Cushion ventilation structure, automobile seat and bed

Abstract

The utility model discloses a cushion ventilation structure, an automobile seat and a bed, according to the technical scheme of the cushion ventilation structure, a wind wheel is provided with a plurality of centrifugal blades and a plurality of axial flow blades, radial and axial two-way air outlet can be achieved, airflow blown out from an axial flow air outlet and a centrifugal air outlet can penetrate through a cushion through ventilation holes, and the ventilation effect is good. Therefore, a user sitting on or lying on the cushion tool can flow through the cushion tool, and the ventilation and heat dissipation effects on the user are achieved. Thus, under the condition that the number of the draught fans does not need to be increased, the air volume blown to the ventilation holes can be increased, and therefore the ventilation effect of the cushion ventilation structure can be improved.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, and in particular to a cushion ventilation structure, car seat and bed. Background Technology

[0002] With the widespread use of cars, they have become an indispensable means of transportation. During long car rides, poor ventilation in car seats often leads to sweating on the buttocks and back, potentially affecting health. Currently available ventilated car seats with fans offer some ventilation and heat dissipation, with the fan installed underneath and blowing air through the ventilation holes. However, the airflow from a single fan is limited, and there isn't enough space underneath the seat to accommodate more fans, resulting in poor overall ventilation. Utility Model Content

[0003] The main purpose of this invention is to propose a ventilation structure for mattresses, aiming to solve the technical problem of how to improve the ventilation effect of mattresses.

[0004] To achieve the above objectives, the ventilation structure of the mat proposed in this utility model includes:

[0005] A pad having a first surface and a second surface arranged opposite to each other, and the pad having a plurality of ventilation holes, the two ends of each ventilation hole penetrating the first surface and the second surface of the pad, respectively;

[0006] A fan, comprising a volute, a motor, and a rotor, wherein the rotor comprises a hub, a connecting ring, multiple axial blades, and multiple centrifugal blades;

[0007] A plurality of axial flow blades are circumferentially connected to the outer peripheral wall of the hub; a plurality of centrifugal blades are arranged at intervals around the outer periphery of the hub and spaced apart from the outer peripheral wall of the hub; a connecting ring is disposed around the outer periphery of the plurality of axial flow blades and connects the outer ends of the plurality of centrifugal blades away from the hub; the outer end of each axial flow blade is fixedly connected to the inner ends of the plurality of centrifugal blades to guide the airflow radially along the hub to the plurality of centrifugal blades;

[0008] The impeller is installed inside the volute, which has an air inlet, an axial flow outlet, and a centrifugal outlet. The air inlet corresponds to the air inlet side of the axial flow blades, the axial flow outlet corresponds to the air outlet side of the axial flow blades, and the centrifugal outlet corresponds to the air outlet side of the centrifugal blades. The motor drives the impeller to rotate, so as to guide the external airflow into the volute from the air inlet and blow it out through the axial flow outlet and the centrifugal outlet.

[0009] The fan is located on one side of the second surface of the pad, and the axial flow outlet and the centrifugal flow outlet are both connected to the plurality of ventilation holes so that the airflow blown out by the axial flow outlet and the centrifugal flow outlet flows out of the first surface through the ventilation holes.

[0010] Optionally, the ventilation structure of the mat further includes an air collecting hood, which is disposed on the second surface of the mat and covers the plurality of ventilation holes. The air collecting hood has a first air passage and a second air passage. The axial air outlet is connected to the first air passage, and the centrifugal air outlet is connected to the second air passage.

[0011] Optionally, the axial flow outlet faces the air collecting hood, and the ventilation structure of the pad further includes a first connecting cylinder, one end of which is connected to the first air outlet and the other end of which is connected to the axial flow outlet.

[0012] Optionally, the ventilation structure of the mat further includes a second connecting cylinder, which is bent and connected at one end to the second air inlet and at the other end to the centrifugal air outlet.

