Fan, and seat ventilation device

Abstract

Disclosed in the present invention are a fan and a seat ventilation device. The fan comprises a housing and a fan main body component axially arranged inside the housing, wherein the fan main body component comprises a first fan body and a second fan body, the first fan body and the second fan body being arranged symmetrically about a plane perpendicular to the axial direction; the housing is provided with a first air port corresponding to the first fan body and a second air port corresponding to the second fan body; the housing is configured to enable the mutually opposite ends of the first fan body and the second fan body to be in communication with each other, such that the first fan body operates to enable an airflow to enter from the second air port and flow out from the first air port, and the second fan body operates to enable the airflow to enter from the first air port and flow out from the second air port.

Description

Fans and seat ventilation devices Technical Field

[0001] This invention relates to the field of seat ventilation technology, and in particular to a fan and seat ventilation device. Background Technology

[0002] Seats in mobile vehicles are typically equipped with ventilation systems, such as those in automobiles. Existing ventilation systems generally include an air bag and a fan for blowing or drawing air into the air bag's interior. The air bag has vents on its front surface facing the seat. When the fan blows air into the air bag, the airflow passes through the vents and is directed towards the occupant, providing ventilation. When the fan draws air into the air bag, negative pressure causes airflow near the seat to pass over the occupant and then flow back into the air bag through the vents, providing another form of ventilation. In some high-end mobile vehicles, the ventilation system combines both ventilation methods and effects. Ventilation systems with these two methods and effects typically have two fans for blowing air into and drawing air into the air bag, respectively. However, using two fans inevitably increases the cost and installation space required for the ventilation system. Summary of the Invention

[0003] To address the aforementioned technical problems in the prior art, the present invention provides a fan and seat ventilation device.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A fan includes a housing and a fan body component axially arranged in the housing.

[0006] The fan body component includes a first fan body and a second fan body, wherein the first fan body and the second fan body are arranged symmetrically about a plane perpendicular to the axial direction;

[0007] The housing has a first air inlet corresponding to the first fan body and a second air inlet corresponding to the second fan body. The housing is configured such that the opposite ends of the first fan body and the second fan body are connected, so that: when the first fan body operates, airflow enters from the second air inlet and flows out from the first air inlet, and when the second fan body operates, airflow enters from the first air inlet and flows out from the second air inlet.

[0008] Preferably,

[0009] Both the first fan body and the second fan body are centrifugal fan bodies;

[0010] The housing has a sidewall located on the radial periphery of the fan body component, and a bottom wall and a top wall respectively opposite to the back end of the first fan body and the back end of the second fan body.

[0011] The first air inlet is formed on the side wall opposite to the axial position of the first fan body, and the second air inlet is formed on the side wall opposite to the axial position of the second fan body.

[0012] Preferably, a first air passage is formed by extending radially from the side wall opposite to the axial position of the first fan body, and the port of the first air passage serves as the first air inlet. A second air passage is formed by extending radially from the side wall opposite to the axial position of the second fan body, and the port of the second air passage serves as the second air inlet.

[0013] Preferably, the first air inlet extends circumferentially on the sidewall opposite to the axial position of the first fan body, and the second air inlet extends circumferentially on the sidewall opposite to the axial position of the second fan body.

[0014] Preferably, the housing further includes an annular wall between the top wall and the bottom wall, the annular wall being located inside the side wall, the annular wall having a central circular opening, and the opposite ends of the first fan body and the second fan body communicating through the central circular opening.

[0015] Preferably,

[0016] Both the first fan body and the second fan body are axial flow fan bodies;

[0017] The first air vent is formed on the housing opposite to the back end of the first fan body, and the second air vent is formed on the housing opposite to the back end of the second fan body.

[0018] The present invention also discloses a seat ventilation device, including an air bag having an inner cavity defined by a bag body, air holes being arranged on the bag body facing the seat, and the seat ventilation device further including the aforementioned fan, the first air outlet of the fan communicating with the inner cavity of the air bag.

[0019] Preferably, the air bag is provided with an air bag interface on the bag body opposite to the air hole, and the first air port of the fan communicates with the inner cavity of the air bag through the air bag interface.

[0020] Preferably, the inner cavity of the air bag is provided with a support member, and the support member has pores that allow airflow.

