Crankcase with heat dissipation structure

Abstract

A crankcase with a heat dissipation structure comprises a crankcase body, a motor and an air cylinder, a rotating shaft of the motor is connected with fan blades, a valve plate is installed above the air cylinder, a cylinder cover is arranged above the air cylinder, the crankcase body comprises an inner cavity channel and an outer cavity channel, a crank and a connecting rod are installed in the inner cavity channel, one end of the outer cavity channel is communicated with a stator of the motor, and the other end of the outer cavity channel is communicated with a piston of the motor. And the other end of the outer cavity channel is communicated with the cylinder cover or the valve plate. According to the crankcase with the heat dissipation structure, the rotating shaft of the motor rotates to drive the fan blades to rotate, so that the fan blades not only dissipate heat of the motor coil, but also dissipate heat of the cylinder cover, the valve plate and the air cylinder, and the heat dissipation effect is uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a crankcase with a heat dissipation structure. Background Art

[0002] Air compressor is called air compressor for short. It is the main body of the air source device. It is a device that converts the mechanical energy of the prime mover into gas pressure energy. Traditional air compressors generally include a crankcase. One end of the motor shaft extends into the crankcase. The crankcase is equipped with connecting rods and fan blades mounted on the shaft. The outside of the crankcase is connected to a wind cover. The side of the crankcase facing the motor is hollowed out. When the air compressor is working, the connecting rod drives the piston to move up and down to realize the air intake of the air compressor. The fan blades rotate to dissipate heat and cool the motor. In addition, when the traditional air compressor is working, there is a lot of noise during the intake process.

[0003] Chinese invention patent CN106014925A discloses a novel silent oil-free air compressor, including a base and a crankcase fixedly connected to the base, a plurality of cylinders are arranged on the crankcase, the cylinders are composed of a cylinder body, a cylinder head and a piston, a crankshaft is arranged in the crankcase, the crankshaft is respectively connected to the pistons in the plurality of cylinders through a plurality of connecting rods, an air inlet hole connected to the interior of the crankcase is opened on the side wall of the crankcase, an exhaust hole is opened on the side wall of the cylinder head, an air flow channel connected to the interior of the crankcase is provided on the outer peripheral wall of the cylinder body, an upper valve plate and a lower valve plate are arranged between the cylinder body and the cylinder head, two valve plates 1 are arranged on the lower surface of the upper valve plate, two valve plates 2 are arranged on the upper surface of the lower valve plate, and air flow holes connected to the air flow channel are opened at corresponding positions of the upper valve plate and the lower valve plate.

[0004] But the problem is that the fan blades can only dissipate heat for the motor, and the cylinder head, valve plate, and cylinder temperature of the air compressor cannot be effectively dissipated, and the temperature is high. At the same time, although ventilation ducts are set around the crankcase, the air cannot be evenly discharged to dissipate heat, so that the heat around the crankcase cannot be discharged quickly, and the motor heat dissipation efficiency is poor. Utility Model Content

[0005] Technical issues to be solved

[0006] In view of this, the embodiments of the present specification provide a crankcase with a heat dissipation structure that can dissipate heat to the cylinder, valve plate and cylinder head and can evenly dissipate air for heat dissipation.

[0007] Technical Solution

[0008] In order to solve the technical problems, the utility model provides the following technical solutions: a crankcase with a heat dissipation structure, comprising a crankcase body, a motor and a cylinder, a fan blade is connected to the rotating shaft of the motor, a valve plate is installed above the cylinder, a cylinder head is arranged above the cylinder, the crankcase body comprises an inner cavity and an outer cavity, a crank and a connecting rod are installed in the inner cavity, one end of the outer cavity is connected to the stator of the motor, and the other end of the outer cavity is connected to the cylinder head or the valve plate.

[0009] Compared with the prior art, the utility model has the advantages that the rotation of the motor shaft drives the fan blades to rotate, so that the fan blades can dissipate heat to the motor coil, and at the same time dissipate heat to the cylinder cover, valve plate and cylinder, and the heat dissipation effect is uniform.

[0010] In some embodiments, the outer cavity is an L-shaped channel, and the outer cavity wraps the inner cavity. Through the improvement, the outer cavity is an L-shaped channel, so that the wind passes through the crankcase body and is then directed to the cylinder, valve plate and cylinder head, realizing top air outlet and good heat dissipation effect.

[0011] In some embodiments, a bearing is fixed on the crankcase body, the bearing is mounted on the rotating shaft of the motor, and a first sealing ring is installed on one side of the bearing. Through the improvement, the bearing, the rotating shaft of the motor and the sealing ring are used to achieve the closure of one end of the inner cavity, and the sealing is stronger.