[0013] Optionally, the outer end of each of the axial flow blades is interposed with the inner ends of the plurality of centrifugal blades.

[0014] Optionally, each centrifugal blade consists of an air inlet section and an air outlet section, the air outlet section being connected to the side of the air inlet section away from the hub; the walls of multiple air outlet sections on the same side of the hub in the axial direction are all connected to the connecting ring, and the outer end of each axial flow blade is inserted into multiple air inlet sections and is disposed adjacent to or connected to the inner peripheral wall of the connecting ring.

[0015] Optionally, in the radial direction of the hub, the length of the air outlet section is greater than the length of the air inlet section.

[0016] Optionally, the connecting ring is connected to the far end of a plurality of air outlet sections located in the air outlet direction of the axial flow blades.

[0017] This utility model also proposes a car seat, including the cushion ventilation structure as described above, wherein the cushion of the cushion ventilation structure is at least one of the seat cushion and backrest cushion of the car seat.

[0018] This utility model also proposes a bed, including the mattress ventilation structure as described above, wherein the mattress of the mattress ventilation structure is the mattress of the bed.

[0019] In the technical solution of this utility model's ventilation structure for a mattress, the impeller, by setting multiple centrifugal blades and multiple axial blades, can achieve bidirectional airflow in both radial and axial directions. The airflow blown from both the axial and centrifugal air outlets passes through the ventilation holes and through the mattress, thus flowing over the user sitting or lying on the mattress, providing ventilation and heat dissipation. In this way, without increasing the number of fans, the airflow volume directed towards the ventilation holes can be increased, thereby improving the ventilation effect of the mattress's ventilation structure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of one embodiment of the ventilation structure of the mat of this utility model;

[0022] Figure 2 This is a schematic diagram of the ventilation structure of the mat of this utility model from another direction;

[0023] Figure 3 This is an exploded view of an embodiment of the ventilation structure of the mat of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of a fan according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of an embodiment of the wind turbine of this utility model;

[0026] Figure 6 This is a schematic diagram of the wind turbine in another direction of this utility model.

[0027] Explanation of icon numbers:

[0028] label name label name label name 100 Windmill 110 wheel hub 120 Connecting ring 130 Axial flow blades 140 Centrifuge blades 141 Air intake section 142 Air outlet section 200 Snail shell 210 air inlet 220 Axial air outlet 230 Centrifugal air outlet 10 mats 11 Ventilation holes 20 Wind collector cover 21 First wind gap 22 Second air vent 23 First connecting cylinder 24 Second connecting cylinder 30 Fan

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] 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.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] In the embodiments of this utility model, such as Figures 1 to 6As shown, the ventilation structure of the mat includes: a mat 10, the mat 10 having a first surface and a second surface arranged opposite to each other, the mat 10 having a plurality of ventilation holes 11, the two ends of each ventilation hole 11 penetrating the first surface and the second surface of the mat 10 respectively; a fan 30, the fan 30 including a volute 200, a motor and a fan wheel 100, the fan wheel 100 including a hub 110, a connecting ring 120, a plurality of axial flow blades 130 and a plurality of centrifugal blades 140; and a plurality of the volute 100... Axial flow blades 130 are circumferentially connected to the outer peripheral wall of the hub 110; a plurality of centrifugal blades 140 are arranged at intervals around the outer periphery of the hub 110 and spaced apart from the outer peripheral wall of the hub 110; a connecting ring 120 is circumferentially disposed around the outer periphery of the plurality of axial flow blades 130 and connects the outer ends of the plurality of centrifugal blades 140 away from the hub 110; the outer end of each axial flow blade 130 is fixedly connected to the inner end of the plurality of centrifugal blades 140 for use in... The airflow is guided radially along the hub 110 to the plurality of centrifugal blades 140; the impeller 100 is installed inside the volute 200, which has an air inlet 210, an axial flow outlet 220, and a centrifugal outlet 230. The air inlet 210 corresponds to the air inlet side of the axial flow blade 130, the axial flow outlet 220 corresponds to the air outlet side of the axial flow blade 130, and the centrifugal outlet 230 corresponds to the air outlet side of the centrifugal blade 140; the motor The fan 30 is used to drive the impeller 100 to rotate, so as to guide the external airflow into the volute 200 from the air inlet 210 and blow it out through the axial air outlet 220 and the centrifugal air outlet 230; the fan 30 is disposed on one side of the second surface of the pad 10, and the axial air outlet 220 and the centrifugal air outlet 230 are both connected to a plurality of ventilation holes 11 so that the airflow blown out by the axial air outlet 220 and the centrifugal air outlet 230 flows out of the first surface through the ventilation holes 11.

