A fresh air device and a fresh air air conditioner having the same.

Abstract

This invention provides a fresh air device and a fresh air air conditioner having the same. The fresh air device includes a base, which includes a base body. The base body forms three heat exchange chambers, any two of which are arranged adjacent to each other. The three heat exchange chambers include a first heat exchange chamber, a second heat exchange chamber, and a third heat exchange chamber. Outdoor fresh air can enter the first heat exchange chamber, indoor stale air can enter the second heat exchange chamber, and water can flow through the third heat exchange chamber. Part of the energy of the indoor stale air can be transferred to the outdoor fresh air, and another part of the energy can be transferred to the outdoor fresh air via water. The large heat exchange area and long heat exchange time between the outdoor fresh air, water, and indoor stale air result in a uniform temperature distribution of the fresh air after heat exchange and a significant heat exchange effect. This ensures that the temperature of the outdoor fresh air introduced into the room is close to the indoor air temperature, solving the problems of uneven temperature distribution of the fresh air after heat exchange, insignificant heat exchange effect, and energy waste of indoor stale air.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning equipment technology, and particularly relates to a fresh air device and a fresh air air conditioner having the same. Background Technology

[0002] With the continuous development of the air conditioning industry, an air conditioner with ventilation and fresh air blowing function has been launched on the market. The fresh air device of the air conditioner can bring fresh outdoor air into the room, and the exhaust device of the air conditioner can filter the indoor stale air and discharge it to the outside, thus completing the replacement of fresh air with fresh air blowing. After the outdoor fresh air and the indoor stale air exchange heat through the heat exchanger, the temperature of the fresh air entering the room can be closer to the indoor temperature. In the existing technology, the heat exchanger structure design is unreasonable. During the heat exchange process, the heat exchange area between the fresh air and the stale air is small and the heat exchange time is short, resulting in uneven temperature distribution of the fresh air after heat exchange, insignificant heat exchange effect, and energy waste of indoor stale air. Summary of the Invention

[0003] In view of this, the present invention provides a fresh air device and a fresh air air conditioner having the same, to solve the problems in the prior art such as small heat exchange area and short heat exchange time between fresh air and stale air, resulting in uneven temperature distribution of fresh air after heat exchange and insignificant heat exchange effect.

[0004] The present invention provides a fresh air device, including a base, the base including a base body, the base body forming three heat exchange chambers, any two of the three heat exchange chambers are arranged adjacent to each other, and the fluid in any one of the heat exchange chambers can exchange heat with the fluids in the other two heat exchange chambers. In any of the three heat exchange chambers, outdoor fresh air can flow through one of the heat exchange chambers and exchange heat with the fluid flowing through the other or two heat exchange chambers.

[0005] Further optionally, the three heat exchange chambers include a first heat exchange chamber, a second heat exchange chamber, and a third heat exchange chamber. The first heat exchange chamber is connected to the outside, and fresh outdoor air can enter the first heat exchange chamber. The second heat exchange chamber is connected to the inside, and stale indoor air can enter the second heat exchange chamber. Water can flow through the third heat exchange chamber.

[0006] Further optionally, the first heat exchange chamber and the second heat exchange chamber are arranged side by side along the height direction of the base body, and the first heat exchange chamber is located at the bottom of the second heat exchange chamber; the third heat exchange chamber is arranged on the same side of the first heat exchange chamber and the second heat exchange chamber and is located on the air outlet side of the first heat exchange chamber.

[0007] Optionally, the base body forms a base cavity; the fresh air device further includes a first partition and a second partition, the first partition and the second partition being disposed within the base cavity and dividing the base cavity into a first heat exchange cavity, a second heat exchange cavity, and a third heat exchange cavity; one wall of the first partition is located within the first heat exchange cavity, and the other wall of the first partition is located within the second heat exchange cavity; one wall of the second partition is located within the third heat exchange cavity, a portion of the other wall of the second partition is located within the first heat exchange cavity, and another portion of the other wall of the second partition is located within the second heat exchange cavity; The second partition is inclined, and a flow channel is formed on the wall of the third heat exchange chamber, through which water can flow.

