Fan and seat ventilation device

Abstract

The invention discloses a fan and a seat ventilation device.The fan comprises a shell and a fan body component axially arranged in the shell, the fan body component comprises a first fan body and a second fan body, and the first fan body and the second fan body are symmetrically arranged about a plane perpendicular to the axial direction; the shell is provided with a first air port corresponding to the first fan body and a second air port corresponding to the second fan body, and the shell is configured to enable the opposite ends of the first fan body and the second fan body to be communicated. Therefore, the first fan body operates to enable airflow to enter from the second air port and flow out from the first air port, and the second fan body operates to enable airflow to enter from the first air port and flow out from the second air port.

Description

Technical Field

[0001] The present invention relates to the technical field of seat ventilation, and in particular to a fan and a seat ventilation device. Background Art

[0002] The seats of mobile vehicles are usually equipped with ventilation devices. For example, the seats of cars are usually equipped with ventilation devices. The ventilation devices in the prior art usually include an air bag and a fan for blowing or sucking air into the inner cavity of the air bag. The air bag is provided with air holes on the bag body facing the front surface of the seat. When the fan blows air into the air bag, the airflow in the air bag will blow toward the passengers through the air holes, thereby providing a ventilation effect for the passengers. When the fan sucks air into the air bag, under the action of negative pressure, the airflow near the seat will pass through the passengers and reversely enter the air bag through the air holes, thereby providing another ventilation effect for the passengers. In some mobile vehicles with advanced configurations, the ventilation device has the above two ventilation modes and effects. The ventilation device with the above two ventilation modes and effects is usually provided with two fans for blowing air into the air bag and sucking air into the air bag respectively. However, the provision of two fans is bound to increase the cost of the ventilation device and increase the installation space occupied by the ventilation device. Summary of the invention

[0003] In view of the above technical problems existing in the prior art, the present invention provides a fan and a seat ventilation device.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

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

[0006] The fan main body component comprises a first fan body and a second fan body, wherein the first fan body and the second fan body are symmetrically arranged with respect to a plane perpendicular to the axial direction;

[0007] The shell has a first air port corresponding to the first fan body and a second air port corresponding to the second fan body. The shell is configured so that the first fan body is connected to the opposite ends of the second fan body, so that: the first fan body is operated so that the airflow enters from the second air port and flows out from the first air port, and the second fan body is operated so that the airflow enters from the first air port and flows out from the second air port.

[0008] Preferably,

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

[0010] The housing has a side wall located at the radial periphery of the fan body component and a bottom wall and a top wall respectively opposite to the opposite ends of the first fan body and the opposite ends of the second fan body;

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

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

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

[0014] Preferably, the shell further includes an annular wall between the top wall and the bottom wall, the annular wall is located inside the side wall, the annular wall has a central circular opening, and the opposite ends of the first fan body and the second fan body are connected through the central circular opening.

[0015] Preferably,

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

[0017] The first air port is formed on the housing opposite to the back-to-back end of the first fan body, and the second air port is formed on the housing opposite to the back-to-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, and air holes are arranged on the bag body of the air bag facing the seat. The seat ventilation device also includes the above-mentioned fan, and the first air port of the fan is connected to the inner cavity of the air bag.

[0019] Preferably, a wind bag interface is arranged on the bag body of the wind bag facing away from the air hole, and the first air port of the fan is communicated with the inner cavity of the wind bag through the wind bag interface.

[0020] Preferably, the inner cavity of the air bag is provided with a supporting component, and the supporting component has pores allowing airflow.

[0021] Compared with the prior art, the fan and seat ventilation device disclosed in the present invention have the following beneficial effects:

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

[0023] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

[0024] This summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the invention. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

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

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

[0028] Figure 3 A main cross-sectional view of a ventilation device provided in an embodiment of the present invention (the ventilation device is in a state of sucking air into a wind bag, the fan body is a centrifugal fan body, and the air port is formed at the port of the air duct).

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

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

[0031] Figure 6A main cross-sectional view of a ventilation device provided by an embodiment of the present invention (the ventilation device is in a state of sucking air into an air bag, the fan body is a centrifugal fan body, and the air port is formed on the side wall).

