Fresh air device and air conditioner

Abstract

The application provides a fresh air device and an air conditioner. The fresh air device comprises a shell and a fan, an air inlet cavity is formed in the shell, a first air inlet communicating with the air inlet cavity is arranged on the shell, and the fan is arranged in the air inlet cavity. A flow guide member is arranged between the fan and the first air inlet, the flow guide member extends along the air inlet direction of the first air inlet and branches into a first flow guide part and a second flow guide part, and the first flow guide part and the second flow guide part are both arc structures. When the fresh air flow enters the air inlet cavity from the first air inlet, the fresh air flow is divided into two air flows through the flow guide of the arc structures of the first flow guide part and the second flow guide part, the buffer and orderly pressure expansion of the fresh air flow can be realized, the air flow entering the fan is more uniform, the turbulence of the air flow at the air inlet of the fan is reduced, the stability of the air outlet of the fan is improved, and the user experience is improved.

Description

Technical Field

[0001] This application belongs to the field of air conditioning technology, and in particular relates to a fresh air device and an air conditioner. Background Technology

[0002] With the development of air conditioning technology, some air conditioners, in addition to their traditional cooling and heating functions, have added fresh air devices to meet user needs and achieve fresh air function. The function of the fresh air device is to introduce outdoor air into the air intake chamber through fresh air ducts, and then send it out through the centrifugal force of a centrifugal fan to improve air quality.

[0003] However, existing fresh air systems suffer from turbulent airflow at the fan inlet, which reduces the stability of the fan's output air and thus affects the user experience. Utility Model Content

[0004] This application provides a fresh air device and an air conditioner to solve the problem of turbulent airflow at the fan inlet of existing fresh air devices.

[0005] In a first aspect, embodiments of this application provide a fresh air device, the fresh air device including a housing and a fan, an air inlet cavity formed inside the housing, a first air inlet communicating with the air inlet cavity on the housing, and the fan disposed in the air inlet cavity; a guide member is provided between the fan and the first air inlet, the guide member extends along the air inlet direction of the first air inlet and branches into a first guide portion and a second guide portion, both the first guide portion and the second guide portion being arc-shaped structures.

[0006] Optionally, the end of the first guide section near the first air inlet is connected to the end of the second guide section near the first air inlet, and the other ends of the first guide section and the other ends of the second guide section are bent in opposite directions.

[0007] Optionally, the connection point between the first guide section and the second guide section is located on the central axis of the first air inlet.

[0008] Optionally, the fresh air device further includes a U-shaped filter, which is disposed in the air inlet cavity and surrounds the fan. The opening of the U-shaped filter is away from the first air inlet, and the air guide is disposed between the U-shaped filter and the first air inlet.

[0009] Optionally, the shortest distance between the U-shaped filter and the center of the first air inlet is D, and the shortest distance between the guide and the center of the first air inlet is H, where 1 / 2D≤H≤2 / 3D.

[0010] Optionally, the housing is provided with a U-shaped opening for inserting the U-shaped filter into the air inlet cavity. One of the U-shaped filter and the inner wall of the air inlet cavity is provided with a limiting groove and the other is provided with a limiting protrusion. The limiting protrusion slides in conjunction with the limiting groove.

[0011] Optionally, the axial direction of the fan is parallel to the height direction of the housing. The housing includes a top wall, a bottom wall, and a side wall. The top wall and the bottom wall are arranged opposite each other in the height direction of the housing. The top wall, the bottom wall, and the side wall form the air inlet cavity. The U-shaped opening is formed on the top wall or the side wall.

[0012] Optionally, the fan includes a volute and an impeller, the impeller being disposed inside the volute, and the volute having two second air inlets located at opposite axial ends of the impeller.

[0013] Optionally, the fresh air device further includes a fresh air duct, one end of which is connected to the first air inlet.

[0014] Secondly, embodiments of this application also provide an air conditioner, which includes the aforementioned fresh air device.

[0015] The fresh air device and air conditioner provided in this application embodiment, by setting a guide component between the fan and the first air inlet of the housing, and extending the guide component along the air intake direction of the first air inlet to branch into a first guide section and a second guide section, both of which are arc-shaped structures, when the fresh airflow enters the air intake cavity from the first air inlet, it is guided by the first and second guide sections of the arc-shaped structure, and the fresh airflow is split into two airflows. This can achieve buffered and orderly diffusion of the fresh airflow, making the airflow entering the fan more uniform, thereby reducing the turbulence of the airflow at the fan inlet, improving the airflow stability of the fan, and thus enhancing the user experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. Those skilled in the art can obtain other drawings based on these drawings without creative effort. In the following description, the same reference numerals denote the same parts.