[0008] Further optionally, the flow channel extends from the top of the base body to the bottom of the base body, and the flow channel has a serpentine structure; The flow channel includes a first flow channel section corresponding to the first heat exchange chamber and a second flow channel section corresponding to the second heat exchange chamber; when the water flows through the second flow channel section, it completes heat exchange with the turbid air in the second heat exchange chamber, and then flows through the first flow channel section and completes heat exchange with the fresh air in the first heat exchange chamber.

[0009] Further optionally, the base body includes a base sidewall; the fresh air device further includes a first water inlet pipe, a second water inlet pipe, and a drain pipe, wherein the first water inlet pipe is disposed on the base sidewall and communicates with the water inlet end of the first flow channel section; the second water inlet pipe is disposed on the base sidewall and near the top of the base body, and communicates with the water inlet end of the second flow channel section; the drain pipe is disposed on the base sidewall and near the bottom of the base body, and communicates with the third heat exchange chamber and is away from the second partition. When all three heat exchange chambers need to complete heat exchange, the second inlet pipe and the drain pipe are opened, and the first inlet pipe is closed. Water then enters the second flow channel section through the second inlet pipe and is discharged through the first flow channel section and the drain pipe. When only the first heat exchange chamber and the third heat exchange chamber need to complete the heat exchange, the first water inlet pipe and the drain pipe are opened, and the second water inlet pipe is closed. Then, water enters the first flow channel section through the first water inlet pipe and is discharged through the drain pipe.

[0010] Optionally, the base body includes a base top wall and a base side wall. The base top wall forms a first turbid air inlet, which communicates with a second heat exchange chamber. The base side wall forms a second turbid air inlet, which communicates with a third heat exchange chamber and is located near the bottom of the base body. A turbid air communication port is also formed near the first partition of the second partition, which communicates with the second heat exchange chamber and the third heat exchange chamber. A baffle is slidably provided at the turbid air communication port, allowing the baffle to slide and thus open or close the turbid air communication port. When only the first heat exchange chamber and the second heat exchange chamber are needed to complete the heat exchange, the first turbid air inlet is opened, and the second turbid air inlet and the turbid air connection port are closed. Then the turbid air enters the second heat exchange chamber through the first turbid air inlet and completes the heat exchange with the fresh air flowing through the first heat exchange chamber. When all three heat exchange chambers need to complete heat exchange, the first turbid air inlet is closed, and the second turbid air inlet and the turbid air connection port are both opened. The turbid air then enters the third heat exchange chamber through the second turbid air inlet, first completing heat exchange with the fresh air flowing through the first heat exchange chamber, and then entering the second heat exchange chamber through the turbid air vent, completing heat exchange again with the fresh air flowing through the first heat exchange chamber.

[0011] Further optionally, the flow channels include a plurality of channels, each of which extends along the width direction of the base body, and the plurality of channels are spaced apart along the height direction of the base body; the flow channels allow water to be partially stored when it flows along the second baffle.

[0012] Further optionally, the second partition includes a first wall surface and a second wall surface, the first wall surface being located inside the third heat exchange cavity and the second wall surface being located away from the third heat exchange cavity; the flow channel is a groove structure formed by the first wall surface being recessed into the second wall surface.

[0013] The present invention also provides a fresh air conditioner, including an indoor unit body and a fresh air device as described in any of the above claims, wherein the fresh air device is disposed on one side of the indoor unit body and the fresh air device further includes a fresh air inlet pipe, a stale air exhaust pipe, a fresh air assembly, and a stale air assembly; the base further includes a base plate connected to the base body, and the fresh air inlet pipe and the stale air exhaust pipe are disposed on the base plate; The fresh air assembly and the stale air assembly are arranged side by side at the bottom of the base body; the fresh air assembly includes a fresh air volute and a fresh air volute cover, which are fastened together to form a fresh air cavity; the fresh air cavity has a fresh air cavity inlet and a fresh air cavity outlet, the fresh air cavity inlet is connected to the air outlet of the first heat exchange cavity, and the fresh air cavity outlet is connected to the indoor environment; the air inlet of the first heat exchange cavity is connected to the outdoor environment through the fresh air inlet pipe; The turbid air assembly includes a turbid air volute and a turbid air volute cover, which are fastened together to form a turbid air cavity; the turbid air cavity has a turbid air cavity inlet and a turbid air cavity outlet, the turbid air cavity inlet is connected to the air outlet of the second heat exchange cavity, and the turbid air cavity outlet is connected to the outside through the turbid air exhaust pipe. Outdoor fresh air from the first heat exchange chamber enters the fresh air chamber and is then discharged into the room; indoor stale air from the second heat exchange chamber enters the stale air chamber and is then discharged into the outside.

