A high-pressure, high-flow electric pump

Abstract

The present invention discloses a high-pressure, high-flow electric pump, which aims to address the shortcomings of many currently used electric pumps, which can only meet the single requirements of high-flow inflation or high-pressure inflation and have poor inflation effects. The invention includes: an upper air chamber, in which a centrifugal impeller is installed; a lower air chamber, in which a closed impeller is installed; a vortex air chamber; a motor, and the centrifugal impeller and the closed impeller are both installed on the motor output shaft; a transition flow channel is provided between the upper air chamber and the lower air chamber, and a drainage air channel is provided between the lower air chamber and the vortex air chamber, and the drainage air channel is arranged to be tilted downward in the circumferential direction. The high-pressure, high-flow electric pump of the present application can achieve stable high-pressure, high-flow inflation.

Description

Technical Field

[0001] The present invention relates to an inflatable device, and more particularly to a high-pressure and large-flow electric pump. Background Art

[0002] There are many inflatable products currently on the market. These products are deflated and stored when not in use, taking up little space and being easy to carry. When inflatable products are used, they are inflated and unfolded. Inflating inflatable products often requires the use of an air pump, either manual or electric. Manual pumps require no power and are more flexible, while electric pumps inflate quickly and require less effort. Initially, the internal pressure of an inflatable product is low, requiring rapid, high-flow inflation. Later, the internal pressure increases, requiring high-pressure inflation. However, many currently used electric pumps can only meet the single requirements of high-flow or high-pressure inflation, resulting in poor inflation results. Summary of the Invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides a high-pressure and high-flow electric pump, which can achieve stable high-pressure and high-flow inflation.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: a high-pressure and high-flow electric pump, comprising:

[0005] an upper air chamber in which a centrifugal impeller is installed;

[0006] a lower air chamber in which a closed impeller is mounted;

[0007] vortex air chamber;

[0008] The motor, centrifugal impeller and closed impeller are all installed on the motor output shaft;

[0009] A transition flow channel is arranged between the upper air chamber and the lower air chamber, a drainage air channel is arranged between the lower air chamber and the vortex air chamber, and the drainage air channel is arranged to be tilted downward in the circumferential direction.

[0010] A motor drives the centrifugal impeller and the enclosed impeller. The centrifugal impeller rotates in the upper chamber, generating a high flow rate, which is then fed into the lower chamber through a transition channel. The enclosed impeller operates in the lower chamber, supercharging the airflow. The supercharged airflow is then transported through the drainage channel into the vortex chamber, forming a vortex. Finally, it rushes out through the vortex, generating high pressure and significantly increasing the flow output. This high-pressure, high-flow electric pump can achieve stable high-pressure, high-flow inflation.

[0011] Preferably, the motor is installed in the vortex chamber.

[0012] The continuous flow of air in the vortex chamber can significantly reduce the heating problem of the motor and improve the output efficiency of the motor, while avoiding safety problems and hidden dangers, which can significantly improve the performance and service life of the product.

[0013] Preferably, an air inlet is provided in the middle of the upper air chamber, and an air outlet is provided in the middle of the bottom of the vortex air chamber.

[0014] The air inlet is arranged in the middle of the upper air chamber, so the air inlet is smooth. The center of the vortex air flow formed in the vortex air chamber is in the middle position, and the air outlet is arranged in the middle position of the vortex air chamber, so the air flow has a strong impact.

[0015] Preferably, the transition flow channel includes an inlet and an outlet, the inlet is arranged tangentially along the upper air chamber, and the outlet is arranged in the middle of the lower air chamber; an arc-shaped air channel is arranged between the inlet and the outlet.

[0016] The inlet is arranged tangentially along the upper air chamber to facilitate the airflow in the upper air chamber to be sent into the transition flow channel. The arc-shaped air channel between the inlet and the outlet guides the airflow into the middle of the lower air chamber and plays a guiding role.

[0017] Preferably, the air passage gradually increases in size from the inlet to the outlet.

[0018] Such an airway arrangement is less likely to cause obstruction to the airflow and is conducive to large-flow delivery.

[0019] Preferably, a plurality of drainage air ducts are evenly distributed circumferentially around the periphery of the closed impeller.