[0034] In this embodiment, the cushion 10 can be a seat cushion, backrest cushion, or mattress. The first surface of the cushion 10 is used for a user to sit, lean against, or lie down. The cushion 10 can be made of elastic material to improve the user's experience when sitting, leaning against, or lying down. When the cushion 10 is used as a seat cushion or backrest cushion, it can provide ventilation and heat dissipation for the user's buttocks or back. When the cushion 10 is used as a mattress, it can provide ventilation and heat dissipation for the entire body of the user lying on the mattress. Multiple ventilation holes 11 are arranged in a matrix, and the airflow from the axial air outlet 220 and the centrifugal air outlet 230 can flow to multiple ventilation holes 11 simultaneously. This increases the area on the cushion 10 where airflow can pass through, thereby increasing the area of ​​airflow to the user and improving the ventilation and heat dissipation effect. When the user sits on the cushion 10, their body parts will partially block the ventilation holes 11. The matrix distribution of the ventilation holes 11 can prevent all the ventilation holes 11 from being blocked by the user's body parts, thus ensuring the airflow between the upper and lower parts of the cushion 10.

[0035] Ventilation holes 11 penetrate the pad 10 along the thickness direction of the pad 10. Taking a seat cushion as an example, the fan 30 is used to drive gas from the air inlet 210 to the axial air outlet 220 and the centrifugal air outlet 230, thereby driving the gas on one side of the second surface of the pad 10 to flow through the ventilation holes 11 to the first surface of the pad 10.

[0036] Multiple axial blades 130 are connected to the outer peripheral wall of the hub 110, thus forming a structure similar to an axial flow impeller 100. The specific structure of the axial blades 130 and the hub 110, as well as the number of axial blades 130, can refer to existing designs and are not specifically limited here. Multiple centrifugal blades 140 are arranged at intervals around the outer periphery of the hub 110 and connected by connecting rings 120, thus forming a structure similar to a centrifugal impeller 100. The number and specific structure of the multiple centrifugal blades 140 also refer to existing designs and are not specifically limited here; it is sufficient that the inner peripheral wall of the multiple centrifugal blades 140 is spaced from the outer peripheral wall of the hub 110 to provide a channel for the multiple axial blades 130 to discharge air. The hub 110 can be used to install a motor, which can then drive the hub 110 to rotate, thereby driving the entire impeller 100 to rotate.

[0037] To improve connection strength and reduce connection difficulty, the hub 110, connecting ring 120, multiple axial flow blades 130, and multiple centrifugal blades 140 can optionally be integrally formed. Alternatively, in some embodiments, the multiple axial flow blades 130 and multiple centrifugal blades 140 can be formed separately and then connected. With the connecting ring 120 surrounding the outer periphery of the multiple axial flow blades 130, the connecting ring 120 will not obstruct the airflow from the axial flow blades 130. Furthermore, the outer ends of the multiple centrifugal blades 140 are connected via the connecting ring 120, and the inner ends of some centrifugal blades 140 are connected to the axial flow blades 130, eliminating the need for an additional inner ring connecting the inner ends of the multiple centrifugal blades 140, thus simplifying components and reducing wind resistance. The connecting ring 120 connects the outer ends of the multiple centrifugal blades 140 away from the hub 110; therefore, the connecting ring 120 can be connected to the outer peripheral wall of the multiple centrifugal blades 140 or to the axial side wall of the multiple centrifugal blades 140 of the hub 110. The distance between the inner peripheral walls of the multiple centrifugal blades 140 and the outer peripheral wall of the hub 110 depends on the radial length of the axial blades 130 in the hub 110 and the connection point between the axial blades 130 and the centrifugal blades 140. This distance is not specifically limited here. It should be noted that the distance between the inner peripheral walls of the multiple centrifugal blades 140 and the outer peripheral wall of the hub 110 must be sufficient to meet the axial airflow requirements of the multiple axial blades 130.

