A scroll compressor with a pressure regulating device and an assembly method thereof

Abstract

The present invention discloses a scroll compressor with a pressure regulating device and an assembly method thereof, the device comprises a compressor body, the compressor body is provided with an air inlet and an air outlet, the air inlet is provided with a pressure regulating mechanism, the pressure regulating mechanism comprises a support frame, a pressure reducing cylinder and a pressure limiting assembly, the pressure reducing cylinder and the pressure limiting assembly are both provided on the support frame, the support frame is provided on the compressor body, the pressure reducing cylinder is provided with an air inlet pipe and an air outlet pipe, the air outlet pipe is connected to the air inlet, the pressure reducing cylinder is provided with a pressure reducing pipe, the pressure reducing pipe is connected to the pressure reducing cylinder, and the pressure limiting assembly is connected to the pressure reducing pipe; the method comprises a, preparation and inspection of each component; b, assembly of the pressure limiting assembly; c, installation of the connecting pipe; d, connection of the air storage tank; e, fixing of the support frame, a total of five steps. The present invention can stably control the inlet pressure of the scroll compressor, reduce the amplitude of air pressure fluctuation, stabilize the pressure, and ensure the smooth operation of the compressor; the method has simple steps, is easy to implement, and is convenient for connection and assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigeration equipment, and in particular relates to a scroll compressor with a pressure regulating device and an assembling method thereof. Background Art

[0002] A scroll compressor is a type of positive displacement compressor, and the compression component consists of a moving scroll and a stationary scroll. It includes many structural features that allow the gas passing through the compressor housing to flow in a bypass manner to reduce entrained oil. Scroll compressors are widely used in ordinary refrigeration and air-conditioning systems due to their simple structure, small size, light weight, and high efficiency. Among them, the sealing between the moving and stationary scrolls plays a vital role in the performance of the compressor. Existing scroll compressors cannot control the gas pressure at the compressor inlet, the air pressure fluctuation amplitude is large, the pressure is unstable, resulting in unstable compressor operating conditions and high power consumption. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art, and to provide a scroll compressor with a pressure regulating device and an assembly method thereof, wherein the device can stably control the inlet pressure of the scroll compressor, reduce the amplitude of air pressure fluctuation, stabilize the pressure, ensure the smooth operation of the compressor, and avoid large consumption of electric energy due to unstable operating conditions of the compressor; the method has simple steps, is easy to implement, and is convenient to connect and assemble. By gradually assembling the pressure regulating mechanism, the installation accuracy of the pressure regulating mechanism is improved, the high-precision operation of the valve stem and the connecting pipe is guaranteed, and the failure rate is reduced.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A scroll compressor with a pressure regulating device comprises a compressor body, the compressor body is provided with an air inlet and an air outlet, and is characterized in that: the air inlet is provided with a pressure regulating mechanism, the pressure regulating mechanism comprises a support frame, a pressure reducing cylinder and a pressure limiting component, the pressure reducing cylinder and the pressure limiting component are both arranged on the support frame, the support frame is arranged on the compressor body, the pressure reducing cylinder is provided with an air inlet pipe and an air outlet pipe, the air outlet pipe is connected to the air inlet, the pressure reducing cylinder is provided with a pressure reducing pipe, the pressure reducing pipe is connected to the pressure reducing cylinder, and the pressure limiting component is connected to the pressure reducing pipe. The air pressure entering the scroll compressor is regulated by the pressure regulating device, so that the pressure regulating opening and closing difference of the air compressor can be reduced, the inlet pressure of the scroll compressor can be stably controlled, the air pressure fluctuation amplitude can be reduced, the pressure is stable, the smooth operation of the compressor is ensured, and the large consumption of electric energy caused by the unstable working condition of the compressor is avoided. The gas entering the compressor body needs to pass through the pressure reducing pipe first, and the pressure reducing pipe releases the gas with a pressure higher than the set value through the pressure limiting component, thereby ensuring the gas pressure entering the compressor body.

