Seat ventilation device
By employing a fan and two air ducts in the seat ventilation system and using a valve component to control the opening and closing of the air ducts, the switching between blowing and suction functions is realized, solving the problems of excessive cost and space occupation in existing technologies and achieving a highly efficient ventilation effect.
Patent Information
- Application Number
- CN202422959970.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing seat ventilation systems require two fans to achieve both blowing and suction functions, resulting in increased costs and excessive space usage.
It adopts a design with one fan and two air ducts. The opening and closing of the air ducts are controlled by a valve component to realize the switching between blowing and suction functions. The blowing and suction effects are achieved by using one fan.
By using a single fan to achieve both blowing and suction functions, costs are reduced and the space occupied by the device is minimized.
Smart Images
Figure CN223478876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seat ventilation technology, and in particular to a 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. Utility Model Content
[0003] In view of the above-mentioned technical problems existing in the prior art, the present invention provides a seat ventilation device.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0005] A seat ventilation device includes a fan and an air bag, the air bag having an inner cavity defined by a bag body, air holes arranged on the bag body facing the seat, the air bag having an air bag interface communicating with the inner cavity for connection with the fan, the fan including:
[0006] The housing includes a first housing and a second housing;
[0007] The centrifugal fan body is disposed within the first housing, wherein:
[0008] An air inlet is provided at the center of the top wall of the first housing, and an air outlet is provided on the side wall of the first housing. The centrifugal fan body rotates so that airflow enters the first housing from the air inlet and flows out from the air outlet.
[0009] The second housing and the first housing define a first air passage and a second air passage. The distal ends of the first air passage and the second air passage are respectively connected to the air outlet and the air inlet. The proximal ends of the first air passage and the proximal ends of the second air passage are both connected to the air bag interface.
[0010] The first air passage is equipped with a first valve component that controls the air outlet to selectively interface with the air bag or to communicate with the outside air, and the second air passage is equipped with a second valve component that controls the air inlet to selectively interface with the air bag or to communicate with the outside air.
[0011] Preferably, both the first air passage and the second air passage extend in the radial direction of the housing, and the first air passage and the second air passage are arranged side by side in the transverse direction.
[0012] Preferably, the first airway has a rectangular cross-section, and a first window is provided on the top wall of the first airway; wherein:
[0013] The first valve component includes: a first valve and a first actuator; the first valve is pivotally connected to the top wall of a first air passage adjacent to the first window, and the first actuator is used to drive the first valve to pivot so that the first valve closes the first window and simultaneously opens the first air passage, or so that the first valve closes the first air passage and simultaneously opens the first window.
[0014] Preferably, the cross-section of the second airway is rectangular, and a second window is provided on the top wall of the second airway; wherein:
[0015] The second valve component includes a second valve and a second actuator; the second valve is pivotally connected to the top wall of the second air passage adjacent to the second window, and the second actuator is used to drive the second valve to pivot so that the second valve closes the second window and simultaneously opens the second air passage, or so that the second valve closes the second air passage and simultaneously opens the second window.
[0016] Preferably, the distal end of the first air passage is flush with the distal end of the second air passage to form a fan interface, and the fan interface is connected to the air bag interface.
[0017] Preferably, the air bag interface is located at the edge of the air bag.
[0018] Preferably, the first window faces away from the seat.
[0019] Preferably, the second window faces away from the seat.
[0020] Compared with the prior art, the beneficial effects of the seat ventilation device disclosed in this utility model are:
[0021] The ventilation device provided by this utility model can achieve both blowing and suction ventilation using a single fan.
[0022] 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 present invention.
[0023] The overview of various implementations or examples of the technology described in this utility model is not a complete disclosure of the full scope or all features of the disclosed technology. Attached Figure Description
[0024] 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 utility model. 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.
[0025] Figure 1 This is a three-dimensional structural diagram of a seat ventilation device provided in an embodiment of the present invention.
[0026] Figure 2 A top view of a seat ventilation device provided in an embodiment of this utility model.
[0027] Figure 3 for Figure 2 A AA-direction cross-sectional view (the seat ventilation device is in the state of blowing air into the air bag).
[0028] Figure 4 for Figure 2 BB section view (seat ventilation device is blowing air into the air bag).
[0029] Figure 5 for Figure 2 A AA-direction cross-sectional view (the seat ventilation device is in the state of drawing air into the air bag).
[0030] Figure 6 for Figure 2 BB section view (seat ventilation device is in the state of drawing air into the air bag).
[0031] Figure label:
[0032] 100-Fan; 10-Housing; 11-First housing; 111-Outlet; 112-Inlet; 12-Second housing; 20-Centrifugal fan body; 31-First air passage; 311-First port; 312-First window; 32-Second air passage; 321-Second port; 322-Second window; 411-First valve; 412-First actuator; 421-Second valve; 422-Second actuator; 200-Air bag; 201-Air bag interface; 202-Bag body; 203-Air hole; 204-Support component; 205-Inner cavity. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model 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 this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0034] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model 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.
