Piston air compressor cylinder head

Abstract

The present invention provides a piston air compressor cylinder head, which belongs to the technical field of air compressor parts. It solves the problem that the existing cylinder head has poor heat dissipation effect and affects the service life of the piston. The piston air compressor cylinder head includes an integrally formed cylinder head body, and the lower part of the cylinder head body is a compression air chamber matched with the cylinder end. The interior of the compression air chamber is respectively formed into an intake chamber and an exhaust chamber connected to the outside through a partition. The outer surface of the compression air chamber is obliquely provided with a windshield, and the windshield extends from the upper part of the intake chamber to the lower part of the exhaust chamber. A plurality of heat dissipation fins arranged at intervals are vertically arranged on both sides of the compression air chamber on the windshield, and each heat dissipation fin extends from the upper surface of the windshield to the lower surface thereof. The present invention has the advantage of better heat dissipation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of air compressor parts and components, and relates to a piston air compressor, in particular to a piston air compressor cylinder head. Background Art

[0002] A piston air compressor is an air compressor that changes its internal volume by relying on a cylinder and a piston that reciprocates in the cylinder. After the motor is started, it drives the crankshaft to rotate. Through the transmission of the connecting rod, the piston reciprocates and the working volume changes periodically. The crankshaft rotates one circle and the piston reciprocates once, and the process of intake, compression and exhaust is realized in the cylinder successively, completing a working cycle.

[0003] The structure of industrial-grade piston air compressors is that the motor and the air compressor pump head are separately installed on the base, and the two are connected by a belt. The pump head is provided with a crankcase, and the input shaft end of the crankcase is provided with a large pulley. The end face of the pulley is an impeller structure. The motor drives the pulley to rotate at a high speed so that the impeller blows air to the cylinder head on the pump head, thereby increasing the heat dissipation performance of the cylinder head. In the prior art, such as the air compressor cylinder head disclosed in Patent No. CN201820659584.7, and the cylinder head assembly and air compressor disclosed in Patent No. CN202120648116.1, the heat dissipation teeth of the cylinder head structure are vertically arranged on its upper end face, and the surrounding side walls are planar structures. The air driven by the impeller flows horizontally, so the contact area between the cylinder head and the flowing air will be greatly reduced, and the poor heat dissipation effect affects the service life of the piston. Summary of the invention

[0004] The purpose of the present invention is to address the above problems existing in the prior art and to provide a piston air compressor cylinder head which improves the overall structure of the cylinder head and combines the flow law of air to achieve better heat dissipation effect.

[0005] The objectives of the present invention can be achieved through the following technical solutions: a piston air compressor cylinder head, comprising an integrally formed cylinder head body, below the cylinder head body is a compression air chamber that cooperates with the cylinder end, the interior of the compression air chamber is formed with an intake chamber and an exhaust chamber that are connected to the outside through a partition, and it is characterized in that a windshield is obliquely arranged on the outer surface of the compression air chamber, and the windshield extends from the top of the intake chamber to the bottom of the exhaust chamber, and a plurality of heat dissipation fins arranged at intervals from each other are vertically arranged on both sides of the compression air chamber on the windshield, and each heat dissipation fin extends from the upper surface of the windshield to its lower surface.

[0006] In the above-mentioned piston air compressor cylinder head, the upper end surface of the compression air chamber is vertically provided with heat dissipation teeth, and the heat dissipation teeth are symmetrically distributed on the left and right.

[0007] In the above piston air compressor cylinder head, the heat dissipation teeth on the left and right sides are in a two-stage bending structure along the length direction thereof and simultaneously form an air flow channel.

[0008] In the above piston air compressor cylinder head, the corresponding bending angles between adjacent heat dissipation teeth are different so that a constriction structure is formed at the end of the air flow channel, that is, the inlet of the air flow channel is larger than the outlet of the air flow channel.

[0009] In the above piston air compressor cylinder head, the position on the wind shield plate between the two cooling fins is tilted upward to form a ventilation slot.

[0010] In the above piston air compressor cylinder head, a ventilation hole is provided on the wind shield plate between the innermost heat dissipation fin and the compressed air chamber, and the ventilation hole is located at the inlet of the air flow.

[0011] In the above piston air compressor cylinder head, the upper end surface of the wind shield is located between adjacent heat dissipation fins and is provided with a plurality of ribs connecting the two side walls.

[0012] In the above piston air compressor cylinder head, the height of the ribs gradually increases along the air flow direction.

[0013] In the above piston air compressor cylinder head, mounting holes are formed between the four outer edges of the compression air chamber and the wind shield, two of which are countersunk structures and the other two are through-hole structures.

[0014] In the above piston air compressor cylinder head, the corners of the heat dissipation fins are rounded.

