film 1302. The polymer nano-coated heat exchange film 1302 is a coated film prepared with polymer materials such as polyimide and polyurethane as the matrix through nanotechnology such as adding nanoparticles or forming nanostructures, enhancing the heat transfer efficiency, being lightweight, flexible, and having a low cost.

[0060] Working process: The check valve 7 and the fresh air valve 8 are in the closed state when the unit is shut down, preventing the cold air from outdoors from flowing back into the room and affecting the air-conditioning effect indoors. When the system is running, the fresh air flow passes through the fresh air valve 8, is filtered by the fresh air filter 9, and after energy recovery through the special-shaped heat recovery core 13, it is pressurized by the supply fan 3 and sent into the room to achieve air purification and fresh air oxygenation in the room. The exhaust air flow is filtered by the exhaust air filter 6 and the check valve 7, and after energy recovery through the special-shaped heat recovery core 13, it is discharged outdoors by the exhaust fan 4.

[0061] Embodiment 2:

[0062] As Figure 1 and Figure 6 shown, the thicknesses of the heat exchange support layer A 1301 and the heat exchange support layer B 1303 are 1.3 mm and 1.8 mm respectively.

[0063] The rest is the same as Embodiment 1.

[0064] Embodiment 3:

[0065] As Figure 1 and Figure 6 shown, the thicknesses of the heat exchange support layer A 1301 and the heat exchange support layer B 1303 are 1.3 mm and 1.5 mm respectively.

[0066] The rest is the same as Embodiment 1.

[0067] Embodiment 4:

[0068] The heat exchange film 1302 is a graphene nano-coated heat exchange film 1302; the graphene nano-coated heat exchange film 1302 is the "high-performance version" of the polymer nano-coating, with better graphene performance and stronger heat transfer efficiency.

[0069] The rest is the same as Embodiment 1.

[0070] The above embodiments are only the more preferred embodiments of the present invention, and the common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A fresh air system for a window air conditioner with a non-uniform flow type heat recovery core body, comprising a box body, a control unit, a supply fan, an exhaust fan, a rotary switch, an exhaust air filter, a check valve, a fresh air valve, a fresh air filter, a linkage interface, a temperature sensor and an air quality sensor, characterized in that: It further comprises a special-shaped heat recovery core body, and the special-shaped heat recovery core body is arranged in the middle and lower part of the box body; the special-shaped heat recovery core body is in a peach shape in the front view direction, with both sides being flat surfaces, the included angle between the two sides being 85-100°, and the surfaces opposite to the two sides being arc surfaces; The special-shaped heat recovery core body comprises a plurality of heat exchange support layers A, a plurality of heat exchange membranes and a plurality of heat exchange support layers B and more than 3 core connecting rods. The heat exchange support layers A, the heat exchange membranes and the heat exchange support layers B are all in a peach shape structure, with the same size and shape, and are arranged corresponding to each other up and down respectively. The installation sequence is heat exchange support layer A, heat exchange membrane, heat exchange support layer B, heat exchange membrane, and so on in a cycle; more than 3 core connecting rods are arranged around the special-shaped heat recovery core body; The thickness of the heat exchange support layer A and the heat exchange support layer B is 1.1-2.2 mm, and the thicknesses of the heat exchange support layer A and the heat exchange support layer B are different, so that the stacked layer of the heat exchange support layer A and the heat exchange support layer B forms a thickness gradient; The heat exchange support layer A, the heat exchange membrane and the heat exchange support layer B are all in a peach shape structure, with the same size and shape, and are arranged corresponding to each other up and down respectively; the internal flow channels of the heat exchange support layer A and the heat exchange support layer B are arc-shaped, and the cross-sectional shape of the internal flow channels of the heat exchange support layer A and the heat exchange support layer B is a non-uniform flow channel; the heat exchange support layer A comprises a plurality of internal flow channels, and the plurality of internal flow channels are arranged side by side from the lower right side to the upper left side of the heat exchange support layer A, and the curvature of the arc gradually becomes smaller from the lower right side to the upper left side, and the width of the internal flow channel gradually becomes smaller from the lower right side to the lower left side; the heat exchange support layer B comprises a plurality of internal flow channels, and the plurality of internal flow channels are arranged side by side from the lower left side to the upper right side of the heat exchange support layer B, and the curvature of the arc gradually becomes smaller from the lower left side to the upper right side, and the width of the internal flow channel gradually becomes smaller from the lower left side to the upper right side; the heat exchange support layer A and the heat exchange support layer B guide the flow velocity difference of the fluid in different regions by changing the cross-sectional shape of the internal flow channels of the core body, and enhance the turbulence effect; A plurality of non-uniform flow channel heat exchange support layers A, a plurality of heat exchange membranes and a plurality of non-uniform flow channel heat exchange support layers B form a non-uniform flow channel composite layered heat recovery core body structure; The heat exchange membrane is a polymer nano-coated heat exchange membrane or a graphene nano-coated heat exchange membrane; at the same time, by combining the polymer nano-coated heat exchange membrane or the graphene nano-coated heat exchange membrane and using a multi-layer stacked heat transfer flow channel, low contact thermal resistance heat transfer is realized, thereby improving the heat recovery efficiency.

