An embedded electric air pump

Abstract

This utility model relates to an embedded electric air pump, including an outer box, inside which are installed a centrifugal fan-type inflation structure driven by a first motor and a piston-type inflation structure driven by a second motor. Its key feature is that it further includes a connector with a transition air passage. The connector also has a first air inlet connected to the air outlet of the centrifugal fan-type inflation structure and a second air inlet connected to the air outlet of the piston-type inflation structure. Both the first and second air inlets are connected to the transition air passage. The top surface of the outer box has an inflation interface and an exhaust interface. The inflation interface is connected to the transition air passage, and the exhaust interface is connected to the air inlet of the centrifugal fan-type inflation structure. By connecting the air outlets of the two inflation structures together in a single interface, sharing a common transition air passage, the entire structure becomes more compact. It can quickly inflate low-pressure components (such as the main body of a large inflatable boat) as well as high-pressure components (SUP, etc.).

Description

Technical Field

[0001] This utility model relates to an air pump, and more particularly to an embedded electric air pump. This embedded air pump is generally used in large inflatable boats and yachts, but this is not a limitation. Background Technology

[0002] Embedded electric pumps for inflating large inflatable boats have been available for over twenty years. These pumps inflate not only the main body of the boat but also accessories such as life rings and inflatable mattresses. These pumps operate at high flow rates but low pressure. In recent years, many new inflatable accessories have appeared on the market for use on inflatable boats and yachts. Yachts now feature inflatable floats, inflatable mattresses, life rings, inflatable jetties, and inflatable slides. Some of these accessories are low-pressure, similar to the main body of the large inflatable boat. However, others require much higher pressure, potentially 5-7 times higher than the boat itself. Therefore, the large inflatable boat and yacht industry needs an electric air pump that can quickly inflate the main body of the boat, these low-pressure accessories, and other high-pressure accessories. Since this product is intended for large inflatable boats and yachts categorized as luxury items, users do not want a separate pump but rather a compact product that is integrated into the boat and becomes one with it. Making better use of space on board is crucial.

[0003] Currently, there are compact air pumps on the market that can quickly inflate low-pressure products, suitable for inflating large inflatable boats or low-pressure components, but not for inflating high-pressure components like SUP (Super Paddle Boats). There are also compact air pumps that can reach high pressure, capable of inflating high-pressure components like SUP, but they are slow and cannot be used to inflate large inflatable boats. Finally, there are air pumps that can quickly inflate both low-pressure and high-pressure products, but these are bulky, making it difficult to embed them into the hull. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an embedded electric air pump with a reasonable structure and small size, which is in view of the above-mentioned existing technology. This electric air pump can quickly inflate low-pressure parts (such as the main body of a large rubber boat) and high-pressure parts (SUP, etc.).

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an embedded electric air pump, including an outer box, in which a centrifugal fan-type inflation structure driven by a first motor and a piston-type inflation structure driven by a second motor are installed. The outlet end of the centrifugal fan-type inflation structure is provided with a first one-way valve that only allows gas to flow out, and the outlet end of the piston-type inflation structure is provided with a second one-way valve that only allows gas to flow out. The feature is that it also includes a connector with a transition air passage. The connector also has a first air inlet connected to the outlet end of the centrifugal fan-type inflation structure and a second air inlet connected to the outlet end of the piston-type inflation structure. Both the first air inlet and the second air inlet are connected to the transition air passage. The top surface of the outer box is provided with an inflation interface and an exhaust interface. The inflation interface is connected to the transition air passage, and the exhaust interface is connected to the air inlet end of the centrifugal fan-type inflation structure.

[0006] To improve air exchange between the inside and outside of the outer casing, a ventilation grille is provided on the top surface of the outer casing as an improvement. The ventilation grille ensures that air enters the outer casing, is drawn in, and is then forced out by the piston-type inflation structure, while also cooling the second motor.

[0007] Because this product is used on large inflatable boats and yachts, higher waterproofing requirements are necessary. To further improve waterproofing, the outer box features a hinged lid on its top surface. The inner end face of the lid has a sealing ring that forms a seal with the top surface of the outer box. When closed, the lid covers the inflation port, exhaust port, and vent grille. A detachable and secure connection structure exists between the lid and the outer box. When not in use, the lid covers the inflation port, exhaust port, and vent grille, and the sealing ring prevents water from entering the outer box through these points and affecting its use.

[0008] To ensure a secure fit between the lid and the outer box, the aforementioned connection structure is a magnetic one. Three sets of spaced magnets are placed on both the outer box and the lid to ensure a strong closing force and even distribution of force along the entire length. Alternatively, other existing methods such as snap-fits or latches can also be used.