[0014] Compared with the prior art, the main advantages of the present invention are as follows: (1) The base body forms three heat exchange chambers. Any two of the three heat exchange chambers are arranged adjacent to each other. The fluid in any one heat exchange chamber can exchange heat with the fluid in the other two heat exchange chambers. In any one of the three heat exchange chambers, outdoor fresh air can flow through it and exchange heat with the fluid flowing through the other one or two heat exchange chambers. The outdoor fresh air has a large heat exchange area and a long heat exchange time with the fluid, so that the temperature distribution of the fresh air after heat exchange is uniform and the heat exchange effect is obvious. This improves the energy utilization rate of the fluid and solves the problems of uneven temperature distribution of fresh air after heat exchange, insignificant heat exchange effect and energy waste of indoor turbid air. (2) The three heat exchange chambers include the first heat exchange chamber, the second heat exchange chamber and the third heat exchange chamber. Outdoor fresh air can enter the first heat exchange chamber, indoor stale air can enter the second heat exchange chamber, and water can flow through the third heat exchange chamber. Part of the energy of indoor stale air can be directly transferred to outdoor fresh air, and another part of the energy can be transferred to outdoor fresh air through water, which improves the energy utilization rate of indoor stale air, makes heat exchange more complete, ensures that the temperature of outdoor fresh air introduced into the room is close to the temperature of indoor air, and reduces the impact of outdoor fresh air on indoor air. (3) The first partition and the second partition divide the base cavity into the first heat exchange cavity, the second heat exchange cavity and the third heat exchange cavity; the second partition is inclined and forms a serpentine flow channel, using water as the intermediate heat exchange medium, so that the water circulates along the flow channel, which increases the heat exchange area between indoor turbid air and water and the heat exchange area between outdoor fresh air and water, thereby improving the heat exchange efficiency between indoor turbid air and outdoor fresh air. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0017] Figure 1 This is a schematic diagram of an embodiment of the outdoor fresh air flow path in the fresh air device provided by the present invention; Figure 2 This is a schematic diagram of an embodiment of the indoor stale air flow path in the fresh air device provided by the present invention; Figure 3a , Figure 3b and Figure 3c This is a schematic diagram of the external structure of the base embodiment provided by the present invention; Figure 4a , Figure 4b and Figure 4c This is a schematic diagram of the internal structure of the base embodiment provided by the present invention; In the picture: 1-Base; 11-Base body; 111-First heat exchange chamber; 112-Second heat exchange chamber; 113-Third heat exchange chamber; 12-Base plate; 131-Base side wall; 132-Base top wall; 1321-First turbid air inlet; 21-First partition; 22-Second partition; 23-Flow channel; 231-First flow channel section; 232-Second flow channel section; 24-First water inlet pipe; 25-Drain pipe; 261-Fresh air inlet pipe; 262-Stale air exhaust pipe; 3-Fresh air device; 31-Mask; 321-Fresh air assembly; 322-Fresh air fan blade; 331-Dull air assembly; 332-Dull air fan blade. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0020] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0021] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0022] In existing fresh air systems, the heat exchanger structure is poorly designed, resulting in a small heat exchange area and short heat exchange time between fresh and stale air. This leads to uneven temperature distribution of the fresh air after heat exchange, insignificant heat exchange effect, and energy waste from indoor stale air. This invention creatively provides a fresh air device, including a base, which includes a base body. The base body forms three heat exchange chambers, any two of which are arranged adjacent to each other, and the fluid in any one heat exchange chamber can exchange heat with the fluids in the other two heat exchange chambers. Outdoor fresh air can flow through any one of the three heat exchange chambers and exchange heat with the fluid flowing through the other one or two heat exchange chambers. The large heat exchange area and long heat exchange time between the outdoor fresh air and the fluid result in a uniform temperature distribution of the fresh air after heat exchange, a significant heat exchange effect, and improved energy utilization of the fluid. This solves the problems of uneven temperature distribution of fresh air after heat exchange, insignificant heat exchange effect, and energy waste from indoor stale air.

