Heat insulation structure of air compressor
By designing an independent air intake channel and a combination of rubber heat insulation components in the air compressor, the problem of high intake temperature is solved, resulting in more efficient cylinder operation and reduced noise.
Patent Information
- Application Number
- CN202520156430.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-22
AI Technical Summary
The high intake temperature of the existing air compressor affects the operating efficiency of the equipment.
Design a heat insulation structure for an air compressor. By setting an intake channel that is relatively independent from the cylinder, and using a combination of heat insulation components and heat dissipation fins, the influence of cylinder heat on the intake is reduced, and noise is reduced by using rubber heat insulation components.
It effectively reduces the intake air temperature, improves the working and operating efficiency of the cylinder, and reduces noise.
Smart Images
Figure CN223621756U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air compressor technology, and specifically refers to a heat insulation structure for an air compressor. Background Technology
[0002] A reciprocating compressor uses a piston that reciprocates within a cylinder. The space enclosed by the piston, cylinder wall, cylinder head, and piston rings forms the compression chamber. During intake, the intake valve opens, allowing gas to enter the compression chamber. During compression, the piston moves upward, compressing the gas within the chamber. During exhaust, the exhaust valve opens, releasing the compressed gas. Heat is generated during the compression process, and existing technologies include structures for cooling the cylinder and cylinder head. For example, an oil-free air compressor (application number 2015100005298) uses cooling fins on the outer side of the cylinder body, with the intake passage running from the fan → casing → air filter → inner cavity of the housing → piston → cylinder. However, because the inner cavity of the housing is directly connected to the cylinder cavity and directly to the intake, the temperature inside the cylinder is relatively high, leading to a high intake temperature and consequently, excessively high compressed gas temperature, affecting equipment operation and efficiency. Utility Model Content
[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a heat insulation structure for an air compressor. The objective of this invention is to reduce the intake air temperature and improve the operating efficiency of the air compressor.
[0004] The objective of this utility model can be achieved through the following technical solution: A heat insulation structure for an air compressor includes a crankcase with a receiving cavity, a cylinder fixedly connected to the crankcase, a valve seat fixedly connected to the cylinder, a cylinder head fixedly connected to the valve seat, a reciprocating piston inside the cylinder, an air inlet protruding outward from the side of the crankcase, an air inlet having an air inlet hole communicating with the receiving cavity, an air passage and an air outlet protruding from both sides of the valve seat, an air passage having an air passage hole, and an air outlet having an air outlet hole. The air passage, air outlet, and air inlet are all located outside the cylinder, and a heat insulation component is sealed and fixedly provided between the air passage and the air inlet, the heat insulation component having a heat insulation hole. This solution sets up an intake channel that is relatively independent of the cylinder. The intake channel consists of a receiving cavity, an intake port, a heat insulation port, and an air passage. The intake channel is an internal intake channel that is independent of the cylinder. This prevents the gas in the intake channel from entering the cylinder along the cylinder wall, reduces the impact of the cylinder's heat on the intake channel, lowers the temperature of the gas entering the cylinder, and improves the cylinder's working efficiency.
[0005] Furthermore, the heat insulation component is positioned opposite to the cylinder, with a gap between the outer peripheral surface of the heat insulation component and the outer peripheral surface of the cylinder. The cylinder typically has heat dissipation fins on its outer periphery, and the heat insulation component and the heat dissipation fins do not touch. The gap between the outer peripheral surface of the heat insulation component and the outer peripheral surface of the cylinder helps to dissipate heat from the cylinder and prevents the cylinder's temperature from being transferred to the intake passage, thereby reducing the intake temperature and improving the cylinder's operating efficiency.
[0006] Furthermore, the heat insulation component is made of rubber. Rubber has good heat insulation properties, and its reversible deformation can reduce noise in the air intake channel.
[0007] Furthermore, the cylinder head is provided with a vent groove with an opening facing the valve seat, and the vent hole is connected to the vent groove. An intake valve and an exhaust valve are fixedly connected to the valve seat. The intake valve is located inside the cylinder, and the exhaust valve is located inside the vent groove. The intake hole is connected to the heat insulation hole and then to the vent groove. The vent groove is connected to the exhaust hole.
[0008] Furthermore, the crankcase is provided with two cylinders on the top and bottom. A drive motor is also fixed on one side of the crankcase perpendicular to the two cylinders. The drive motor includes a motor shaft, one end of which extends into the receiving cavity. Two connecting rods are rotatably and fixedly connected to the motor shaft, and a piston is fixedly connected to the end of the connecting rod away from the motor shaft.