[0038] The impeller 100 of this utility model, by setting multiple centrifugal blades 140 and multiple axial blades 130, can achieve bidirectional airflow in both radial and axial directions, thus meeting the usage requirements of occasions that require both axial and radial airflow. The connecting ring 120 is arranged around the outer periphery of the multiple axial blades 130 and connects the outer ends of the multiple centrifugal blades 140 away from the hub 110. This connecting ring 120 connects the multiple centrifugal blades 140 without obstructing the airflow from the axial blades 130. Meanwhile, by fixing the outer end of each axial blade 130 to the inner end of multiple centrifugal blades 140, there is no gap between the outer end of the axial blade 130 and the inner peripheral wall of the centrifugal blade 140. Therefore, when the impeller 100 rotates, the multiple axial blades 130 drive the airflow to enter the impeller 100 axially. Guided by the multiple axial blades 130, part of the airflow flows out axially between two adjacent axial blades 130, while another part of the airflow flows radially into the multiple centrifugal blades 140 from the windward side of the axial blades 130. In this way, the wind loss caused by the gap between the outer peripheral wall of the axial blade 130 and the inner peripheral wall of the centrifugal blade 140 is eliminated, which can effectively increase the radial airflow of the multiple centrifugal blades 140 of the impeller 100, thereby improving the air outlet effect of the entire impeller 100 and improving the overall performance and efficiency of the fan 30.

[0039] In the technical solution of the ventilation structure of this utility model, the impeller 100, by setting multiple centrifugal blades 140 and multiple axial blades 130, can achieve bidirectional airflow in both radial and axial directions. The airflow blown from the axial air outlet 220 and the centrifugal air outlet 230 will pass through the ventilation holes 11 and pass over the mat 10, thereby flowing over the user sitting or lying on the mat 10, so as to achieve the effect of ventilation and heat dissipation for the user. In this way, without increasing the number of fans 30, the air volume blown towards the ventilation holes 11 can be increased, thereby improving the ventilation effect of the mat ventilation structure.

[0040] For example, such as Figure 2 and Figure 3 As shown, the ventilation structure of the mat also includes an air collecting hood 20. The air collecting hood 20 is disposed on the second surface of the mat 10 and covers the plurality of ventilation holes 11. The air collecting hood 20 has a first air passage 21 and a second air passage 22. The axial flow outlet 220 is connected to the first air passage 21, and the centrifugal air outlet 230 is connected to the second air passage 22.

[0041] The air collecting hood 20 and the second surface of the pad 10 enclose an air collecting space. The airflow blown from the axial outlet 220 and the centrifugal outlet 230 first flows into the air collecting space, and then flows to the top of the pad 10 through the various ventilation holes 11. The air collecting hood 20 simplifies the connection between the fan 30 and the multiple ventilation holes 11.

[0042] Specifically, such as Figure 2 and Figure 3 As shown, the axial flow outlet 220 faces the air collecting hood 20. The ventilation structure of the pad also includes a first connecting cylinder 23, one end of which is connected to the first air outlet 21, and the other end is connected to the axial flow outlet 220. One end of the first connecting cylinder 23 can surround the axial flow outlet 220 to achieve a sealed connection with the fan 30. This improves the stability of the connection between the fan 30 and the air collecting hood 20, thereby improving the overall stability of the ventilation structure of the pad.

