CN116591930A

CN116591930A - Inflator pump

Info

Publication number: CN116591930A
Application number: CN202310497648.3A
Authority: CN
Inventors: 李家新; 贾铌
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-08-15

Abstract

The application relates to an inflator pump which comprises a shell, a driver and a cylinder assembly, wherein the driver and the cylinder assembly are arranged in a mounting cavity of the shell, and the cylinder assembly is arranged at a first axial end of the driver. The inflator pump also comprises a cooling fan and a mounting bracket, wherein the cooling fan is arranged at the axial second end of the driver. The driver is installed in the installation cavity through the installing support, and the installing support forms the circulation passageway in the axial week side of driver. The shell is provided with an air inlet at the position of the cooling fan, an air outlet at the position of the air cylinder assembly, and the cooling fan is used for driving air flow to flow from the air inlet to the air outlet. According to the inflator pump, the radiating air is formed through the radiating fan, forced convection heat exchange is carried out, and radiating and cooling are carried out. Meanwhile, the initial temperature of air sucked by the air cylinder assembly can be reduced, and the service life of the product can be prolonged. In addition, the mounting bracket can reduce the blocking of the heat dissipation air through the flow passage when mounting the driver, so that the heat dissipation air can smoothly pass through.

Description

Inflator pump

Technical Field

The application relates to the technical field of inflation equipment, in particular to an inflator pump.

Background

In driving a vehicle and riding, the situation that the tire pressure is insufficient or the tire is found out to leak can not be avoided, and then the inflation can be performed through the inflator pump. The air pump is also called an air pump and an air pump, and works through the operation of a motor. When in air extraction, the valve of the communicating vessel of the air cylinder assembly is flushed by atmospheric air pressure, and air enters the cylinder body of the air cylinder assembly. When the tyre is inflated, the valve is closed by the air pressure in the cylinder body, and the air enters the tyre under the driving of the pressure.

The pump during operation is compressed air motion repeatedly, and compressed air acting produces heat energy and friction heat, and gas temperature rises in the cylinder body, leads to cylinder body surface and trachea afterbody gas outlet surface high temperature, influences user experience and the life of product. Among them, the heat energy generated by the compressed air is a main cause of the increase in the temperature of the gas in the cylinder. In order to solve the existing problems and defects, a heat dissipation air duct structure of an inflator pump is provided.

Disclosure of Invention

In view of the above, it is desirable to provide an inflator that can improve heat dissipation and reduce the operating temperature of the cylinder.

The utility model provides an inflator pump, includes casing, driver and cylinder subassembly, be formed with the installation cavity in the casing, the driver reaches cylinder subassembly install in the installation cavity, just cylinder subassembly locates driver axial first end, and with the driver transmission is connected, the inflator pump still includes:

the cooling fan is arranged at the second axial end of the driver; a kind of electronic device with high-pressure air-conditioning system

The mounting bracket is arranged in the mounting cavity through the driver, and the mounting bracket forms a flow passage at the circumferential side of the axial direction of the driver;

the shell is provided with an air inlet communicated with the mounting cavity at the position of the cooling fan, an air outlet communicated with the mounting cavity is provided with the air cylinder assembly, and the cooling fan is used for driving air flow to flow from the air inlet to the air outlet.

According to the inflator pump, the radiating air is formed through the radiating fan, forced convection heat exchange is carried out between the radiating air and the driver and the cylinder assembly, and the driver and the cylinder assembly are subjected to heat radiation and temperature reduction. Meanwhile, the initial temperature of air sucked by the air cylinder assembly can be reduced, and the user experience and the service life of the product can be improved. In addition, the mounting bracket can reduce the blocking of the heat dissipation air through the flow passage when the driver is mounted and fixed, so that the heat dissipation air can smoothly pass through.

In one embodiment, the heat dissipation fan is a centrifugal fan.

In one embodiment, the air inlet is formed at one side of the radial intersection of the housing and the cooling fan;

the inflator pump also comprises a separation plate, wherein the separation plate is arranged between the cooling fan and the air inlet, and a secondary air inlet is formed in the axial direction of the cooling fan.

In one embodiment, the cooling fan is in transmission connection with the driver.

In one embodiment, the inflator further comprises a baffle disposed within the mounting chamber and located at the cylinder assembly.