[0009] Furthermore, two eccentric wheels are fixedly connected to the motor shaft, with bearings fixedly connected to the outside of the eccentric wheels, and connecting rods fixedly connected to the outside of the bearings. The centers of the two eccentric wheels are located on opposite sides of the motor shaft. This design uses the motor shaft to drive two pistons to move upward or downward simultaneously, allowing the pistons to simultaneously fill and empty the cylinders with gas. This significantly increases the airflow rate in and out of the air storage chamber, reduces the heat transfer rate between gases, and the rapid and large-volume air exchange can remove heat from the air compressor, achieving a cooling effect.
[0010] Compared with the prior art, the technical effects of this utility model are as follows: This solution sets up an intake channel that is relatively independent from the cylinder. The intake channel consists of a receiving cavity, an intake hole, a heat insulation hole, and an air passage hole. The intake channel is an internal intake channel that is relatively independent from the cylinder. This prevents the gas in the intake channel from entering the cylinder along the cylinder wall, reduces the impact of the cylinder's heat on it, lowers the temperature of the gas entering the cylinder, and improves the working efficiency of the cylinder. Attached Figure Description
[0011] Figure 1 This is a perspective view of the utility model.
[0012] Figure 2 This is a perspective view of the crankcase of this utility model.
[0013] Figure 3 This is a stepped sectional view of the present invention.
[0014] Figure 4 This is a perspective view of the valve seat of this utility model.
[0015] Figure 5 This is a cross-sectional view of the compression component of this utility model.
[0016] Drawing number markings: 1. Crankcase; 1a. Intake section; 101. Receiving cavity; 102. Intake port; 2. Cylinder; 3. Valve seat; 3a. Exhaust section; 3b. Exhaust section; 301. Exhaust port; 302. Exhaust port; 4. Cylinder head; 401. Vent groove; 5. Piston; 6. Heat insulation component; 601. Heat insulation hole; 7. Drive motor; 7a. Motor shaft; 8. Connecting rod; 9. Eccentric wheel; 10. Bearing; 11. Intake valve; 12. Exhaust valve. Detailed Implementation
[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0018] It should be noted that the descriptions of "up", "down", "left", "right", "top", "bottom", etc. in this utility model are defined based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] according to Figures 1 to 5 As shown, a heat insulation structure for an air compressor includes a crankcase 1 with a receiving cavity 101. The crankcase 1 has an air inlet communicating with the outside. A cylinder 2 is fixedly connected to the crankcase 1. A valve seat 3 is fixedly connected to the cylinder 2. A cylinder head 4 is fixedly connected to the valve seat 3. A reciprocating piston 5 is located inside the cylinder 2. Two cylinders 2 are arranged vertically on the crankcase 1, meaning that the crankcase 1 connects two sets of compression assemblies. The compression assembly consists of cylinders 2, pistons 5, connecting rods 8, and eccentric wheels 9. The two cylinders 2 are arranged vertically on both sides of the crankcase 1. A drive motor 7 is also fixedly mounted on one side of the crankcase 1 perpendicular to the two cylinders 2. The drive motor 7 includes a motor shaft 7a. One end of the motor shaft 7a extends into the receiving cavity 101. Two connecting rods 8 are rotatably and fixedly connected to the motor shaft 7a. The end of the connecting rod 8 away from the motor shaft 7a is fixedly connected to the piston 5. Two eccentric wheels 9 are fixedly connected to the motor shaft 7a. Bearings 10 are fixedly connected to the outer surfaces of the eccentric wheels 9, and connecting rods 8 are fixedly connected to the outer surfaces of the bearings 10. The centers of the two eccentric wheels 9 are located on opposite sides of the motor shaft 7a. The working principle is that the motor shaft 7a drives two pistons 5 to move upwards or downwards simultaneously, causing the pistons 5 to simultaneously fill and vent the gas in the cylinder 2. This greatly increases the airflow rate in and out of the gas storage chamber, reduces the heat transfer rate between gases, and lowers the temperature of the gas in the intake channel.
