Air duct structure, fresh air module and air conditioner

Abstract

The embodiment of the invention provides an air duct structure, a fresh air module and an air conditioner, the air duct structure is provided with a first air duct and an air inducing opening, the first air duct is provided with a first air inlet part, a first fan cavity and a first air outlet part which are sequentially communicated, and the first air outlet part and the plane where the first fan cavity is located are vertically or obliquely arranged; the air inducing opening is formed in the side wall of the first air duct and located in the area, connected with the first fan cavity and the first air outlet part, of the side wall, and the air inducing opening is used for forming blocking airflow flowing towards an outlet of the first air outlet part at the connecting part of the first fan cavity and the first air outlet part. And the blocking airflow flows to the first air outlet part along the side wall of the first air duct.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to an air duct structure, a fresh air module and an air conditioner. Background Art

[0002] Fresh air air conditioner is an air conditioner with fresh air function, which can keep indoor air fresh. In the related art, the fresh air air conditioner has a small air intake and a large noise, which cannot meet the user's needs. Summary of the invention

[0003] The embodiments of the present application provide an air duct structure, a fresh air module and an air conditioner, which can increase the fresh air intake volume and reduce the air duct noise, thereby better meeting the user's usage needs.

[0004] On the one hand, an embodiment of the present application provides an air duct structure, provided with a first air duct and an air duct, the first air duct having a first air inlet, a first fan cavity and a first air outlet which are connected in sequence, and the first air outlet and the first fan cavity are arranged vertically or inclined in the plane where the first air outlet and the first fan cavity are located; the air duct is opened on the side wall of the first air duct, and is located in the area on the side wall connecting the first fan cavity and the first air outlet, and the air duct is used to form a blocking airflow flowing toward the outlet of the first air outlet at the connecting part of the first fan cavity and the first air outlet, and the blocking airflow flows along the side wall of the first air duct to the first air outlet.

[0005] In some embodiments, the air duct structure is further provided with a second air duct, and the first air duct and the second air duct are arranged adjacent to each other and are connected through the air duct.

[0006] In some embodiments, the air duct structure includes a first air duct shell and a second air duct shell connected to each other, the first air duct is formed in the first air duct shell, and the second air duct is formed in the second air duct shell; the second air duct shell is connected to the area of ​​the first air duct shell connecting the first fan cavity and the first air outlet, and the air inlet passes through the connection between the first air duct shell and the second air duct shell to connect the first air duct and the second air duct.

[0007] In some embodiments, the second air duct has a second air inlet, a second fan cavity and a second air outlet which are connected in sequence, and an end of the air inlet away from the first air duct is opened on the side wall of the second air duct, and the second air outlet and the second fan cavity are arranged vertically or inclined on the plane where the second air outlet and the second fan cavity are located.

[0008] In some embodiments, the flow cross-sectional area of ​​the first air outlet portion increases along the air outlet direction.

[0009] In some embodiments, the first air duct has a turning section connecting the first fan cavity and the first air outlet, the turning section has an inner wall and an outer wall arranged opposite to each other, and the air inlet is opened on at least one of the inner wall and the outer wall.

[0010] In some embodiments, the first air inlet is connected to the central portion of the first fan cavity, and an extension direction of the first air inlet coincides with a central axis of the first fan cavity; and the first air outlet is connected to an edge portion of the first fan cavity.

[0011] In a second aspect, an embodiment of the present application provides a fresh air module, comprising the air duct structure and the fresh air fan described in any of the above embodiments, wherein the fresh air fan is disposed in the first fan cavity.

[0012] In some embodiments, the fresh air module also includes a second air duct and an exhaust fan, the first air duct and the second air duct are adjacent to each other and connected through the air duct, and the exhaust fan is arranged in the second air duct; when the fresh air fan and the exhaust fan are both kept turned on, the air pressure at one end of the air duct connected to the first air duct is lower than the air pressure at one end of the air duct connected to the second air duct, so as to form the blocking airflow.

[0013] In a third aspect, an embodiment of the present application provides an air conditioner, comprising the air duct structure described in any one of the above embodiments or the fresh air module described in any one of the above embodiments.