[0017] Figure 1 This is a first exploded structural diagram of the fresh air device provided in the embodiments of this application.

[0018] Figure 2 for Figure 1 The first cross-sectional schematic diagram of the fresh air system shown.

[0019] Figure 3 for Figure 2 The diagram shows a partial structure of the first type of fresh air device.

[0020] Figure 4 for Figure 2 The diagram shows a second partial structure of the fresh air system.

[0021] Figure 5 for Figure 1 The second cross-sectional schematic diagram of the fresh air device shown.

[0022] Figure 6 This is a second exploded structural diagram of the fresh air device provided in the embodiments of this application.

[0023] Figure 7 for Figure 6 A schematic diagram of the fresh air system from another perspective.

[0024] Figure 8 This is a schematic diagram of the structure of the housing provided in an embodiment of this application.

[0025] Figure 9 This is a schematic diagram of the structure of the U-shaped filter provided in the embodiments of this application.

[0026] Figure 10 for Figure 9 A schematic diagram of the structure of the U-shaped filter from another perspective.

[0027] Explanation of icon numbers:

[0028] 100. Housing; 101. Air inlet cavity; 102. First air inlet; 103. U-shaped opening; 110. Top wall; 120. Bottom wall; 130. Side wall; 200. Fan; 210. Volute; 211. Second air inlet; 220. Impeller; 230. Motor; 300. Air guide; 310. First air guide section; 320. Second air guide section; 400. U-shaped filter; 500. Fresh air duct. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] This application provides a fresh air device, such as... Figures 1-10 As shown, the fresh air device includes a housing 100 and a fan 200. An air inlet cavity 101 is formed inside the housing 100. A first air inlet 102 communicating with the air inlet cavity 101 is provided on the housing 100. The fan 200 is disposed in the air inlet cavity 101. A guide member 300 is provided between the fan 200 and the first air inlet 102. The guide member 300 extends along the air inlet direction of the first air inlet 102 and branches into a first guide section 310 and a second guide section 320. Both the first guide section 310 and the second guide section 320 are arc-shaped structures.

[0033] The fresh air device provided in this application embodiment provides a guide member 300 between the fan 200 and the first air inlet 102 of the housing 100. The guide member 300 extends and branches along the air intake direction of the first air inlet 102 into a first guide section 310 and a second guide section 320. Both the first guide section 310 and the second guide section 320 are arc-shaped structures. Thus, when the fresh airflow enters the air intake cavity 101 from the first air inlet 102, it is guided by the arc-shaped first guide section 310 and the second guide section 320, and the fresh airflow is divided into two airflows. This can achieve buffered and orderly diffusion of the fresh airflow, making the airflow entering the fan 200 more uniform. This reduces the turbulence of the airflow at the air inlet of the fan 200, improves the air outlet stability of the fan 200, and thus enhances the user experience and optimizes the operating efficiency of the fresh air device.

[0034] In some embodiments of this application, one end of the first guide section 310 near the first air inlet 102 is connected to the end of the second guide section 320 near the first air inlet 102, and the other ends of the first guide section 310 and the second guide section 320 are bent in opposite directions. This arrangement better divides the fresh airflow into two streams, making the airflow entering the fan 200 more uniform, thereby reducing turbulence in the airflow at the fan 200 inlet, improving the airflow stability of the fan 200, and ultimately enhancing the user experience.

[0035] Optionally, the connection point between the first guide section 310 and the second guide section 320 is located on the central axis of the first air inlet 102. This arrangement allows for better guidance of the split fresh airflow to both sides of the air inlet cavity 101, resulting in a more uniform airflow into the fan 200, thereby reducing turbulence in the airflow at the fan 200's inlet and improving the airflow stability of the fan 200. For example, as... Figure 2 and Figure 3 As shown, the first guide section 310 and the second guide section 320 are connected to form a "human" shaped guide structure, and the connection point between the first guide section 310 and the second guide section 320 is located on the central axis of the first air inlet 102.

[0036] In some embodiments of this application, the fresh air device further includes a U-shaped filter 400, which is disposed in the air inlet cavity 101 and surrounds the fan 200. The opening of the U-shaped filter 400 faces away from the first air inlet 102, and a guide member 300 is disposed between the U-shaped filter 400 and the first air inlet 102. By setting the U-shaped filter 400 to filter the fresh air flow, the quality of the fresh air is improved.

