A new compressor relief valve

Abstract

The utility model discloses a novel compressor pressure relief valve belongs to pressure relief valve technical field. A novel compressor pressure relief valve, including bolt main part, the bolt main part inside has installed the cavity, installed cavity from top to bottom detachable installation has support plate, spring and pressure relief element, and spring both ends respectively with support plate and pressure relief element abuts, for providing makes pressure relief element closely and is combined pressure relief pipeline's elastic pretightening force, installed cavity bottom is equipped with pressure relief pipeline, and pressure relief element and pressure relief pipeline top abut and block pressure relief pipeline, and pressure relief pipeline and pressure relief element are separated and complete the pressure relief to the compressor inside, the middle part of bolt main part is equipped with the screw portion, and the screw portion is cooperated with the compressor rear cover thread, and the lower portion of screw portion is equipped with the guide portion, and the guide portion diameter is less than the screw portion, is used for guiding bolt main part to spin into the alignment screw hole center initially, thereby avoids leading to the installation deflection and leads to the bad thread engagement.

Description

Technical Field

[0001] This utility model belongs to the field of pressure relief valve technology, and more specifically, relates to a novel compressor pressure relief valve. Background Technology

[0002] Electric compressors play a vital role as an important component of modern industrial systems and are commonly used in electric vehicles, air conditioning systems, and industrial refrigeration equipment. The pressure relief valve is a key safety component in the compressor, used to release pressure when the system pressure rises abnormally.

[0003] Currently, most electric compressors use pressure relief valve components where the bolt holes lack guidance, meaning the initial bolt angle may not be perfectly perpendicular. Therefore, during manual or automated assembly of the pressure relief valve, misalignment of the bolt holes can lead to issues like aluminum shavings, chipping, or jamming when tightening the bolts, resulting in reduced assembly efficiency and even safety hazards such as seal failure. For example, a pressure relief bolt fastener (CN202223330663.9) disclosed in Chinese invention patent literature uses a multi-integrated pressure relief hole structure and a conical ramp at the bottom of the bolt for quick installation. However, while this design improves installation convenience, it doesn't fundamentally solve the problem of bolt guide deviation during screwing in. Furthermore, under long-term vibration conditions, stress concentration can cause cracking in the pressure relief pipeline, affecting the reliability and service life of the pressure relief valve.

[0004] Therefore, we need a pressure relief valve that is precisely assembled, has a simple structure, and can reliably release pressure. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a new type of compressor pressure relief valve, which improves the alignment accuracy when the bolt body is screwed into the threaded hole by setting a guide part. It has a simple structure and high assembly efficiency, and effectively avoids thread damage caused by misaligned assembly while stabilizing pressure relief.

[0006] This utility model discloses a novel compressor pressure relief valve, comprising a bolt body with an installation cavity inside. The installation cavity is detachably mounted with a support plate, a spring, and a pressure relief element from top to bottom. The internal pressure of the compressor is relieved through the pressure relief element.

[0007] The bottom of the mounting cavity is provided with a pressure relief pipeline. The pressure relief element abuts against the top of the pressure relief pipeline and seals the pressure relief pipeline. The pressure relief pipeline is used to release pressure inside the compressor after being disconnected from the pressure relief element.

[0008] The two ends of the spring abut against the support plate and the pressure relief element respectively, and are used to provide an elastic preload force to make the pressure relief element fit tightly against the pressure relief pipeline, thereby sealing the pressure relief pipeline by the pressure relief element.

[0009] The bolt body has a threaded part in the middle, and the compressor rear cover has a threaded hole. The threaded part and the threaded hole are threadedly engaged. The lower part of the threaded part has a guide part with a diameter smaller than that of the threaded part. The guide part is used to guide the bolt body to be aligned with the center of the threaded hole when it is first screwed in, so as to avoid misalignment during installation, which could lead to poor thread engagement, aluminum chips, or jamming.

[0010] As a further improvement of this utility model, the top of the mounting cavity is provided with a mounting groove, and the support plate is embedded in the mounting groove and has an interference fit with the mounting groove to prevent the support plate from falling off due to the pressure impact of the compressor.

[0011] As a further improvement of this utility model, the bottom of the guide part is provided with an arc-shaped guide part. The arc-shaped guide part makes pre-contact with the thread of the threaded hole and pre-guides the bolt body when it is aligned with the center of the threaded hole, so as to avoid thread misalignment and thus improve assembly efficiency and sealing reliability.

