Electric air pump

Abstract

The present invention relates to the technical field of air pumps, and in particular to an electric air pump to alleviate the problems of high outlet temperature and high outer shell temperature of existing air pumps. It comprises: a pump housing and a heat dissipation motor and a fan motor arranged in sequence along the axial direction in the pump housing; the air pump has an arc-shaped heat dissipation path, the inlet of the heat dissipation path is arranged at the first end in the axial direction of the air pump, and the outlet of the heat dissipation path is arranged at the outer peripheral wall of the air pump; the air pump has an arc-shaped inflation path, the inlet of the inflation path is arranged at the second end in the axial direction of the air pump, and the outlet of the inflation path is arranged at the outer peripheral wall of the air pump; the first end and the second end are respectively the two ends in the axial direction of the air pump. The present invention effectively alleviates the problems of high outlet temperature and high outer shell temperature of existing air pumps.

Description

Technical Field

[0001] The present invention relates to the technical field of air pumps, and in particular to an electric air pump. Background Art

[0002] The electric air pump is an air-inflating device. The existing air pump takes in air from the air inlet at the rear end of the air pump, passes through the multi-layer fan motor inside the air pump, and then discharges air from the air outlet at the front end. The air pump will generate high heat energy when working for a long time. The heat energy not only causes the temperature of the multi-layer fan motor itself to be too high, but also causes the outlet temperature of the air pump and the shell temperature to be high. Summary of the invention

[0003] The object of the present invention is to provide an electric air pump to alleviate the problems of high air outlet temperature and high shell temperature of the existing air pump.

[0004] In order to alleviate the above technical problems, the technical solution provided by the present invention is:

[0005] In one aspect, the present invention provides an air pump.

[0006] It comprises: a pump housing, and a heat dissipation motor and a fan motor which are arranged in sequence along the axis direction and are arranged in the pump housing;

[0007] The air pump has an arc-shaped heat dissipation path, the inlet of the heat dissipation path is arranged at the first end in the axial direction of the air pump, and the outlet of the heat dissipation path is arranged on the outer peripheral wall of the air pump;

[0008] The air pump has an arc-shaped air-inflating path, the inlet of the air-inflating path is arranged at the second end of the axial direction of the air pump, and the outlet of the air-inflating path is arranged at the outer peripheral wall of the air pump;

[0009] The first end and the second end are two ends of the air pump in the axial direction.

[0010] Furthermore,

[0011] The first end of the pump housing is provided with a heat dissipation air inlet, and the outer peripheral wall of the pump housing is provided with a heat dissipation air outlet;

[0012] When the heat dissipation motor is in a startup state, external cooling medium flows to the fan motor through the heat dissipation air inlet and then is discharged from the heat dissipation air outlet.

[0013] Furthermore,

[0014] The second end of the pump housing is provided with an air filling inlet, the outer peripheral wall of the pump housing is provided with an air filling outlet, and the air filling outlet is separated from the heat dissipation outlet hole;

[0015] When the fan motor is started, the inflation medium flows toward the fan motor through the inflation inlet and then is discharged from the inflation outlet.

[0016] Furthermore,

[0017] The pump housing comprises a first half shell and a second half shell, wherein the first half shell and the second half shell are assembled on the central axis surface of the air pump;

[0018] The heat dissipation outlet is arranged on the first half shell and / or the second half shell, and the air charging outlet is arranged on the first half shell or the second half shell.

[0019] Furthermore,

[0020] An isolation component is disposed inside the pump housing. The isolation component is disposed around the heat dissipation motor and forms an air duct. The air duct extends from the heat dissipation air inlet to the heat dissipation air outlet.

[0021] Furthermore,

[0022] The isolation member includes a first guide area and a second guide area;

[0023] The first guide area extends from the heat dissipation air inlet toward the fan motor, and the heat dissipation motor is arranged in the first guide area;

[0024] The second guide area is arranged between the heat dissipation motor and the fan motor, and one side of the second guide area is connected to the first guide area, and the other side of the second guide area is connected to the heat dissipation outlet.

[0025] Furthermore,

[0026] The first guide area includes a first guide plate and a second guide plate symmetrically arranged on both sides of the axis of the heat dissipation motor, and a first air duct is formed between the first guide plate and the heat dissipation motor, and between the second guide plate and the heat dissipation motor.

[0027] Furthermore,

[0028] The second guide area includes a first flow dividing mechanism and a second flow dividing mechanism which are symmetrically arranged on both sides of the air pump axis and gradually separated from the direction from the heat dissipation motor to the fan motor;

[0029] A second air duct is formed inside the first flow diversion mechanism and the second flow diversion mechanism, and both ends of the two second air ducts are respectively connected to the first air duct and the heat dissipation outlet.