[0037] Understandably, the U-shaped filter 400 has filtration functions on both sides, enabling bidirectional filtration of particulate matter in the fresh airflow, thereby effectively improving filtration efficiency and significantly enhancing the purification efficiency of the fresh airflow. Furthermore, the U-shaped filter 400 increases the adsorption area, avoiding the wear and tear caused by one-sided filter operation and extending its service life. In addition, the U-shaped structure design of the U-shaped filter 400 makes installation and removal easier, allowing users to replace and maintain the filter more quickly, greatly improving maintenance convenience. Moreover, the U-shaped filter 400 is highly adaptable, suitable not only for fresh air systems but also for other types of air purification equipment, demonstrating broad applicability.

[0038] Optionally, the U-shaped filter 40 uses a high-efficiency filter material, such as HEAP material or composite material. High-efficiency filter materials have excellent filtration capabilities and can effectively intercept fine particles and pollutants in the air. For example, the U-shaped filter 40 can be a HEAP mesh, activated carbon filter, or electrostatic precipitator filter, etc., without further limitation.

[0039] It's important to understand that the specific dimensions, thickness, and filter material of the U-shaped filter 400 can be adjusted according to different models of fresh air systems. For example, for fresh air systems with high airflow, a larger filter and more efficient filter material can be used to improve filtration efficiency.

[0040] Optional, combined Figure 2 and Figure 3 As shown, the shortest distance between the U-shaped filter 400 and the center of the first air inlet 102 is D, and the shortest distance between the guide 300 and the center of the first air inlet 102 is H, where 1 / 2D ≤ H ≤ 2 / 3D, meaning H is greater than or equal to one-half of D and less than or equal to two-thirds of D. This configuration ensures that the fresh airflow does not experience significant impact separation loss after entering the air inlet cavity 101 from the first air inlet 102. It also effectively ensures that the fresh airflow achieves buffered and orderly diffusion, making the airflow entering the fan 200 more uniform, reducing turbulence in the airflow at the fan 200's inlet, and improving the airflow stability of the fan 200.

[0041] In some embodiments of this application, such as Figures 6-8 As shown, the housing 100 is provided with a U-shaped opening 103 for inserting a U-shaped filter 400 into the air inlet cavity 101. One of the U-shaped filter 400 and the inner wall of the air inlet cavity 101 is provided with a limiting groove, and the other with a limiting protrusion. The limiting protrusion slides in conjunction with the limiting groove. By providing the U-shaped opening 103 on the housing 100, the installation and replacement of the U-shaped filter 400 are facilitated. The sliding engagement between the U-shaped filter 400 and the inner wall of the air inlet cavity 101 via the limiting protrusion and limiting groove allows the user to slide and remove the filter, facilitating filter maintenance or cleaning and replacement, while ensuring the stability of the U-shaped filter 400 during insertion and removal.

[0042] Optionally, the U-shaped filter 400 may have a limiting groove, and the inner wall of the air inlet cavity 101 may have a limiting protrusion, with the limiting protrusion on the inner wall of the air inlet cavity 101 slidingly engaging with the limiting groove on the U-shaped filter 400; or, the inner wall of the air inlet cavity 101 may have a limiting groove, and the U-shaped filter 400 may have a limiting protrusion, with the limiting protrusion on the U-shaped filter 400 slidingly engaging with the limiting groove on the inner wall of the air inlet cavity 101.

[0043] Optionally, the axial direction of the fan 200 is parallel to the height direction of the housing 100. The housing 100 includes a top wall 110, a bottom wall 120, and a side wall 130. The top wall 110 and the bottom wall 120 are arranged opposite each other in the height direction of the housing 100. The top wall 110, the bottom wall 120, and the side wall 130 form an air inlet cavity 101. A U-shaped opening 103 is formed on the top wall 110 or the side wall 130. That is, the U-shaped filter 400 can be inserted from the axial direction of the fan 200 (e.g., ...). Figure 5 and Figure 8 As shown), it can also be inserted from the radial direction of the fan 200 (e.g. Figure 6 and Figure 7 As shown in the figure, this allows for flexible and diverse installation methods for the U-shaped filter 400.

[0044] In some embodiments of this application, the fan 200 includes a volute 210 and an impeller 220. The impeller 220 is disposed within the volute 210, and the volute 210 is provided with two second air inlets 211, which are respectively located at both axial ends of the impeller 220. By providing two second air inlets 211 on the volute 210, fresh air can be drawn in from both sides of the volute 210, achieving a dual-suction fresh air design. This effectively improves the air intake efficiency of the fan 200, thereby enhancing the overall performance of the fan 200.