[0014] The embodiment of the present application opens an air vent in the area connecting the first fan chamber and the first air outlet on the side wall of the first air duct, so that a blocking airflow can be introduced through the air vent. The blocking airflow is utilized to prevent the outlet airflow of the first fan chamber from flowing back at the turning point, and to reduce the area in which the outlet airflow of the first fan chamber separates at the turning point, thereby improving the blockage problem of the outlet area of ​​the first fan chamber and the connection part between the first fan chamber and the first air outlet, thereby reducing the obstruction and noise generated when the airflow turns. When the air duct structure is used to introduce fresh air, the fresh air intake volume can be effectively increased and the air duct noise can be reduced, thereby better meeting the user's usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a projection structure diagram of a fresh air module provided in some embodiments of the present application;

[0017] Figure 2 It is a projection structure diagram of the fresh air module provided in some embodiments of the present application in a use state;

[0018] Figure 3 is another projection structure diagram of the fresh air module provided in some embodiments of the present application;

[0019] Figure 4 This is another projection structure diagram of the fresh air module provided in some embodiments of the present application when in use.

[0020] Description of main component symbols:

[0021] 1-air duct structure, 10-first air duct shell, 11-first air duct, 111-first air inlet, 112-first fan cavity, 113-first air outlet, 114-turning section, 1141-inner wall, 1142-outer wall, 20-air inlet, 30-second air duct shell, 31-second air duct, 311-second air inlet, 312-second fan cavity, 313-second air outlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0025] The use of "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values ​​can be based on additional conditions or values ​​beyond the stated values ​​in practice.

[0026] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0027] like Figure 1 and Figure 2 As shown, on the one hand, an embodiment of the present application provides an air duct structure 1, which is provided with a first air duct 11 and an air inlet 20, which can increase the fresh air intake volume and reduce the air duct noise, and better meet the user's usage needs.

[0028] The first air duct 11 has a first air inlet 111, a first fan cavity 112 and a first air outlet 113 which are connected in sequence. The first fan cavity 112 is used to install a fan to provide the pressure required to drive the airflow in the first air duct 11 to flow in a directional manner. The type of the fan can be determined according to actual needs, and can be, for example, a centrifugal fan, a cross-flow fan, etc., which is not limited in the embodiments of the present application; in some embodiments, the fan can be a centrifugal fan.

[0029] When the first air duct 11 is a fresh air duct, the first air inlet 111 can be directly connected to the outdoor air environment, or indirectly connected to the outdoor air environment through a fresh air duct, and the first air outlet 113 can be directly connected to the indoor environment, or indirectly connected to the indoor environment through an indoor air outlet on the air conditioner, and the first fan chamber 112 can be used to install a fresh air fan to introduce outdoor fresh air into the indoor environment.

[0030] The first air outlet 113 and the first fan chamber 112 are arranged vertically or obliquely on the plane to meet the space layout requirements. For example, the air duct structure 1 can be made more compact and easy to layout. Due to the above-mentioned vertical or inclined arrangement, when the airflow in the first air duct 11 flows from the first fan cavity 112 to the first air outlet 113, the airflow will be turned to a large extent at the connection between the first fan cavity 112 and the first air outlet 113, causing part of the airflow to flow back into the first fan cavity 112 and block the air outlet area of ​​the first fan cavity 112, thereby hindering the air outlet of the first fan cavity 112, while part of the airflow will contact the side wall of the air duct at the turning point and be separated into multiple sub-fluids flowing in different directions under the Coanda effect. The multiple sub-fluids are likely to hinder each other and block the connection between the first fan cavity 112 and the first air outlet 113, hindering the air outlet of the first fan cavity 112 and even the first air outlet 113; since the outlet airflow encounters a large obstruction at the connection between the first fan cavity 112 and the first air outlet 113, a large noise will be generated at the turning point, resulting in a significant decrease in the comfort of use.

[0031] The air vent 20 is provided on the side wall of the first air duct 11, and is located in the area on the side wall connecting the first fan chamber 112 and the first air outlet 113; that is, the air vent 20 is provided at the turning point of the first air duct 11, and the turning point is also the turning point of the outlet airflow of the first fan chamber 112. The number of the air vents 20 can be determined according to actual needs, and can be one or more, which is not limited in the embodiments of the present application. The air vent 20 is used to introduce a blocking airflow at the connection between the first fan chamber 112 and the first air outlet 113. The blocking airflow can flow along the side wall of the first air duct 11 to the first air outlet 113, so as to prevent the outlet airflow of the first fan chamber 112 from flowing back and prevent the outlet airflow from contacting the side wall of the first air duct 11 where the air vent 20 is provided.