[0023] Example 1 <Fresh Air System> This embodiment provides a fresh air device 3, including a base 1, the base 1 including a base body 11, the base body 11 forming three heat exchange chambers, any two of the three heat exchange chambers are arranged adjacent to each other, and the fluid in any one heat exchange chamber can exchange heat with the fluid in the other two heat exchange chambers. In any of the three heat exchange chambers, outdoor fresh air can flow through one heat exchange chamber and exchange heat with the fluid flowing through another heat exchange chamber or the other two heat exchange chambers.

[0024] Furthermore, such as Figures 1 to 4c As shown, the three heat exchange chambers include a first heat exchange chamber 111, a second heat exchange chamber 112, and a third heat exchange chamber 113. The first heat exchange chamber 111 is connected to the outside, and fresh outdoor air can enter the first heat exchange chamber 111. The second heat exchange chamber 112 is connected to the inside, and stale indoor air can enter the second heat exchange chamber 112. Water can flow through the third heat exchange chamber 113. A portion of the energy of the indoor stale air can be directly transferred to the outdoor fresh air, while another portion can be transferred to the outdoor fresh air via water. This improves the energy utilization rate of the indoor stale air, makes heat exchange more thorough, ensures that the temperature of the outdoor fresh air introduced into the room is close to the indoor air temperature, and reduces the impact of the outdoor fresh air on the indoor air.

[0025] To address the problem of low heat exchange efficiency caused by unreasonable structural and positional design of the three heat exchange chambers, this embodiment proposes that the first heat exchange chamber 111 and the second heat exchange chamber 112 are arranged side by side along the height direction of the base body 11, and the first heat exchange chamber 111 is located at the bottom of the second heat exchange chamber 112; the third heat exchange chamber 113 is located on the same side of the first heat exchange chamber 111 and the second heat exchange chamber 112 and is located on the air outlet side of the first heat exchange chamber 111.

[0026] Furthermore, the base body 11 forms a base cavity; the fresh air device 3 also includes a first partition 21 and a second partition 22, which are disposed within the base cavity and are divided into a first heat exchange cavity 111, a second heat exchange cavity 112, and a third heat exchange cavity 113; one wall of the first partition 21 is located within the first heat exchange cavity 111, and the other wall of the first partition 21 is located within the second heat exchange cavity 112; one wall of the second partition 22 is located within the third heat exchange cavity 113, a portion of the other wall of the second partition 22 is located within the first heat exchange cavity 111, and another portion of the other wall of the second partition 22 is located within the second heat exchange cavity 112; The second partition 22 is inclined, and a flow channel 23 is formed on the wall of the third heat exchange chamber 113, through which water can flow. Water is used as the intermediate heat exchange medium, and the water circulates along the flow channel 23, which increases the heat exchange area between indoor stale air and water and the heat exchange area between outdoor fresh air and water, thereby improving the heat exchange efficiency between indoor stale air and outdoor fresh air.

[0027] In response to the problem that the heat exchange time between water and indoor stale air or outdoor fresh air is short due to unreasonable structural design of the flow channel 23, this embodiment proposes that the flow channel 23 extends from the top of the base body 11 to the bottom of the base body 11, and the flow channel 23 has a serpentine structure. The flow channel 23 includes a first flow channel section 231 corresponding to the first heat exchange chamber 111 and a second flow channel section 232 corresponding to the second heat exchange chamber 112. When the water flows through the second flow channel section 232, it completes heat exchange with the turbid air in the second heat exchange chamber 112, and then flows through the first flow channel section 231 to complete heat exchange with the fresh air in the first heat exchange chamber 111.