In one embodiment, the baffles are arranged parallel to and spaced apart from the air outlets, and the area of the baffles is smaller than the area of the air outlets.

In one embodiment, the inflator includes two mounting brackets disposed on opposite sides of the driver and each configured with a securing portion for mating with a surface of the driver.

In one embodiment, each of the mounting brackets is further configured with a support portion connecting the fixing portion and a cavity wall of the mounting cavity, and the flow passage is formed between the support portions of the two mounting brackets.

In one embodiment, each mounting bracket is provided with two supporting parts, and the two supporting parts are respectively connected with the cavity walls on two opposite sides of the mounting cavity;

each supporting part is composed of at least one supporting leg, and the projections of all supporting legs of each supporting part in the axial direction of the driver are overlapped.

In one embodiment, one of the two supporting parts comprises two supporting legs, the other of the two supporting parts comprises one supporting leg, and all supporting legs of each mounting bracket are arranged in a Y shape.

In one embodiment, the mounting bracket forms two through-flow channels on two opposite sides, and the projection area of one of the two through-flow channels, which is far away from the air outlet, in the axial direction of the driver is larger than the projection area of the other through-flow channel in the axial direction of the driver.

In one embodiment, the diameter of the cooling fan is greater than the diameter of the driver.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of an inflator in accordance with one embodiment of the present application.

FIG. 2 is a schematic view of a portion of the structure of the inflator shown in FIG. 1.

FIG. 3 is a schematic view of the inflator pump of FIG. 2 with the cylinder assembly and baffle removed.

FIG. 4 is a schematic view of a portion of the structure of the inflator shown in FIG. 1.

FIG. 5 is a schematic cross-sectional view of a portion of the structure of the inflator of FIG. 1 perpendicular to the axial direction of the actuator.

Reference numerals illustrate: 100. an inflator pump; 10. a housing; 11. a storage section; 20. a driver; 30. a cylinder assembly; 31. a cylinder; 32. a cylinder cover; 33. a transmission mechanism; 34. a connecting rod; 40. a heat radiation fan; 50. a mounting bracket; 51. a fixing part; 52. a support part; 521. support legs; 61. an inflation tube; 62. a housing; 63. a battery; 70. a partition plate; 80. a baffle; q, a mounting cavity; G. a flow-through channel; J. an air inlet; C. an air outlet; z, an assembly port; K. a secondary air inlet; B. and a battery compartment.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the term "and/or" is merely an association relation describing the association object, meaning that three relations may exist, e.g. a and/or B, may be represented: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 3, an inflator 100 according to an embodiment of the present application includes a housing 10, a driver 20 and a cylinder assembly 30, wherein a mounting cavity Q is formed in the housing 10, the driver 20 and the cylinder assembly 30 are mounted in the mounting cavity Q, and the cylinder assembly 30 is disposed at a first axial end of the driver 20 and is in transmission connection with the driver 20.

The inflator 100 further includes a cooling fan 40 and a mounting bracket 50, wherein the cooling fan 40 is disposed at the second axial end of the driver 20. The driver 20 is mounted in the mounting chamber Q by a mounting bracket 50, and the mounting bracket 50 forms a flow passage G on the circumferential side in the axial direction of the driver 20. Wherein, the housing 10 is provided with an air inlet J communicated with the mounting cavity Q at the position of the cooling fan 40, and an air outlet C communicated with the mounting cavity Q at the position of the air cylinder assembly 30, and the cooling fan 40 is used for driving air flow from the air inlet J to the air outlet C.

The cylinder assembly 30 and the heat dissipation fan 40 are respectively arranged at two opposite ends of the driver 20, and the heat dissipation fan 40 drives the air flow to form heat dissipation air. The heat dissipation air flows along the surface of the driver 20 in the process of blowing to the cylinder assembly 30 from the second end to the first end in the axial direction of the driver 20, passes through the mounting bracket 50 through the flow passage G, blows to the cylinder assembly 30, performs convective heat exchange with the cylinder assembly 30, and is blown out from the air outlet C.

Wherein the driver 20 may be, but is not limited to being, a motor. The cooling fan 40 may also be in driving connection with the driver 20 and driven by the driver 20.