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

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

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

[0035] Reference numerals:

[0036] 100-fan; 10-housing; 11-top wall; 12-bottom wall; 13-side wall; 131-lower side wall; 132-upper side wall; 141-first air port; 142-second air port; 151-first air duct; 152-second air duct; 16-annular wall; 20-main fan component; 21-first fan body; 22-second fan body; 200-wind bag; 201-bag body; 202-air hole; 203-inner cavity; 204-support component. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0040] like Figures 1 to 9 As shown, the embodiment of the present invention discloses a fan 100 and a seat ventilation device including the fan 100. The ventilation device includes a wind bag 200 in addition to the fan 100. The wind bag 200 is surrounded by a bag body 201, thereby forming an inner cavity 203. The bag body 201 of the wind bag 200 facing the seat is provided with an air hole 202, and air can flow out of the wind bag 200 or enter the bag body 201 through the air hole 202. The bag body 201 opposite to the bag body 201 where the air hole 202 is located is provided with a wind bag interface, which penetrates to the inner cavity 203 of the wind bag 200. The fan 100 is connected to the inner cavity 203 of the wind bag 200 through the wind bag interface, so that air can be supplied to the wind bag 200 or air can be sucked from the wind bag 200 by the fan 100. Preferably, the air bag 200 is further provided with a supporting component 204 having a plurality of pores for maintaining the inner cavity 203 of the air bag 200 .

[0041] The fan 100 includes: a housing 10 and a fan main body component 20 arranged in the housing 10; the fan main 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 inlet ends of the airflow. A first air port 141 corresponding to the first fan body 21 is arranged on the housing 10, and when the first fan body 21 is in operation, the airflow enters from the opposite end of the first fan body 21 and flows out from the first air port 141; a second air port 142 corresponding to the second fan body 22 is arranged on the housing 10, and when the second fan body 22 is in operation, the airflow enters from the opposite end of the second fan body 22 and flows out from the second air port 142.

[0042] In the ventilation device, the first air port 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 port 142 is connected to the outside air. Figure 2 , 5 As shown in Figures 8 and 9, if the ventilation device is required to ventilate the passengers in a blowing manner, the first fan body 21 is controlled to operate and the second fan body 22 is controlled to stop operating, and the external air flow enters the housing 10 through the second air port 142. Subsequently, the air flow passes through the gap between the blades of the second fan body 22 and flows out from the opposite end of the second fan body 22. Subsequently, under the action of the operation of the first fan body 21, the air flow enters from the opposite end of the first fan body 21 and flows out from the first air port 141. The air flow flowing out of the first air port 141 is supplied to the inner cavity 203 of the air bag 200. Subsequently, the air flow passes through the air holes 202 of the bag body 201 and the internal channel of the seat and blows toward the passengers from the front side of the seat, thereby achieving a blowing ventilation effect; as shown in Figures 8 and 9, Figure 3 , 6 As shown in Figure 9, if the ventilation device is required to ventilate the passengers in a suction manner, 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 shell 10 through the first air port 141. Subsequently, the airflow passes through the gap between the blades of the first fan body 21 and flows out from the opposite end of the first fan body 21. Subsequently, under the action of the operation 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, negative pressure is formed in 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 a ventilation effect in a suction manner.

[0043] The present invention provides two types of fans 100 .

[0044] A first type of fan 100 .

[0045] like Figures 1 to 6 As shown, the first fan body 21 and the second fan body 22 are both bodies of the centrifugal fan 100. The housing 10 has a bottom wall 12 and a top wall 11 respectively opposite to the back-to-back ends of the first fan body 21 and the back-to-back ends of the second fan body 22, a side wall 13 between the bottom wall 12 and the top wall 11 and located at the radial periphery of the first fan body 21 and the second fan body 22, and an annular wall 16 located on the inner side of the side wall 13 and between the opposite ends of the first fan body 21 and the opposite ends of the second fan body 22, the annular wall 16 has a central circular opening, and the central circular opening serves as a common port for the air inlet 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 relative to the first fan body 21 is preferably referred to as the lower side wall 131, and the axial position of the side wall 13 of the housing 10 relative to the second fan body 22 is preferably referred to as the upper side wall 132. The first air port 141 is formed on the lower sidewall 131 , and the second air port 142 is formed on the upper sidewall 132 .