[0020] Several downward-inclined drainage air ducts are evenly distributed around the periphery of the closed impeller to facilitate the formation of vortices in the airflow and increase the air pressure.

[0021] Preferably, the centrifugal impeller includes a turntable and a plurality of centrifugal blades, which are evenly distributed circumferentially on the turntable surface. The centrifugal blades are arc-shaped, and a centrifugal channel is formed between two adjacent centrifugal blades. The width of the centrifugal channel gradually increases from the inside to the outside.

[0022] After the centrifugal impeller rotates, the air flow is thrown outward by centrifugal force, and the width of the arc-shaped centrifugal channel gradually increases from the inside to the outside, which is conducive to the outward throwing of the air flow.

[0023] Preferably, the closed impeller includes an upper closing plate and a lower closing plate, and a number of closed blades are evenly distributed circumferentially installed between the upper closing plate and the lower closing plate. The closed blades are arc-shaped, and an air outlet channel is formed between adjacent closed blades. The width of the air outlet channel gradually increases from the inside to the outside.

[0024] During the operation of the closed impeller, the air flow is thrown outward by centrifugal force. Since the air outlet channel is closed, it is beneficial to increase the air pressure.

[0025] Preferably, a pressure regulating baffle ring and a positioning spring are installed on the top of the lower air chamber, and the positioning spring positions the pressure regulating baffle ring. The inner wall of the pressure regulating baffle ring is arranged near the upper edge of the opening at the outer end of the air outlet channel, and the outer wall of the pressure regulating baffle ring is sealed and adapted to the inner wall of the lower air chamber; a pressure storage ring cavity is arranged on the top of the lower air chamber, and the pressure storage ring cavity is connected to the return joint, and a return air duct is arranged between the return joint and the vortex air chamber; a flow hole is arranged on the return joint, and a piston and a pre-tightening spring are arranged in the flow hole, and the pre-tightening spring abuts against the piston, and a plurality of flow grooves are arranged on the inner wall of the reflux joint, and the outer wall of the piston is sealed and adapted to the inner wall of the flow hole, and the piston is arranged near the front end of the flow groove.

[0026] In the initial stage of inflation, the air pressure inside the inflatable product is low, and the air pressure introduced into the return joint by the vortex chamber is insufficient to fully open the piston, that is, the airflow will not push the pressure regulating baffle ring to move at this time. In the later stage of inflation, the air pressure inside the inflatable product increases, and the air pressure inside the vortex chamber also increases. The air pressure introduced into the return joint by the vortex chamber opens the piston, and the airflow enters the pressure accumulator ring cavity through the flow holes and flow grooves. The increased air pressure in the pressure accumulator ring cavity pushes the pressure regulating baffle ring downward, and the area of ​​the opening at the outer end of the outlet channel blocked by the pressure regulating baffle ring increases, that is, the opening at the outer end of the outlet channel decreases, which is conducive to increasing the exhaust pressure of the closed impeller, thereby increasing the inflation pressure of the inflatable product and achieving high-pressure inflation in the later stage of the inflatable product.

[0027] Preferably, a positioning ring is provided on the upper part of the pressure regulating baffle ring, a sealing ring is provided on the lower part of the pressure regulating baffle ring, a positioning spring abuts against the positioning ring, and the pressure storage ring cavity is connected to the upper end face of the sealing ring.

[0028] The arrangement of the positioning ring and the sealing ring ensures the reliable installation of the pressure regulating retaining ring.

[0029] Compared with the prior art, the beneficial effects of the present invention are: (1) the high-pressure, high-flow electric pump of the present application can achieve stable high-pressure, high-flow inflation and accelerate the inflation speed; (2) one motor drives two impellers to operate, which is beneficial to reducing costs; (3) the motor is installed in the vortex air chamber, and the air flow flows continuously, which can greatly reduce the heating problem of the motor and improve the output efficiency of the motor, while avoiding safety problems and hidden dangers, and can greatly improve the performance and service life of the product; (4) the inflation pressure of the inflatable product can be increased in the later stage of inflation to ensure the inflation effect of the inflatable product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an exploded view of the present invention;

