CN220017607U - Fresh air module and fresh air conditioner - Google Patents

Abstract

The utility model provides a fresh air module and a fresh air conditioner, and relates to the technical field of air conditioners. The fresh air module comprises a first volute, a second volute and a flow guiding assembly. In the utility model, the side wall of the first volute is provided with the sleeve, and the flow guide component is arranged on the top wall of the first volute. The flow guiding assembly comprises a first flow guiding piece extending along the direction perpendicular to the air inlet direction, and a second flow guiding piece intersecting with the first flow guiding piece, wherein radial air flow is switched to flow in the axial direction through the first flow guiding piece, the air flow is turned and guided into the second volute in advance to do work, the second flow guiding piece rectifies the air flow in the radial direction, the transverse flow of the air flow is restrained, the collision loss of the fluid with the wall surfaces of the first volute and the second volute is reduced, the speed non-uniformity of incoming flow in the radial direction is improved, the turbulence degree is reduced, the cavity sound is reduced, and the fresh air quantity is improved.

Description

Fresh air module and fresh air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a fresh air module and an air conditioner.

Background

In recent years, with the introduction of fresh air conditioning systems, higher demands are being placed on indoor air quality. The fresh air module introduces outdoor fresh air into the room through the fresh air pipe, so that a micro-positive pressure environment is formed in the room, and the indoor original air is extruded out through a door seam, a window seam and the like, so that the quality of the indoor air is improved.

However, the existing fresh air module brings fresh air and simultaneously generates cavity sound, and meanwhile, the problem of small fresh air volume exists, so that the user experience is seriously affected.

Disclosure of Invention

The utility model provides a fresh air module and a fresh air conditioner, and aims to solve the technical problems of large cavity sound and small fresh air volume of the existing fresh air module.

The utility model provides a fresh air module, which comprises a first volute, a second volute and a flow guiding assembly;

the first volute comprises a top wall and a side wall extending to one side from the periphery of the top wall, an air inlet cavity is formed by surrounding the top wall and the side wall, a sleeve is arranged on the side wall and communicated with the air inlet cavity, and outdoor air is introduced into the air inlet cavity;

the second volute is connected with the first volute to form a fresh air channel;

the flow guide assembly is arranged on the top wall and is opposite to the air outlet of the sleeve; the flow guiding assembly comprises a first flow guiding piece and a second flow guiding piece; the first flow guiding piece extends along the direction perpendicular to the air inlet direction and is used for introducing the outdoor air in the air inlet cavity into the second volute; the second flow guiding piece is arranged in a crossing way with the first flow guiding piece and is used for rectifying the outdoor air in the air inlet cavity.

In one possible implementation manner of the present utility model, the number of the second flow guiding elements is plural, and the plural second flow guiding elements are arranged at intervals along the extending direction of the first flow guiding element.

In one possible implementation manner of the present utility model, the second flow guiding member is perpendicular to the first flow guiding member, and one end of the second flow guiding member is fixedly connected with the top wall; the first flow guiding piece is positioned in the middle of the second flow guiding piece.

In one possible implementation manner of the present utility model, the second flow guiding member is perpendicular to the first flow guiding member, and one end of the second flow guiding member is fixedly connected with the top wall; the first flow guiding piece is positioned at one end of the second flow guiding piece far away from the top wall.

In one possible implementation of the present utility model, the second flow guiding member includes a flow guiding plate, and the thickness of the flow guiding plate gradually decreases along the air inlet direction.

In one possible implementation of the present utility model, the front end of the second flow guide is in the form of an airfoil.

In one possible implementation manner of the present utility model, the first flow guiding element includes a windward surface, and the windward surface is arc-shaped;

and/or, the windward angle of the first diversion element is 30-60 degrees.

In one possible implementation manner of the present utility model, the number of the first flow guiding members is plural, and the plural first flow guiding members are disposed at intervals along the connecting line direction of the first volute and the second volute.