[0030] Furthermore,

[0031] The first flow dividing mechanism comprises a first curved plate and a second curved plate spaced apart from each other; the second flow dividing mechanism comprises a third curved plate and a fourth curved plate spaced apart from each other;

[0032] A side of the first curved plate adjacent to the heat dissipation motor is connected to the first guide plate, a side of the second curved plate adjacent to the heat dissipation motor is connected to the third curved plate, and a side of the fourth curved plate adjacent to the heat dissipation motor is connected to the second guide plate;

[0033] The first curved plate and the second curved plate are connected at one side adjacent to the fan blade motor; the third curved plate and the fourth curved plate are connected at one side adjacent to the fan blade motor;

[0034] A second air duct is formed between the first curved plate and the second curved plate, and between the third curved plate and the fourth curved plate.

[0035] Furthermore,

[0036] A space for accommodating high-temperature components of the fan blade motor is formed between the second curved plate and the third curved plate, and the inner side walls of the second curved plate and the third curved plate are provided with exhaust ports; the cooling medium of the second air duct flows to the high-temperature components of the fan blade motor through the exhaust ports.

[0037] The technical effects that can be achieved by the present invention are analyzed as follows:

[0038] The present invention provides an air pump, which includes a pump housing and a heat dissipation motor and a fan motor arranged in sequence along the axial direction inside the pump housing; the air pump has an arc-shaped heat dissipation path, the inlet of the heat dissipation path is arranged at the first end in the axial direction of the air pump, and the outlet of the heat dissipation path is arranged at the outer peripheral wall of the air pump; the air pump has an arc-shaped inflation path, the inlet of the inflation path is arranged at the second end in the axial direction of the air pump, and the outlet of the inflation path is arranged at the outer peripheral wall of the air pump; the first end and the second end are respectively the two ends of the air pump in the axial direction.

[0039] When the air pump is started, external air is output from the air inlet at the second end of the air pump along the arc-shaped air path to the air outlet at the outer peripheral wall of the air pump, thereby completing the air charging process. At the same time, the external cooling medium is output from the heat dissipation air inlet at the first end of the air pump along the arc-shaped heat dissipation path to the heat dissipation outlet at the outer peripheral wall of the air pump. Due to the existence of the heat dissipation motor, the heat dissipation motor flows the external cooling medium from the heat dissipation air inlet along the arc-shaped heat dissipation path until it is discharged from the heat dissipation outlet. During the flow process, the cooling medium will take away the heat energy inside the air pump, thereby realizing the cooling of the air pump, thereby effectively alleviating the problems of the high temperature of the fan motor itself, the high outlet temperature of the air pump, and the high shell temperature in the existing air pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of the three-dimensional structure of an electric air pump provided in an embodiment of the present invention;

[0042] Figure 2 A front view of an electric air pump provided by an embodiment of the present invention;

[0043] Figure 3 A back view of the electric air pump provided by an embodiment of the present invention;

[0044] Figure 4 An exploded view of an electric air pump provided by an embodiment of the present invention;

[0045] Figure 5 A schematic structural diagram of the first half shell in the electric air pump provided in an embodiment of the present invention.

[0046] Icon: 100-pump housing; 200-heat dissipation motor; 300-fan motor; 01-first end; 02-second end; 110-heat dissipation air inlet; 120-heat dissipation air outlet; 130-inflating inlet; 140-inflating outlet; 101-first half shell; 102-second half shell; 411-first guide plate; 412-second guide plate; 001-first air duct; 421-first diversion mechanism; 422-second diversion mechanism; 002-second air duct; 401-first curved plate; 402-second curved plate; 403-third curved plate; 404-fourth curved plate. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0051] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0052] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The following embodiments and features of the embodiments can be combined with each other without conflict. Figure 1 A schematic diagram of the three-dimensional structure of an electric air pump provided in an embodiment of the present invention; Figure 2 A front view of an electric air pump provided by an embodiment of the present invention; Figure 3 A back view of the electric air pump provided by an embodiment of the present invention; Figure 4 An exploded view of an electric air pump provided by an embodiment of the present invention; Figure 5 A schematic structural diagram of the first half shell in the electric air pump provided in an embodiment of the present invention.