[0032] In this way, when the first fan chamber 112 discharges air and flows to the first air outlet 113, the air duct 20 can introduce a blocking airflow at the connection portion between the first fan chamber 112 and the first air outlet 113. On the one hand, the blocking airflow is used to prevent the outlet airflow of the first fan chamber 112 from flowing back into the first fan chamber 112, thereby avoiding blocking the outlet area of ​​the first fan chamber 112 due to the backflow of the outlet airflow, thereby ensuring the normal air outlet of the first fan chamber 112 and the free turning of the outlet airflow. On the other hand, the blocking airflow is used to prevent the outlet airflow of the first fan chamber 112 from contacting the side wall of the first air duct 11 provided with the air duct 20 at the turning point, thereby at least preventing the outlet airflow of the first fan chamber 112 from separating due to the Coanda effect on the side of the turning point where the air duct 20 is provided, thereby reducing the area and energy loss where the outlet airflow separates at the turning point, as well as the obstruction and blockage caused by airflow separation. Compared with the related art, the air duct structure 1 provided in the embodiment of the present application can prevent the outlet airflow of the first fan chamber 112 from flowing back at the turning point, and reduce the area where the outlet airflow of the first fan chamber 112 separates at the turning point, thereby improving the blockage problem of the outlet area of ​​the first fan chamber 112 and the connection between the first fan chamber 112 and the first air outlet 113, thereby reducing the obstruction and noise generated when the airflow turns; when the air duct structure 1 is used to introduce fresh air, it can effectively increase the fresh air intake volume and reduce the air duct noise, thereby better meeting the user's needs.

[0033] In some embodiments, the air duct structure 1 may further be provided with a second air duct 31, and the first air duct 11 and the second air duct 31 are arranged adjacent to each other and are connected through the air inlet 20. Here, when the first air duct 11 is used to take in air, the air pressure at one end of the air inlet 20 connected to the first air duct 11 is lower than the air pressure at one end of the air inlet 20 connected to the second air duct 31; in this way, the air inlet 20 may be used to introduce the airflow in the second air duct 31 into the first air duct 11 and form a blocking airflow in the first air duct 11. In some examples, the first air duct 11 may be used as a fresh air duct for introducing fresh air, and the second air duct 31 may be used as an exhaust air duct for exhausting indoor dirty air.

[0034] In some examples, the air duct structure 1 may include a first air duct shell 10 and a second air duct shell 30 connected to each other. The first air duct 11 is formed in the first air duct shell 10, and the second air duct 31 is formed in the second air duct shell 30. The second air duct shell 30 is connected to the area of ​​the first air duct shell 10 connecting the first fan cavity 112 and the first air outlet 113, and the air inlet 20 passes through the connection between the first air duct shell 10 and the second air duct shell 30 to connect the first air duct 11 and the second air duct 31. In this way, the connection between the first air duct shell 10 and the second air duct shell 30 and the connection between the first fan cavity 112 and the first air outlet 113 are located in the same area, so that the air inlet 20 is easy to introduce the blocking airflow from the second air duct 31 to the first air duct 11.

[0035] In some examples, the second air duct 31 may have a second air inlet 311, a second fan cavity 312, and a second air outlet 313 that are connected in sequence. The second fan cavity 312 can be used to install a fan to provide the pressure required to drive the directional flow of the airflow in the second air duct 31. The type of fan can be determined according to actual needs, and can be, for example, a centrifugal fan, a cross-flow fan, etc., which is not limited in the embodiments of the present application; illustratively, the fan can be a centrifugal fan. The end of the air duct 20 away from the first air duct 11 is opened on the side wall of the second air duct 31, and the second air outlet 313 and the second fan cavity 312 are arranged vertically or obliquely on the plane, so that the second air duct 31 has a more compact and compact structure. Here, the fans in the first fan chamber 112 and the second fan chamber 312 can be controlled to keep started respectively, so as to form a pressure difference between the pressure differences at both ends of the air inlet 20, thereby forcing the relatively high-pressure airflow in the second air duct 31 to flow into the first air duct 11 through the air inlet 20, so as to form a blocking airflow with a certain pressure at the turning point of the first air duct 11, thereby achieving the above-mentioned anti-blocking effect. Exemplarily, the first fan chamber 112 and the second fan chamber 312 can be arranged in parallel, so that the air duct structure 1 is more compact.