It will be appreciated that to perform its normal functions, the cylinder assembly 30 may include a cylinder block 31, a cylinder head 32, a transmission 33, a connecting rod 34, etc., wherein the connecting rod 34 is drivingly connected to the driver 20 by the transmission 33 and is capable of reciprocating within the cylinder block 31 under the drive of the driver 20, and the transmission 33 may be a gear shaft. The cylinder head 32 communicates with the outlet of the cylinder 31, and air flow between the two can only flow from the inside of the cylinder 31 to the cylinder head 32. The inflator 100 may further include an inflation tube 61 for inflating a tire, the inflation tube 61 having an air inlet end and an inflation end, the housing 10 further having an assembly opening Z, the air inlet end of the inflation tube 61 being connected to the cylinder head 32 via the assembly opening Z, the inflation end being for linking the tire for inflation.

In addition, the inflator 100 may further include a housing 62 sleeved outside the housing 10, where the housing 62 is correspondingly opened at the opening position of the housing 10.

The inflator 100 forms heat radiation air by the heat radiation fan 40, performs forced convection heat exchange with the driver 20 and the cylinder assembly 30, and radiates heat to cool the driver 20 and the cylinder assembly 30. At the same time, the initial temperature of the air sucked by the air cylinder assembly 30 can be reduced, which is beneficial to improving the user experience and prolonging the service life of the product. In addition, the mounting bracket 50 can reduce the blocking of the heat radiation air through the flow passage G while mounting and fixing the driver 20, so that the heat radiation air can smoothly pass through.

In some embodiments, the driver 20 is a motor. Inflator 100 further includes a battery 63, and a battery compartment B for housing battery 63 is also configured within housing 10.

The motor has reliable performance, is convenient to control and has a simple energy supply mode, and energy supply can be realized through the battery 63. The battery compartment B may be formed at the circumferential side and end of the installation cavity Q to be able to place two batteries 63 in two directions, improving the compactness of the inflator 100.

In some embodiments, the cooling fan 40 is a centrifugal fan.

The axial flow fan guides the air flow to flow in and out axially, and in the case of being arranged coaxially with the driver 20, a large amount of the air flow is blocked by the driver 20, and the air supply efficiency is low.

In contrast, the centrifugal fan can guide the air flow to flow in from the axial direction and flow out from the radial direction, and is generally coaxially arranged with the driver 20, and can guide the air flow to flow between the driver 20 and the wall of the mounting cavity Q after entering and blowing to the peripheral side of the driver 20, thereby improving the air supply efficiency.

Further, the intake port J is configured at a side where the housing 10 intersects with the radial direction of the cooling fan 40. The inflator 100 further includes a partition plate 70 provided between the radiator fan 40 and the intake port J, and configured with a sub-intake port K in the axial direction of the radiator fan 40.

It is considered that in order to improve the space utilization in the casing 10, the axially intersecting end plates of the casing 10 and the radiator fan 40 may require mounting of the battery 63 and the like. Accordingly, the intake port J may be formed at a side wall of the housing 10. At this time, a partition plate 70 may be provided to form an axial secondary air intake K for the cooling fan 40 so that it sucks air.

In some embodiments, the cooling fan 40 is in driving connection with the driver 20. The driver 20 forms output shafts at both ends, and the cooling fan 40 and the cylinder assembly 30 are respectively located at both ends of the driver 20 and are respectively in transmission connection with the output shafts at both ends.

In this way, the kinetic energy generated by the driver 20 can be fully utilized, the number of accessories can be reduced, the cooling fan 40 can be operated synchronously with the cylinder assembly 30, and heat is dissipated when the cylinder assembly 30 is operated.

In some embodiments, the diameter of the cooling fan 40 is greater than the diameter of the driver 20.

The diameter of the cooling fan 40 may be slightly larger than the diameter of the driver 20, for example, the cooling fan 40 has a diameter 1mm-3mm larger than the diameter of the driver 20 to ensure that cooling wind generated by the cooling fan 40 can be sufficiently blown between the driver 20 and the wall of the installation cavity Q.

In some embodiments, inflator 100 further includes a baffle 80, baffle 80 being disposed within mounting chamber Q and located at cylinder assembly 30.