[0028] In addition, the base body 11 includes a base sidewall 131; the fresh air device 3 also includes a first water inlet pipe 24, a second water inlet pipe and a drain pipe 25. The first water inlet pipe 24 is disposed on the base sidewall 131 and communicates with the water inlet end of the first flow channel section 231; the second water inlet pipe is disposed on the base sidewall 131 and close to the top of the base body 11, and communicates with the water inlet end of the second flow channel section 232; the drain pipe 25 is disposed on the base sidewall 131 and close to the bottom of the base body 11, and communicates with the third heat exchange chamber 113 and is away from the second partition 22. When all three heat exchange chambers need to complete heat exchange, the second inlet pipe and drain pipe 25 are opened, and the first inlet pipe 24 is closed. Water then enters the second flow channel section 232 through the second inlet pipe and exchanges heat with the turbid air in the second heat exchange chamber 112; then it passes through the first flow channel section 231 and exchanges heat with the fresh air in the first heat exchange chamber 111, and finally is discharged through the drain pipe 25. This improves the energy utilization rate of indoor turbid air, makes heat exchange more complete, ensures that the temperature of the outdoor fresh air introduced into the room is close to the indoor air temperature, and reduces the impact of outdoor fresh air on indoor air. When only the first heat exchange chamber 111 and the third heat exchange chamber 113 need to complete the heat exchange, the first water inlet pipe 24 and the drain pipe 25 are opened, and the second water inlet pipe is closed. Water then enters the first flow channel section 231 through the first water inlet pipe and exchanges heat with the fresh air in the first heat exchange chamber 111. Finally, it is discharged through the drain pipe 25. When there is little energy available for indoor stale air, heat exchange can be carried out directly between water and outdoor fresh air, so that the temperature of outdoor fresh air is close to the temperature of indoor air.

[0029] <Fresh Air Conditioner> like Figures 1 to 4c As shown, this embodiment also proposes a fresh air air conditioner, including an indoor unit body and a fresh air device 3 as described above. The fresh air device 3 is disposed on one side of the indoor unit body and the fresh air device 3 further includes a fresh air inlet pipe 261, a stale air exhaust pipe 262, a fresh air assembly 321, and a stale air assembly 331. The base 1 further includes a base plate 12 connected to the base body 11, and the fresh air inlet pipe 261 and the stale air exhaust pipe 262 are disposed on the base plate 12. Fresh air assembly 321 and stale air assembly 331 are arranged side by side at the bottom of the base body 11. Fresh air assembly 321 includes fresh air volute, fresh air volute cover and fresh air fan blade 322. Fresh air volute and fresh air volute cover are fastened together to form a fresh air cavity. Fresh air fan blade 322 is rotatably arranged in the fresh air cavity. Fresh air cavity has a fresh air cavity inlet and a fresh air cavity outlet. Fresh air cavity inlet is connected to the air outlet of first heat exchange cavity 111 and fresh air cavity outlet is connected to the indoor environment. Air inlet of first heat exchange cavity 111 is connected to the outdoor environment through fresh air inlet pipe 261. The turbid air assembly 331 includes a turbid air volute, a turbid air volute cover, and a turbid air fan blade 332. The turbid air volute and the turbid air volute cover are fastened together to form a turbid air cavity. The turbid air fan blade 332 is rotatably disposed in the turbid air cavity. The turbid air cavity has a turbid air cavity inlet and a turbid air cavity outlet. The turbid air cavity inlet is connected to the air outlet of the second heat exchange cavity 112, and the turbid air cavity outlet is connected to the outside through a turbid air exhaust pipe 262. Outdoor fresh air enters the fresh air chamber in the first heat exchange chamber 111 and is then discharged into the room; indoor stale air enters the stale air chamber in the second heat exchange chamber 112 and is then discharged into the outside.

[0030] The fresh air device 3 also includes a mask 31, and the base 1, fresh air component 321 and stale air component 331 are all installed inside the mask 31.