[0054] Embodiment 1

[0055] This embodiment provides an air pump, which includes: a pump housing 100, and a heat dissipation motor 200 and a fan motor 300 arranged in sequence along the axial direction in the pump housing 100;

[0056] The air pump has an arc-shaped heat dissipation path, the inlet of the heat dissipation path is arranged at the first end 01 in the axial direction of the air pump, and the outlet of the heat dissipation path is arranged at the outer peripheral wall of the air pump;

[0057] The air pump has an arc-shaped air-inflating path, the inlet of the air-inflating path is arranged at the second end 02 in the axial direction of the air pump, and the outlet of the air-inflating path is arranged at the outer peripheral wall of the air pump;

[0058] The first end 01 and the second end 02 are respectively two ends of the air pump in the axial direction.

[0059] When the air pump is started, external air is output from the air inlet 130 disposed at the second end 02 of the air pump along an arc-shaped air path to the air outlet disposed on the outer peripheral wall of the air pump, thereby completing the air charging process. At the same time, the external cooling medium is output from the heat dissipation air inlet 110 disposed at the first end 01 of the air pump along an arc-shaped heat dissipation path to the heat dissipation outlet 120 disposed on the outer peripheral wall of the air pump. Due to the existence of the heat dissipation motor 200, the heat dissipation motor 200 flows the external cooling medium from the heat dissipation air inlet 110 along the arc-shaped heat dissipation path until it is discharged from the heat dissipation outlet 120. During the flow process, the cooling medium will take away the heat energy inside the air pump, thereby realizing the cooling of the air pump, thereby effectively alleviating the problems of the high temperature of the fan motor 300 itself, the high outlet temperature of the air pump, and the high shell temperature in the existing air pump.

[0060] Regarding the above-mentioned arc-shaped air filling path and arc-shaped heat dissipation path, it should be noted that:

[0061] The inflation path refers to the path of gas flow during the inflation process, which in this embodiment may be a path with an acute angle, a path with an obtuse angle, or other paths with multiple angles.

[0062] The heat dissipation path refers to the flow path of the heat dissipation medium, which in this embodiment may be a path with an acute angle, a path with an obtuse angle, or other paths with multiple angles.

[0063] The inflation path and the heat dissipation path should not overlap.

[0064] Regarding the specific structure of the air pump, in detail:

[0065] The first end 01 of the pump housing 100 is provided with a heat dissipation air inlet 110, and the outer wall of the pump housing 100 is provided with a heat dissipation air outlet 120; when the heat dissipation motor 200 is started, the external cooling medium flows to the fan motor 300 through the heat dissipation air inlet 110, and then is discharged from the heat dissipation air outlet 120.

[0066] The second end 02 of the pump housing 100 is provided with an inflation inlet 130, and the outer peripheral wall of the pump housing 100 is provided with an inflation outlet 140, and the inflation outlet 140 is separated from the heat dissipation outlet 120; when the fan motor 300 is started, the inflation medium flows to the fan motor 300 through the inflation inlet 130, and then is discharged from the inflation outlet 140.

[0067] Regarding the shape and structure of the pump housing 100, specifically:

[0068] See also Figures 1 to 5 .

[0069] The pump housing 100 is configured as an ellipsoidal structure, one end of which along the axial direction is a gas inlet 130 , and the other end is a heat dissipation air inlet 110 , and a heat dissipation air outlet 120 and a gas dissipation air outlet 140 are provided on the peripheral wall.

[0070] Furthermore, the pump housing 100 is provided with a handle, which is arranged along the axial direction of the pump housing 100 and has the same direction as the axial direction of the pump housing 100 to facilitate the operator to hold it.

[0071] Furthermore, a switch is provided on the pump housing 100 , and the switch is used to control the start and stop of the heat dissipation motor 200 and the fan motor 300 .

[0072] Furthermore, the pump housing 100 includes a first half housing 101 and a second half housing 102, and the first half housing 101 and the second half housing 102 are assembled on the central axis surface of the air pump;

[0073] Furthermore, the heat dissipation outlet hole 120 is disposed on the first half shell 101 and / or the second half shell 102 , and the air charging outlet 140 is disposed on the first half shell 101 or the second half shell 102 .

[0074] Regarding the structure inside the pump housing 100, specifically:

[0075] by Figure 5 Taking the first half shell 101 in the figure as an example: an isolation component is arranged inside the pump shell 100, the isolation component is arranged outside the heat dissipation motor 200 and forms an air duct, and the air duct extends from the heat dissipation air inlet 110 to the heat dissipation air outlet 120.

[0076] Specifically: the isolation member includes a first guide area and a second guide area; the first guide area can be understood as an area for guiding the flow of the cooling medium, and the second guide area can also be understood as an area for guiding the flow of the cooling medium. The shapes and structures of the first guide area and the second guide area can be set in various ways. For example, the first guide area and the second guide area are both set as long strip air duct structures. The two long strip air duct structures extend from the heat dissipation air inlet 110 to the direction of the fan motor 300. The cooling medium is blown from the heat dissipation air inlet 110 through the long strip air duct structure to the fan motor 300, and then blown to the heat dissipation outlet 120 set on the peripheral wall of the pump housing 100.