The baffle 80 can disturb the heat dissipation air flowing through the cylinder assembly 30, form turbulence such as vortex, and enhance the convective heat transfer with the cylinder assembly 30.

Further, the baffle plates 80 are arranged parallel to and at intervals from the air outlet C, and the area of the baffle plates 80 is smaller than that of the air outlet C.

The heat dissipation wind flowing to the air outlet C is subjected to the baffle 80 to strengthen the forced convection of the air cylinder assembly 30 at the air outlet C, and flows out of the air outlet C after heat exchange is strengthened.

Specifically, baffle 80 may contact cylinder head 32 while facilitating heat transfer and dissipation.

Referring to fig. 4 and 5, in some embodiments, the inflator 100 includes two mounting brackets 50, the two mounting brackets 50 being disposed on opposite sides of the actuator 20 and each being configured with a securing portion 51 for mating with a surface of the actuator 20.

The two mounting brackets 50 are capable of forming a stable fixation to the driver 20 on opposite sides together, and the driver 20 is not in contact with the cavity wall of the mounting cavity Q under the fixation of the mounting brackets 50, so that the heat dissipation air flows between the surface of the driver 20 and the cavity wall.

Specifically, the driver 20 is generally columnar, and the fixing portion 51 is configured with an arcuate engagement surface in engagement with the surface of the driver 20. The two mounting brackets 50 are respectively arranged at the upper side and the lower side of the driver 20 and are respectively connected with the upper side wall and the lower side wall of the mounting cavity Q. The upper and lower sides refer to both sides in the up-down direction in fig. 5.

In addition, the mounting bracket 50 can be hollowed out to realize light weight.

Further, each mounting bracket 50 is also configured with a support portion 52, the support portion 52 connecting the fixing portion 51 and the cavity wall of the mounting cavity Q, and the flow passage G is formed between the support portions 52 of the two mounting brackets 50.

The support portion 52 can strengthen the stability of the fixing portion 51 by being attached to the cavity wall of the installation cavity Q. Meanwhile, the supporting parts 52 of the opposite mounting brackets 50 are spaced to form the through-flow channels G, so that space occupation perpendicular to the axial plane of the driver 20 is reduced, and the heat dissipation air can pass through conveniently.

Specifically, the support portion 52 connects the fixing portion 51 to the left side or right side wall of the installation cavity Q, wherein the left side and the right side refer to both sides in the left-right direction in fig. 5.

The width of the through-flow channel G is the space between the mounting portion and the wall of the mounting cavity Q, that is, the width of the mounting cavity Q minus the length of the supporting portion 52. The height of the through-flow channel G is the distance between the support portions 52 of the two mounting brackets 50, i.e. the height of the mounting cavity Q minus the height of the two support portions 52.

In some embodiments, each mounting bracket 50 is configured with two support portions 52, the two support portions 52 respectively connecting the cavity walls on opposite sides of the mounting cavity Q. Each support 52 is made up of at least one support leg 521, with the projections of all support legs 521 of each support 52 coinciding in the axial direction of the actuator 20.

For the stability of the fixed connection, the mounting bracket 50 is connected to the cavity wall on opposite sides of the mounting cavity Q by two support parts 52, wherein each support part 52 may have a plurality of support legs 521 and be connected to different parts of the cavity wall by different support legs 521.

It will be appreciated that the two mounting brackets 50 have four support portions 52 in total and are divided into two sets of opposite support portions 52, one flow channel G is formed between each set of opposite support portions 52, the two sets of support portions 52 form two flow channels G on opposite sides, and the two flow channels G may be the same or different in size.

When each support portion 52 has a plurality of support legs 521, the projections of all support legs 521 of each support portion 52 in the axial direction of the actuator 20 overlap, so that the size of the flow passage G formed by each support leg 521 can be unified, and the increase of resistance to flow of the heat dissipation air due to local excessive narrowing and the influence of the structural strength of the support leg 521 due to local excessive widening can be avoided.

Further, one support portion 52 of the two support portions 52 includes two support legs 521, the other support portion 52 includes one support leg 521, and all support legs 521 of each mounting bracket 50 are arranged in a Y-shape.