[0043] In practical applications, such as Figure 2 and Figure 3 As shown, the ventilation structure of the mat also includes a second connecting cylinder 24, which is bent and connected at one end to the second air outlet 22 and at the other end to the centrifugal air outlet 230.

[0044] The opening direction of the centrifugal air outlet 230 is perpendicular to the depth direction of the ventilation hole 11, and the two sections of the second connecting cylinder 24 are also perpendicular to each other. One end of the second connecting cylinder 24 can surround the centrifugal air outlet 230 to achieve a sealed connection with the fan 30. This improves the stability of the connection between the fan 30 and the air collection hood 20, thereby improving the overall stability of the ventilation structure of the pad.

[0045] The second surface of the pad 10 is provided with a recessed groove, and the air collecting hood 20 is disposed in the recessed groove. The recessed groove can store and hide the air collecting hood 20, thereby reducing the space occupied by the air collecting hood 20 between the pad 10 and the fan 30, and reducing the overall height of the pad ventilation structure.

[0046] The ventilation structure of the mat also includes a filter screen, which is located at one end of the ventilation hole 11 near the first surface of the mat 10. The filter screen prevents debris such as lint from falling from the ventilation hole 11 into the area below the mat 10, thus preventing the ventilation hole 11 from becoming clogged, and also prevents debris such as lint from entering the fan 30. By placing the filter screen near the first surface of the mat 10, debris such as lint can be intercepted near the first surface of the mat 10, making it easier for the user to clean and thus improving the ease of cleaning the mat ventilation structure.

[0047] For example, such as Figure 5 and Figure 6 As shown, the outer end of each axial flow blade 130 is inserted into the inner ends of the plurality of centrifugal blades 140. This increases the connection area between the axial flow blade 130 and the centrifugal blades 140, thereby improving the connection strength between the axial flow blade 130 and the plurality of centrifugal blades 140. Simultaneously, since the outer end of the axial flow blade 130 is inserted into the plurality of centrifugal blades 140, the radial flow guiding effect of the axial flow blade 130 on the plurality of centrifugal blades 140 is further enhanced.

[0048] For example, such as Figure 5 and Figure 6 As shown, each centrifugal blade 140 consists of an air inlet section 141 and an air outlet section 142. The air outlet section 142 is connected to the side of the air inlet section 141 away from the hub 110. The walls of the multiple air outlet sections 142 on the same side of the hub 110 in the axial direction are all connected to the connecting ring 120. The outer end of each axial flow blade 130 is inserted into the multiple air inlet sections 141 and is arranged adjacent to or connected to the inner peripheral wall of the connecting ring 120.

[0049] In this embodiment, it is understood that when the impeller 100 rotates, the airflow flows radially from the hub 110 into the inlet section 141 of the centrifugal blade 140 and flows out through the outlet section 142. By connecting the walls of the multiple outlet sections 142 on the same side of the hub 110 in the axial direction to the connecting ring 120, and inserting the outer end of each axial blade 130 into the multiple inlet sections 141 and being arranged adjacent to or connected to the inner peripheral wall of the connecting ring 120, the projection of the connecting ring 120 and the axial blade 130 on the hub 110 in the axial direction can cover the multiple centrifugal blades 140 connected to the axial blade 130. Therefore, the connecting ring 120 and the axial blade 130 effectively block the multiple centrifugal blades 140 from being projected onto the axial blade 130. The entire sidewall (axial leeward side) in the airflow direction is designed so that axially entering airflow does not escape axially through the gaps between the multiple centrifugal blades 140 connected to the axial blades 130. This greatly reduces airflow escape at the centrifugal blades 140, ensuring that the airflow entering the impeller 100 only flows axially out through the gaps between the multiple axial blades 130 and radially into the multiple centrifugal blades 140. This makes the axial and radial airflow more concentrated, thereby greatly improving the overall axial and radial airflow performance of the impeller 100. In addition, the windward side of the axial blades 130 can uniformly and without loss guide the airflow into the multiple centrifugal blades 140 connected to them, reducing wind loss and increasing airflow volume.