[0031] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0032] Figure 3 is a cross-sectional view of Example 1 of the present invention;

[0033] Figure 4is a cross-sectional view of Example 2 of the present invention;

[0034] Figure 5 1 is a schematic diagram of the reflux joint connection of Example 2 of the present invention;

[0035] In the figure: 1, upper air chamber, 2, centrifugal impeller, 3, lower air chamber, 4, closed impeller, 5, vortex air chamber, 6, motor, 7, transition flow channel, 8, drainage air duct, 9, air inlet, 10, air outlet, 11, inlet, 12, outlet, 13, air duct, 14, upper cover, 15, separator plate, 16, connecting cover, 17, vortex plate, 18, vortex cylinder, 19, convex ring, 20, convex rib, 21, centrifugal blade, 22, centrifugal channel, 23, upper closing plate, 24, Lower closing plate, 25, closing blade, 26, air outlet channel, 27, air inlet hole, 28, pressure regulating retaining ring, 29, positioning spring, 30, pressure storage ring cavity, 31, reflux joint, 32, reflux air duct, 33, convex strip, 34, reflux hole, 35, pipeline, 36, flow hole, 37, piston, 38, preload spring, 39, flow groove, 40, end cover, 41, spring seat, 42, positioning ring, 43, sealing ring, 44, ring groove, 45, limit ring, 46, mounting hole. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0037] Example 1: A high-pressure, high-flow electric pump (see attached Figure 1 To the attached Figure 3 ),include:

[0038] The upper air chamber 1 has a centrifugal impeller 2 installed therein; the upper air chamber is a centrifugal air chamber;

[0039] The lower air chamber 3 has a closed impeller 4 installed therein; the lower air chamber is an axial flow air chamber;

[0040] The vortex air chamber 5; the lower air chamber is arranged between the upper air chamber and the vortex air chamber;

[0041] Motor 6, centrifugal impeller and closed impeller are all installed on the motor output shaft; the motor is installed in the vortex air chamber;

[0042] A transition channel 7 is provided between the upper and lower air chambers, a drainage channel 8 is provided between the lower air chamber and the vortex air chamber, and the drainage channel is provided with an air inlet 9 in the middle of the upper air chamber and an air outlet 10 in the middle of the bottom of the vortex air chamber.

[0043] The transition flow channel includes an inlet 11 and an outlet 12. The inlet is arranged tangentially along the upper air chamber, and the outlet is located in the middle of the lower air chamber. An arc-shaped air channel 13 is provided between the inlet and outlet. The air channel gradually increases in size from the inlet to the outlet. Several drainage air channels are evenly distributed circumferentially around the periphery of the closed impeller.

[0044] The electric pump includes, from top to bottom, an upper cover 14, a separator plate 15, a connecting cover 16, a vortex plate 17, and a vortex cylinder 18. An upper air chamber is formed between the upper cover and the separator plate, a lower air chamber is formed between the connecting cover and the vortex plate, and a vortex air chamber is formed in the inner cavity of the vortex cylinder. The air inlet is arranged in the middle of the upper cover, and the air outlet is arranged at the bottom of the vortex cylinder. A convex ring 19 is arranged on the separator plate, the upper cover is sealed with the convex ring, the centrifugal impeller is installed in the convex ring, and the inlet is arranged on the side wall of the convex ring. The outlet is arranged in the middle position of the upper end of the connecting cover, and a convex rib 20 is arranged on the upper surface of the connecting cover. The upper end of the convex rib is sealed with the lower surface of the separator plate to form an air duct, and the end of the air duct passes through the upper surface of the separator plate and is connected to the inlet. The drainage air duct is arranged at the outer edge of the vortex plate, and the outer edge of the closed impeller is arranged close to the drainage air duct. The motor is fixedly mounted on the lower surface of the vortex plate.

[0045] The centrifugal impeller includes a turntable and a plurality of centrifugal blades 21. The centrifugal blades are evenly distributed circumferentially on the surface of the turntable. The centrifugal blades have an arc-shaped structure. The centrifugal blades are inclined from the inner end to the outer end to deviate from the radial direction. A centrifugal channel 22 is formed between adjacent centrifugal blades, and the width of the centrifugal channel gradually increases from the inside to the outside.

