Compressor with internal pressure relief function
By connecting the high-pressure chamber and the low-pressure chamber on the stationary scroll plate with a one-way valve assembly inside the compressor, the safety hazards of oil and refrigerant leakage in the prior art are solved, and a safe and stable internal pressure relief effect is achieved.
Patent Information
- Application Number
- CN202520389013.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-03-06
AI Technical Summary
The existing compressor depressurization method poses a risk of flammable oil and refrigerant being sprayed out, resulting in safety hazards.
It adopts an internal pressure relief structure, using a one-way valve assembly on the stationary scroll plate to connect the high-pressure chamber and the low-pressure chamber, and achieves pressure relief through the cooperation of steel balls and springs to prevent oil and refrigerant leakage.
This design achieves internal pressure relief in the compressor, reducing the risk of fire, simplifying the structural layout, reducing parts costs and assembly complexity, and improving the stability and safety of the pressure relief structure.
Smart Images
Figure CN223662065U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to compressor technical field, more specifically, relate to a compressor of internal pressure relief. BACKGROUND
[0002] Under the circumstances of energy decreasing and environmental pollution increasing, new energy vehicles are supported by the country due to their environmental protection and energy saving characteristics, and electric compressors, as an important part of new energy vehicles, play a very important role, and as a core component of new energy vehicle air conditioning systems, the electric compressor plays an irreplaceable role, and the performance, vibration noise, reliability, sealing and the like of the electric compressor are important factors affecting its work, in the prior art, the compressor generally adopts a pressure relief mode of installing a pressure relief valve on the high-pressure outer side of the compressor, and oil and refrigerant are sprayed out during the pressure relief process, which has a risk of flammability. INVENTION CONTENTS
[0003] The utility model solves the technical problem to provide a compressor of internal pressure relief, which can realize internal pressure relief of the compressor, eliminate the possibility of flammable oil and refrigerant leaking out, and reduce the risk.
[0004] The compressor of internal pressure relief of the utility model, including compressor body and pressure relief structure, pressure relief structure installs setting in the side wall of static scroll disc that sets up inside compressor body, including check valve assembly, static scroll disc inside fixed setting has static scroll vane, the end part of the end of static scroll vane away from static scroll disc center is opened from top to bottom and is penetrated and has chamber, chamber is penetrated and is set up in static scroll disc, and chamber penetrates and communicates the upper and lower sides of static scroll disc;Check valve assembly is installed and is set up in the chamber to control the opening and closing of the chamber.
[0005] The check valve assembly includes a steel ball, a spring, and a plug.
[0006] As a further improvement of the utility model, the chamber includes a first chamber and a second chamber, a connecting channel is provided between the first chamber and the second chamber, and the first chamber and the second chamber are connected through the connecting channel.
[0007] As a further improvement of the utility model, the upper and lower sides of the static scroll disc are provided with cavities, the high-pressure cavity is in communication with the first chamber of the static scroll disc, and the low-pressure cavity is in communication with the second chamber of the static scroll disc.
[0008] The end of the first chamber away from the second chamber is in communication with the high-pressure cavity, and the end of the second chamber away from the first chamber is in communication with the low-pressure cavity.
[0009] As a further improvement of the utility model, the one-way valve assembly is installed in the second chamber; the steel ball is slidably embedded in one end of the second chamber and the connecting channel, so as to control the communication and closing of the connecting channel and the second chamber; the spring is abutted with one end of the steel ball away from the connecting channel, and the other end of the spring away from the steel ball is abutted with the plug, which is embedded in one end of the second chamber away from the connecting channel.
[0010] As a further improvement of the utility model, the plug comprises an upper column, a main body and a lower column; the upper column is fixedly arranged at one end of the main body, and the lower column is fixedly arranged at one end of the main body away from the upper column; the outer periphery of the main body is abutted with the inner wall of the second chamber; and the other end of the spring away from the steel ball is sleeved on the outer periphery of the upper column.
[0011] As a further improvement of the utility model, the second chamber is provided with a connecting chamber, the connecting chamber is in through communication with the second chamber, and the connecting chamber is in communication with the connecting channel through the second chamber; and the second chamber is in through communication with the low-pressure chamber through the connecting chamber.
[0012] As a further improvement of the utility model, the first chamber is embedded with a filter screen at one end away from the second chamber.
[0013] As a further improvement of the utility model, the two ends of the spring are fixedly connected with the steel ball and the plug respectively.
[0014] As a further improvement of the utility model, the maximum inner diameter of the connecting channel is smaller than the maximum inner diameters of the first chamber and the second chamber.
[0015] As a further improvement of the utility model, the filter screen is a conical filter screen.