[0006] Furthermore, the pressure limiting assembly includes a fixed frame, a turntable and a rotating motor. The turntable is arranged on the fixed frame, and the turntable is rotatably connected with the fixed frame. The turntable is provided with a first gear, and the rotating motor is provided with a second gear. The first gear is meshed with the second gear. The rotating motor drives the turntable to rotate. The turntable is provided with at least two valve bodies, and the air inlet of one valve body is connected with the pressure reducing pipe. The valve body adopts a spring-type one-way valve. When the gas pressure is too high and can push the spring in the valve body to compress, a part of the high-pressure gas flows out from the valve body, thereby reducing the gas pressure in the pressure reducing cylinder and ensuring the fluctuation amplitude of the air pressure entering the compressor body. At least two valve bodies are adopted, and the elastic coefficients of the valve body springs are different, which can correspond to different gas pressure adjustments. If the maximum pressure entering the compressor body needs to be reduced, a valve body with a small elastic coefficient is used for pressure relief. If the maximum pressure entering the compressor body needs to be increased, a valve body with a large elastic coefficient can be used for pressure relief. It is more flexible and convenient to use. The rotating motor is used to drive the turntable to rotate, thereby realizing the switching between valve bodies. The switching is convenient and the use effect is good.

[0007] Furthermore, the support frame is provided with a gas storage tank and a connecting pipe, the connecting pipe is connected to the gas outlet pipe, the connecting pipe is provided with a connecting frame, the connecting frame is provided with a first slider, the support frame is provided with a slide rail, the first slider is arranged in the slide rail, the first slider is slidably connected to the slide rail, the connecting pipe is clamped on the valve body connected to the pressure reducing pipe, the fixed frame is provided with a second slider, the second slider is arranged in the slide rail, and the second slider is slidably connected to the slide rail. The depressurized gas is collected through the gas outlet pipe to avoid gas leakage, the connecting pipe realizes the connection between the gas storage tank and the valve body, the valve body and the connecting pipe are in the form of sliding connection, which facilitates the switching between the valve bodies, when the valve body needs to be replaced, first slide the connecting pipe to disconnect the connecting pipe and the valve body, then slide the valve body to disconnect the valve body and the pressure reducing pipe, and then replace the valve body by rotating the turntable, after the replacement is completed, first move the valve body to make the replaced valve body clamped on the pressure reducing pipe, and then move the connecting pipe to clamp the connecting pipe on the valve body. The connection pipe and the valve body move using the same slide rail, which can ensure the alignment effect between the connection pipe and the valve body and ensure the sliding accuracy of the connection pipe and the valve body. The second slider is connected to the slide rail, which slightly enlarges the volume of the second slider and increases the friction between the second slide rail and the slide rail, so that the fixed frame is set in the vertical slide rail and will not slide down. Only by applying a pulling force can the fixed frame slide down.

[0008] Furthermore, the support frame is provided with an electric push rod, which is connected to the connecting frame, and the electric push rod drives the connecting frame to slide on the slide rail. A connecting assembly is provided between the connecting frame and the fixed frame, and the connecting assembly includes a connecting strip and a protrusion. The connecting strip is provided with a connecting groove, and the protrusion is provided on the fixed frame, and the protrusion is provided in the connecting groove, and the protrusion is slidably connected with the connecting groove. The electric push rod and the connecting assembly are used to realize that one driving structure drives the movement of two moving parts, and the movement of the two parts has a sequence, so as to realize the docking installation of the connecting pipe, the valve body and the pressure reducing pipe, so that the replacement of the valve body is more convenient, the replacement effect is better, and the replacement time is saved.

[0009] Furthermore, the gas storage tank is provided with a reflux pipe, and the reflux pipe is provided with a reflux pump. The gas storage tank refluxes the depressurized gas back to the refrigeration system through the reflux pipe and the reflux pump, thereby avoiding waste.

