Air compressor motor pump head and air compressor

Abstract

The application discloses an air compressor motor pump head and an air compressor to solve the technical problem of poor heat dissipation effect of a motor in the air compressor. The motor pump head comprises a cylinder, a motor, a left box body and a right box body, and a fan is arranged in a wind scooper. The wind scooper comprises a cover shell body and a conical part which are integrally injection molded, and the conical part is arranged in a circular channel of the cover shell body; the conical part comprises an inner ring wall and an outer ring wall, the inner ring wall surrounds a first air guide channel, and the outer ring wall forms a second air guide channel; the box body is provided with a partition plate, an air outlet of the second air guide channel corresponds to an air guide hole of the partition plate, and an air outlet edge of the first air guide channel and an edge of a crank form an air outlet ring. The second air guide channel corresponds to a coil part of the motor, and airflow blown out by the first air guide channel is pushed by the crank to be quickly discharged from the air outlet ring and into the second air guide channel, so that the cooling airflow volume blown to the motor per unit time is increased, and the heat dissipation efficiency of the motor is improved.

Description

Technical Field

[0001] This invention belongs to the field of air compressor technology and relates to an air compressor motor pump head. Background Technology

[0002] The motor pump head is a key component of an air compressor used to compress gas and deliver the compressed gas into an air tank. The pump head typically consists of a motor and cylinders connected to both ends of the motor. Since the cylinders perform work through the reciprocating motion of a piston, they generate a significant amount of heat. In existing technology, cooling fans are located at the ends of the crankcases on both sides, rotating by connecting to both ends of the motor shaft. However, the cooling airflow drawn in by the fans is relatively dispersed, resulting in poor real-time heat dissipation for the motor. Especially in hot summers, the motor temperature remains high, affecting its lifespan. Summary of the Invention

[0003] The technical problem to be solved by this invention is: how to improve the heat dissipation effect of the motor pump head.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] An air compressor motor pump head includes a cylinder, a motor, a left housing, and a right housing. The motor is installed between the left housing and the right housing, which are connected by a tie rod. A cylinder seat is provided on the side wall of both the left and right housings, and the cylinder is fixed in the cylinder seat. The output shafts at both ends of the motor are respectively inserted into the crank chambers of the left and right housings. The motor is connected to the corresponding cylinder via a crank mechanism. An air guide shroud is provided on the side of the left housing opposite the motor, and on the side of the right housing opposite the motor. Each air guide shroud contains a fan, which is connected to the output shaft of the motor.

[0006] The air guide shroud includes an integrally injection-molded shroud body and a conical component. The shroud body has a circular channel with an air inlet and an air outlet at both ends. The conical component is disposed within the circular channel, dividing the circular channel into a front chamber connected to the air inlet and a rear chamber connected to the air outlet. The fan is located within the front chamber. The conical component includes an inner ring wall and an outer ring wall. The inner ring wall forms an air guide channel one, and the outer ring wall forms an air guide channel two between itself and the side wall of the circular channel. The diameter of the air inlet of both air guide channel one and air guide channel two is larger than the diameter of the air outlet.

[0007] The left and right housings are equipped with partitions for mounting bearings. The partitions are provided with air guide holes corresponding to the coil of the motor. The air outlet of the second air guide channel corresponds to the air guide hole. The diameter of the air outlet of the first air guide channel is greater than the diameter of the crank in the crank mechanism. The edge of the air outlet of the first air guide channel and the edge of the crank form an air outlet ring.

[0008] To solve the above-mentioned technical problems, another technical solution provided by the present invention is:

[0009] An air compressor includes an air tank on which the air compressor motor pump head is mounted.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. By adding a conical component inside the air guide shroud, two air guide channels are formed inside the original circular channel. The airflow from one air guide channel blows directly to the coil of the motor through the air guide hole, achieving precise and efficient heat dissipation of the motor. The airflow from the other air guide channel is pushed by the crank rotating at high speed to quickly disperse from the air outlet ring and merge into the airflow of the other air guide channel. This increases the flow rate of cooling air blown to the motor per unit time, thereby improving the motor's heat dissipation efficiency.