[0031] Example 2 Unlike Embodiment 1, the base body 11 includes a base top wall 132 and a base side wall 131. The base top wall 132 forms a first turbid air inlet 1321, which communicates with the second heat exchange chamber 112. The base side wall 131 forms a second turbid air inlet, which communicates with the third heat exchange chamber 113 and is located near the bottom of the base body 11. The second partition 22 also forms a turbid air communication port near the first partition 21, which communicates with the second heat exchange chamber 112 and the third heat exchange chamber 113. A baffle is slidably provided at the turbid air communication port, allowing the baffle to slide and thus open or close the turbid air communication port. When only the first heat exchange chamber 111 and the second heat exchange chamber 112 are needed to complete the heat exchange, the first turbid air inlet 1321 is opened, and the second turbid air inlet and the turbid air connection are closed. Then the turbid air enters the second heat exchange chamber 112 through the first turbid air inlet 1321 and completes the heat exchange with the fresh air flowing through the first heat exchange chamber 111. When all three heat exchange chambers need to complete heat exchange, the first turbid air inlet 1321 is closed, and the second turbid air inlet and the turbid air connection are both opened. The turbid air then enters the third heat exchange chamber 113 through the second turbid air inlet, first completing heat exchange with the fresh air flowing through the first heat exchange chamber 111, and then entering the second heat exchange chamber 112 through the turbid air vent, completing heat exchange again with the fresh air flowing through the first heat exchange chamber 111. When there is a lot of usable energy in the indoor turbid air, the heat exchange area between the indoor turbid air and the outdoor fresh air can be increased, and the heat exchange time between the indoor turbid air and the outdoor fresh air can be extended, so that the temperature of the outdoor fresh air is close to the temperature of the indoor air.

[0032] Example 3 Unlike Embodiment 1, the flow channel 23 includes multiple channels, each of which extends along the width direction of the base body 11, and the multiple channels 23 are spaced apart along the height direction of the base body 11. The flow channel 23 allows water to be partially stored when it flows along the second partition 22, which prolongs the heat exchange time between water and indoor stale air and outdoor fresh air, while increasing the heat exchange area between water and indoor stale air and outdoor fresh air, and further improving the heat exchange efficiency between water and indoor stale air and outdoor fresh air.

[0033] Furthermore, the second partition 22 includes a first wall and a second wall, the first wall being located inside the third heat exchange cavity 113 and the second wall being away from the third heat exchange cavity 113; the flow channel 23 is a groove structure that extends from the first wall to the second wall.

[0034] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A fresh air device, characterized in that, The fresh air device includes a base, the base includes a base body, the base body forms three heat exchange chambers, any two of the three heat exchange chambers are arranged adjacent to each other, and the fluid in any one of the heat exchange chambers can exchange heat with the fluids in the other two heat exchange chambers. In any one of the three heat exchange chambers, outdoor fresh air flows through one of the heat exchange chambers and completes heat exchange with the fluid flowing through the other heat exchange chamber or the other two heat exchange chambers; The three heat exchange chambers include a first heat exchange chamber, a second heat exchange chamber, and a third heat exchange chamber. The first heat exchange chamber is connected to the outside, and fresh outdoor air enters the first heat exchange chamber. The second heat exchange chamber is connected to the room, and the stale air in the room enters the second heat exchange chamber; Water flows through the third heat exchange chamber; The first heat exchange chamber and the second heat exchange chamber are arranged side by side along the height direction of the base body, and the first heat exchange chamber is located at the bottom of the second heat exchange chamber; the third heat exchange chamber is arranged on the same side of the first heat exchange chamber and the second heat exchange chamber and is located on the air outlet side of the first heat exchange chamber.

2. The fresh air device according to claim 1, characterized in that, The base body forms a base cavity; the fresh air device also includes a first partition and a second partition, which are disposed in the base cavity and divide the base cavity into a first heat exchange cavity, a second heat exchange cavity and a third heat exchange cavity; One wall of the first partition is located inside the first heat exchange cavity, and the other wall of the first partition is located inside the second heat exchange cavity; One wall of the second partition is located inside the third heat exchange chamber, a portion of the other wall of the second partition is located inside the first heat exchange chamber, and another portion of the other wall of the second partition is located inside the second heat exchange chamber; The second partition is inclined, and a flow channel is formed on the wall of the third heat exchange chamber, through which water can flow.

3. The fresh air device according to claim 2, characterized in that, The flow channel extends from the top of the base body to the bottom of the base body, and the flow channel has a serpentine structure; The flow channel includes a first flow channel section corresponding to the first heat exchange cavity and a second flow channel section corresponding to the second heat exchange cavity; When the water flows through the second flow channel section, it completes heat exchange with the turbid air in the second heat exchange chamber, and then flows through the first flow channel section and completes heat exchange with the fresh air in the first heat exchange chamber.