[0046] The enclosed impeller comprises an upper closure plate 23 and a lower closure plate 24. Several enclosed blades 25 are evenly distributed circumferentially between the upper and lower closure plates. The enclosed blades are curved and tilted away from the radial direction from the inner end to the outer end. An outlet channel 26 is formed between adjacent enclosed blades, and the width of the outlet channel gradually increases from the inside out. An air inlet hole 27 is located in the middle of the upper closure plate, with the edge of the inlet hole tilted upward to guide the air flow. The upper closure plate is tilted downward from the middle to the edge, and the gap between the upper and lower closure plates gradually decreases from the inside out.

[0047] A motor drives the centrifugal impeller and the enclosed impeller. The centrifugal impeller rotates in the upper chamber, generating a high flow rate, which is then fed into the lower chamber through a transition channel. The enclosed impeller operates in the lower chamber, supercharging the airflow. The supercharged airflow is then transported through the drainage channel into the vortex chamber, forming a vortex. Finally, it rushes out through the vortex, generating high pressure and significantly increasing the flow output. This high-pressure, high-flow electric pump can achieve stable high-pressure, high-flow inflation.

[0048] Example 2: A high-pressure, high-flow electric pump (see attached Figure 4 , Attachment Figure 5), its structure is similar to that of Example 1, the main difference being that in this embodiment, a pressure regulating baffle ring 28 and a positioning spring 29 are installed on the top of the lower air chamber, the pressure regulating baffle ring can be raised and lowered, the positioning spring positions the pressure regulating baffle ring, the inner wall of the pressure regulating baffle ring is arranged close to the upper edge of the opening at the outer end of the air outlet channel, and the outer wall of the pressure regulating baffle ring is sealed and adapted to the inner wall of the lower air chamber; a pressure storage ring cavity 30 is arranged on the top of the lower air chamber, the pressure storage ring cavity is connected to the return joint 31, and a return air duct 32 is arranged between the return joint and the vortex air chamber. A convex strip 33 is arranged on the outer wall of the vortex cylinder, and a return hole 34 is arranged in the convex strip, and the end of the return hole extends to the corresponding position of the bottom of the vortex cylinder and the air outlet. The convex strip is L-shaped, with one part of the convex strip placed on the bottom surface of the vortex cylinder and the other part of the convex strip placed on the side wall of the vortex cylinder. A pipe 35 is connected between the convex strip and the return joint, and the convex strip and the pipe together constitute a return air duct.

[0049] A flow hole 36 is provided on the reflux joint, a piston 37 and a preload spring 38 are provided in the flow hole, the preload spring abuts against the piston, a plurality of flow grooves 39 are provided on the inner wall of the reflux joint, the outer wall of the piston is sealed and adapted to the inner wall of the flow hole, and the piston is installed near the front end of the flow groove. The end of the reflux joint is connected to the end cover 40, the pipeline is connected to the end cover, the inner diameter of the end cover is smaller than the inner diameter of the flow hole, one end of the piston abuts against the end cover, a spring seat 41 is provided in the flow hole, the spring seat and the inner wall of the flow hole are connected by a plurality of connecting ribs, and one end of the spring is connected to the spring seat. A positioning ring 42 is provided on the upper part of the pressure regulating retaining ring, and a sealing ring 43 is provided on the lower part of the pressure regulating retaining ring. The positioning spring abuts against the positioning ring, and the pressure storage ring cavity is connected to the upper end face of the sealing ring. A ring groove 44 is provided on the connecting cover corresponding to the pressure-regulating retaining ring. The upper portion of the pressure-regulating retaining ring is mounted in the ring groove. A retaining ring 45 is connected to the open end of the ring groove. A positioning spring abuts between the positioning ring and the retaining ring. The upper end face of the sealing ring abuts the connecting cover. A mounting hole 46 is provided on the connecting cover, communicating with the pressure-accumulating ring cavity. One end of the return connector is tightly mounted in the mounting hole.