[0012] 2. Increase air pressure and change air velocity by narrowing the air outlet of the air guide channel. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0014] Figure 1 This is a structural diagram of the air compressor motor pump head in the embodiment;

[0015] Figure 2 This is a cross-sectional view of the air compressor motor pump head in the embodiment;

[0016] Figure 3 This is a structural diagram of the motor air guide cover in the embodiment;

[0017] Figure 4 This is a perspective view of the motor air guide cover in the embodiment;

[0018] Figure 5 This is a cross-sectional view of the motor air guide cover in the embodiment;

[0019] Figure 6 This is a structural diagram of the left box in the embodiment. Detailed Implementation

[0020] To make the technical problems solved by the present invention, the technical solutions and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments.

[0021] Example

[0022] Figure 1 and 2 The diagram shows an air compressor motor pump head, including a cylinder 10, a motor 20, a left housing 30, and a right housing 40. The motor is installed between the left and right housings, which are connected by a tie rod 50. A cylinder seat 60 is provided on the side wall of both the left and right housings, and the cylinder 10 is fixed in the cylinder seat 60. The output shafts at both ends of the motor are inserted into the crank chambers of the left and right housings, respectively, and the motor is connected to the corresponding cylinder via a crank mechanism 70. An air guide shroud 80 is provided on the side of the left housing opposite the motor, and on the side of the right housing opposite the motor. Each air guide shroud contains a fan 90, which is connected to the output shaft of the motor. The motor drives the fan to rotate, and the airflow drawn in passes through the air guide shroud and blows onto the motor for real-time cooling.

[0023] See Figure 3 The air guide shroud 80 includes an integrally injection-molded shroud body 81 and a conical component 82. The shroud body has a circular channel with an air inlet 811 and an air outlet 812 at both ends. The conical component is disposed within the circular channel, dividing the circular channel into a front chamber connected to the air inlet 811 and a rear chamber 84 connected to the air outlet 812. A fan is located in the front chamber. The conical component 82 includes an inner ring wall 821 and an outer ring wall 822. The outer ring wall is connected to the side wall of the circular channel via a connecting part 823. The connecting part includes two parallel plates, one side of which is connected to the side wall of the circular channel, and the other side is connected to the outer ring wall 822. The inner ring wall 821 forms an air guide channel one 85, and the outer ring wall 822 forms an air guide channel two 86 with the side wall of the circular channel. The left and right housings are equipped with bearing mounting plates 100. Air guide holes 101 are provided on the plates corresponding to the motor coil area. The air outlet of air guide channel two corresponds to the air guide hole. The diameter of the air outlet of air guide channel one is larger than the diameter of the crank in the crank mechanism. The edge of the air outlet of air guide channel one 85 forms an air outlet ring 87 with the edge of the crank. In this embodiment, by adding a conical component 82 inside the air guide cover 80, two air guide channels are formed within the original circular channel. The airflow from air guide channel two blows directly to the motor coil area through the air guide hole 101, achieving precise and efficient heat dissipation of the motor. The airflow from air guide channel one 85 is propelled by the crank rotating at high speed and quickly disperses from the air outlet ring 87, merging into the airflow of air guide channel two 86. This increases the flow rate of cooling air blowing onto the motor per unit time, improving the motor's heat dissipation efficiency. During crank rotation, the bearing is intermittently exposed; the airflow from air guide channel one 85 can also cool the bearing and crank.

[0024] Among them, the diameter of the air inlet of air guide channel 1 85 and air guide channel 2 86 is larger than the diameter of the air outlet. The air outlets of the two air guide channels are narrowed. Under the premise of constant air volume, the air volume flowing out of the air outlet per unit time increases. The airflow is pressurized here, which increases the airflow velocity and improves the heat dissipation efficiency of motor 20.