2. The fresh air system of a window air conditioner with a non-uniform flow type heat recovery core according to claim 1, wherein: Adopted the modular embedded structure design of the heat recovery fresh air system, and utilized the gaps between the indoor and outdoor units of the window air conditioner and the air outlet panel to realize the installation of the fresh air system and the air conditioner in a shared space; the control unit, the supply fan, the exhaust fan, the rotary switch, the exhaust air filter, the check valve, the special-shaped heat recovery core, the fresh air filter, the fresh air valve, and the linkage interface are integrated in the box body and installed in the gap between the indoor and outdoor units of the window air conditioner and the air outlet panel, sharing the air duct with the air conditioner without the need for additional drilling and installation; The control unit is arranged in the upper middle part of the box body, above the special-shaped heat recovery core; the supply fan is arranged in the upper right part of the box body; the exhaust fan is arranged in the upper left part of the box body; the exhaust fan is arranged in the upper left part of the box body; the rotary switch is arranged in the upper right part of the right side of the box body; the exhaust air filter is arranged in the lower right part of the box body; the check valve is arranged inside the exhaust air filter; the fresh air valve is arranged in the lower left part of the box body; the fresh air filter is arranged inside the fresh air valve; the linkage interface is arranged on the left side of the box body, below the rotary switch; The temperature sensor and the air quality sensor are arranged on both sides of the supply fan, and the temperature sensor and the air quality sensor are respectively electrically connected to the control unit, and the system is intelligently controlled according to the data changes of the indoor and outdoor temperatures and air quality; The heat recovery fresh air system shares the air duct with the air conditioner. At the same time, the intelligent control unit of the fresh air system shares the power supply with the air conditioner to realize deep linkage with the air conditioning system, and can be independently controlled to operate through the control unit to realize fresh air oxygen increase and energy recovery in the room; the control unit shares the power supply with the air conditioner, and the communication protocol of the control unit adopts TTL serial communication to communicate and dock with the air conditioner control to realize deep linkage control; and through the communication protocol, a communication line is led out from the linkage interface to communicate and dock with the air conditioner control to realize deep linkage control.

3. The fresh air system of the window air conditioner with a non-uniform flow type heat recovery core according to claim 1, characterized in that: The supply fan and the exhaust fan are vortex fans; the rotary switch is a multi-position switch with on, off, high, medium, and low 5 positions; the box body material is ABS material; the heat exchange support layer A, the heat exchange support layer B, and the core connecting rod are made of ABS material; the filtration grade of the exhaust air filter is MERV 8; the filtration grade of the fresh air filter is MERV 13.

4. The fresh air system of the window air conditioner with a non-uniform flow type heat recovery core according to claim 1, characterized in that: In the special-shaped heat recovery core, the heat exchange support layer A is the fresh air flow channel, and the heat exchange support layer B is the exhaust air flow channel; the heat exchange support layer A and the heat exchange support layer B are stacked alternately, and the heat exchange membrane is used as the heat exchange layer and is located between the heat exchange support layer A and the heat exchange support layer B as the isolation of the two airflows to prevent the airflows from crossing and mixing.

5. The fresh air system of a window air conditioner with a non-uniform flow type heat recovery core according to any one of claims 1 or 4, characterized in that: The heat exchange support layer A is sequentially provided with 11 non-uniform flow channels from the lower right arc surface to the upper left plane, which are non-uniform flow channel A, non-uniform flow channel B, non-uniform flow channel C, non-uniform flow channel D, non-uniform flow channel E, non-uniform flow channel F, non-uniform flow channel G, non-uniform flow channel H, non-uniform flow channel I, non-uniform flow channel J, and non-uniform flow channel K. The curvature of the arc surface gradually decreases from non-uniform flow channel A to non-uniform flow channel K, and the width spacing of the flow channels gradually decreases from non-uniform flow channel A to non-uniform flow channel K; The heat exchange support layer B is successively provided with 11 non-uniform flow channels from the lower left arc surface to the upper right plane, namely non-uniform flow channel a, non-uniform flow channel b, non-uniform flow channel c, non-uniform flow channel d, non-uniform flow channel e, non-uniform flow channel f, non-uniform flow channel g, non-uniform flow channel h, non-uniform flow channel i, non-uniform flow channel j, and non-uniform flow channel k. The curvature of the arc surface gradually decreases from non-uniform flow channel a to non-uniform flow channel k, and the flow channel width spacing gradually decreases from non-uniform flow channel a to non-uniform flow channel k; The non-uniform flow channels on the heat exchange support layer A and the non-uniform flow channels on the heat exchange support layer B are vertically and horizontally cross-corresponding.

6. The fresh air system of a window air conditioner with a non-uniform flow type heat recovery core according to claim 1, characterized in that: The thicknesses of the heat exchange support layer A and the heat exchange support layer B are 1.3 mm and 2.0 mm respectively.

7. The fresh air system of a window air conditioner with a non-uniform flow type heat recovery core according to claim 1, wherein: The thicknesses of the heat exchange support layer A and the heat exchange support layer B are 1.3 mm and 1.8 mm respectively.

8. The fresh air system of a window air conditioner with a non-uniform flow type heat recovery core according to claim 1, wherein: The thicknesses of the heat exchange support layer A and the heat exchange support layer B are 1.3 mm and 1.5 mm respectively.

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