All support legs 521 of the mounting brackets 50 are arranged in a Y-shape to form a three-point fixation, so that a stable fixation can be formed by only one mounting bracket 50 on one side of the actuator 20. In comparison with the Y-shaped mounting bracket 50 having the Y-shaped support legs 521, if the mounting bracket 50 is a straight-shaped mounting bracket 50 having only one support leg 521 per support portion 52, it is necessary to install two straight-shaped mounting brackets 50 on a single side of the driver 20 to achieve stable fixation of the driver 20.

It will be appreciated that in other embodiments, both support portions 52 may include only one support leg 521, all support legs 521 of the mounting bracket 50 may be arranged in a straight configuration, or both support portions 52 may include both support legs 521, all support legs 521 of the mounting bracket 50 may be arranged in an X-configuration, etc., without limitation.

In some embodiments, the mounting bracket 50 forms two through-flow channels G on opposite sides, one of the two through-flow channels G that is farther from the air outlet C has a larger projected area in the axial direction of the driver 20 than the other.

The two through-flow channels G are respectively formed between the supporting portions 52 at both sides of the two mounting brackets 50, wherein the width W2 of the through-flow channel G away from the air outlet C is greater than the width W1 of the through-flow channel G close to the air outlet C, and is about twice.

In one embodiment, the width W2 of the flow channel G distal from the air outlet C is 14mm to 18mm, and the width W1 of the flow channel G proximal to the air outlet C is 7mm to 9mm. The height H of both support portions 52 is less than 4mm. On the premise of ensuring the structural strength, the area of the overcurrent channel G can be increased as much as possible.

The air cylinder assembly 30 can be scanned more fully by the heat dissipation air passing through the flow passage G far from the air outlet C, and the air suction port of the air cylinder assembly 30 is positioned between the cylinder body 31 and the connecting rod 34, so that the heat dissipation air passing through the flow passage G far from the air outlet C is increased, which is particularly beneficial to reducing the temperature of the air around the air suction port of the air cylinder.

Simulation analysis was performed on the inflator 100 having the Y-shaped mounting bracket 50 and the baffle 80 and the inflator 100 having the straight-shaped mounting bracket 50 and having no baffle 80, and the wind speed of the driver 20 was selected, and it was found that the wind speed of the former was increased from 1.85m/s to 4.03m/s. By choosing the wind speed at the suction opening of the cylinder assembly 30, it can be found that the wind speed of the former is increased from 0.79m/s to 1.93m/s. The air speeds of the air cylinder assembly 30 at the two sides of the air outlet C are selected, and the air speeds of the air cylinder assembly 30 are respectively increased from 1.30m/s and 0.51m/s to 2.20m/s and 1.21m/s.

Furthermore, the maximum temperature of the outer surface of the former cylinder block 31 is reduced from 123.8 ℃ to 113.3 ℃ of the latter, and the average temperature of the air around the suction port of the cylinder assembly 30 of the former is reduced from 65.5 ℃ to 50.2 ℃ of the latter. Accordingly, the Y-shaped mounting bracket 50 and the baffle 80 contribute to the improvement of the heat dissipation and temperature reduction performance of the inflator 100.

In some embodiments, the housing 10 is further configured with a receiving portion 11, and the receiving portion 11 is configured with a receiving groove therein, in which the inflation end of the inflation tube 61 can be received.

Specifically, one of the inflation end of the inflation tube 61 and the receiving groove of the receiving portion 11 is configured with a fitting groove, and the other is configured with a fitting projection, and the inflation end and the fitting groove can form a detachable engagement with the fitting projection through the fitting groove.

As such, when the inflator 100 is not in operation, the inflation tube 61 thereof may be stowed for shipping and placement.