[0010] Furthermore, the compressor body is provided with a connecting plate, the pressure reducing cylinder is provided with a fixing rod, the fixing rod is arranged on the connecting plate, the fixing rod is provided with a sliding rod, the support frame is provided with a sliding groove, the sliding rod is arranged in the sliding groove, the sliding rod is slidably connected with the sliding groove, the connecting plate is provided with a fixing bolt, the support frame is provided with a connecting rod, the connecting rod is provided with a fixing hole, the fixing bolt is arranged in the fixing hole, the fixing bolt is provided with a fixing nut, and the fixing nut clamps the connecting rod. The pressure regulating mechanism is fixed on the compressor body by using the connecting plate. The setting of the sliding rod and the sliding groove facilitates the alignment of the valve body and the pressure reducing tube after fixing the external pressure reducing cylinder, and improves the installation accuracy of the valve body and the pressure reducing tube. At the same time, the sliding connection method facilitates installation. The form of the fixing bolt and the fixing hole can facilitate both alignment and fixation, and is easy to install and easy to disassemble and replace.

[0011] Furthermore, the gas storage tank is provided with a base, the base is fixedly connected to the connecting plate, the base is provided with a slot, the gas storage tank is arranged in the slot, and the gas storage tank is threadedly connected to the slot, so that the gas storage tank can be fixed and the connection of the gas storage tank is convenient.

[0012] A method for assembling a scroll compressor with a pressure regulating device, characterized by comprising the following steps:.

[0013] a. Preparation and inspection of each component:

[0014] Inspect each component that needs to be assembled, screen out deformed and damaged components and replace them in time to avoid affecting subsequent assembly.

[0015] b. Assembly of pressure limiting components:

[0016] First, insert the valve body into the turntable, then weld and fix it, then insert the first gear into the turntable, then insert the turntable into the fixed frame, and fix the rotating motor on the fixed frame, mesh the second gear on the motor output shaft with the first gear, then start the motor, check the rotation of the turntable, and then insert the second slider on both sides of the fixed frame and fix it with screws. Install the pressure limiting component first to facilitate the subsequent installation of the whole on the support frame. Compared with direct installation on the support frame, it can ensure the installation accuracy of the pressure limiting component, ensure the normal operation of the pressure limiting component, and improve the operation accuracy.

[0017] c. Installation of connecting pipe:

[0018] First, fix the connecting pipe to the connecting frame, then connect the first slider on both sides of the connecting frame, then slide the fixing frame into the slide rail, then slide the connecting frame into the slide rail, then connect the electric push rod to the support frame and the connecting frame, and then connect the connecting assembly between the fixing frame and the connecting frame. Assembling the components of the connecting pipe first can improve the installation accuracy of the connecting pipe, ensure the running accuracy of the connecting pipe, and ensure the connection effect of the connecting pipe and the valve body.

[0019] d. Gas tank connection:

[0020] Screw the gas tank into the slot, then connect the gas outlet of the gas tank to the reflux pump and reflux pipe, and then connect the inlet of the gas tank to the connecting pipe with a hose. The connection and fixation of the gas tank, using a hose can ensure that the connecting pipe will not be disconnected from the gas tank during the sliding process, making the connection more convenient.

[0021] e. Fixing of support frame:

[0022] Fix the decompression cylinder on the connecting plate, and then fix the support frame on the connecting plate to complete the assembly.

[0023] Further, the detailed steps of fixing the support frame in step e are as follows: first connect the outlet pipe of the pressure reducing cylinder to the air inlet of the compressor body, insert the fixing rod into the air inlet, clamp the outlet pipe into the air inlet pipe, then tighten the bolts to fix the fixing rod on the connecting plate, then slide the slide into the slide rod, and clamp the fixing hole into the fixing bolt, and then tighten the bolts to fix. When the valve body and the pressure reducing pipe are misaligned, a gasket can be inserted into the fixing bolt to adjust the angle so that the pressure reducing pipe and the valve body are aligned and connected. When fixing the support frame, the pressure reducing cylinder is first installed and fixed to ensure the connection effect between the pressure reducing cylinder and the compressor body and avoid leakage. When adjusting the valve body and the pressure reducing pipe, even if there is a deviation between the pressure reducing pipe and the valve body, the angle of the support frame can be fine-tuned by arranging a gasket on the fixing bolt to absorb the docking between the valve body and the pressure reducing pipe. It can ensure the installation accuracy and improve the assembly effect.