[0050] In the initial stage of inflation, the air pressure inside the inflatable product is low, and the air pressure introduced into the return joint by the vortex chamber is insufficient to fully open the piston, that is, the airflow will not push the pressure regulating baffle ring to move at this time. In the later stage of inflation, the air pressure inside the inflatable product increases, and the air pressure inside the vortex chamber also increases. The air pressure introduced into the return joint by the vortex chamber opens the piston, and the airflow enters the pressure accumulator ring cavity through the flow holes and flow grooves. The increased air pressure in the pressure accumulator ring cavity pushes the pressure regulating baffle ring downward, and the area of ​​the opening at the outer end of the outlet channel blocked by the pressure regulating baffle ring increases, that is, the opening at the outer end of the outlet channel decreases, which is conducive to increasing the exhaust pressure of the closed impeller, thereby increasing the inflation pressure of the inflatable product and achieving high-pressure inflation in the later stage of the inflatable product.

[0051] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A high-pressure, high-flow electric pump, characterized in that: include: an upper air chamber in which a centrifugal impeller is installed; a lower air chamber in which a closed impeller is mounted; vortex air chamber; The motor, centrifugal impeller and closed impeller are all installed on the motor output shaft; A transition flow channel is provided between the upper air chamber and the lower air chamber, and a drainage air channel is provided between the lower air chamber and the vortex air chamber, and the drainage air channel is provided with a circumferential downward inclination; The closed impeller includes an upper closing plate and a lower closing plate, and a number of closed blades are evenly distributed circumferentially installed between the upper closing plate and the lower closing plate; an air outlet channel is formed between two adjacent closed blades; a pressure regulating baffle ring and a positioning spring are installed on the top of the lower air chamber, and the positioning spring positions the pressure regulating baffle ring, and the inner wall of the pressure regulating baffle ring is arranged close to the upper edge of the opening at the outer end of the air outlet channel, and the outer wall of the pressure regulating baffle ring is sealed and adapted to the inner wall of the lower air chamber; a pressure storage ring cavity is arranged on the top of the lower air chamber, and the pressure storage ring cavity is connected to the return joint, and a return air channel is arranged between the return joint and the vortex air chamber; a flow hole is arranged on the return joint, and a piston and a pre-tightening spring are arranged in the flow hole, and the pre-tightening spring abuts against the piston, and a number of flow grooves are arranged on the inner wall of the reflux joint, and the outer wall of the piston is sealed and adapted to the inner wall of the flow hole, and the piston is arranged near the front end of the flow groove.

2. A high-pressure, high-flow electric pump according to claim 1, characterized in that: The motor is installed in the vortex air chamber.

3. A high-pressure, high-flow electric pump according to claim 1, characterized in that: An air inlet is arranged in the middle of the upper air chamber, and an air outlet is arranged in the middle of the bottom of the vortex air chamber.

4. A high-pressure, high-flow electric pump according to claim 1, characterized in that the transition The flow channel comprises an inlet and an outlet, wherein the inlet is arranged tangentially along the upper air chamber and the outlet is arranged in the middle of the lower air chamber; an arc-shaped air channel is arranged between the inlet and the outlet.

5. A high-pressure, high-flow electric pump according to claim 4, characterized in that: The airway gradually increases in size from the inlet to the outlet.

6. A high-pressure, high-flow electric pump according to claim 1, characterized in that: A plurality of drainage air passages are evenly distributed circumferentially around the periphery of the closed impeller.

7. A high-pressure, high-flow electric pump according to claim 1, characterized in that: The centrifugal impeller includes a turntable and a plurality of centrifugal blades. The centrifugal blades are evenly distributed circumferentially on the surface of the turntable. The centrifugal blades are arc-shaped. A centrifugal channel is formed between two adjacent centrifugal blades. The width of the centrifugal channel gradually increases from the inside to the outside.

8. A high-pressure, high-flow electric pump according to any one of claims 1 to 7, characterized in that: The closed blades are in an arc-shaped structure, and the width of the air outlet channel gradually increases from the inside to the outside.

9. A high-pressure, high-flow electric pump according to claim 1, characterized in that: A positioning ring is provided on the upper part of the pressure regulating baffle ring, a sealing ring is provided on the lower part of the pressure regulating baffle ring, a positioning spring abuts against the positioning ring, and the pressure storage ring cavity is communicated with the upper end face of the sealing ring.

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