[0012] In some embodiments, a second sealing ring is installed between the cylinder and the crankcase body. Through the improvement, the sealing performance of the cylinder and the crankcase body is better.

[0013] In some embodiments, a third sealing ring is installed on the inner cavity. Through the improvement, the sealing performance of the inner cavity is improved.

[0014] In some embodiments, a shell is provided on the outside of the motor, and a plurality of openings are provided on the shell. Through the improvement, when the fan blades rotate, the external airflow enters the crankcase body through the openings.

[0015] In some embodiments, a filter element is disposed in the outer cavity. Through the above-described improvement, the filter element can effectively filter dust and debris from the outside and the outer cavity.

[0016] In some embodiments, a silencer is provided in the outer cavity, and the two ends of the silencer are respectively connected to the inner cavity and the filter element. Through the improvement, the setting of the silencer can reduce the noise generated by the crankcase body and the connecting rod movement.

[0017] In some embodiments, the crankcase body is composed of a main case body and a case end cover. Through the above improvements, the crankcase body is safer.

[0018] In some embodiments, the cylinder, valve plate and cylinder head are of multiple designs. Through the improvements, the air compressor can work more efficiently.

[0019] Beneficial Effects

[0020] The utility model provides a crankcase with a heat dissipation structure. The rotation of the motor shaft drives the fan blades to rotate, so that the fan blades can dissipate heat for the motor coil and dissipate heat for the cylinder cover, valve plate and cylinder top air outlet through the L-shaped outer cavity. The heat dissipation effect is very good and uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0024] Figure 3 It is a schematic diagram of the explosion structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the filter element and the muffler channel of the utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the utility model viewed from other angles;

[0027] Figure 6 It is a structural schematic diagram of the inner cavity section of the utility model.

[0028] In the figure: 1. crankcase body; 1.1. inner cavity; 1.2. outer cavity; 1.3. air inlet; 1.4. main case; 1.5. case end cover; 2. motor; 2.1. stator; 2.2. rotating shaft; 3. cylinder; 4. valve plate; 5. cylinder head; 6. crank; 7. connecting rod; 8. fan blade; 9. bearing; 10. first sealing ring; 11. second sealing ring; 12. outer casing; 12.1. opening; 13. filter element; 14. silencer; 15. third sealing ring. DETAILED DESCRIPTION

[0029] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0031] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0032] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0033] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0034] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0035] See also Figure 1-6In this embodiment: a crankcase with a heat dissipation structure includes a crankcase body 1, a motor 2 and a cylinder 3, a fan blade 8 is connected to the rotating shaft 2.2 of the motor 2, a valve plate 4 is installed above the cylinder 3, and a cylinder head 5 is arranged above the cylinder 3, the crankcase body 1 includes an inner cavity 1.1 and an outer cavity 1.2, a crank 6 and a connecting rod 7 are installed in the inner cavity 1.1, one end of the outer cavity 1.2 is connected to the stator 2.1 of the motor 2 or is connected to the stator 2.1 through a connector, and the other end of the outer cavity 1.2 is connected to the cylinder head 5 or the valve plate 4.

[0036] The rotation of the motor shaft 2.2 drives the fan blade 8 to rotate, so that the fan blade 8 can dissipate heat to the motor 2 coil, and at the same time dissipate heat to the cylinder cover 5, the valve plate 4 and the cylinder 3, and the heat dissipation effect is uniform.

[0037] It should be pointed out that the connector is not the inventive point of this embodiment and will not be described in detail in this embodiment.

[0038] In some embodiments, Figure 2-Figure 6 As shown, the outer cavity 1.2 is an L-shaped channel, and the outer cavity 1.2 wraps the inner cavity 1.1. It should be noted that, through the outer cavity 1.2 forming an L-shaped channel, the wind passes through the crankcase body 1 and is then guided to the cylinder 3, the valve plate 4, and the cylinder head 5, realizing top air outlet and good heat dissipation effect.

[0039] In some embodiments, Figure 2-Figure 3 As shown, a bearing 9 is fixed on the crankcase body 1, and the bearing 9 is installed on the rotating shaft of the motor 2. A first sealing ring 10 is installed on one side of the bearing 9. It should be noted that the bearing 9, the rotating shaft of the motor 2 and the sealing ring are used to achieve the closure of one end of the inner cavity 1.1, and the sealing performance is stronger.

[0040] In some embodiments, Figure 2-Figure 3 As shown, a second sealing ring 11 is installed between the cylinder 3 and the crankcase body 1. It should be noted that the second sealing ring 11 makes the cylinder 3 and the crankcase body 1 more sealed.

[0041] In some embodiments, Figure 2-Figure 3 As shown, a third sealing ring 15 is installed on the inner cavity 1.1. It should be noted that the third sealing ring 15 makes the inner cavity 1.1 more sealed.