[0024] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0025] When the vent valve is in use, the gas first enters the pressure reducing cylinder and then enters the compressor body for compression. When the gas pressure is relatively high, the valve body of the pressure limiting assembly is triggered, the valve body is opened, the pressure is released, part of the gas flows into the connecting pipe and then enters the gas storage tank, and the gas pressure in the pressure reducing cylinder is reduced; and when the valve body needs to be replaced, the air intake of the pressure reducing cylinder is closed first, and then the push rod motor is started, the connecting pipe is downwardly withdrawn from the valve body, and the valve body and the connecting pipe are separated. At this time, the protrusion slides in the connecting groove, and when the connecting pipe is completely withdrawn, the protrusion abuts against the end of the connecting groove, and the connecting pipe continues to move downward, and the connecting strip drives the protrusion to move downward, that is, drives the fixed bracket to move downward, so that the valve body withdraws from the pressure reducing pipe, and then the rotating motor is started to change the position of the valve body, so that the valve body to be used corresponds to the position of the pressure reducing pipe up and down, and then the push rod motor is started to connect the connecting pipe and the valve body, and the push rod motor is started again to fix the valve body on the pressure reducing pipe to realize the connection between the pressure reducing pipe and the valve body. The present invention adjusts the air pressure entering the scroll compressor through a pressure regulating device, thereby reducing the pressure regulation opening and closing difference of the air compressor, stably controlling the inlet pressure of the scroll compressor, reducing the air pressure fluctuation amplitude, stabilizing the pressure, ensuring the smooth operation of the compressor, and avoiding large consumption of electric energy due to unstable compressor operating conditions.

[0026] The present invention has five steps in total, including a. preparation and inspection of various components; b. assembly of the pressure limiting component; c. installation of the connecting pipe; d. connection of the gas storage tank; and e. fixation of the supporting frame. The steps are simple, easy to implement, convenient for connection and assembly, and the installation accuracy of the pressure regulating mechanism is improved by gradually assembling the pressure regulating mechanism, ensuring the high-precision operation of the valve stem and the connecting pipe and reducing the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of a scroll compressor with a pressure regulating device according to the present invention;

[0029] Figure 2 This is a schematic diagram of the structure in which the valve body, the pressure reducing cylinder and the connecting pipe are all disconnected in the present invention;

[0030] Figure 3 It is a structural schematic diagram of the valve body, the pressure reducing cylinder and the connecting pipe in the present invention being connected;

[0031] Figure 4 It is a structural schematic diagram of the compressor body in the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the pressure reducing cylinder in the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the proppant in the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the gas storage tank in the present invention;

[0035] Figure 8 It is a structural schematic diagram of the connecting frame in the present invention;

[0036] Fig. 9 It is a structural schematic diagram of the pressure limiting component in the present invention;

[0037] Fig.10 It is a structural schematic diagram of the valve body in the present invention.

[0038] In the figure, 1-compressor body; 2-air inlet; 3-air outlet; 4-pressure regulating mechanism; 5-support frame; 6-pressure reducing cylinder; 7-pressure limiting assembly; 8-air inlet pipe; 9-air outlet pipe; 10-fixed frame; 11-turntable; 12-rotating motor; 13-first gear; 14-second gear; 15-valve body; 16-gas storage tank; 17-connecting pipe; 18-connecting frame; 19-first slider; 20-slide rail; 21-second slider; 22-electric push rod; 24-connecting strip; 25-protrusion; 26-connecting groove; 27-reflux pipe; 28-reflux pump; 29-connecting plate; 30-fixing rod; 31-slide rod; 32-slide groove; 33-fixing bolt; 34-connecting rod; 35-fixing hole; 36-fixing nut; 37-base; 38-card slot; 39-pressure reducing pipe. DETAILED DESCRIPTION