[0009] As an improvement, the lid is hinged to the outer box using three pins: one pin on each side and one pin in the middle. Because the lid is quite long, relying solely on pins on the sides makes the middle of the lid prone to warping, affecting the sealing effect.

[0010] Preferably, the top surface of the outer box is equipped with a buffer, which cushions the process of the lid adhering to the top surface of the outer box. Because the magnetic force is very strong, there is a risk of the customer squeezing their fingers when closing, so we installed a buffer.

[0011] For ease of assembly, the outer box consists of two parts, a bottom box and a top box, which are joined together. The top box forms the top surface of the outer box, and the periphery of the top box has an annular support wall that protrudes outward from the bottom box.

[0012] Compared with existing technologies, the advantages of this utility model are as follows: This electric air pump uses a centrifugal fan-type inflation structure with a large flow rate and a piston-type inflation structure with high pressure. The centrifugal fan-type inflation structure provides a large flow rate but low pressure. This inflation structure alone can quickly inflate a large inflatable boat to the pressure required for the boat, without needing to activate the piston-type inflation structure. When high-pressure products are needed, such as SUPs, the first motor needs to work first, followed by the second motor. When the pressure of the first motor approaches its maximum pressure, the air pump's PCB will stop it and immediately start the second motor. This electric air pump connects the outlets of the two inflation structures through a connector, integrating them into a single interface and sharing a common transition air passage, making the entire structure more compact. The inflation and exhaust interfaces are exposed on the top surface of the outer box, facilitating the mounting of the outer box onto a tabletop. The exhaust interface connects to the air inlet of the centrifugal fan-type inflation structure, enabling rapid exhaust. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention after the lid has been removed.

[0015] Figure 3 This is a cross-sectional view along the direction of the centrifugal fan-type air-filling structure of an embodiment of the present invention;

[0016] Figure 4 This is a cross-sectional view along the direction of the piston-type inflation structure of an embodiment of the present invention;

[0017] Figure 5 This is a perspective view of the present invention after the bottom box has been removed;

[0018] Figure 6 This is a three-dimensional schematic diagram of the connecting member in the embodiment of this utility model. Figure 1 ;

[0019] Figure 7 This is a three-dimensional schematic diagram of the connecting member in the embodiment of this utility model. Figure 2 . Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-7The figure shown is a preferred embodiment of the air pump inflation system of this utility model.

[0022] An embedded electric air pump includes an outer casing 1. Inside the outer casing 1 are a centrifugal fan-type inflation structure 2 driven by a first motor 4a and a piston-type inflation structure 3 driven by a second motor 4b. The centrifugal fan-type inflation structure 2 has a first one-way valve 5a at its outlet, allowing only gas to flow out. The piston-type inflation structure 3 has a second one-way valve 5b at its outlet, also allowing only gas to flow out. The centrifugal fan-type inflation structure 2 is a conventional centrifugal fan structure. The piston-type inflation structure 3 preferably adopts the Chinese utility model patent "Electric Air Pump Facilitating Heat Dissipation" (patent number 201821292664.X), but other existing piston inflation structures can also be used.

[0023] It also includes a connector 6 with a transition air passage 63. The connector 6 also has a first air inlet 61 that is connected to the air outlet of the centrifugal fan-type inflation structure 2 and a second air inlet 62 that is connected to the air outlet of the piston-type inflation structure 3. Both the first air inlet 61 and the second air inlet 62 are connected to the transition air passage 63. The top surface of the outer box 1 is provided with an inflation interface 1a and an exhaust interface 1b. The inflation interface 1a is connected to the transition air passage 63, and the exhaust interface 1b is connected to the air inlet of the centrifugal fan-type inflation structure 2.

[0024] The top surface of the outer box 1 is provided with a ventilation grille 1c.

[0025] A lid 7 is hinged to the top surface of the outer box 1. The lid 7 is hinged to the outer box 1 by three pins 8. The left and right sides of the lid 7 are each hinged to the outer box 1 by a pin 8, and the middle of the lid 7 is hinged to the outer box 1 by a pin 8. The inner end face of the lid 7 has a sealing ring 7a that forms a seal with the top surface of the outer box 1. When closed, the lid 7 covers the inflation port 1a, the exhaust port 1b, and the ventilation grille 1c. A detachable and fixed connection structure is provided between the lid 7 and the outer box 1. The connection structure is a magnetic structure, with three sets of spaced magnets on both the outer box 1 and the lid. A buffer 9 is provided on the top surface of the outer box 1, which cushions the process of the lid 7 adhering to the top surface of the outer box 1.