The inflator 100 mounts the actuator 20 in the housing 10 via two mounting brackets 50, the two mounting brackets 50 forming two flow paths G. The two ends of the driver 20 are respectively connected with the cooling fan 40 and the air cylinder assembly 30 in a transmission way, the shell 10 forms an air inlet J at the cooling fan 40, an air outlet C at the air cylinder assembly 30, a separation plate 70 is arranged between the air inlet J and the cooling fan 40, and a secondary air inlet K is formed on the separation plate 70. The heat radiation fan 40 drives the air flow to generate heat radiation air, enters from the air inlet J, enters from the secondary air inlet K along the axial direction of the heat radiation fan 40, flows out along the radial direction of the heat radiation fan 40, and flows between the driver 20 and the cavity wall of the installation cavity Q. Meanwhile, the heat radiation fan 40 passes through the two through-flow passages G, wherein the area of the through-flow passage G away from the air outlet C is larger, and the air volume of the heat radiation air passing therethrough is larger. The heat sink flowing along the actuator 20 can exchange heat with the actuator 20 by convection, reducing the temperature of the actuator 20. Then, the cooling air flows to the cylinder assembly 30, effectively reducing the temperature of the air surrounding the cylinder assembly 30, particularly the temperature of the air intake J of the cylinder assembly 30. The air cylinder assembly 30 is provided with a baffle 80, and under the disturbance of the baffle 80, the heat dissipation air is blown out from the air outlet C after fully exchanging heat with the air cylinder assembly 30.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. The utility model provides an inflator, includes casing (10), driver (20) and cylinder subassembly (30), be formed with installation cavity (Q) in casing (10), driver (20) with cylinder subassembly (30) install in installation cavity (Q), just cylinder subassembly (30) are located driver (20) axial first end, and with driver (20) transmission connection, its characterized in that, the inflator still includes:

a radiator fan (40) provided at a second end in the axial direction of the actuator (20); a kind of electronic device with high-pressure air-conditioning system

A mounting bracket (50), wherein the driver (20) is mounted in the mounting cavity (Q) through the mounting bracket (50), and the mounting bracket (50) forms a through-flow channel (G) at the circumferential side of the axial direction of the driver (20);

the shell (10) is provided with an air inlet (J) communicated with the mounting cavity (Q) at the position of the cooling fan (40), the air cylinder assembly (30) is provided with an air outlet (C) communicated with the mounting cavity (Q), and the cooling fan (40) is used for driving air flow to flow from the air inlet (J) to the air outlet (C).

2. The inflator of claim 1, wherein the heat dissipating fan (40) is a centrifugal fan.

3. The inflator according to claim 2, wherein the intake port (J) is configured at a side where the housing (10) intersects with a radial direction of the radiator fan (40);

the inflator pump further comprises a separation plate (70), wherein the separation plate (70) is arranged between the cooling fan (40) and the air inlet (J), and a secondary air inlet (K) is formed in the axial direction of the cooling fan (40).

4. The inflator of claim 1, wherein the radiator fan (40) is drivingly connected to the driver (20).

5. The inflator of claim 1, further comprising a baffle (80), the baffle (80) disposed within the mounting cavity (Q) and located at the cylinder assembly (30).

6. The inflator of claim 5, wherein the baffle (80) is disposed parallel to and spaced apart from the gas outlet (C), the area of the baffle (80) being smaller than the area of the gas outlet (C).

7. The inflator according to any one of claims 1 to 6, wherein the inflator comprises two of the mounting brackets (50), the two mounting brackets (50) being provided on opposite sides of the driver (20) and each being configured with a fixing portion (51) for mating with a surface of the driver (20).

8. The inflator according to claim 7, wherein each of the mounting brackets (50) is further configured with a support portion (52), the support portion (52) connecting the fixing portion (51) and a chamber wall of the mounting chamber (Q), the flow passage (G) being formed between the support portions (52) of the two mounting brackets (50).

9. The inflator according to claim 8, wherein each of the mounting brackets (50) is configured with two of the support portions (52), the two support portions (52) being respectively connected to the chamber walls on opposite sides of the mounting chamber (Q);

each support (52) is formed by at least one support leg (521), and the projections of all support legs (521) of each support (52) in the axial direction of the actuator (20) coincide.

10. The inflator according to claim 9, wherein one (52) of the two support portions (52) includes two of the support legs (521), the other of the two support portions (52) includes one of the support legs (521), and all of the support legs (521) of each of the mounting brackets (50) are arranged in a Y-shape.

11. The inflator according to claim 1, wherein the mounting bracket (50) forms two of the flow-through passages (G) on opposite sides, a projected area of one of the two flow-through passages (G) in the axial direction of the driver (20) that is away from the air outlet (C) being larger than a projected area of the other one in the axial direction of the driver (20).

12. The inflator of claim 1, wherein the cooling fan (40) has a diameter greater than a diameter of the driver (20).