[0077] About the first boot area:

[0078] The first guide area includes a first guide plate 411 and a second guide plate 412 symmetrically arranged on both sides of the axis of the heat dissipation motor 200. The heat dissipation motor 200 is located between the first guide plate 411 and the second guide plate 412. A first air duct 001 is formed between the first guide plate 411 and the heat dissipation motor 200, and between the second guide plate 412 and the heat dissipation motor 200.

[0079] For detailed structures of the first guide plate 411 and the second guide plate 412, see Figure 5 The first guide plate 411 and the second guide plate 412 are both configured as thin plate structures, which extend from the first end 01 to the second end 02. Furthermore, in order to increase the strength thereof, a plurality of reinforcing ribs are disposed on the first guide plate 411 and the second guide plate 412.

[0080] About the Second Boot Area:

[0081] The second guide area is disposed between the heat dissipation motor 200 and the fan motor 300 and is connected to the first guide area on one side and to the heat dissipation outlet on the other side.

[0082] The second guide area includes a first flow dividing mechanism 421 and a second flow dividing mechanism 422 which are symmetrically arranged on both sides of the air pump axis and gradually separated from the direction from the heat dissipation motor 200 to the fan motor 300;

[0083] The first flow diversion mechanism 421 and the second flow diversion mechanism 422 are both formed with a second air duct 002 inside, and both ends of the two second air ducts 002 are respectively connected to the first air duct 001 and the heat dissipation outlet.

[0084] in:

[0085] The first flow dividing mechanism 421 includes a first curved plate 401 and a second curved plate 402 spaced apart from each other; the second flow dividing mechanism 422 includes a third curved plate 403 and a fourth curved plate 404 spaced apart from each other;

[0086] The side of the first curved plate 401 adjacent to the heat dissipation motor 200 is connected to the first guide plate 411, the side of the second curved plate 402 adjacent to the heat dissipation motor 200 is connected to the third curved plate 403, and the side of the fourth curved plate 404 adjacent to the heat dissipation motor 200 is connected to the second guide plate 412; the first curved plate 401 and the second curved plate 402 are connected to the side adjacent to the fan blade motor 300; the third curved plate 403 and the fourth curved plate 404 are connected to the side adjacent to the fan blade motor 300; a second air duct 002 is formed between the first curved plate 401 and the second curved plate 402, and between the third curved plate 403 and the fourth curved plate 404.

[0087] Furthermore, the position where the first curved plate 401 is connected to the first guide plate 411 is set as an arc structure convex to the inside, and the position where the fourth curved plate 404 is connected to the second guide plate 412 is set as an arc structure convex to the inside. Also, the position of the first curved plate 401 close to the fan motor 300 is set as an arc structure convex to the outside, and the position of the fourth curved plate 404 close to the fan motor 300 is set as an arc structure convex to the outside, so that the first curved plate 401 and the fourth curved plate 404 form an S-shaped thin plate structure.

[0088] Furthermore,

[0089] The second curved plate 402 expands and extends from the middle of the air pump in a direction away from the central axis until it has the same direction as the first curved plate 401, and finally closes with the first curved plate 401 through a longitudinal plate ( Figure 5 The top and bottom orientation shown in is the vertical orientation).

[0090] The third curved plate 403 expands and extends from the middle of the air pump in a direction away from the central axis until it has the same direction as the fourth curved plate 404, and finally closes with the third curved plate 403 through a longitudinal plate ( Figure 5 The top and bottom orientation shown in is the vertical orientation).

[0091] Furthermore,

[0092] A space for accommodating high-temperature components of the fan motor 300 is formed between the second curved plate 402 and the third curved plate 403, and exhaust ports are provided on the inner walls of the second curved plate 402 and the third curved plate 403; the cooling medium of the second air duct 002 flows to the high-temperature components of the fan motor 300 through the exhaust ports.