[0026] The outer box 1 is formed by two parts, a bottom box 11 and a top box 12, which are joined together. The top box 12 forms the top surface of the outer box 1, and the periphery of the top box 12 has an annular resting wall 121 that protrudes outward from the bottom box 11.

[0027] The working principle and process of this electric air pump are as follows: The centrifugal fan-type inflation structure 2 provides high airflow but low pressure. This inflation structure alone can quickly inflate a large inflatable boat to the required pressure without activating the piston-type inflation structure 3. A connector and air hose are attached to the inflation port 1a and connected to the inflatable product. When the first motor 4a operates, air is drawn in from the exhaust port 1b, enters the inlet of the centrifugal fan-type inflation structure 2, is compressed by the first motor 4a, and is sent to the outlet of the centrifugal fan-type inflation structure 2. The first one-way valve 5a opens, and air is finally delivered to the inflatable product through the transition air passage 63 from the inflation port 1a. The cooling of the first motor 4a is achieved by the passing air.

[0028] When high inflation pressure is required for products such as SUP (Super Upgrade), the first motor 4a needs to be activated first, followed by the second motor 4b. Air is drawn in through the vent grille 1c, compressed by the piston at the inlet end of the piston-type inflation structure 3, and then sent to the outlet end of the piston-type inflation structure 3. The second one-way valve 5b opens, and the air is finally delivered into the inflated product through the transition air passage 63 and the inflation port 1a. The specific working process of the piston-type inflation structure 3 can be found in existing technologies.

[0029] This electric air pump connects the air outlets of the two inflation structures through connector 6, integrating them into one interface and sharing a transition air passage 63, making the entire structure more compact; and the inflation interface 1a and the exhaust interface 1b are exposed on the top surface of the outer box 1, making it convenient for the outer box to be installed on the table; the exhaust interface is connected to the air inlet of the centrifugal fan inflation structure, enabling rapid exhaust.

[0030] The deflation process simply involves connecting the inflatable product to the deflation port 1b via a connector and air hose. The deflation process is the reverse of the inflation process.

[0031] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "inner," "outer," "upper," and "lower," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. An embedded electric air pump, comprising an outer casing (1), wherein a centrifugal fan-type inflation structure (2) driven by a first motor (4a) and a piston-type inflation structure (3) driven by a second motor (4b) are installed inside the outer casing (1), wherein the centrifugal fan-type inflation structure (2) is provided with a first one-way valve (5a) that only allows gas to flow out at its outlet end, and the piston-type inflation structure (3) is provided with a second one-way valve (5b) that only allows gas to flow out at its outlet end; characterized in that: It also includes a connector (6) with a transition air passage (63), the connector (6) having a first air inlet (61) connected to the air outlet of the centrifugal fan-type inflation structure (2) and a second air inlet (62) connected to the air outlet of the piston-type inflation structure (3). The first air inlet (61) and the second air inlet (62) are both connected to the transition air passage (63). The top surface of the outer box (1) is provided with an inflation interface (1a) and an exhaust interface (1b). The inflation interface (1a) is connected to the transition air passage (63), and the exhaust interface (1b) is connected to the air inlet of the centrifugal fan-type inflation structure (2).

2. The in-line electric motor driven air pump of claim 1 wherein: The top surface of the outer box (1) is provided with a ventilation grille (1c).

3. The in-line electric motor driven air pump of claim 2 wherein: The top surface of the outer box (1) is hinged with a lid (7). The inner end face of the lid (7) is provided with a sealing ring (7a) that forms a seal with the top surface of the outer box (1). When the lid (7) is closed, it covers the inflation port (1a), the exhaust port (1b), and the ventilation grille (1c). The lid (7) and the outer box (1) are provided with a connecting structure that allows them to be detached and fixed together.

4. The in-line electric motor driven air pump of claim 3 wherein: The combined structure is a magnetic structure, and three sets of magnets are placed on the outer box (1) and the box cover (7) at intervals.

5. The in-line electric motor driven air pump of claim 4 wherein: The lid (7) is hinged to the outer box (1) by three pins (8). The left and right sides of the lid (7) are each hinged to the outer box (1) by one of the pins (8). The middle part of the lid (7) is hinged to the outer box (1) by one of the pins (8).

6. The in-line electric motor driven air pump of claim 4 wherein: The top surface of the outer box (1) is provided with a buffer (9), which buffers the process of the box cover (7) adsorbing onto the top surface of the outer box (1).

7. The in-line electric motor driven gas pump of claim 1 wherein: The outer box (1) is formed by two parts, a bottom box (11) and a top box (12), which are joined together. The top box (12) forms the top surface of the outer box (1), and the periphery of the top box (12) has an annular shelf wall (121) that protrudes outward from the bottom box (11).

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