[0050] For example, such as Figure 5 and Figure 6 As shown, in the radial direction of the hub 110, the length of the outlet section 142 is greater than the length of the inlet section 141. If the inlet section 141 is too long, the distance between the inner peripheral wall of the centrifugal blade 140 and the outer peripheral wall of the hub 110 will be small, resulting in a narrower air outlet duct for the axial flow blades 130 of the impeller 100, which will reduce the axial airflow. Therefore, making the length of the outlet section 142 greater than the length of the inlet section 141 ensures a suitable distance between the inner peripheral wall of the centrifugal blade 140 and the outer peripheral wall of the hub 110, thus guaranteeing the axial airflow and airflow effect of the multiple axial flow blades 130 of the impeller 100.

[0051] For example, such as Figure 5 and Figure 6 As shown, the connecting ring 120 is connected to the distal ends of the multiple air outlet sections 142 located in the air outlet direction of the axial flow blades 130. This prevents the connecting ring 120 from obstructing axial airflow and affecting the airflow volume. Furthermore, the connecting ring 120 can also block the distal ends of the multiple centrifugal blades 140 in the axial direction of the hub 110, preventing airflow from axially exiting through the gaps between the multiple centrifugal blades 140. Consequently, most of the airflow can flow radially into the multiple centrifugal blades 140.

[0052] In the radial direction of the hub 110, multiple air outlet sections 142 are inserted into the axial flow blades 130 with equal lengths. This ensures that the connection strength between the multiple centrifugal blades 140 and the axial flow blades 130 is consistent, preventing partial damage or breakage. It also makes the airflow guidance of the axial flow blades 130 and the air outlet of the multiple centrifugal blades 140 more uniform and smooth.

[0053] The ratio of the distance between the outer peripheral wall of the hub 110 and the inner peripheral wall of the plurality of centrifugal blades 140 to the length of the centrifugal blades 140 in the radial direction of the hub 110 is greater than or equal to 0.8 and less than or equal to 1.2. Specifically, the ratio of the distance between the outer peripheral wall of the hub 110 and the inner peripheral wall of the plurality of centrifugal blades 140 to the length of the centrifugal blades 140 in the radial direction of the hub 110 is 0.8, 0.9, 1.0, 1.05, 1.1, 1.2, etc.

[0054] The ratio of the distance between the outer peripheral wall of the hub 110 and the inner peripheral wall of the multiple centrifugal blades 140 to the length of the centrifugal blades 140 in the radial direction of the hub 110 is greater than or equal to 0.8 and less than or equal to 1.2. This ensures that the width of the air duct corresponding to the centrifugal blades 140 and the air duct corresponding to the axial flow blades 130 are approximately equal, so that the difference between the axial airflow and radial airflow of the entire impeller 100 is not too large, thereby improving the overall airflow effect of the impeller 100.

[0055] In the axial direction of the hub 110, the width of the centrifugal blade 140 is greater than or equal to the width of the axial blade 130, and in the radial direction of the hub 110, the axial blade 130 is positioned directly opposite the multiple centrifugal blades 140. This avoids the axial blade 130 protruding from the centrifugal blade 140 in the axial direction of the hub 110, preventing accidental damage, and ensures the overall consistency of the entire wind turbine 100.

[0056] This utility model also proposes a car seat, which includes a cushion ventilation structure. The specific structure of the cushion ventilation structure is as described in the above embodiments. Since this car seat adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The cushion 10 of the cushion ventilation structure is at least one of the seat cushion and the backrest cushion of the car seat.

[0057] This utility model also proposes a bed, which includes a mattress ventilation structure. The specific structure of the mattress ventilation structure is as described in the above embodiments. Since this bed adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The mattress 10 of the mattress ventilation structure is the mattress of the bed.