[0015] Compared with the prior art, the cylinder head of the piston air compressor has the following advantages: the solid structure of the traditional cylinder head side wall is improved into a panel structure, which greatly reduces the obstruction to air flow and makes it easier for air to pass through horizontally. At the same time, the wind shield is tilted, which is equivalent to reducing the cross-sectional area on one side. Since the airflow formed when the impeller rotates can completely cover the entire cylinder head, the air flow rate increases with the tilt of the wind shield, thereby improving the heat dissipation effect. On the other hand, in order to rationally utilize the space on the upper and lower sides of the wind shield, cooling fins are added to the wind shield, which is equivalent to increasing the contact area with the air, thereby further improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the first embodiment. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the first embodiment. Figure 2 ;

[0018] Figure 3is a schematic diagram of the lower structure of the first embodiment;

[0019] Figure 4 It is a schematic diagram of air flow;

[0020] Figure 5 is a structural diagram of Embodiment 2;

[0021] Figure 6 is a schematic diagram of the lower structure of the second embodiment;

[0022] In the figure, 1, cylinder head body; 2, compression air chamber; 2a, intake chamber; 2b, exhaust chamber; 3, partition; 4, wind shield; 5, cooling fins; 6, cooling teeth; 7, air flow channel; 8, necking structure; 9, ventilation groove; 10, ventilation hole; 11, rib plate; 12, mounting hole. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] Embodiment 1

[0025] like Figures 1 to 4 As shown, the cylinder head of the piston air compressor comprises an integrally formed cylinder head body 1, which is formed by casting, and below the cylinder head body 1 is a compression air chamber 2 matched with the cylinder end, and the interior of the compression air chamber 2 is respectively formed with an intake chamber 2a and an exhaust chamber 2b connected to the outside through a partition 3, that is, the cylinder head body 1 is sealed and matched with the upper end surface of the air compressor cylinder, and the piston reciprocates in the cylinder, and at the same time cooperates with the one-way valve plate to intake and exhaust air to achieve the effect of compressing the gas. This structure is a common structure of piston air compressors and will not be elaborated here.

[0026] A windshield 4 is obliquely arranged on the outer surface of the compressed air chamber 2. The windshield 4 and the compressed air chamber 2 are integrally formed, which is equivalent to flattening the solid body of the traditional cylinder head side wall into a plate-like structure. It will not block the horizontal airflow and is more conducive to the circulation of airflow. The windshield 4 extends from the top of the intake chamber 2a to the bottom of the exhaust chamber 2b, that is, the windshield 4 is obliquely arranged. Through the design of this structure, the flow channel area below the windshield 4 is reduced and the air flow rate is increased; the air pressure above the windshield 4 is reduced, and the external air flows into the flow channel above the windshield 4, which is equivalent to increasing the fluidity of the air on the upper and lower sides of the windshield 4, making it easier to bring out the heat. A number of heat dissipation fins 5 arranged at intervals from each other are vertically arranged on both sides of the compressed air chamber 2 on the windshield 4, and each heat dissipation fin 5 extends from the upper surface of the windshield 4 to its lower surface, which makes more reasonable use of the space where the cylinder head is located, greatly increases the heat dissipation area, and significantly improves the heat dissipation effect.

[0027] To further explain, the upper end surface of the compressed air cavity 2 is vertically provided with heat dissipation teeth 6, and the heat dissipation teeth 6 are symmetrically distributed on the left and right. The heat dissipation teeth 6 are of conventional structure and have no improvement.

[0028] On the other hand, in order to increase the air flow rate entering the heat dissipation teeth 6 and improve the heat dissipation effect, the arrangement structure of the heat dissipation teeth 6 is improved, that is, the heat dissipation teeth 6 on the left and right sides are in a two-stage bending structure along their length direction and form an air flow channel 7 at the same time. The corresponding bending angles between adjacent heat dissipation teeth 6 are different, so that a necking structure 8 is formed at the end of the air flow channel 7, that is, the inlet of the air flow channel 7 is larger than the outlet of the air flow channel 7. Due to the design of the necking structure 8, the cross-section of the air flow channel 7 is reduced, the air flow rate is improved, and the heat dissipation is increased to a certain extent.

[0029] In order to make more reasonable use of the space where the cylinder head is located, a ventilation hole 10 is opened on the wind shield 4 between the innermost cooling fin 5 and the compressed air chamber 2. The ventilation hole 10 is located at the inlet of the air flow. Since the space between the cooling fin 5 and the compressed air chamber 2 will be blocked by the outside of the compressed air chamber 2 to generate turbulence, in order to make the air flow more fluid, a number of ventilation holes 10 are opened at the air entrance in front of the compressed air chamber 2. The ventilation holes 10 are located on the wind shield 4, and the wind shield 4 is tilted. Then, the airflow below will flow upward through the ventilation holes 10, so that the air flow rate on both sides of the cooling fin 5 above the wind shield 4 is increased, and the fluidity of the air is more reasonably utilized.

[0030] Since the heat dissipation fins 5 above the wind shield 4 are easily deformed by collision, in order to prevent their deformation and increase the firmness of the overall structure, a plurality of ribs 11 connecting the two side walls are provided on the upper end surface of the wind shield 4 between adjacent heat dissipation fins 5 .

[0031] In order to reduce the obstruction of the ribs 11 to the airflow, the height of the ribs 11 is gradually increased along the air flow direction.