[0039] like Figures 1 to 10 As shown, a scroll compressor with a pressure regulating device of the present invention comprises a compressor body 1, the compressor body 1 is provided with an air inlet 2 and an air outlet 3, the air inlet 2 is provided with a pressure regulating mechanism 4, the pressure regulating mechanism 4 comprises a support frame 5, a pressure reducing cylinder 6 and a pressure limiting assembly 7, the pressure reducing cylinder 6 and the pressure limiting assembly 7 are both arranged on the support frame 5, the support frame 5 is arranged on the compressor body 1, the pressure reducing cylinder 6 is provided with an air inlet pipe 8 and an air outlet pipe 9, the air outlet pipe 9 is connected to the air inlet 2, the pressure reducing cylinder 6 is provided with a pressure reducing pipe 39, the pressure reducing pipe 39 is connected to the pressure reducing cylinder 6, and the pressure limiting assembly 7 is connected to the pressure reducing pipe 39. The pressure regulating device is used to adjust the air pressure entering the scroll compressor, so that the pressure regulating opening and closing difference of the air compressor can be reduced, the inlet pressure of the scroll compressor can be stably controlled, the air pressure fluctuation amplitude is reduced, the pressure is stable, the smooth operation of the compressor is ensured, and the large consumption of electric energy due to the unstable working condition of the compressor is avoided. The gas entering the compressor body 1 needs to first pass through the pressure reducing pipe 39 . The pressure reducing pipe 39 releases the pressure of the gas whose pressure is higher than the set value through the pressure limiting component 7 , thereby ensuring the pressure of the gas entering the compressor body 1 .

[0040] The pressure limiting assembly 7 includes a fixed frame 10, a rotating disk 11 and a rotating motor 12. The rotating disk 11 is arranged on the fixed frame 10, and the rotating disk 11 is rotatably connected to the fixed frame 10. The rotating disk 11 is provided with a first gear 13, and the rotating motor 12 is provided with a second gear 14. The first gear 13 is meshed with the second gear 14. The rotating motor 12 drives the rotating disk 11 to rotate. The rotating disk 11 is provided with at least two valve bodies 15, and the air inlet of one of the valve bodies 15 is connected to the pressure reducing pipe 39. The valve body 15 adopts a spring-type one-way valve. When the gas pressure is too high to push the spring in the valve body 15 to compress, a part of the high-pressure gas flows out of the valve body 15, thereby reducing the gas pressure in the pressure reducing cylinder 6 and ensuring the pressure fluctuation amplitude entering the compressor body 1. At least two valve bodies 15 are used, and the elastic coefficients of the springs of the valve bodies 15 are different, so that they can be adjusted to correspond to different gas pressures. If the maximum pressure entering the compressor body 1 needs to be reduced, the valve body 15 with a small elastic coefficient can be used to release the pressure. If the maximum pressure entering the compressor body 1 needs to be increased, the valve body 15 with a large elastic coefficient can be used to release the pressure. It is more flexible and convenient to use. The rotary motor 12 is used to drive the turntable 11 to rotate, thereby realizing the switching between the valve bodies 15, which is convenient to switch and has a good use effect.

[0041] The support frame 5 is provided with a gas storage tank 16 and a connecting pipe 17, the connecting pipe 17 is connected to the air outlet pipe 9, the connecting pipe 17 is provided with a connecting frame 18, the connecting frame 18 is provided with a first slider 19, the support frame 5 is provided with a slide rail 20, the first slider 19 is arranged in the slide rail 20, the first slider 19 is slidably connected to the slide rail 20, the connecting pipe 17 is clamped on the valve body 15 connected to the pressure reducing pipe 39, and the fixed frame 10 is provided with a second slider 21, the second slider 21 is arranged in the slide rail 20, and the second slider 21 is slidably connected to the slide rail 20. The depressurized gas is collected through the gas outlet pipe 9 to avoid gas leakage. The connecting pipe 17 realizes the connection between the gas storage tank 16 and the valve body 15. The valve body 15 and the connecting pipe 17 are connected in a sliding manner, which facilitates the switching between the valve bodies 15. When the valve body 15 needs to be replaced, the connecting pipe 17 is first slid to disconnect the connecting pipe 17 and the valve body 15, and then the valve body 15 is slid to disconnect the valve body 15 and the pressure reducing pipe 39, and then the valve body 15 is replaced by rotating the turntable 11. After the replacement is completed, the valve body 15 is first moved to make the replaced valve body 15 stuck on the pressure reducing pipe 39, and then the connecting pipe 17 is moved to make the connecting pipe 17 stuck on the valve body 15. The movement of the connecting pipe 17 and the valve body 15 adopts the same slide rail 20, which can ensure the alignment effect between the connecting pipe 17 and the valve body 15 and ensure the sliding accuracy of the connecting pipe 17 and the valve body 15. The second slider 21 is connected to the slide rail 20, slightly enlarging the volume of the second slider 21 and increasing the friction between the second slide rail 20 and the slide rail 20, so that the fixing frame 10 set in the vertical slide rail 20 will not slide down, and the fixing frame 10 can only slide down by applying a pulling force.