In one possible implementation of the present utility model, the side wall includes a rear side wall disposed opposite the sleeve, and left and right side walls located on opposite sides of the rear side wall;

the guide assembly is arranged between the rear side wall and the sleeve, one end of the first guide piece extends to the left side wall, and the other end of the first guide piece extends to the right side wall.

On the other hand, the utility model also provides a fresh air conditioner which comprises an air conditioner body and the fresh air module, wherein the fresh air module is used for introducing outdoor air into the air conditioner body.

The utility model provides a fresh air module which comprises a first volute, a second volute and a flow guiding assembly. The side wall of the first volute is provided with a sleeve, and the flow guide assembly is arranged on the top wall of the first volute. The flow guiding assembly comprises a first flow guiding piece extending along the direction perpendicular to the air inlet direction, and a second flow guiding piece intersecting with the first flow guiding piece, wherein radial air flow is switched to flow in the axial direction through the first flow guiding piece, the air flow is turned and guided into the second volute in advance to do work, the second flow guiding piece rectifies the air flow in the radial direction, the transverse flow of the air flow is restrained, the collision loss of the fluid with the wall surfaces of the first volute and the second volute is reduced, the speed non-uniformity of incoming flow in the radial direction is improved, the turbulence degree is reduced, the cavity sound is reduced, and the fresh air quantity is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an explosion structure of an embodiment of a fresh air conditioner according to an embodiment of the present utility model;

FIG. 2 is a schematic structural diagram of a fresh air module according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of an exploded view of one embodiment of a fresh air module provided in an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a first volute provided in an embodiment of the utility model;

FIG. 5 is a schematic view of an exploded view of one embodiment of a baffle assembly provided in an embodiment of the present utility model;

fig. 6 is a partial enlarged view at a in fig. 5.

Reference numerals:

100. fresh air conditioner; 11. a housing; 12. a base assembly; 13. a fan assembly; 14. an electrical control assembly; 15. a heat exchanger assembly; 16. a filter screen; 17. an air guide assembly; 20. a fresh air module; 21. a first volute; 211. a top wall; 212. a rear sidewall; 213. a left side wall; 215. an air inlet cavity; 22. a second volute; 23. a centrifugal fan; 24. a flow guiding assembly; 241. a first flow guide; 242. a second flow guide; 25. a sleeve; 251. an air inlet section; 252. a connection section; 2521. the bottom surface of the connecting section; 26. a new air pipe; 27. a filter screen bracket; 28. a deflector ring assembly; 291. a first foam; 292. a second foam; 30. an air port cover.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described as "exemplary" in this disclosure is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the utility model. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present utility model may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the utility model with unnecessary detail. Thus, the present utility model is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

The embodiment of the utility model provides a fresh air module and a fresh air conditioner, and aims to solve the technical problems of large cavity sound and small fresh air volume of the existing fresh air conditioner.

As shown in fig. 1 to 6, a fresh air conditioner 100 according to an embodiment of the present utility model includes an air conditioner body and a fresh air module 20. The fresh air module 20 is disposed in the air conditioner body, and is used for introducing outdoor air into the air conditioner body.

The air conditioner body, i.e., the air conditioner (room air conditioner), is used for providing a unit for treating air temperature change to a space region (generally, closed). The function of the device is to adjust the parameters of temperature, humidity, cleanliness, air flow rate and the like of the air in the room (or the closed space or the area) so as to meet the requirements of human comfort or the technological process.

The air conditioner body generally comprises an indoor unit and an outdoor unit. In the present utility model, the indoor unit may be a hanging machine, a cabinet machine, or an air duct machine, which is not limited herein. The following description will take an air duct machine as an example. Specifically, the indoor unit includes a casing 11, and the casing 11 extends in the left-right direction as a whole. The casing 11 is generally in a cuboid structure, and an installation cavity is formed in the casing to install components such as a base component 12, a heat exchanger component 15, a fan component 13, an air guide component 17, an electric control component 14, a filter screen 16 and the like of the indoor unit of the air conditioner.

