A fan and seat ventilation device

Abstract

The utility model belongs to the technical field of seat ventilation, and disclose a fan and seat ventilation device, this kind of fan, including the casing, support and axial arrangement in the casing fan main part, its fan main part includes first fan blade and second fan blade, first fan blade with second fan blade pass through the support different shaft stacking and intercommunication, the casing includes first air port, second air port, first fan blade operation makes the airflow from second air port enters and from first air port flows out, second fan blade operation makes the airflow from first air port enters and from second air port flows out, the utility model solves the problem that needs two fans to increase cost and space in the existing seat ventilation device, has realized the efficient blowing type and the air intake type ventilation effect.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat technology, specifically 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.

[0003] A fan and seat ventilation device are proposed to solve the above problems. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a fan and seat ventilation device, which solves the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fan, comprising a housing, a bracket, and a fan body component axially arranged in the housing, wherein the fan body component comprises a first fan blade and a second fan blade, the first fan blade and the second fan blade being stacked on opposite axes and interconnected with each other via the bracket;

[0006] The housing includes a first housing and a second housing, wherein a corresponding first air port is provided between the first housing and the first fan blade; and a corresponding second air port is provided between the second housing and the second fan blade.

[0007] The main fan component also includes a motor, which is respectively disposed between the first housing and the first fan blade and between the second housing and the second fan blade; the operation of the first fan blade causes airflow to enter from the second air inlet and exit from the first air inlet, and the operation of the second fan blade causes airflow to enter from the first air inlet and exit from the second air inlet.

[0008] Preferably, the first fan blade is a butterfly fan blade; the second fan blade is a volute fan blade, and the first fan blade and the second fan blade have different thicknesses along the direction of their rotation axes.

[0009] Preferably, both the second air port and the first air port are located on the side wall of the housing.

[0010] Preferably, the bracket includes a downwardly extending buckle connected to a protruding buckle of the second housing, and the bracket also includes an upwardly extending threaded post connected to the first housing by screws.

[0011] Preferably, the thickness of the first fan blade along its rotation axis is less than the thickness of the second fan blade along its rotation axis.

[0012] Preferably, the first housing and the second housing are connected to the support via a strong magnet, and the support is hollow in the middle.

[0013] Preferably, the first air inlet is located on the side wall of the first housing; the second air inlet is located on the side wall of the second housing.

[0014] Preferably, a seat ventilation device includes an air bag having an inner cavity defined by a bag body, air holes being arranged on the bag body facing the seat, the seat ventilation device further including the fan, a first housing located within the inner cavity of the air bag, and a second housing located outside the air bag away from the seat.

[0015] Preferably, the first air inlet of the fan is in communication with the inner cavity of the air bag.

[0016] Preferably, the second air inlet of the fan is connected to an air source.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention achieves both blowing and suction ventilation by arranging two fan blades with different axes and stacked in the housing of the fan of the ventilation device. The thickness of the first fan blade is smaller than that of the second fan blade, which reduces the installation space occupied by the fan and reduces the cost of the fan to a certain extent. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the fan structure of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the fan of this utility model;

[0021] Figure 3 This is an exploded structural diagram of the fan of this utility model;

[0022] Figure 4 This is a schematic diagram of the seat ventilation device of this utility model.

[0023] In the diagram: 1. Fan; 2. Seat ventilation device; 101. First housing; 102. Second housing; 103. Motor; 104. First fan blade; 105. Second fan blade; 106. First air inlet; 107. Second air inlet; 108. Bracket; 109. Threaded post; 110. Buckle; 201. Air bag. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-4 As shown, this utility model provides: a fan 1, including a housing, a bracket 108, and a fan body component axially arranged in the housing. The fan body component includes a first fan blade 104 and a second fan blade 105, which are stacked on different axes and interconnected through the bracket 108. The housing includes a first housing 101 and a second housing 102. A corresponding first air port 106 is provided between the first housing 101 and the first fan blade 104. A corresponding second air port 107 is provided between the second housing 102 and the second fan blade 105.