[0012] As a further improvement of this utility model, the pressure relief element includes a support block and a limiting post. The limiting post is fixedly installed on the top of the support block, and a spring is sleeved on the outer periphery of the limiting post. The lower end of the spring abuts against the top of the support block. The outer periphery of the support block is slidably connected to the mounting cavity. The internal pressure of the compressor pushes the bottom of the support block to disengage from the pressure relief pipeline, and the high-pressure gas is discharged to the mounting cavity through the pressure relief pipeline.

[0013] As a further improvement of this utility model, a circular groove is opened at the bottom of the support block, and a sealing gasket is installed at the circular groove. The sealing gasket is tightly fitted to the top of the pressure relief pipe to prevent gas leakage.

[0014] As a further improvement of this utility model, the diameter of the upper region of the pressure relief pipeline gradually increases from bottom to top, which is used to slow down the airflow speed and reduce the impact force of the gas on the pressure relief element, thereby improving the stability of the pressure relief structure and effectively preventing vibration or loosening caused by high-speed airflow impact.

[0015] As a further improvement of this utility model, a conical inclined platform is provided on the outer periphery of the upper region of the pressure relief pipeline to load the radial pressure inside the compressor on the inner wall of the upper region of the pressure relief pipeline, thereby enhancing structural stability.

[0016] As a further improvement of this utility model, a pressure relief hole is opened in the middle of the support plate. The pressure relief gas passes through the mounting cavity and enters the outside through the pressure relief hole, so as to release the internal air pressure of the compressor to the external environment.

[0017] As a further improvement of this utility model, a sealing groove is opened on the top of the bolt body, and a dustproof cover is embedded in the sealing groove. The dustproof cover is used to prevent external impurities from entering the interior of the pressure relief valve, and to prevent external pollutants such as dust and oil from entering the interior of the valve body and causing moving parts to jam or seal failure, thereby ensuring the long-term stable operation of the pressure relief function.

[0018] Compared to existing technologies, the advantages of this utility model are as follows: This novel compressor pressure relief valve uses a pressure relief component located inside the bolt body to stably relieve pressure. Furthermore, by providing a guide section at the lower part of the threaded section and an arc-shaped guide section at the bottom, it significantly improves the alignment accuracy and assembly efficiency when the bolt body is screwed into the threaded hole, while effectively preventing thread damage caused by misalignment during assembly. The gradually expanding diameter design of the upper region of the pressure relief pipeline, combined with the conical inclined platform structure, effectively slows down the airflow speed and reduces the impact stress of high-pressure gas on the pressure relief element, thereby extending the service life of the pressure relief element and improving the stability and reliability of the pressure relief process. The tight fit between the sealing gasket in the circular groove at the bottom of the support block and the top of the pressure relief pipeline ensures the sealing reliability of the pressure relief valve under normal operating conditions, effectively preventing gas leakage inside the compressor. By setting a dustproof cover to close the pressure relief valve under stationary conditions, it prevents external contaminants such as dust and oil from entering the valve body, causing jamming of moving parts or sealing failure, thus ensuring the long-term stable operation of the pressure relief function. Attached Figure Description

[0019] Figure 1 This is a schematic cross-sectional view of a novel compressor pressure relief valve according to the present invention. Figure 2 This is a schematic diagram of the assembly cross-section structure of a novel compressor pressure relief valve according to this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of a novel compressor pressure relief valve according to this utility model.

[0020] Explanation of the labels in the diagram: 1 Bolt body, 11 Mounting groove, 12 Pressure relief pipeline, 13 Threaded part, 14 Guide part, 141 Arc-shaped guide part, 15 Conical inclined platform, 16 Cover groove, 2 Mounting cavity, 3 Support plate, 31 Pressure relief hole, 4 Spring, 5 Pressure relief element, 51 Support block, 511 Circular groove, 52 Limiting post, 53 Sealing gasket, 6 Compressor rear cover, 61 Threaded hole, 7 Dustproof cover. Detailed Implementation

[0021] Specific Implementation Example 1: Please refer to... Figures 1-3 A novel compressor pressure relief valve includes a bolt body 1, with an installation cavity 2 inside the bolt body 1. The installation cavity 2 is detachably mounted with a support plate 3, a spring 4, and a pressure relief element 5 from top to bottom. The internal pressure of the compressor is relieved through the pressure relief element 5.