[0093] In summary, the electric air pump provided in this embodiment is provided with a heat dissipation motor 200, and an isolation component capable of guiding the flow of cooling medium is provided outside the heat dissipation motor 200, and the isolation component forms a first air duct 001 and a second air duct 002. The cooling medium flows to the high-temperature components of the fan motor 300 through the first air duct 001 and the second air duct 002 in sequence, and the high-temperature components are effectively cooled. Therefore, compared with the existing air motor, the air pump provided by the present invention has a low outlet temperature.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric air pump, characterized in that: include: A pump housing (100) and a heat dissipation motor (200) and a fan motor (300) arranged in sequence along an axial direction and disposed in the pump housing (100); The electric air pump has an arc-shaped heat dissipation path, the inlet of the heat dissipation path is arranged at the first end (01) in the axial direction of the electric air pump, and the outlet of the heat dissipation path is arranged on the outer peripheral wall of the electric air pump; The electric air pump has an arc-shaped air charging path, the inlet of the air charging path is arranged at the second end (02) of the axial direction of the electric air pump, and the outlet of the air charging path is arranged on the outer peripheral wall of the electric air pump; The first end (01) and the second end (02) are respectively two ends of the electric air pump in the axial direction; The pump housing (100) is configured as an ellipsoidal structure, a first end (01) of the pump housing (100) is provided with a heat dissipation air inlet (110), and an outer peripheral wall of the pump housing (100) is provided with a heat dissipation air outlet (120); When the heat dissipation motor (200) is in a startup state, external cooling medium flows toward the fan motor (300) through the heat dissipation air inlet (110), and is then discharged through the heat dissipation air outlet (120); The second end (02) of the pump housing (100) is provided with an air inlet (130), the outer peripheral wall of the pump housing (100) is provided with an air outlet (140), and the air outlet (140) is separated from the heat dissipation outlet hole (120); When the fan motor (300) is started, the inflation medium flows toward the fan motor (300) through the inflation inlet (130) and is then discharged from the inflation outlet (140); An isolation component is provided inside the pump housing (100), the isolation component is arranged around the heat dissipation motor (200) and forms an air duct, and the air duct extends from the heat dissipation air inlet (110) to the heat dissipation air outlet (120).

2. The electric air pump according to claim 1, characterized in that: The pump housing (100) comprises a first half housing (101) and a second half housing (102), wherein the first half housing (101) and the second half housing (102) are assembled on the central axis surface of the electric air pump; The heat dissipation vent (120) is arranged on the first half shell (101) and / or the second half shell (102), and the inflation vent (140) is arranged on the first half shell (101) or the second half shell (102).

3. The electric air pump according to claim 1, characterized in that: The isolation member includes a first guide area and a second guide area; The first guide area extends from the heat dissipation air inlet (110) in the direction of the fan blade motor (300), and the heat dissipation motor (200) is arranged in the first guide area; The second guide area is arranged between the heat dissipation motor (200) and the fan blade motor (300), and is connected to the first guide area on one side and to the heat dissipation air outlet on the other side.

4. The electric air pump according to claim 3, characterized in that: The first guide area comprises a first guide plate (411) and a second guide plate (412) symmetrically arranged on both sides of the axis of the heat dissipation motor (200), and a first air duct (001) is formed between the first guide plate (411) and the heat dissipation motor (200), and between the second guide plate (412) and the heat dissipation motor (200).

5. The electric air pump according to claim 4, characterized in that: The second guide area comprises a first flow dividing mechanism (421) and a second flow dividing mechanism (422) which are symmetrically arranged on both sides of the axis direction of the electric air pump and gradually separated from the direction pointing from the heat dissipation motor (200) to the fan motor (300); The first flow diversion mechanism (421) and the second flow diversion mechanism (422) are both formed with a second air duct (002) inside, and both ends of the two second air ducts (002) are respectively connected to the first air duct (001) and the heat dissipation outlet.

6. The electric air pump according to claim 5, characterized in that: The first flow dividing mechanism (421) comprises a first curved plate (401) and a second curved plate (402) which are spaced apart from each other; the second flow dividing mechanism (422) comprises a third curved plate (403) and a fourth curved plate which are spaced apart from each other; A side of the first curved plate (401) adjacent to the heat dissipation motor (200) is connected to the first guide plate (411), a side of the second curved plate (402) adjacent to the heat dissipation motor (200) is connected to the third curved plate (403), and a side of the fourth curved plate adjacent to the heat dissipation motor (200) is connected to the second guide plate (412); The first curved plate (401) and the second curved plate (402) are connected at one side adjacent to the fan blade motor (300); the third curved plate (403) and the fourth curved plate are connected at one side adjacent to the fan blade motor (300); A second air duct (002) is formed between the first curved plate (401) and the second curved plate (402), and between the third curved plate (403) and the fourth curved plate.

7. The electric air pump according to claim 6, characterized in that: A space for accommodating high-temperature components of the fan motor (300) is formed between the second curved plate (402) and the third curved plate (403), and exhaust ports are provided on the inner side walls of the second curved plate (402) and the third curved plate (403); the cooling medium of the second air duct (002) flows toward the high-temperature components of the fan motor (300) through the exhaust ports.

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