[0035] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.
[0036] An embodiment of this utility model discloses a seat ventilation device, which is preferably installed on the back of a vehicle seat to achieve a ventilation effect by blowing / inhaling airflow through the occupant.
[0037] like Figures 1 to 6As shown, the ventilation device includes a fan 100 and an air bag 200. The air bag 200 is formed by a bag body 202, thus creating an inner cavity 203. Air holes 203 are provided on the bag body 202 facing the seat, allowing airflow to flow out of or into the bag body 202 through the air holes 203. An air bag inlet 201 is located at the edge of the air bag 200, communicating with the inner cavity 203. This inlet 201 connects to the fan 100 to supply airflow into or draw airflow from the air bag 200. In some preferred configurations, the air bag 200 also includes a support member 204 with numerous pores to maintain the inner cavity 203.
[0038] The fan 100 includes a housing 10 and a centrifugal fan body 20; the housing 10 includes a first housing 11 and a second housing 12. The first housing 11 is configured as a volute structure to cooperate with the centrifugal fan body 20 to form a centrifugal fan 100. Specifically, an air inlet 112 is provided in the middle of the top wall of the first housing 11, and an air outlet 111 is provided on the side wall of the first housing 11. When the centrifugal fan body 20 rotates, the centrifugal fan body 20 cooperates with the first housing 11 so that airflow enters from the air inlet 112 and flows out from the air outlet 111.
[0039] The second housing 12 and the first housing 11 define a first air passage 31 and a second air passage 32. The first air passage 31 and the second air passage 32 extend in the radial direction. The distal end (or inner end) of the first air passage 31 is connected to the air outlet 111 of the first housing 11, and the distal end (or inner end) of the second air passage 32 is connected to the air inlet 112 of the first housing 11. Thus, the fan 100 can draw in air through the second air passage 32 and blow air through the first air passage 31.
[0040] The first air passage 31 and the second air passage 32 are arranged parallel and side by side in the transverse direction of the housing 10. This not only facilitates the first housing 11 and the second housing 12 in defining the first air passage 31 and the second air passage 32, but also facilitates the opening of a window that allows airflow (described below). The near port of the first air passage 31 (let's call it the first port 311) and the near port of the second air passage 32 (let's call it the second port 321) are flush to form the fan interface of the fan 100, which is sealed to the air bag interface 201. Thus, when the centrifugal fan body 20 rotates, the airflow flows along the second air passage 32 and through the air inlet 112 to the first housing 11. Then, with the cooperation of the centrifugal fan body 20 and the first housing 11, the airflow flows out from the air outlet 111 and along the first air passage 31. Therefore, the first air passage 31 is the blowing air passage, and the second air passage 32 is the suction air passage.
[0041] A first valve component is provided at the first air passage 31, which is used to selectively connect the air outlet 111 to the air bag interface 201 or to the outside air. A second valve component is provided at the second air passage 32, which is used to selectively connect the air inlet 112 to the air bag interface 201 or to the outside air. Specifically, the first air passage 31 has a rectangular cross-section, and a first window 312 is provided on the top wall of the first air passage 31. The first valve component includes a first valve 411 pivotally connected to the top wall and adjacent to the first window 312, and a first actuator 412 for driving the first valve 411 to pivot. Preferably, a micro motor is used as the first actuator 412. The first valve 411 opens the first window 312 by pivoting inward into the first air passage 31 and abutting against the bottom wall of the first air passage 31, and at the same time cuts off the first air passage 31 between the first window 312 and the air bag interface 201. The first valve 411 closes the first window 312 by pivoting in the opposite direction and abutting against the top wall, and at the same time guides the first air passage 31... The second air passage 32 has a rectangular cross-section, and a second window 322 is provided on the top wall of the second air passage 32. The second valve component includes a second valve 421 pivotally connected to the top wall and adjacent to the second window 322, and a second actuator 422 for driving the second valve 421 to pivot. Preferably, a micro motor is used as the second actuator 422. The second valve 421 opens the second window 322 by pivoting towards the inside of the second air passage 32 and abutting against the bottom wall of the second air passage 32, and at the same time cuts off the second air passage 32 between the second window 322 and the air bag interface 201. The second valve 421 closes the second window 322 by pivoting in the opposite direction and abutting against the top wall, and at the same time opens the second air passage 32. Preferably, the top wall of the second housing 12 serves as the top wall of the first air passage 31 and the second air passage 32. The first window 312 and the second window 322 opened on the top wall face away from the seat, thereby preventing the airflow passing through the first window 312 and the second window 322 from being blocked by the seat.
[0042] The working process of the ventilation device described above is described below.