In some embodiments of the utility model, the housing 11 is a sheet metal housing. The front and rear sides of the shell 11 are respectively provided with an indoor air inlet and an indoor air outlet which are communicated with the installation cavity. The base assembly 12 is used to mount a heat exchanger assembly 15, a fan assembly 13, an electrical control assembly 14, and the like. The fan assembly 13 comprises a cross flow fan. The cross flow fan is disposed along the length direction of the housing 11. Indoor air enters the air-conditioning shell 11 through the indoor air inlet, is filtered through the filter screen 16 in the air-conditioning shell 11, enters the through-flow air duct after exchanging heat through the heat exchanger assembly 15, and is blown out of the room through the indoor air outlet, so that the refrigerating or heating of the indoor air is realized. The air guide assembly 17 is disposed at an indoor air outlet of the housing 11, and is used for adjusting an indoor air outlet direction. The fresh air module 20 is arranged at one end of the cross-flow fan and is arranged near one side where the indoor air inlet is located. The air outlet of the fresh air module 20 may be in communication with an indoor air inlet for introducing outdoor air to the air conditioning body. It should be noted that, in the present utility model, the base assembly 12, the heat exchanger assembly 15, the fan assembly 13, the air guiding assembly 17, the electric control assembly 14, and the filter screen 16 do not belong to the improvement points of the present utility model, and the specific structure thereof may refer to the content of the prior art, and is not limited herein.

When the existing fresh air module works, as outdoor air enters the fresh air module through the fresh air pipe, the speed distribution range is large, the large turbulence exists, the operation noise is large, and the fresh air quantity is small. In view of the above, the utility model provides a fresh air module with small operation noise and large fresh air quantity. Referring to fig. 2 to 5, the fresh air module 20 includes a first volute 21, a second volute 22, a centrifugal fan 23, and a flow guiding assembly 24. The first volute 21 comprises a top wall 211 and a side wall (212; 213; 214) extending from the periphery of the top wall 211 to the side of the second volute 22. The top wall 211 and the side walls enclose an air inlet chamber 215. The side wall is provided with a sleeve 25, the sleeve 25 is communicated with the air inlet cavity 215, and the sleeve 25 is used for introducing outdoor air into the air inlet cavity 215. The second volute 22 is connected with the first volute 21 to form a fresh air duct. Illustratively, the first scroll 21 is an upper scroll and the second scroll 22 is a lower scroll. The centrifugal fan of the fresh air module is disposed within the second volute 22. The flow guiding assembly 24 is disposed on the top wall 211 and is disposed opposite to the air outlet of the sleeve 25 (i.e., the end of the sleeve near the air inlet chamber).

Wherein, the flow guiding assembly 24 comprises a first flow guiding element 241 and a second flow guiding element 242. The first flow guiding member 241 extends in a direction perpendicular to the air intake direction, and is used for guiding the outdoor air in the air intake cavity 215 into the second volute 22. The second guiding element 242 is disposed across the first guiding element 241, and is configured to rectify the outdoor air in the air intake cavity.

The air intake direction refers to a direction in which the outdoor air enters the air intake chamber 215, that is, a direction substantially parallel to the axial direction of the sleeve 25. The cross arrangement of the first flow guiding element 241 and the second flow guiding element 242 means that the first flow guiding element 241 and the second flow guiding element 242 form a certain included angle, and the included angle can be set according to specific needs. For example, referring to fig. 5, in the embodiment of the present utility model, the first flow guiding member 241 is disposed substantially perpendicular to the second flow guiding member, and this structure is beneficial to further reducing the cavity sound and increasing the air volume of the fresh air. The first flow guiding element 241 is used for guiding the outdoor air in the air inlet cavity into the second volute 22, that is, the first flow guiding element 241 is used for guiding the outdoor air (also referred to as air flow) blown to the first flow guiding element to the second volute 22, so that the radial air flow is switched to flow in the axial direction, and is turned and guided into the second volute 22 in advance to do work.