[0022] like Figure 2 The bolt body 1 shown has a threaded portion 13 in the middle, and the compressor rear cover 6 has a threaded hole 61. The threaded portion 13 is threaded into the threaded hole 61; the lower part of the threaded portion 13 has a guide portion 14, such as... Figure 3 The guide portion 14 shown has a smaller diameter than the threaded portion 13. It is used to guide the bolt body 1 to be initially aligned with the center of the threaded hole 61 during screwing in, thereby avoiding misalignment during installation, which could lead to poor thread engagement, aluminum chips, or jamming.

[0023] The bottom of the mounting cavity 2 is provided with a pressure relief pipe 12. The pressure relief element 5 abuts against the top of the pressure relief pipe 12 and seals the pressure relief pipe 12. The pressure relief pipe 12 is used to release pressure inside the compressor after it is disconnected from the pressure relief element 5.

[0024] The two ends of the spring 4 abut against the support plate 3 and the pressure relief element 5 respectively, and are used to provide an elastic preload force to make the pressure relief element 5 fit tightly against the pressure relief pipeline 12, so that the pressure relief pipeline 12 is sealed by the pressure relief element 5.

[0025] Specifically, the top of the mounting cavity 2 is provided with a mounting groove 11, and the support plate 3 is embedded inside the mounting groove 11 and is interference-fitted with the mounting groove 11 to prevent the support plate 3 from falling off due to the pressure impact of the compressor.

[0026] Specifically, such as Figure 3 The bottom of the guide portion 14 shown is provided with an arc-shaped guide portion 141. The arc-shaped guide portion 141 makes pre-contact with the thread of the threaded hole 61 and pre-guides the bolt body 1 when it is aligned with the center of the threaded hole 61. This is to avoid thread misalignment and thus improve assembly efficiency and sealing reliability.

[0027] Specifically, the pressure relief element 5 includes a support block 51 and a limiting post 52. The limiting post 52 is fixedly installed on the top of the support block 51, and the spring 4 is sleeved on the outer periphery of the limiting post 52. The lower end of the spring 4 abuts against the top of the support block 51. The outer periphery of the support block 51 is slidably connected to the mounting cavity 2. The internal pressure of the compressor pushes the bottom of the support block 51 to disengage from the pressure relief pipeline 12, and the high-pressure gas is discharged to the mounting cavity 2 through the pressure relief pipeline 12.

[0028] Specifically, the support block 51 has a circular groove 511 at its bottom, and a sealing gasket 53 is installed in the circular groove 511. The sealing gasket 53 is tightly fitted to the top of the pressure relief pipe 12 to prevent gas leakage.

[0029] Specifically, the diameter of the upper region of the pressure relief pipe 12 gradually increases from bottom to top, which is used to slow down the airflow speed and reduce the impact force of the gas on the support block 51, thereby improving the stability of the pressure relief structure 5 and effectively preventing vibration or loosening caused by high-speed airflow impact.

[0030] Specifically, a conical ramp 15 is provided on the outer periphery of the upper region of the pressure relief pipe 12 to load the radial pressure inside the compressor on the inner wall of the upper region of the pressure relief pipe 12, thereby enhancing structural stability.

[0031] Specifically, a pressure relief hole 31 is opened in the middle of the support plate 3. The pressure relief gas passes through the mounting cavity 2 and enters the outside through the pressure relief hole 31, so as to release the internal air pressure of the compressor to the external environment.

[0032] Specifically, the top of the bolt body 1 has a cover groove 16, and a dust cover 7 is embedded inside the cover groove 16. The dust cover 7 is used to prevent external impurities from entering the pressure relief valve through the bolt body 1, so as to prevent external pollutants such as dust and oil from entering the valve body and causing moving parts to jam or seal failure, thereby ensuring the long-term stable operation of the pressure relief function.