[0026] The main fan component also includes a motor 103, which is respectively disposed between the first housing 101 and the first fan blade 104, and between the second housing 102 and the second fan blade 105. The operation of the first fan blade 104 causes airflow to enter from the second air inlet 107 and exit from the first air inlet 106, while the operation of the second fan blade 105 causes airflow to enter from the first air inlet 106 and exit from the second air inlet 107. The first fan blade 104 is a butterfly fan blade; the second fan blade 105 is a volute fan blade. The fan blades, the first fan blade 104 and the second fan blade 105, have different thicknesses along the direction of their rotation axes; the second air inlet 107 and the first air inlet 106 are both located on the side wall of the housing; the bracket 108 includes a downwardly extending buckle 110, which is connected to a protruding buckle 110 of the second housing 102; the bracket 108 also includes an upwardly extending threaded post 109, which is connected to the first housing 101 by screws.

[0027] The first fan blade 104 is a butterfly fan blade, whose structural characteristic is diffused airflow output, suitable for evenly distributing airflow to the air bag; the second fan blade 105 is a volute fan blade, whose core advantage is pressurized airflow input, which can efficiently draw airflow from external air sources and increase air pressure, avoiding insufficient air intake. The design of the two blades stacked on opposite axes and interconnected is essentially to build an airflow processing chain from pressurization to diversion and finally to diffusion, providing stable air supply and uniform air output for seat ventilation.

[0028] The thickness of the first fan blade 104 along its rotation axis is less than the thickness of the second fan blade 105 along its rotation axis. The first fan blade 104 needs to be embedded in the inner cavity of the air bag 201. The thinner thickness can reduce the space occupied inside the air bag 201. At the same time, the thin structure of the butterfly fan makes it easier to achieve lateral airflow diffusion. The thick structure of the second fan blade 105 volute fan can accommodate a larger airflow channel and pressurization chamber, ensuring that the airflow drawn from the external air source has sufficient pressure and avoiding pressure attenuation during subsequent air delivery.

[0029] The first housing 101 and the second housing 102 are connected to the bracket 108 by a strong magnet, and the bracket 108 is hollow in the middle.

[0030] The first air port 106 is located on the side wall of the first housing 101; the second air port 107 is located on the side wall of the second housing 102.

[0031] A seat ventilation device 2 includes an air bag 201 having an inner cavity defined by a bag body. Air holes are arranged on the bag body of the air bag 201 facing the seat. The seat ventilation device 2 also includes a fan 1. A first housing 101 is located within the inner cavity of the air bag 201, and a second housing 102 is located outside the air bag 201 away from the seat. A first air inlet 106 of the fan 1 communicates with the inner cavity of the air bag 201, and a second air inlet 107 of the fan 1 communicates with an air source.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fan, characterized in that, The device includes a housing, a bracket, and a fan body component axially arranged in the housing. The fan body component includes a first fan blade and a second fan blade, which are stacked on opposite axes and connected to each other via the bracket. The housing includes a first housing and a second housing, wherein a corresponding first air port is provided between the first housing and the first fan blade; and a corresponding second air port is provided between the second housing and the second fan blade. The main fan component also includes a motor, which is respectively disposed between the first housing and the first fan blade and between the second housing and the second fan blade; the operation of the first fan blade causes airflow to enter from the second air inlet and exit from the first air inlet, and the operation of the second fan blade causes airflow to enter from the first air inlet and exit from the second air inlet.

2. The fan according to claim 1, characterized in that: The first fan blade is a butterfly fan blade; the second fan blade is a volute fan blade, and the thickness of the first fan blade and the second fan blade is different along the direction of their rotation axes.

3. The fan according to claim 2, characterized in that: Both the second air port and the first air port are located on the side wall of the housing.

4. The fan according to claim 3, characterized in that: The bracket includes a downwardly extending buckle that connects to a protruding buckle of the second housing, and the bracket also includes an upwardly extending threaded post that connects to the first housing via screws.

5. The fan according to claim 2, characterized in that: The thickness of the first fan blade along its rotation axis is less than the thickness of the second fan blade along its rotation axis.

6. The fan according to claim 5, characterized in that: The first and second housings are connected to the support via strong magnets, and the support is hollow in the middle.

7. The fan according to claim 3, characterized in that: The first air inlet is located on the side wall of the first housing; the second air inlet is located on the side wall of the second housing.

8. 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 7, wherein the first housing is located inside the cavity of the air bag, and the second housing is located outside the air bag away from the seat.

9. The seat ventilation device according to claim 8, characterized in that, The first air inlet of the fan is connected to the inner cavity of the air bag.

10. The seat ventilation device according to claim 8, characterized in that, The second air inlet of the fan is connected to an air source.

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