[0032] Since the above structure is an improvement over the traditional method in which screw holes for fixing the cylinder head to the cylinder are not available, mounting holes 12 are formed between the four outer edges of the compressed air chamber 2 and the wind shield 4, two of which are countersunk structures, and the other two are through-hole structures. Through the structure of the mounting holes 12, the cylinder head can be fixed to the top of the cylinder.

[0033] The corners of the heat dissipation fins 5 are rounded to prevent scratches and increase safety.

[0034] Embodiment 2

[0035] like Figure 5 , Figure 6As shown, compared with the first embodiment, the difference of this embodiment is that a ventilation slot 9 is formed on the wind shield 4 at a position between the two heat dissipation fins 5 and is inclined upward. The function of the ventilation slot 9 is equivalent to the ventilation hole 10 in the first embodiment. Since the wind shield 4 is inclined, the airflow below the wind shield 4 flows upward, and the flow effect of the airflow is more effectively utilized to improve the heat dissipation. The principle is that since the wind shield 4 is inclined downward, the air flow rate below is greater than the air flow rate above, and the pressure is relatively large. There is no obstruction below the flow channel formed by the heat dissipation fins 5, and the air will overflow downward to cause waste. Through the ventilation slot 9, a part of the airflow below is guided to the top of the wind shield 4, which can further improve the heat dissipation.

[0036] On the other hand, the ventilation slot 9 is opened here, and its two sides are directly connected and fixed to the inner wall of the heat sink fin 5, so the firmness of the heat sink fin 5 structure is improved, so there is no need to set the rib 11 in Example 1, that is, the wind shield 4 structure here replaces the rib 11.

[0037] In the above two embodiments, the number of the heat dissipation fins 5 can be adjusted according to the actual size of the cylinder head, but at least two fins are provided. If only one fin is provided, the heat dissipation area is not much different from that of the cylinder head with a traditional structure, and the heat dissipation effect cannot be significantly improved.

[0038] This cylinder head is installed in a two-cylinder or three-cylinder air compressor connected to the same crankcase. Through experiments, it can be found that with a voltage of 350V-360V as the standard, a current of about 13.5A, a speed of the impeller on the pulley of 890 rpm, a room temperature of 18°C, and a running time of 2 hours, the cylinder head of this design has better air flow and improved quietness. The noise here is reduced from the traditional 110 decibels to 90 decibels, the wind energy utilization rate is increased from 51% to 79%, and the surface temperature of the cylinder head is reduced from 140°C to 101°C. After testing, the heat dissipation of this cylinder head is significantly improved under certain external conditions.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0040] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A piston air compressor cylinder head, comprising an integrally formed cylinder head body (1), wherein below the cylinder head body (1) is a compression air chamber (2) cooperating with an end of a cylinder, wherein the interior of the compression air chamber (2) is formed by a partition (3) to form an intake chamber (2a) and an exhaust chamber (2b) respectively connected to the outside, wherein the compression air chamber (2) is characterized in that: A windshield (4) is obliquely provided on the outer surface of the compressed air cavity (2), the windshield (4) extending from the upper side of the air inlet cavity (2a) to the lower side of the air outlet cavity (2b), a plurality of heat dissipation fins (5) arranged in a spaced relationship are vertically provided on both sides of the compressed air cavity (2) on the windshield (4), each heat dissipation fin (5) extending from the upper surface of the windshield (4) to the lower surface thereof; The upper end surface of the compressed air cavity (2) is vertically provided with heat dissipation teeth (6), and the heat dissipation teeth (6) are distributed symmetrically on the left and right; A ventilation hole (10) is provided on the wind shield (4) between the innermost heat dissipation fin (5) and the compressed air cavity (2), and the ventilation hole (10) is located at the inlet of the air flow.

2. The piston air compressor cylinder head according to claim 1, characterized in that: The heat dissipation teeth (6) on the left and right sides are in a two-stage bending structure along their length direction and simultaneously form an air flow channel (7).

3. The piston air compressor cylinder head according to claim 2, characterized in that: The different corresponding bending angles between adjacent heat dissipation teeth (6) form a constricted structure (8) at the end of the air flow channel (7), that is, the inlet of the air flow channel (7) is larger than the outlet of the air flow channel (7).

4. The piston air compressor cylinder head according to claim 1, characterized in that: The position of the wind shield (4) between the two heat dissipation fins (5) is tilted upward to form a ventilation slot (9).

5. The piston air compressor cylinder head according to claim 1, characterized in that: The upper end surface of the wind shield (4) is located between adjacent heat dissipation fins (5) and is provided with a plurality of ribs (11) connected to the two side walls.

6. The piston air compressor cylinder head according to claim 5, characterized in that: The height of the ribs (11) gradually increases along the air flow direction.

7. The piston air compressor cylinder head according to claim 1, characterized in that: Mounting holes (12) are formed between the four outer edges of the compressed air cavity (2) and the wind shield (4), two of which are countersunk hole structures, and the other two are through-hole structures.

8. The piston air compressor cylinder head according to claim 1, characterized in that: The corners of the heat dissipation fins (5) are rounded.

Images