[0016] Compared with the prior art, the utility model has the beneficial effects that:
[0017] By integrating the pressure relief structure on the static scroll disc inside the compressor, the high-pressure chamber and the low-pressure chamber are communicated by the one-way valve assembly, the pressure relief inside the compressor system is realized, when the pressure of the high-pressure chamber exceeds the preset value of the spring, the steel ball is opened and relieved to the low-pressure chamber, the whole process is carried out inside the compressor, the safety hazard of the traditional external pressure relief valve spouting the flammable medium is avoided, and the fire risk is significantly reduced.
[0018] The chamber penetrates the static scroll disc, so that the high-pressure chamber and the low-pressure chamber are communicated, and the pressure relief process is controlled by the one-way valve assembly, the elastic cooperation of the spring and the steel ball of the one-way valve assembly can realize the high-pressure transient response and the automatic reset sealing in the low-pressure state, and the opening and closing of the pressure relief channel are ensured.
[0019] The pressure relief channel is directly integrated in the static scroll disc body, without the need of additionally installing the external pressure relief valve and the connecting pipeline, so that the overall structure layout of the compressor is simplified, and the part cost and the assembly complexity are reduced.
[0020] A filter screen is installed at the inlet of the first chamber to effectively intercept impurity particles in the gas or substances entering the first chamber, avoiding sealing failure caused by foreign objects stuck between the steel ball and the valve seat. It also prevents impurities from entering the low-pressure chamber, significantly improving the long-term working stability of the pressure relief structure and extending the compressor maintenance cycle. Attached Figure Description
[0021] Figure 1 This is a top view schematic diagram of the static vortex disk structure of this utility model;
[0022] Figure 2 This is a bottom view schematic diagram of the static vortex disk structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the installation structure of the one-way valve assembly and filter screen of this utility model;
[0024] Figure 4 This is a schematic diagram of the plug structure of this utility model;
[0025] Figure 5 This is a schematic diagram of the filter structure of this utility model.
[0026] Explanation of the labels in the diagram:
[0027] 1. Static vortex disk; 11. Chamber; 111. First chamber; 112. Second chamber; 21. Steel ball; 22. Spring; 23. Plug; 231. Upper column; 232. Main body; 233. Lower column; 3. Filter screen. Detailed Implementation
[0028] The present invention will be further described in detail below with reference to the embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.
[0029] Specific Implementation Example 1: Please refer to... Figures 1-5 An internally depressurized compressor includes a compressor body and a depressurization structure. The depressurization structure is installed on the side wall of a stationary scroll plate 1 inside the compressor body and includes a one-way valve assembly. A stationary scroll blade is fixedly installed inside the stationary scroll plate 1. A chamber 11 is formed from top to bottom at the end of the stationary scroll blade away from the center of the stationary scroll plate 1. The chamber 11 penetrates the stationary scroll plate 1 and connects the upper and lower sides of the stationary scroll plate 1. The one-way valve assembly is installed in the chamber 11 to control the opening and closing of the chamber 11.
[0030] The one-way valve assembly includes a steel ball 21, a spring 22, and a plug 23; the steel ball 21, spring 22, and plug 23 are sequentially installed in the chamber 11.
[0031] Preferably, the stationary vortex blades are arranged in a spiral.
[0032] Preferably, spring 22 is a compression spring.
[0033] The chamber 11 includes a first chamber 111 and a second chamber 112. A connecting channel is provided between the first chamber 111 and the second chamber 112, and the first chamber 111 and the second chamber 112 are connected through the connecting channel.
[0034] like Figure 3 As shown, cavities are provided on both the upper and lower sides of the stationary vortex disk 1. The high-pressure cavity is connected to the first chamber 111 of the stationary vortex disk 1, and the low-pressure cavity is connected to the second chamber 112 of the stationary vortex disk 1.
[0035] The end of the first chamber 111 away from the second chamber 112 is connected to the high-pressure chamber, and the end of the second chamber 112 away from the first chamber 111 is connected to the low-pressure chamber.
[0036] A one-way valve assembly is installed in the second chamber 112; a steel ball 21 is slidably embedded in the end of the second chamber 112 that communicates with the connecting channel to control the connection and closure of the connecting channel and the second chamber 112; a spring 22 is abutted against the end of the steel ball 21 away from the connecting channel, and the end of the spring 22 away from the steel ball 21 is abutted against the plug 23, which is embedded in the end of the second chamber 112 away from the connecting channel.
[0037] Optionally, the plug 23 includes an upper column 231, a main body 232, and a lower column 233; the upper column 231 is fixedly disposed at one end of the main body 232, and the lower column 233 is fixedly disposed at the end of the main body 232 away from the upper column 231; the outer periphery of the main body 232 is abutted against the inner wall of the second chamber 112; the end of the spring 22 away from the steel ball 21 is sleeved on the outer periphery of the upper column 231.
[0038] Optionally, the two ends of the spring 22 are fixedly connected to the steel ball 21 and the plug 23, respectively.
[0039] Preferably, the maximum inner diameter of the connecting channel is smaller than the maximum inner diameter of the first chamber 111 and the second chamber 112, respectively.