4. The fresh air device according to claim 3, characterized in that, The base body includes a base sidewall; the fresh air device further includes a first water inlet pipe, a second water inlet pipe, and a drain pipe. The first water inlet pipe is disposed on the base sidewall and communicates with the water inlet end of the first flow channel section; the second water inlet pipe is disposed on the base sidewall and near the top of the base body, and communicates with the water inlet end of the second flow channel section; the drain pipe is disposed on the base sidewall and near the bottom of the base body, and communicates with the third heat exchange chamber and is away from the second partition. When all three heat exchange chambers need to complete heat exchange, the second inlet pipe and the drain pipe are opened, and the first inlet pipe is closed. Water then enters the second flow channel section through the second inlet pipe and is discharged through the first flow channel section and the drain pipe. When only the first heat exchange chamber and the third heat exchange chamber need to complete the heat exchange, the first water inlet pipe and the drain pipe are opened, and the second water inlet pipe is closed. Then, water enters the first flow channel section through the first water inlet pipe and is discharged through the drain pipe.

5. The fresh air device according to claim 3, characterized in that, The base body includes a base top wall and a base side wall. The base top wall forms a first turbid air inlet, which communicates with a second heat exchange chamber. The base side wall forms a second turbid air inlet, which communicates with a third heat exchange chamber and is located near the bottom of the base body. A turbid air communication port is also formed near the first partition of the second partition, which communicates with the second heat exchange chamber and the third heat exchange chamber. A baffle is slidably provided at the turbid air communication port, allowing the baffle to slide and thus open or close the turbid air communication port. When only the first heat exchange chamber and the second heat exchange chamber are needed to complete the heat exchange, the first turbid air inlet is opened, and the second turbid air inlet and the turbid air connection port are closed. Then the turbid air enters the second heat exchange chamber through the first turbid air inlet and completes the heat exchange with the fresh air flowing through the first heat exchange chamber. When all three heat exchange chambers need to complete heat exchange, the first turbid air inlet is closed, and the second turbid air inlet and the turbid air connection port are both opened. The turbid air then enters the third heat exchange chamber through the second turbid air inlet, first completing heat exchange with the fresh air flowing through the first heat exchange chamber, and then entering the second heat exchange chamber through the turbid air vent, completing heat exchange again with the fresh air flowing through the first heat exchange chamber.

6. The fresh air device according to claim 2, characterized in that, The flow channels include multiple channels, each of which extends along the width direction of the base body, and the multiple channels are spaced apart along the height direction of the base body; the flow channels allow water to be partially stored when it flows along the second baffle.

7. The fresh air device according to claim 6, characterized in that, The second partition includes a first wall and a second wall, the first wall being located inside the third heat exchange cavity and the second wall being away from the third heat exchange cavity; the flow channel is a groove structure that extends from the first wall to the second wall.

8. A fresh air conditioning system, characterized in that, The fresh air conditioner includes an indoor unit body and a fresh air device as described in any one of claims 1-7. The fresh air device is disposed on one side of the indoor unit body and further includes a fresh air inlet pipe, a stale air exhaust pipe, a fresh air assembly, and a stale air assembly. The base further includes a base plate connected to the base body, and the fresh air inlet pipe and the stale air exhaust pipe are disposed on the base plate. The fresh air assembly and the stale air assembly are arranged side by side at the bottom of the base body; the fresh air assembly includes a fresh air volute and a fresh air volute cover, which are fastened together to form a fresh air cavity; the fresh air cavity has a fresh air cavity inlet and a fresh air cavity outlet, the fresh air cavity inlet is connected to the air outlet of the first heat exchange cavity, and the fresh air cavity outlet is connected to the indoor environment; the air inlet of the first heat exchange cavity is connected to the outdoor environment through the fresh air inlet pipe; The turbid air assembly includes a turbid air volute and a turbid air volute cover, which are fastened together to form a turbid air cavity; the turbid air cavity has a turbid air cavity inlet and a turbid air cavity outlet, the turbid air cavity inlet is connected to the air outlet of the second heat exchange cavity, and the turbid air cavity outlet is connected to the outside through the turbid air exhaust pipe. Outdoor fresh air in the first heat exchange chamber enters the fresh air chamber and is then discharged into the room; The stale air in the second heat exchange chamber enters the stale air chamber and is then discharged to the outside.

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