[0021] Compared with the prior art, the beneficial effects of the fan and seat ventilation device disclosed in this invention are:

[0022] This invention achieves both blowing and suction ventilation by configuring two coaxially and symmetrically arranged fan bodies in the fan housing of the ventilation device, thereby reducing the installation space occupied by the fan and reducing the cost of the fan to a certain extent.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit the invention.

[0024] The overview of various implementations or examples of the technology described in this invention is not a complete disclosure of the full scope or all features of the disclosed technology. Attached Figure Description

[0025] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to explain embodiments of the invention. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0026] Figure 1 is a three-dimensional structural diagram of the fan provided in an embodiment of the present invention (the fan body is a centrifugal fan body, and the air inlet is formed at the port of the air passage).

[0027] Figure 2 is a main sectional view of the ventilation device provided in an embodiment of the present invention (the ventilation device is in the state of blowing air into the air bag, the fan body is a centrifugal fan body, and the air inlet is formed at the port of the air passage).

[0028] Figure 3 is a main sectional view of the ventilation device provided in the embodiment of the present invention (the ventilation device is in the state of drawing air into the air bag, the fan body is a centrifugal fan body, and the air inlet is formed at the port of the air passage).

[0029] Figure 4 is a three-dimensional structural diagram of the fan provided in an embodiment of the present invention (the fan body is a centrifugal fan body, and the air inlet is formed on the side wall).

[0030] Figure 5 is a main sectional view of the ventilation device provided in the embodiment of the present invention (the ventilation device is in the state of blowing air into the air bag, the fan body is a centrifugal fan body, and the air inlet is formed on the side wall).

[0031] Figure 6 is a main sectional view of the ventilation device provided in the embodiment of the present invention (the ventilation device is in the state of drawing air into the air bag, the fan body is a centrifugal fan body, and the air inlet is formed on the side wall).

[0032] Figure 7 is a three-dimensional structural diagram of the fan provided in an embodiment of the present invention (the fan body is an axial flow fan body).

[0033] Figure 8 is a main sectional view of the ventilation device provided in the embodiment of the present invention (the ventilation device is in the state of blowing air into the air bag, and the fan body is an axial flow fan body).

[0034] Figure 9 is a main sectional view of the ventilation device provided in the embodiment of the present invention (the ventilation device is in the state of drawing air into the air bag, and the fan body is an axial flow fan body).

[0035] Reference numerals: 100-Fan; 10-Housing; 11-Top wall; 12-Bottom wall; 13-Side wall; 131-Lower side wall; 132-Upper side wall; 141-First air inlet; 142-Second air inlet; 151-First air passage; 152-Second air passage; 16-Annular wall; 20-Fan main body component; 21-First fan body; 22-Second fan body; 200-Air bag; 201-Bag body; 202-Air hole; 203-Inner cavity; 204-Support component. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0039] As shown in Figures 1 to 9, embodiments of the present invention disclose a fan 100 and a seat ventilation device including the fan 100. The ventilation device includes not only the fan 100 but also an air bag 200. The air bag 200 is formed by a bag body 201, thus creating an inner cavity 203. Air holes 202 are provided on the bag body 201 facing the seat, allowing airflow to flow out of the air bag 200 or enter the bag body 201 through the air holes 202. An air bag interface is provided on the bag body 201 opposite to the bag body 201 where the air holes 202 are located, extending into the inner cavity 203 of the air bag 200. The fan 100 communicates with the inner cavity 203 of the air bag 200 through the air bag interface, thereby enabling the fan 100 to supply airflow into or draw airflow from the air bag 200. Preferably, the air bag 200 is further provided with a support member 204 having numerous pores to maintain the inner cavity 203 of the air bag 200.

[0040] The fan 100 includes a housing 10 and a fan body component 20 disposed within the housing 10. The fan body component 20 includes a first fan body 21 and a second fan body 22. The first fan body 21 and the second fan body 22 are coaxially arranged and substantially located at the center of the housing 10. The first fan body 21 and the second fan body 22 are symmetrical about a plane perpendicular to the axial direction, and the opposite ends of the first fan body 21 and the second fan body 22 are air intake ends. A first air inlet 141 corresponding to the first fan body 21 is disposed on the housing 10. When the first fan body 21 is running, airflow enters from the opposite end of the first fan body 21 and flows out from the first air inlet 141. A second air inlet 142 corresponding to the second fan body 22 is disposed on the housing 10. When the second fan body 22 is running, airflow enters from the opposite end of the second fan body 22 and flows out from the second air inlet 142.