The utility model sets the diversion component 24 in the air inlet cavity 215 of the fresh air module. The diversion assembly 24 includes a first diversion piece 241 and a second diversion piece 242 which are arranged in a crossing way. The first flow guiding element 241 switches the radial air flow into the axial flow, and turns and guides the radial air flow into the second volute 22 in advance to do work. The second flow guiding piece 242 rectifies the air flow in the radial direction, inhibits the air flow from flowing transversely, reduces the collision loss of the air flow with the wall surfaces of the first volute 21 and the second volute 22, and improves the speed non-uniformity of the air flow in the radial direction, thereby reducing the turbulence, reducing the cavity sound and improving the fresh air quantity.

In some embodiments of the present utility model, the number of the second flow guiding elements 242 is plural, and the plurality of the second flow guiding elements 242 are spaced apart along the extending direction of the first flow guiding element 241. Specifically, the number of second deflectors 242 may be 2, 3, 4, 5, 6, 7, etc. Preferably, the number of the second flow guide 242 is 4 to 9. In this embodiment, the plurality of second flow guiding members 242 are disposed at intervals along the extending direction of the first flow guiding member 241, so as to inhibit the airflow from flowing transversely, improve the rectifying effect, and speed uniformity of the airflow in the radial direction, thereby further reducing the turbulence of the airflow, reducing the cavity sound, and improving the air volume of the fresh air.

In some embodiments of the utility model, the second flow guide 242 is substantially perpendicular to the first flow guide 241. One end of the second guiding element 242 is fixedly connected to the top wall 211. The first flow guide 241 is located at a middle portion of the second flow guide 242 or at an end far from the top wall 211. Illustratively, the first scroll 21, the first deflector 241, and the second deflector 242 are integrally formed. Of course, in other embodiments of the present utility model, the first flow guiding element 241 and the second flow guiding element 242 may be integrally formed, and the second flow guiding element 242 may be fastened to the top wall 211 by screwing, bonding, clamping, or the like.

In some embodiments of the present utility model, the second baffle 242 comprises a baffle, and the thickness of the baffle gradually decreases along the air inlet direction, that is, the front end of the baffle is wider and the rear end is narrower. Preferably, the front end (the end close to the sleeve) of the second flow guiding member is in an airfoil shape, and the tail end (the end far from the sleeve) of the second flow guiding member is in a pointed shape. This structure is provided with and is favorable to reducing the resistance of second water conservancy diversion piece 242 to the air current, prevents that the air current from separating at the front end abrupt change, and the rear end gradual change separates and produces the vortex, further improves the rectification effect.

In some embodiments of the present utility model, the first diversion element 241 includes a windward side 2411, and the windward side is in a smooth arc shape. This structure is provided with and is favorable to reducing the resistance of first water conservancy diversion piece 241 to the air current, further improves the fresh air amount of wind.

In some embodiments of the present utility model, referring to fig. 6, the windward angle θ of the first diversion is 30 ° to 60 °. The diversion effect is not obvious when the windward angle is smaller than 30 degrees, and the fluid separation is easy to be caused when the windward angle is larger than 60 degrees.

In some embodiments of the present utility model, the number of the first diversion elements 241 is plural. Specifically, the number of the first flow guides 241 may be 2, 3, 4, 5, 6, 7, etc. Preferably, the number of the second flow guide 242 is 2 to 4. The first flow guiding members 241 are disposed at intervals along the connecting line direction of the first scroll casing 21 and the second scroll casing 22. This structural arrangement enables the air flow that blows to the flow guide assembly 24 to be layered in the axial direction, is favorable to improving the speed homogeneity of the air flow that gets into the second spiral case 22, further reduces the air flow turbulence, reduces the cavity sound, improves the amount of wind of new trend.

In some embodiments of the present utility model, referring to fig. 3, the fresh air module 20 further includes a fresh air duct 26. One end of the fresh air pipe 26 is connected with one end of the sleeve 25 away from the first volute 21, and the other end of the fresh air pipe 26 is communicated with the outside. Outdoor air enters the sleeve 25 through the fresh air pipe 26 and then enters the air inlet cavity 215 through the sleeve 25.