[0042] In some embodiments, Figure 1 As shown, the motor 2 is provided with a housing 12 on the outside, and a plurality of openings 12.1 are provided on the housing 12. It should be noted that the openings 12.1 are provided so that when the fan blades 8 rotate, the external airflow enters the crankcase body 1 through the openings 12.1.

[0043] In some embodiments, Figure 3-Figure 4As shown, a filter element 13 is disposed in the outer cavity 1.2. Through the above-mentioned improvement, the filter element 13 can effectively filter dust and debris from the outside and the outer cavity 1.2.

[0044] In some embodiments, Figure 3-Figure 4 As shown, a silencer 14 is provided in the outer cavity 1.2, and the two ends of the silencer 14 are respectively connected to the inner cavity 1.1 and the filter element 13. It should be noted that the setting of the silencer 14 reduces the noise generated by the crankcase body 1 and the movement of the connecting rod 7.

[0045] In some embodiments, Figure 5 As shown, an air inlet 1.3 is provided on the inner cavity 1.1.

[0046] In some embodiments, Figure 3 As shown, the crankcase body 1 is composed of a main case body 1.4 and a case end cover 1.5. It should be noted that the crankcase body 1 is safer.

[0047] Working principle: Motor 2 drives fan blade 8 to rotate, so that external cold air enters into the air compressor through opening 12.1, dissipates heat for motor 2, and drives air in inner cavity 1.1 to flow from air inlet 1.3 to the outside of valve plate 4 when reciprocating motion is performed through connecting rod 7, thereby dissipating heat for bearing 9 of motor 2 and bearing 9 between crank 6 and connecting rod 7.

[0048] The air discharged from the cylinder 3, valve plate 4 and cylinder head 5 is cooled through the external cavity 1.2, which reduces the temperature by 20 degrees Celsius or more than that of a conventional air compressor.

[0049] The wall surface of the cylinder 3 and the valve plate 4 of the utility model are cooled by wind to a temperature lower than 130 degrees Celsius, the outer surface temperature of the cylinder cover 5 is controlled within 100 degrees Celsius, and the coil temperature of the motor 2 is more than 10 degrees Celsius lower than that of the conventional air compressor structure.

[0050] In other embodiments, the cylinder 3, the valve plate 4 and the cylinder head 5 are of multiple designs. It should be noted that the air compressor has a higher working efficiency.

[0051] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0052] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A crankcase with a heat dissipation structure, comprising a crankcase body (1), a motor (2) and a cylinder (3), wherein a fan blade (8) is connected to a rotating shaft (2.2) of the motor (2), a valve plate (4) is installed above the cylinder (3), and a cylinder cover (5) is arranged above the cylinder (3), characterized in that: The crankcase body (1) comprises an inner cavity (1.1) and an outer cavity (1.2), wherein a crank (6) and a connecting rod (7) are installed in the inner cavity (1.1), one end of the outer cavity (1.2) is connected to a stator (2.1) of the motor (2), and the other end of the outer cavity (1.2) is connected to the cylinder head (5) or the valve plate (4).

2. The crankcase with a heat dissipation structure according to claim 1, characterized in that: The outer cavity (1.2) is an L-shaped channel, and the outer cavity (1.2) wraps the inner cavity (1.1).

3. The crankcase with a heat dissipation structure according to claim 1, characterized in that: A bearing (9) is fixed on the crankcase body (1), the bearing (9) is mounted on the rotating shaft of the motor (2), and a first sealing ring (10) is mounted on one side of the bearing (9).

4. The crankcase with a heat dissipation structure according to claim 1, characterized in that: A second sealing ring (11) is installed between the cylinder (3) and the crankcase body (1).

5. The crankcase with a heat dissipation structure according to claim 1, characterized in that: A third sealing ring (15) is installed on the inner cavity (1.1).

6. The crankcase with a heat dissipation structure according to claim 1, characterized in that: The motor (2) is externally covered with a housing (12), and the housing (12) is provided with a plurality of openings (12.1).

7. The crankcase with a heat dissipation structure according to claim 1, characterized in that: A filter element (13) is arranged in the outer cavity (1.2).

8. The crankcase with a heat dissipation structure according to claim 7, characterized in that: A silencer channel (14) is provided in the outer cavity channel (1.2), and two ends of the silencer channel (14) are respectively connected to the inner cavity channel (1.1) and the filter element (13).

9. The crankcase with a heat dissipation structure according to claim 1, characterized in that: The crankcase body (1) is composed of a main case body (1.4) and a case end cover (1.5).

10. The crankcase with a heat dissipation structure according to claim 1, characterized in that: The cylinder (3), the valve plate (4) and the cylinder cover (5) are of multiple designs.

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