[0033] During use, align the guide part of the bolt body 1 with the center of the threaded hole 61 and slowly screw it into the threaded body 1. Through the pre-alignment effect of the guide part 14 and the arc-shaped guide part 141, ensure that the threaded part 13 and the threaded hole 61 are accurately engaged and avoid eccentric screwing. During the tightening process, the sealing gasket 53 is pressed tightly against the top of the pressure relief pipe 12 to form a reliable seal. When the internal pressure of the compressor rises abnormally, the gas pushes the support block 51 to move upward against the elastic force of the spring 4, so that the sealing gasket 53 is disengaged from the pressure relief pipe 12. The high-pressure gas is discharged in sequence through the pressure relief pipe 12, the mounting cavity 2 and the pressure relief hole 31 to achieve safe pressure relief. After the pressure relief is completed, the spring 4 rebounds and pushes the support block 51 to reset, and the sealing gasket 53 presses the top of the pressure relief pipe 12 again to restore the sealing state. At the same time, when not in use, the dust cover 7 and the cover groove 16 fit tightly to ensure that dust in the external environment cannot enter the interior of the pressure relief valve, thereby keeping the internal structure of the pressure relief valve clean and stable.

[0034] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A novel compressor pressure relief valve, comprising a bolt body (1), characterized in that, The bolt body (1) has an installation cavity (2) inside, and the installation cavity (2) is detachably installed with a support plate (3), a spring (4) and a pressure relief element (5) from top to bottom. The bottom of the mounting cavity (2) is provided with a pressure relief pipe (12), and the pressure relief element (5) abuts against the top of the pressure relief pipe (12). The pressure relief pipe (12) is used to release pressure after being separated from the pressure relief element (5). The two ends of the spring (4) abut against the support plate (3) and the pressure relief element (5) respectively, and are used to provide an elastic preload force to make the pressure relief element (5) fit tightly against the pressure relief pipeline (12); The bolt body (1) has a threaded part (13) in the middle, and the compressor back cover (6) has a threaded hole (61). The threaded part (13) and the threaded hole (61) are threaded together. The threaded part (13) has a guide part (14) at the bottom. The diameter of the guide part (14) is smaller than that of the threaded part (13), which is used to guide the bolt body (1) to be screwed into the center of the initial aligned threaded hole (61).

2. The novel compressor pressure relief valve according to claim 1, characterized in that: The bottom of the guide part (14) is provided with an arc-shaped guide part (141). The arc-shaped guide part (141) is in pre-contact with the thread of the threaded hole (61) and is pre-guided when the bolt body (1) is aligned with the center of the threaded hole (61) to avoid thread misalignment.

3. A novel compressor pressure relief valve according to claim 1, characterized in that: The mounting cavity (2) is provided with a mounting groove (11) at the top, and the support plate (3) is embedded inside the mounting groove (11) and has an interference fit with the mounting groove (11).

4. A novel compressor pressure relief valve according to claim 1, characterized in that, The pressure relief element (5) includes a support block (51) and a limiting post (52). The limiting post (52) is fixedly installed on the top of the support block (51). The spring (4) is sleeved on the outer periphery of the limiting post (52). The lower end of the spring (4) abuts against the top of the support block (51). The outer periphery of the support block (51) is slidably connected to the mounting cavity (2). The internal pressure of the compressor pushes the bottom of the support block (51) to disengage from the pressure relief pipeline (12). The gas is discharged to the mounting cavity (2) through the pressure relief pipeline (12).

5. A novel compressor pressure relief valve according to claim 4, characterized in that, The support block (51) has a circular groove (511) at the bottom, and a sealing gasket (53) is installed at the circular groove (511). The sealing gasket (53) is tightly fitted to the top of the pressure relief pipe (12) to prevent gas leakage.

6. A novel compressor pressure relief valve according to claim 1, characterized in that, The diameter of the upper region of the pressure relief pipe (12) gradually increases from bottom to top, which is used to slow down the airflow speed and reduce the impact force of the gas on the pressure relief element (5).

7. A novel compressor pressure relief valve according to claim 6, characterized in that, The upper region of the pressure relief pipeline (12) is provided with a conical inclined platform (15) for loading the radial pressure inside the compressor on the inner wall of the upper region of the pressure relief pipeline (12).

8. A novel compressor pressure relief valve according to claim 3, characterized in that, The support plate (3) has a pressure relief hole (31) in the middle, and the pressure relief gas enters the outside through the pressure relief hole (31) through the mounting cavity (2).

9. A novel compressor pressure relief valve according to claim 1, characterized in that: The bolt body (1) has a sealing groove (16) on the top, and a dustproof cover (7) is embedded inside the sealing groove (16). The dustproof cover (7) is used to prevent external impurities from entering the pressure relief valve.

Images