In some embodiments of the present utility model, referring to fig. 4, the sleeve 25 includes an air inlet section 251 and a connection section 252 along the flow direction of the outdoor air, and the connection section 252 is connected to the front sidewall. The bottom surface of the connection section 252 is disposed obliquely toward the top wall 211, and the connection section 252 is, illustratively, a generally flat tubular structure, and the connection section bottom surface 2521 is disposed obliquely upward. The structure can make the outdoor air flowing into the air inlet cavity 215 through the sleeve 25 blow towards the direction close to the top wall 211, so that the outdoor air flowing into the air inlet cavity 215 flows to the diversion assembly 24 more, which is beneficial to reducing cavity sound and improving fresh air volume.

In some embodiments of the present utility model, the side walls include a rear side wall 212 disposed opposite the sleeve 25, a front side wall (not shown) opposite the rear side wall, and left and right side walls 213 and 213 disposed on opposite sides of the rear side wall 212. The baffle assembly 24 is disposed between the rear sidewall 212 and the front sidewall. One end of the first guide 241 extends in a direction approaching the left sidewall 213, and the other end of the first guide 241 extends in a direction approaching the right sidewall. Specifically, the flow guide assembly 24 is disposed substantially at the middle of the top wall 211, and the distance between the flow guide assembly 24 and the rear sidewall is typically 30-60 mm. This structure is provided with and is favorable to improving the even smoothness nature that the air inlet air current led into second spiral case 22, is favorable to further reducing the cavity sound, improves the fresh air amount.

Further, the dimension of the flow guiding assembly 24 (i.e. the dimension of the first flow guiding member) is larger than the dimension of the sleeve 25 along the connecting line direction of the left side wall 213 and the right side wall. In other words, the orthographic projection of the sleeve 25 onto the deflector assembly in the direction of extension of the first deflector is located within the deflector assembly. Specifically, both ends of the first guide member extend to the left sidewall 213 and the right sidewall, respectively. The arrangement of the structure can enable the air flow flowing into the air inlet cavity 215 to flow through the first flow guiding piece as soon as possible, and flow is guided by the first flow guiding piece and then enters the second volute 22, so that the cavity sound is further reduced, and the fresh air volume is improved.

In some embodiments of the present utility model, the fresh air module 20 further includes a filter support 27 and a filter (not shown) secured to the filter support 27. Illustratively, the filter screen 16 is configured to filter outdoor air (i.e., fresh air) entering the second volute 22 from the intake air chamber 215. Specifically, the filter screen is spaced from the top wall 211 of the first scroll 21, and illustratively, the plane of the filter screen is substantially parallel to the plane of the top wall 211 of the first scroll 21. It will be appreciated that there is also a gap between the screen and the end of the baffle assembly 24 facing away from the top wall 211, which gap may be provided as desired, and is not limited herein.

In some embodiments of the present utility model, referring to FIG. 3, the fresh air module 20 further includes a deflector assembly 28. The deflector ring assembly 28 comprises a deflector ring. The deflector ring is used for enabling the air flow in the air inlet cavity 215 to enter the centrifugal fan 23 more uniformly. Specifically, the deflector ring assembly 28 is disposed between the screen support 27 and the centrifugal fan 23. The guide ring is located on the air inlet side of the centrifugal fan 23, and is disposed opposite to the air inlet of the centrifugal fan 23.

In some embodiments of the present utility model, the fresh air module 20 also includes a foam assembly. Illustratively, the foam assembly includes oppositely disposed first and second foams 291, 292. The foam assembly is disposed between the first volute 21 and the second volute 22. The filter screen bracket 27 and the guide ring assembly 28 are fixed in the fresh air module 20 through foam assemblies.

In some embodiments of the present utility model, the fresh air module 20 further includes an air flap 30. The air flap 30 is disposed at a fresh air outlet of the fresh air module 20, that is, at an air outlet of the second volute 22, and is used for controlling opening or closing of the fresh air outlet. In the foregoing embodiments, the descriptions of the embodiments are focused on, and the portions of one embodiment that are not described in detail in the foregoing embodiments may be referred to in the foregoing detailed description of other embodiments, which are not described herein again.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements and adaptations of the utility model may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within the present disclosure, and therefore, such modifications, improvements, and adaptations are intended to be within the spirit and scope of the exemplary embodiments of the present disclosure.