[0043] like Figure 3 , 4 and combined Figure 1As shown, if the ventilation device is required to ventilate the occupants by blowing air, the second valve 421 is driven to pivot inward toward the second air passage 32 to open the second window 322. At the same time, the second valve 421 cuts off the second air passage 32 between the second window 322 and the air bag interface 201. The first valve 411 is driven to pivot outward toward the first air passage 31 to close the first window 312. At the same time, the second valve 421 opens the first air passage 31 between the air outlet 111 and the air bag interface 201, so that the centrifugal fan body 20 can run. Thus, external airflow enters the second air passage 32 between the second valve 421 and the air inlet 112 through the second window 322. Subsequently, it enters the first housing 11 through the air inlet 112. Then, the airflow flows out from the air outlet 111 and passes through the first air passage 31 and the first port 311 to be supplied into the inner cavity 203 of the air bag 200. The airflow then passes through the air holes 203 of the air bag 200 and the internal channels of the seat, blowing from the front of the seat towards the occupant, thereby achieving a blowing-type ventilation effect. During this process, because the second valve 421 pivots into the second air passage 32, the second valve 421 also restricts the airflow in the air bag 200 from being discharged through the second air passage 32.
[0044] like Figure 5 , 6 and combined Figure 1 As shown, if the ventilation device is required to ventilate the occupant by suction, the second valve 421 is driven to pivot outward toward the second air passage 32, closing the second window 322. The first valve 411 is driven to pivot inward toward the first air passage 31, opening the first window 312. Simultaneously, the first valve 411 cuts off the first air passage 31 between the first window 312 and the air bag interface 201, causing the centrifugal fan body 20 to operate. At this time, the airflow in the air bag 200 flows along the second air passage 32 and through the air inlet 112 to the first housing 11. Subsequently, the airflow flows out from the air outlet 111 and is discharged through the first window 312. This process creates a negative pressure inside the air bag 200, thereby forcing the air around the front 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 203 of the air bag 200 to achieve the ventilation effect of suction. During this process, as the first valve 411 pivots into the first air passage 31, the first valve 411 also restricts the external airflow from entering the air bag 200 through the first air passage 31.
[0045] Furthermore, although exemplary embodiments have been described in this invention, its scope includes any and all embodiments based on this 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, which 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 following claims and the full scope of their equivalents.
[0046] 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 not claimed is necessary for any claim. Rather, the subject matter of the invention may be less than all the features of a particular disclosed embodiment. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is an independent, separate embodiment, and these embodiments are contemplated 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.
[0047] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.
Claims
1. A seat ventilation device comprising a fan and an air bag, the air bag having an inner cavity defined by a bag body, air holes arranged on the bag body facing the seat, the air bag having an air bag interface communicating with the inner cavity for connection with the fan, characterized in that, The fan includes: The housing includes a first housing and a second housing; The centrifugal fan body is disposed within the first housing, wherein: An air inlet is provided at the center of the top wall of the first housing, and an air outlet is provided on the side wall of the first housing. The centrifugal fan body rotates so that airflow enters the first housing from the air inlet and flows out from the air outlet. The second housing and the first housing define a first air passage and a second air passage. The distal ends of the first air passage and the second air passage are respectively connected to the air outlet and the air inlet. The proximal ends of the first air passage and the proximal ends of the second air passage are both connected to the air bag interface. The first air passage is equipped with a first valve component that controls the air outlet to selectively interface with the air bag or to communicate with the outside air, and the second air passage is equipped with a second valve component that controls the air inlet to selectively interface with the air bag or to communicate with the outside air.
2. The seat ventilation device according to claim 1, characterized in that, Both the first air passage and the second air passage extend in the radial direction of the housing, and the first air passage and the second air passage are arranged side by side in the transverse direction.
3. The seat ventilation device according to claim 2, characterized in that, The first airway has a rectangular cross-section, and a first window is provided on the top wall of the first airway; wherein: The first valve component includes: a first valve and a first actuator; the first valve is pivotally connected to the top wall of a first air passage adjacent to the first window, and the first actuator is used to drive the first valve to pivot so that the first valve closes the first window and simultaneously opens the first air passage, or so that the first valve closes the first air passage and simultaneously opens the first window.
4. The seat ventilation device according to claim 2, characterized in that, The second airway has a rectangular cross-section, and a second window is provided on the top wall of the second airway; wherein: The second valve component includes a second valve and a second actuator; the second valve is pivotally connected to the top wall of the second air passage adjacent to the second window, and the second actuator is used to drive the second valve to pivot so that the second valve closes the second window and simultaneously opens the second air passage, or so that the second valve closes the second air passage and simultaneously opens the second window.
5. The seat ventilation device according to claim 2, characterized in that, The proximal end of the first airway is flush with the proximal end of the second airway to form a fan interface, which is connected to the air bag interface.
6. The seat ventilation device according to claim 2, characterized in that, The air bag interface is located at the edge of the air bag.
7. The seat ventilation device according to claim 3, characterized in that, The first window faces away from the seat.
8. The seat ventilation device according to claim 4, characterized in that, The second window faces away from the seat.