[0041] In the ventilation device, the first air inlet 141 of the fan 100 is connected to the inner cavity 203 of the air bag 200 through the air bag interface, and the second air inlet 142 is connected to the outside air. Thus, as shown in Figures 2, 5, and 8, if the ventilation device is required to provide ventilation to the occupant in a blowing manner, the first fan body 21 is controlled to operate and the second fan body 22 is controlled to stop operating. Outside airflow enters the housing 10 through the second air inlet 142. Subsequently, the airflow passes through the gaps between the blades of the second fan body 22 and flows out from the opposite end of the second fan body 22. Then, under the action of the first fan body 21, the airflow enters from the opposite end of the first fan body 21 and flows out from the first air inlet 141. The airflow flowing out from the first air inlet 141 is supplied to the inner cavity 203 of the air bag 200. Subsequently, the airflow passes through the air holes 202 of the bag body 201 and the internal passage of the seat, blowing from the front of the seat towards the occupant, thereby achieving a blowing ventilation effect; as shown in Figures 3, 6, and 9. As shown, if the ventilation device is required to ventilate the occupant by suction, the second fan body 22 is controlled to operate and the first fan body 21 is controlled to stop operating. The airflow in the inner cavity 203 of the air bag 200 enters the housing 10 through the first air port 141. Subsequently, the airflow flows out from the opposite end of the first fan body 21 through the gap between the blades of the first fan body 21. Then, under the action of the second fan body 22, the airflow enters from the opposite end of the second fan body 22 and flows out from the second air port 142 and is discharged into the outside air. At the same time, a negative pressure is formed inside the air bag 200, thereby forcing the air around the front side of the seat to form an airflow and enter the inner cavity 203 of the air bag 200 through the internal channel of the seat and the air hole 202 of the air bag 200 to achieve the ventilation effect of suction.

[0042] This invention provides two types of fans 100.

[0043] The first type of fan 100.

[0044] As shown in Figures 1 to 6, both the first fan body 21 and the second fan body 22 are centrifugal fan bodies 100. The housing 10 has a bottom wall 12 and a top wall 11 opposite to the back ends of the first fan body 21 and the second fan body 22, respectively; a side wall 13 located between the bottom wall 12 and the top wall 11 and on the radial periphery of the first fan body 21 and the second fan body 22; and an annular wall 16 located inside the side wall 13 and between the opposite ends of the first fan body 21 and the second fan body 22. The annular wall 16 has a central circular opening, which serves as a common port for the air intake ends of the first fan body 21 and the second fan body 22. The axial position of the side wall 13 of the housing 10 opposite to the first fan body 21 may be referred to as the lower side wall 131, and the axial position of the side wall 13 of the housing 10 opposite to the second fan body 22 may be referred to as the upper side wall 132. The first air vent 141 is formed on the lower sidewall 131, and the second air vent 142 is formed on the upper sidewall 132.

[0045] The assembly method of this type of fan 100 and air bag 200 is as follows: the bottom wall 12 and the lower side wall 131 of the housing 10 are inserted into the fan 100 through the air bag interface, so that the first air port 141 enters the air bag 200, and the second air port 142 is exposed outside the air bag 200 because it is located in the axial position of the upper side.

[0046] In this type of fan 100, the first air inlet 141 and the second air inlet 142 have two structural types. The first structural type, as shown in Figures 1 to 3, involves a first air passage 151 extending radially from the lower sidewall 131 and a second air passage 152 extending radially from the upper sidewall 132. The second air passage 152 is parallel to the first air passage 151 and arranged vertically. The port of the first air passage 151 forms the first air inlet 141, and the port of the second air passage 152 forms the second air inlet 142. The first air inlet 141 and the second air inlet 142 are flush. In this way, airflow enters or exits from the air inlet only from one direction. The second structural type, as shown in Figures 4 to 6, involves the first air inlet 141 extending circumferentially on the lower sidewall 131 and the second air inlet 142 extending circumferentially on the upper sidewall 132. In this way, airflow can enter or exit from the air inlet from various circumferential directions of the housing 10.