[0036] The shape of the first air outlet 113 can be determined according to actual needs, and the embodiment of the present application does not limit this. In some embodiments, the flow cross-sectional area of ​​the first air outlet 113 can increase along the air outlet direction. In this way, the first air outlet 113 has a gradually expanding structure along the air outlet direction, which reduces the air outlet speed of the first air outlet 113, making the air outlet softer and more comfortable.

[0037] like Figures 1 to 4 As shown, in some embodiments, the first air duct 11 may have a turning section 114 connecting the first fan chamber 112 and the first air outlet 113. The turning section 114 may have an inner side wall 1141 and an outer side wall 1142 arranged opposite to each other, and the air inlet 20 may be opened on the inner side wall 1141 and the outer side wall 1142. Here, the inner side wall 1141 may be closer to the turning center of the turning section 114, and the outer side wall 1142 is located on the side of the inner side wall 1141 away from the turning center.

[0038] In some examples, the air inlet 20 may be provided only on the inner wall 1141, but not on the outer wall 1142. In this way, the blocking airflow introduced from the air inlet 20 may be used to press the outlet airflow of the first fan chamber 112 toward the outer wall 1142, preventing the outlet airflow from contacting the inner wall 1141 and allowing the outlet airflow to contact the outer wall 1142, thereby reducing the area and energy loss of the outlet airflow separation at the turning point, and reducing the obstruction and blockage caused by airflow separation.

[0039] like Figure 1and Figure 2 As shown, in other examples, the air inlet 20 may be provided only on the outer wall 1142, but not on the inner wall 1141. In this way, the blocking airflow introduced from the air inlet 20 may be used to press the outlet airflow of the first fan chamber 112 toward the inner wall 1141, preventing the outlet airflow from contacting the outer wall 1142 with a larger area, and selecting to contact the outlet airflow with the inner wall 1141 with a smaller area, thereby greatly reducing the area and energy loss of the outlet airflow separation at the turning point, and greatly reducing the obstruction and blockage caused by airflow separation.

[0040] like Figure 3 and Figure 4 As shown, in some other examples, air inlet 20 can be respectively provided on the inner wall 1141 and the outer wall 1142. In this way, a blocking airflow can be introduced from both sides of the turning section 114, and the blocking airflow is used to prevent the outlet airflow of the first fan chamber 112 from contacting the inner wall 1141 and the outer wall 1142, so that the outlet airflow does not contact most or even all of the side walls of the turning section 114, thereby preventing the outlet airflow of the first fan chamber 112 from being separated at the turning point due to the Coanda effect to a greater extent or even completely, thereby avoiding the obstruction and blockage caused by airflow separation.

[0041] The connection structure between the first air inlet 111 and the first fan chamber 112 can be determined according to actual needs, and the embodiment of the present application does not limit this. Figures 1 to 4 As shown, in some embodiments, the first air inlet 111 can be connected to the center of the first fan cavity 112, and the extension direction of the first air inlet 111 coincides with the central axis of the first fan cavity 112, and the first air outlet 113 can be connected to the edge of the first fan cavity 112. Here, the first fan cavity 112 can be used to install a centrifugal fan, so that the airflow can flow into the center of the centrifugal fan through the first air inlet 111, and then flow to the first air outlet 113 through the edge of the centrifugal fan. Through the above arrangement, the structure of the air duct structure 1 can be made relatively small and compact.

[0042] In the second aspect, the embodiment of the present application provides a fresh air module, which includes the air duct structure 1 and the fresh air fan of any of the above embodiments, and the fresh air fan is arranged in the first fan chamber 112. When fresh air needs to be introduced, the fresh air fan can be turned on to suck outdoor fresh air from the first air inlet 111 into the first air duct 11, and then discharge the outdoor fresh air into the indoor environment through the first air outlet 113. The fresh air module has the above-mentioned air duct structure 1, which can increase the fresh air intake volume and reduce the air duct noise, and better meet the user's use needs.

[0043] In some embodiments, the fresh air module may further include a second air duct 31 and an exhaust fan, the first air duct 11 and the second air duct 31 are arranged adjacent to each other and are connected through the air inlet 20, and the exhaust fan is arranged in the second air duct 31. Here, the first air duct 11 may be a fresh air duct for introducing fresh air, and the second air duct 31 may be an exhaust air duct for exhausting indoor polluted air, so that the fresh air module can realize a two-way fresh air function of inhaling outdoor fresh air and exhausting indoor polluted air.