[0045] Specifically, the volute 210 includes two sub-volutes, which enclose an air duct with an air outlet, and the impeller 220 is disposed within the air duct; one second air inlet 211 is disposed on one of the sub-volutes, and the other second air inlet 211 is disposed on the other sub-volute.

[0046] Optional, such as Figure 1 As shown, the fan 200 also includes a motor 230, which is installed inside the volute 210. The motor shaft of the motor 230 is connected to the impeller 220 and can drive the impeller 220 to rotate. When the impeller 220 rotates, it can drive the fresh airflow into the duct from the two second air inlets 211, and can deliver the fresh airflow from the duct to the air outlet, so that the fresh airflow is blown out from the air outlet.

[0047] Optional, such as Figures 1 to 7 As shown, the fresh air system also includes a fresh air duct 500. One end of the fresh air duct 500 is connected to the first air inlet 102, and the other end extends to the outdoor side. The fresh air duct 500 is used to connect the outdoor space with the air inlet cavity 101, allowing fresh air from the outdoor space to enter the fan 200 through the first air inlet 102, the air inlet cavity 101, and the second air inlet 211. During the installation of the fresh air duct 500, it can be installed through the wall of the indoor space to connect the outdoor space and the air inlet cavity 101.

[0048] This application also provides an air conditioner, which includes a fresh air device, the specific structure of which is described in the above embodiments. Since this air conditioner employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0049] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0050] The fresh air device and air conditioner provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A fresh air device, characterized in that, The device includes a housing (100) and a fan (200). An air inlet cavity (101) is formed inside the housing (100). A first air inlet (102) communicating with the air inlet cavity (101) is provided on the housing (100). The fan (200) is disposed in the air inlet cavity (101). A guide member (300) is provided between the fan (200) and the first air inlet (102). The guide member (300) extends along the air inlet direction of the first air inlet (102) and branches into a first guide section (310) and a second guide section (320). Both the first guide section (310) and the second guide section (320) are arc-shaped structures.

2. The fresh air device according to claim 1, characterized in that, The first guide section (310) is connected to the first air inlet (102) at one end and the second guide section (320) is connected to the first air inlet (102) at one end, and the other end of the first guide section (310) and the other end of the second guide section (320) are bent in opposite directions.

3. The fresh air device according to claim 2, characterized in that, The connection point between the first air guide (310) and the second air guide (320) is located on the central axis of the first air inlet (102).

4. The fresh air device according to claim 1, characterized in that, The fresh air device also includes a U-shaped filter (400), which is disposed in the air inlet cavity (101) and surrounds the fan (200). The opening of the U-shaped filter (400) is away from the first air inlet (102), and the guide (300) is disposed between the U-shaped filter (400) and the first air inlet (102).

5. The fresh air device according to claim 4, characterized in that, The shortest distance between the U-shaped filter (400) and the center of the first air inlet (102) is D, and the shortest distance between the guide (300) and the center of the first air inlet (102) is H, where 1 / 2D≤H≤2 / 3D.

6. The fresh air device according to claim 4 or 5, characterized in that, The housing (100) is provided with a U-shaped opening (103) for inserting the U-shaped filter (400) into the air inlet cavity (101). One of the inner walls of the U-shaped filter (400) and the air inlet cavity (101) is provided with a limiting groove and the other is provided with a limiting protrusion. The limiting protrusion slides in conjunction with the limiting groove.

7. The fresh air device according to claim 6, characterized in that, The axial direction of the fan (200) is parallel to the height direction of the housing (100). The housing (100) includes a top wall (110), a bottom wall (120), and a side wall (130). The top wall (110) and the bottom wall (120) are arranged opposite each other in the height direction of the housing (100). The top wall (110), the bottom wall (120), and the side wall (130) form the air inlet cavity (101). The U-shaped opening (103) is opened on the top wall (110) or the side wall (130).

8. The fresh air device according to claim 1, characterized in that, The fan (200) includes a volute (210) and an impeller (220). The impeller (220) is disposed inside the volute (210). The volute (210) is provided with two second air inlets (211), which are located at the two axial ends of the impeller (220).

9. The fresh air device according to claim 1, characterized in that, The fresh air device also includes a fresh air duct (500), one end of which is connected to the first air inlet (102).

10. An air conditioner, characterized in that, The air conditioner includes the fresh air device as described in any one of claims 1 to 9.

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