[0047] The second type of fan 100.

[0048] As shown in Figures 7 to 9, both the first fan body 21 and the second fan body 22 are axial flow fan bodies 100. The housing 10 has a cylindrical body that forms a cylindrical cavity. The first fan body 21 and the second fan body 22 are located in the cylindrical body. The port of the cylindrical body opposite to the back end of the first fan body 21 is the first air port 141, and the port of the cylindrical body opposite to the back end of the second fan body 22 is the second air port 142. This allows airflow to enter or exit axially from the air ports.

[0049] The assembly method of this type of fan 100 and air bag 200 is such that the first air port 141 of the housing 10 is connected to the air bag interface of the air bag 200, thereby preventing the bag body 201 of the air bag 200 opposite to the first air port 141 from blocking the first air port 141.

[0050] Furthermore, although exemplary embodiments have been described in this invention, their scope includes any and all embodiments based on the invention that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the full scope of the following claims and their equivalents.

[0051] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments can be used by those skilled in the art when reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the invention. This should not be construed as an intention that a disclosed feature, which is not claimed, is necessary for any claim. Rather, the subject matter of the invention may be less than all the features of the particular disclosed embodiments. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is independently considered as a separate embodiment, and these embodiments are contemplated as being able to be combined with each other in various combinations or arrangements. The scope of the invention should be determined by reference to the appended claims and the full scope of their equivalents.

[0052] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A fan, comprising a housing and a fan body component axially arranged in the housing, characterized in that, The main fan component includes a first fan body and a second fan body; The housing has a first air inlet corresponding to the first fan body and a second air inlet corresponding to the second fan body. The housing is configured such that the opposite ends of the first fan body and the second fan body are connected, so that: when the first fan body operates, airflow enters from the second air inlet and flows out from the first air inlet, and when the second fan body operates, airflow enters from the first air inlet and flows out from the second air inlet.

2. The fan according to claim 1, characterized in that, Both the first fan body and the second fan body are centrifugal fan bodies; The housing has a sidewall located on the radial periphery of the fan body component, and a bottom wall and a top wall respectively opposite to the back end of the first fan body and the back end of the second fan body. The first air inlet is formed on the side wall opposite to the axial position of the first fan body, and the second air inlet is formed on the side wall opposite to the axial position of the second fan body.

3. The fan according to claim 2, characterized in that, A first air passage is formed by extending radially from the side wall opposite to the axial position of the first fan body, and the port of the first air passage serves as the first air inlet. A second air passage is formed by extending radially from the side wall opposite to the axial position of the second fan body, and the port of the second air passage serves as the second air inlet.

4. The fan according to claim 2, characterized in that, The first air inlet extends circumferentially on the sidewall opposite to the axial position of the first fan body, and the second air inlet extends circumferentially on the sidewall opposite to the axial position of the second fan body.

5. The fan according to claim 2, characterized in that, The housing also includes an annular wall between the top wall and the bottom wall, the annular wall being located inside the side wall, the annular wall having a central circular opening, and the opposite ends of the first fan body and the second fan body being connected through the central circular opening.

6. The fan according to claim 1, characterized in that, Both the first fan body and the second fan body are axial flow fan bodies; The first air vent is formed on the housing opposite to the back end of the first fan body, and the second air vent is formed on the housing opposite to the back end of the second fan body.

7. The fan according to any one of claims 1 to 6, characterized in that, The first fan body and the second fan body are arranged symmetrically about a plane perpendicular to the axial direction.

8. The fan according to any one of claims 1 to 7, characterized in that, The first fan body and the second fan body are arranged coaxially.

9. A seat ventilation device comprising an air bag having an inner cavity defined by a bag body, wherein air holes are arranged on the bag body facing the seat, characterized in that, The seat ventilation device further includes a fan as described in any one of claims 1 to 8, wherein a first air inlet of the fan is in communication with the inner cavity of the air bag.

10. The seat ventilation device according to claim 9, characterized in that, The air bag is provided with an air bag interface on the bag body opposite to the air hole, and the first air port of the fan communicates with the inner cavity of the air bag through the air bag interface.

11. The seat ventilation device according to claim 9, characterized in that, The inner cavity of the air bag is provided with a support component, which has pores that allow airflow.

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