Meanwhile, the present utility model uses specific words to describe embodiments of the present utility model. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the utility model. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the utility model may be combined as suitable.

Similarly, it should be noted that in order to simplify the description of the present disclosure and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are required by the subject utility model. Indeed, less than all of the features of a single embodiment disclosed above.

In some embodiments, numbers describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for a 20% variation. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations in some embodiments for use in determining the breadth of the range, in particular embodiments, the numerical values set forth herein are as precisely as possible.

Each patent, patent application publication, and other material, such as articles, books, specifications, publications, documents, etc., cited herein is hereby incorporated by reference in its entirety except for any application history file that is inconsistent or otherwise conflict with the present disclosure, which places the broadest scope of the claims in this application (whether presently or after it is attached to this application). It is noted that the description, definition, and/or use of the term in the appended claims controls the description, definition, and/or use of the term in this utility model if the description, definition, and/or use of the term in the appended claims does not conform to or conflict with the present disclosure.

The fresh air module and the fresh air conditioner provided by the embodiment of the utility model are described in detail, and specific examples are applied to explain the principle and the implementation mode of the utility model, and the description of the above embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims (10)

1. The fresh air module is characterized by comprising a first volute, a second volute and a flow guiding assembly;

the first volute comprises a top wall and a side wall extending to one side from the periphery of the top wall, an air inlet cavity is formed by surrounding the top wall and the side wall, a sleeve is arranged on the side wall and communicated with the air inlet cavity, and outdoor air is introduced into the air inlet cavity;

the second volute is connected with the first volute to form a fresh air channel;

the flow guide assembly is arranged on the top wall and is opposite to the air outlet of the sleeve; the flow guiding assembly comprises a first flow guiding piece and a second flow guiding piece; the first flow guiding piece extends along the direction perpendicular to the air inlet direction and is used for introducing the outdoor air in the air inlet cavity into the second volute; the second flow guiding piece is arranged in a crossing way with the first flow guiding piece and is used for rectifying the outdoor air in the air inlet cavity.

2. The fresh air module of claim 1, wherein the number of second flow guiding elements is plural, and the plural second flow guiding elements are disposed at intervals along the extending direction of the first flow guiding element.

3. The fresh air module of claim 1, wherein the second deflector is perpendicular to the first deflector, and one end of the second deflector is fixedly connected to the top wall; the first flow guiding piece is positioned in the middle of the second flow guiding piece.

4. The fresh air module of claim 1, wherein the second deflector is perpendicular to the first deflector, and one end of the second deflector is fixedly connected to the top wall; the first flow guiding piece is positioned at one end of the second flow guiding piece far away from the top wall.

5. The fresh air module of claim 1, wherein the second baffle comprises a baffle having a thickness that gradually decreases in the direction of the incoming air.

6. The fresh air module of claim 1, wherein a front end of the second deflector is airfoil-shaped.

7. The fresh air module of claim 1, wherein the first deflector comprises a windward side, the windward side being arcuate;

and/or, the windward angle of the first diversion element is 30-60 degrees.

8. The fresh air module according to any one of claims 1 to 7, wherein the number of the first flow guiding members is plural, and the plural first flow guiding members are disposed at intervals along the connecting line direction of the first scroll case and the second scroll case.

9. The fresh air module of claim 1, wherein the side walls include a rear side wall disposed opposite the sleeve, and left and right side walls on opposite sides of the rear side wall;

the guide assembly is arranged between the rear side wall and the sleeve, one end of the first guide piece extends to the left side wall, and the other end of the first guide piece extends to the right side wall.

10. A fresh air conditioner comprising an air conditioning body and a fresh air module according to any one of claims 1 to 9 for introducing outdoor air into the air conditioning body.