[0040] Optionally, a connecting cavity is provided in the second chamber 112, which is in through communication with the second chamber 112 and is connected to the connecting channel through the second chamber 112; the second chamber 112 is in through communication with the low-pressure chamber through the connecting cavity; the connecting cavity is not directly connected to the connecting channel.
[0041] A filter screen 3 is embedded at the end of the first chamber 111 away from the second chamber 112; the filter screen 3 filters the substances entering the chamber 11 from the high-pressure chamber.
[0042] Preferably, the filter screen 3 is a conical filter screen; the opening of the filter screen 3 is oriented towards the high-pressure chamber, and the cone tip of the filter screen 3 is oriented towards the connecting channel.
[0043] Working principle:
[0044] Oil and refrigerant in the high-pressure chamber enter the first chamber 111. When the pressure in the high-pressure chamber exceeds the limit pressure of the one-way valve assembly, the steel ball of the one-way valve assembly is pushed away from the connection port of the connecting channel and the second chamber 112. The first chamber 111 and the second chamber 112 are connected through the connecting channel, thereby connecting the high-pressure chamber and the low-pressure chamber and forming a pressure relief area inside the compressor. During the pressure relief process, no substances are released outside the compressor.
[0045] The above description is merely a preferred embodiment of this application; however, the scope of protection of this application is not limited thereto; any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and its improved concept, should be covered within the scope of protection of this application.
Claims
1. A compressor with internal pressure relief, comprising a compressor body and a pressure relief structure, wherein the pressure relief structure is installed on the side wall of a stationary scroll plate (1) disposed inside the compressor body, characterized in that: The system includes a one-way valve assembly. A static vortex blade is fixedly installed inside the static vortex disk (1). A chamber (11) is opened from top to bottom at the end of the static vortex blade away from the center of the static vortex disk (1). The chamber (11) is installed through the static vortex disk (1) and connects the upper and lower sides of the static vortex disk (1). The one-way valve assembly is installed in the chamber (11) to control the opening and closing of the chamber (11). The one-way valve assembly includes a steel ball (21), a spring (22), and a plug (23); the steel ball (21), spring (22), and plug (23) are installed in the chamber (11) in sequence.
2. The compressor with internal pressure relief according to claim 1, characterized in that: The chamber (11) includes a first chamber (111) and a second chamber (112), and a connecting channel is provided between the first chamber (111) and the second chamber (112), and the first chamber (111) and the second chamber (112) are connected through the connecting channel.
3. A compressor with internal pressure relief according to claim 2, characterized in that: The upper and lower sides of the stationary vortex disk (1) are provided with cavities. The high-pressure cavity is connected to the first chamber (111) of the stationary vortex disk (1), and the low-pressure cavity is connected to the second chamber (112) of the stationary vortex disk (1). The end of the first chamber (111) away from the second chamber (112) is connected to the high-pressure chamber, and the end of the second chamber (112) away from the first chamber (111) is connected to the low-pressure chamber.
4. A compressor with internal pressure relief according to claim 2, characterized in that: A one-way valve assembly is installed in the second chamber (112); a steel ball (21) is slidably embedded in the end of the second chamber (112) that is connected to the connecting channel, so as to control the connection and closure of the connecting channel and the second chamber (112); a spring (22) is abutted against the end of the steel ball (21) away from the connecting channel, and the end of the spring (22) away from the steel ball (21) is abutted against the plug (23), and the plug (23) is embedded in the end of the second chamber (112) away from the connecting channel.
5. A compressor with internal pressure relief according to claim 2, characterized in that: The plug (23) includes an upper column (231), a main body (232) and a lower column (233); the upper column (231) is fixedly disposed at one end of the main body (232), and the lower column (233) is fixedly disposed at the end of the main body (232) away from the upper column (231); the outer periphery of the main body (232) is abutted against the inner wall of the second chamber (112); the end of the spring (22) away from the steel ball (21) is sleeved on the outer periphery of the upper column (231).
6. A compressor with internal pressure relief according to claim 3, characterized in that: The second chamber (112) is provided with a connecting cavity, which is in through communication with the second chamber (112). The connecting cavity is connected to the connecting channel through the second chamber (112). The second chamber (112) is in through communication with the low-pressure chamber through the connecting cavity.
7. A compressor with internal pressure relief according to claim 2, characterized in that: A filter screen (3) is embedded at the end of the first chamber (111) away from the second chamber (112).
8. A compressor with internal pressure relief according to claim 1, characterized in that: The two ends of the spring (22) are fixedly connected to the steel ball (21) and the plug (23) respectively.
9. A compressor with internal pressure relief according to claim 2, characterized in that: The maximum inner diameter of the connecting channel is smaller than the maximum inner diameter of the first chamber (111) and the second chamber (112), respectively.
10. A compressor with internal pressure relief according to claim 7, characterized in that: The filter screen (3) is a cone-shaped filter screen.