[0025] Preferably, the angle formed between the inner ring wall 821 and the central axis of the first air guide channel 85 is A, where angle A is 10°-20°, and preferably 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, or 19°. The angle formed between the outer ring wall 822 of the outer ring plate and the central axis of the second air guide channel 86 is B, where angle B is 5°-15°, and preferably 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, or 14°.

[0026] The housing body has an air outlet slot 88 on one side corresponding to the cylinder seat, which communicates with the second air guide channel 86. The cylinder seat has a slot 61 that communicates with the air outlet slot 88. Part of the airflow blown out from the second air guide channel 86 passes through the slot 61 and flows upward to dissipate heat from the cylinder. Since the airflow in the first air guide channel 85 is replenished into the second air guide channel 86, the fact that part of the airflow in the second air guide channel 86 is used to cool the cylinder will not affect the normal heat dissipation of the motor 20.

[0027] In summary, applying the motor pump head from the above embodiments to an air compressor can quickly and accurately achieve rapid heat dissipation of the motor, cylinder, and crank mechanism without increasing the motor speed, thereby improving the operating efficiency and service life of the air compressor.

[0028] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air compressor motor pump head, comprising a cylinder (10), a motor (20), a left housing (30), and a right housing (40), wherein the motor is installed between the left housing and the right housing, and the left housing and the right housing are connected by a tie rod (50); a cylinder seat (60) is provided on the side wall of both the left housing and the right housing, the cylinder is fixed in the cylinder seat, the output shafts at both ends of the motor are respectively inserted into the crank chambers of the left housing and the right housing, and the motor is connected to the corresponding cylinder through a crank mechanism (70), characterized in that, A wind guide shroud (80) is provided on the side of the left housing opposite to the motor and on the side of the right housing opposite to the motor. A fan (90) is provided inside each wind guide shroud and the fan is connected to the output shaft of the motor. The air guide cover (80) includes an integrally injection-molded cover body (81) and a conical component (82). The cover body has a circular channel with an air inlet (811) and an air outlet (812) at both ends. The conical component is disposed in the circular channel and divides the circular channel into a front chamber (83) connected to the air inlet and a rear chamber (84) connected to the air outlet. The fan (90) is located in the front chamber (83). The conical component (82) includes an inner ring wall (821) and an outer ring wall (822). The inner ring wall forms an air guide channel one (85), and the outer ring wall forms an air guide channel two (86) between itself and the side wall of the circular channel. The diameter of the air inlet of both the air guide channel one and the air guide channel two is greater than the diameter of the air outlet. The left and right housings are provided with partitions (100) for mounting bearings. The partitions are provided with air guide holes (101) corresponding to the coil part of the motor. The air outlet of the second air guide channel (86) corresponds to the air guide hole. The air outlet diameter of the first air guide channel (85) is greater than the crank diameter in the crank mechanism. The edge of the air outlet of the first air guide channel and the edge of the crank form an air outlet ring (87).

2. The air compressor motor pump head according to claim 1, characterized in that, The outer ring wall (822) is connected to the side wall of the circular channel by a connecting part (823).

3. The air compressor motor pump head according to claim 2, characterized in that, The connecting part (823) includes two parallel plates, one side of which is connected to the side wall of the circular channel and the other side is connected to the outer ring wall (822).

4. The air compressor motor pump head according to claim 1, characterized in that, The angle formed between the inner ring wall (821) and the central axis of the air guide channel (85) is A, and the angle A is 10°-20°.

5. The air compressor motor pump head according to claim 1, characterized in that, The angle between the outer ring wall (822) of the conical component (82) and the central axis of the second air guide channel (86) is B, and the angle B is 5°-15°.

6. The air compressor motor pump head according to claim 1, characterized in that, The cover body is provided with an air outlet groove (88) on one side corresponding to the cylinder seat (60) and communicating with the second air guide channel (86). The cylinder seat is provided with a slot (61) communicating with the air outlet groove (88).

7. An air compressor, comprising an air tank, characterized in that, The gas tank is equipped with an air compressor motor pump head as described in any one of claims 1-6.

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