[0044] Here, when both the fresh air fan and the exhaust fan are turned on, the fresh air module can realize the two-way fresh air function; at this time, the air pressure at one end of the air inlet 20 connected to the first air duct 11 can be set to be lower than the air pressure at one end of the air inlet 20 connected to the second air duct 31, so as to form the above-mentioned blocking airflow in the first air duct 11. Exemplarily, the pressure difference between the two ends of the air inlet 20 can be controlled by controlling the rotation speed of the fresh air fan and the exhaust fan, so that the airflow in the second air duct 31 can be introduced into the first air duct 11 through the air inlet 20.

[0045] The types of the fresh air fan and the exhaust fan can be determined according to actual needs, and can be, for example, a centrifugal fan, a crossflow fan, etc., which is not limited in the embodiments of the present application. In some embodiments, the fresh air fan and the exhaust fan can both be centrifugal fans.

[0046] In a third aspect, an embodiment of the present application provides an air conditioner, which includes the air duct structure 1 of any of the above embodiments or the fresh air module of any of the above embodiments. The type of air conditioner can be determined according to actual needs, and can be, for example, a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner, etc., which is not limited in the embodiment of the present application. The air conditioner has the above-mentioned air duct structure 1, which can increase the fresh air intake and reduce the air duct noise, and better meet the user's usage needs.

[0047] The air duct structure, fresh air module and air conditioner provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An air duct structure, characterized in that: A first air duct and an air inlet are provided, wherein the first air duct has a first air inlet, a first fan cavity and a first air outlet which are connected in sequence, and the first air outlet and the first fan cavity are arranged vertically or obliquely on the plane where the first air outlet and the first fan cavity are located; The air duct is opened on the side wall of the first air duct and is located in the area on the side wall connecting the first fan cavity and the first air outlet. The air duct is used to form a blocking airflow flowing toward the outlet of the first air outlet at the connecting part of the first fan cavity and the first air outlet, and the blocking airflow flows along the side wall of the first air duct to the first air outlet.

2. The air duct structure according to claim 1, characterized in that: The air duct structure is further provided with a second air duct, and the first air duct and the second air duct are arranged adjacent to each other and are connected through the air inlet.

3. The air duct structure according to claim 2, characterized in that: The air duct structure includes a first air duct shell and a second air duct shell connected to each other, the first air duct is formed in the first air duct shell, and the second air duct is formed in the second air duct shell; the second air duct shell is connected to the area of ​​the first air duct shell connecting the first fan cavity and the first air outlet, and the air inlet passes through the connecting part of the first air duct shell and the second air duct shell to connect the first air duct and the second air duct.

4. The air duct structure according to claim 2, characterized in that: The second air duct has a second air inlet, a second fan cavity and a second air outlet which are connected in sequence. An end of the air inlet away from the first air duct is opened on the side wall of the second air duct. The second air outlet and the plane where the second fan cavity are located are vertically or inclined.

5. The air duct structure according to claim 1, characterized in that: The flow cross-sectional area of ​​the first air outlet portion increases gradually along the air outlet direction.

6. The air duct structure according to any one of claims 1 to 5, characterized in that: The first air duct has a turning section connecting the first fan cavity and the first air outlet, the turning section has an inner wall and an outer wall arranged opposite to each other, and the air inlet is opened on at least one of the inner wall and the outer wall.

7. The air duct structure according to claim 1, characterized in that: The first air inlet is connected to the central part of the first fan cavity, and the extension direction of the first air inlet coincides with the central axis of the first fan cavity; the first air outlet is connected to the edge of the first fan cavity.

8. A fresh air module, characterized in that: It comprises the air duct structure and fresh air fan described in any one of claims 1 to 7, and the fresh air fan is arranged in the first fan cavity.

9. The fresh air module according to claim 8, characterized in that: The fresh air module also includes a second air duct and an exhaust fan, the first air duct and the second air duct are adjacent to each other and connected through the air duct, and the exhaust fan is arranged in the second air duct; when the fresh air fan and the exhaust fan are both kept turned on, the air pressure at one end of the air duct connected to the first air duct is lower than the air pressure at one end of the air duct connected to the second air duct, so as to form the blocking airflow.

10. An air conditioner, characterized in that: Includes the fresh air module described in claim 8 or 9.

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