[0058] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A ventilation structure for a mattress, characterized in that, include: A pad having a first surface and a second surface arranged opposite to each other, and the pad having a plurality of ventilation holes, the two ends of each ventilation hole penetrating the first surface and the second surface of the pad, respectively; A fan, comprising a volute, a motor, and a rotor, wherein the rotor comprises a hub, a connecting ring, multiple axial blades, and multiple centrifugal blades; Multiple axial flow blades are circumferentially connected to the outer peripheral wall of the hub; The plurality of centrifugal blades are arranged at intervals around the outer periphery of the hub and are spaced apart from the outer peripheral wall of the hub; The connecting ring is disposed around the outer periphery of the plurality of axial flow blades and connects the outer ends of the plurality of centrifugal blades away from the hub; The outer end of each of the axial flow blades is fixedly connected to the inner end of a plurality of centrifugal blades to guide the airflow radially along the hub to the plurality of centrifugal blades. The impeller is installed inside the volute, which has an air inlet, an axial flow outlet, and a centrifugal outlet. The air inlet corresponds to the air inlet side of the axial flow blades, the axial flow outlet corresponds to the air outlet side of the axial flow blades, and the centrifugal outlet corresponds to the air outlet side of the centrifugal blades. The motor drives the impeller to rotate, so as to guide the external airflow into the volute from the air inlet and blow it out through the axial flow outlet and the centrifugal outlet. The fan is located on one side of the second surface of the pad, and the axial flow outlet and the centrifugal flow outlet are both connected to the plurality of ventilation holes so that the airflow blown out by the axial flow outlet and the centrifugal flow outlet flows out of the first surface through the ventilation holes.

2. The ventilation structure of the mat as described in claim 1, characterized in that, The ventilation structure of the mat also includes an air collecting hood, which is disposed on the second surface of the mat and covers the plurality of ventilation holes. The air collecting hood has a first air passage and a second air passage. The axial air outlet is connected to the first air passage, and the centrifugal air outlet is connected to the second air passage.

3. The ventilation structure of the mat as described in claim 2, characterized in that, The axial flow outlet faces the air collecting hood, and the ventilation structure of the pad also includes a first connecting cylinder, one end of which is connected to the first air outlet and the other end of which is connected to the axial flow outlet.

4. The ventilation structure of the mat as described in claim 3, characterized in that, The ventilation structure of the pad also includes a second connecting cylinder, which is bent and connected at one end to the second air inlet and at the other end to the centrifugal air outlet.

5. The ventilation structure of the mat as described in claim 1, characterized in that, The outer end of each of the axial flow blades is inserted into the inner ends of the plurality of centrifugal blades.

6. The ventilation structure of the mat as described in claim 5, characterized in that, Each centrifugal blade consists of an air inlet section and an air outlet section. The air outlet section is connected to the side of the air inlet section away from the hub. The walls of multiple air outlet sections on the same side of the hub in the axial direction are all connected to the connecting ring. The outer end of each axial flow blade is inserted into multiple air inlet sections and is disposed adjacent to or connected to the inner peripheral wall of the connecting ring.

7. The ventilation structure of the mat as described in claim 6, characterized in that, In the radial direction of the hub, the length of the air outlet section is greater than the length of the air inlet section.

8. The ventilation structure of the mat as described in claim 6, characterized in that, The connecting ring is connected to the far end of multiple air outlet sections located in the air outlet direction of the axial flow blades.

9. A car seat, characterized in that, Includes a cushion ventilation structure as described in any one of claims 1 to 8, wherein the cushion of the cushion ventilation structure is at least one of the seat cushion and backrest cushion of the automobile seat.

10. A bed, characterized in that, Includes a mattress ventilation structure as described in any one of claims 1 to 8, wherein the mattress of the mattress ventilation structure is the mattress of the bed.

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