[0046] 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 shell 10 are inserted into the fan 100 through the air bag interface, so that the first air port 141 enters into the air bag 200, and the second air port 142 is exposed outside the air bag 200 due to its axial position at the upper side.

[0047] In the fan 100 of this type, the first air port 141 and the second air port 142 have two structural types. The first structural type is: Figures 1 to 3 As shown, the first air channel 151 is radially extended from the lower side wall 131, and the second air channel 152 is radially extended from the upper side wall 132. The second air channel 152 is parallel to the first air channel 151 and arranged up and down. The port of the first air channel 151 forms the first air port 141, and the port of the second air channel 152 forms the second air port 142. The first air port 141 is flush with the second air port 142. In this way, the airflow enters or is discharged from the air port only from one direction; the second structural type is: Figures 4 to 6 As shown, the first air port 141 extends circumferentially on the lower side wall 131 , and the second air port 142 extends circumferentially on the upper side wall 132 , so that airflow can enter or be discharged from the air port from all directions of the circumference of the housing 10 .

[0048] A second type of fan 100 .

[0049] like Figures 7 to 9As shown, the first fan body 21 and the second fan body 22 are both bodies of the axial flow fan 100. The housing 10 has a cylinder body that encloses a columnar cavity, the first fan body 21 and the second fan body 22 are located in the cylinder body, the port opposite to the back-to-back end of the cylinder body and the first fan body 21 is the first air port 141, and the port opposite to the back-to-back end of the cylinder body and the second fan body 22 is the second air port 142, so that the airflow enters or is discharged axially from the air port.

[0050] The fan 100 of this type is assembled with the air bag 200 in such a way that the first air port 141 of the housing 10 is docked at 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 .

[0051] In addition, although exemplary embodiments have been described in the present invention, the scope includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and their examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0052] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the present invention. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present invention may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present invention should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0053] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A fan, comprising a housing and a fan main body component axially arranged in the housing, characterized in that: The fan main body component comprises a first fan body and a second fan body, wherein the first fan body and the second fan body are symmetrically arranged with respect to a plane perpendicular to the axial direction; The shell has a first air port corresponding to the first fan body and a second air port corresponding to the second fan body. The shell is configured so that the first fan body is connected to the opposite ends of the second fan body, so that: the first fan body is operated so that the airflow enters from the second air port and flows out from the first air port, and the second fan body is operated so that the airflow enters from the first air port and flows out from the second air port.

2. The fan according to claim 1, characterized in that: The first fan body and the second fan body are both centrifugal fan bodies; The housing has a side wall located at the radial periphery of the fan body component and a bottom wall and a top wall respectively opposite to the opposite ends of the first fan body and the opposite ends of the second fan body; The first air port is formed on the side wall opposite to the axial position of the first fan body, and the second air port 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 duct is formed by radially extending from the side wall opposite to the axial position of the first fan body, and a port of the first air duct serves as the first air port. A second air duct is formed by radially extending from the side wall opposite to the axial position of the second fan body, and a port of the second air duct serves as the second air port.

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

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

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

7. A seat ventilation device, comprising an air bag, wherein the air bag has an inner cavity defined by a bag body, and air holes are arranged on the bag body of the air bag facing the seat, characterized in that: The seat ventilation device further comprises a fan as claimed in any one of claims 1 to 6, wherein a first air port of the fan is communicated with an inner cavity of the air bag.

8. The seat ventilation device according to claim 7, characterized in that: A wind bag interface is arranged on the bag body of the wind bag which is opposite to the air hole, and the first air port of the fan is communicated with the inner cavity of the wind bag through the wind bag interface.

9. The seat ventilation device according to claim 7, characterized in that: The inner cavity of the air bag is provided with a supporting component, and the supporting component has holes allowing air flow.

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