[0020] The crankcase 1 has two outwardly protruding air intake sections 1a, each with an air intake hole 102 communicating with the receiving cavity 101. The valve seat 3 has two protruding air passage sections 3a and 3b on either side. The air passage section 3a has an air passage hole 301, and the 3b has an 302. The air passage section 3a, 3b, and air intake section 1a are all located outside the cylinder 2. A heat insulation component 6 is sealed and fixed between the air passage section 3a and the air intake section 1a, and the heat insulation component 6 has a heat insulation hole 601. Fixing bolts pass through the cylinder head 4 and valve seat 3 in sequence and are then fixedly connected to the crankcase 1. The cylinder 2 and the heat insulation component 6 are both fixedly located between the valve seat 3 and the crankcase 1. The heat insulation component 6 is positioned opposite the cylinder 2, and there is a gap between the outer circumferential surface of the heat insulation component 6 and the outer circumferential surface of the cylinder 2. The cylinder 2 typically has cooling fins on its outer periphery. The heat insulation component 6 and the cooling fins do not touch. The gap between the outer periphery of the heat insulation component 6 and the outer periphery of the cylinder 2 helps dissipate heat from the cylinder 2 and prevents heat transfer from the cylinder 2 into the intake passage, thus reducing the intake temperature and improving the operating efficiency of the cylinder 2. The heat insulation component 6 is made of rubber. Rubber has good heat insulation properties, and its reversible deformation can reduce noise in the intake passage. The cylinder head 4 has a vent groove 401 opening towards the valve seat 3. The vent hole 301 connects to the vent groove 401. The valve seat 3 is fixedly connected to an intake valve 11 and an exhaust valve 12. The intake valve 11 is located inside the cylinder 2, and the exhaust valve 12 is located inside the vent groove 401. The intake hole 102 connects to the heat insulation hole 601 and then to the vent groove 401. The vent groove 401 connects to the exhaust hole 302. By setting an intake channel that is relatively independent from cylinder 2, the intake channel is composed of a receiving cavity 101, an intake hole 102, a heat insulation hole 601, an air passage hole 301 and a ventilation groove 401. The intake channel is an internal intake channel that is relatively independent from cylinder 2, which prevents the gas in the intake channel from entering cylinder 2 along the cylinder 2 wall, reduces the impact of the heat of cylinder 2 on it, lowers the temperature of the gas entering cylinder 2, and improves the working efficiency of cylinder 2. The overall structure is compact and small in size.
[0021] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.
Claims
1. A heat insulation structure for an air compressor, comprising a crankcase (1) having a receiving cavity (101), a cylinder (2) fixedly connected to the crankcase (1), a valve seat (3) fixedly connected to the cylinder (2), a cylinder head (4) fixedly connected to the valve seat (3), and a reciprocating piston (5) inside the cylinder (2), characterized in that: The crankcase (1) has an air intake section (1a) protruding outward on its side. The air intake section (1a) has an air intake hole (102) communicating with the receiving cavity (101). The valve seat (3) has an air passage section (3a) and an air outlet section (3b) protruding from its two sides respectively. The air passage section (3a) has an air passage hole (301), and the air outlet section (3b) has an air outlet hole (302). The air passage section (3a), the air outlet section (3b), and the air intake section (1a) are all located outside the cylinder (2). A heat insulation component (6) is sealed and fixed between the air passage section (3a) and the air intake section (1a). The heat insulation component (6) has a heat insulation hole (601).
2. The heat insulation structure of an air compressor according to claim 1, characterized in that: The heat insulation component (6) is arranged opposite to the cylinder (2), and there is a gap between the outer peripheral surface of the heat insulation component (6) and the outer peripheral surface of the cylinder (2).
3. The heat insulation structure of an air compressor according to claim 1, characterized in that: The heat insulation component (6) is made of rubber.
4. The heat insulation structure of an air compressor according to claim 1, 2, or 3, characterized in that: The cylinder head (4) is provided with a ventilation groove (401) with an opening facing the valve seat (3). The air passage (301) is connected to the ventilation groove (401). The valve seat (3) is fixedly connected with an intake valve and an exhaust valve. The intake valve is located inside the cylinder (2), and the exhaust valve is located inside the ventilation groove (401). The intake hole (102) is connected to the heat insulation hole (601) and then to the ventilation groove (401). The ventilation groove (401) is connected to the exhaust hole (302).
5. The heat insulation structure of an air compressor according to claim 4, characterized in that: The crankcase (1) is provided with two cylinders (2) on its upper and lower sides. A drive motor (7) is also fixed on one side of the crankcase (1) perpendicular to the two cylinders (2). The drive motor (7) includes a motor shaft (7a). One end of the motor shaft (7a) extends into the receiving cavity (101). Two connecting rods (8) are rotatably and fixedly connected on the motor shaft (7a). A piston (5) is fixedly connected to the end of the connecting rod (8) away from the motor shaft (7a).
6. The heat insulation structure of an air compressor according to claim 5, characterized in that: Two eccentric wheels (9) are fixedly connected to the motor shaft (7a). The eccentric wheels (9) are fixedly connected to the bearing (10), and the bearing (10) is fixedly connected to the connecting rod (8). The center positions of the two eccentric wheels (9) are located on both sides of the motor shaft (7a).