[0042] The support frame 5 is provided with an electric push rod 22, which is connected to the connecting frame 18. The electric push rod 22 drives the connecting frame 18 to slide on the slide rail 20. A connecting assembly is provided between the connecting frame 18 and the fixed frame 10. The connecting assembly includes a connecting strip 24 and a protrusion 25. The connecting strip 24 is provided with a connecting groove 26. The protrusion 25 is arranged on the fixed frame 10, and the protrusion 25 is arranged in the connecting groove 26. The protrusion 25 is slidably connected with the connecting groove 26. The electric push rod 22 and the connecting assembly are used to realize that one driving structure drives the movement of two moving parts, and the movement of the two parts has a sequence, so as to realize the docking installation of the connecting pipe 17, the valve body 15 and the pressure reducing pipe 39, so that the replacement of the valve body 15 is more convenient, the replacement effect is better, and the replacement time is saved.

[0043] The gas storage tank 16 is provided with a reflux pipe 27, and the reflux pipe 27 is provided with a reflux pump 28. The gas storage tank 16 refluxes the depressurized gas back to the refrigeration system through the reflux pipe 27 and the reflux pump 28, thereby avoiding waste.

[0044] The compressor body 1 is provided with a connecting plate 29, the pressure reducing cylinder 6 is provided with a fixing rod 30, the fixing rod 30 is arranged on the connecting plate 29, the fixing rod 30 is provided with a sliding rod 31, the support frame 5 is provided with a sliding groove 32, the sliding rod 31 is arranged in the sliding groove 32, the sliding rod 31 is slidably connected with the sliding groove 32, the connecting plate 29 is provided with a fixing bolt 33, the support frame 5 is provided with a connecting rod 34, the connecting rod 34 is provided with a fixing hole 35, the fixing bolt 33 is arranged in the fixing hole 35, the fixing bolt 33 is provided with a fixing nut 36, and the fixing nut 36 clamps the connecting rod 34. The pressure regulating mechanism 4 is fixed on the compressor body 1 by using the connecting plate 29. The setting of the sliding rod 31 and the sliding groove 32 facilitates the alignment of the valve body 15 and the pressure reducing pipe 39 after the outer pressure reducing cylinder 6 is fixed, and improves the installation accuracy of the valve body 15 and the pressure reducing pipe 39. At the same time, the sliding connection mode facilitates installation. The form of the fixing bolt 33 and the fixing hole 35 can facilitate alignment and fixation, and is easy to install and disassemble and replace.

[0045] Further, the gas storage tank 16 is provided with a base 37, the base 37 is fixedly connected to the connecting plate 29, the base 37 is provided with a slot 38, the gas storage tank 16 is arranged in the slot 38, and the gas storage tank 16 is threadedly connected to the slot 38. The gas storage tank 16 can be fixed, and the connection of the gas storage tank 16 is convenient.

[0046] A method for assembling a scroll compressor with a pressure regulating device comprises the following steps:.

[0047] a. Preparation and inspection of each component:

[0048] Inspect each component that needs to be assembled, screen out deformed and damaged components and replace them in time to avoid affecting subsequent assembly.

[0049] b. Assembly of the pressure limiting component 7:

[0050] First, insert the valve body 15 into the turntable 11, then weld and fix it, then insert the first gear 13 into the turntable 11, then insert the turntable 11 into the fixed frame 10, and fix the rotating motor 12 on the fixed frame 10, mesh the second gear 14 on the motor output shaft with the first gear 13, then start the motor, check the rotation of the turntable 11, and then insert the second slider 21 on both sides of the fixed frame 10 and fix it with screws. First, install the pressure limiting component 7 to facilitate the subsequent installation of the whole on the support frame 5. Compared with installing it directly on the support frame 5, it can ensure the installation accuracy of the pressure limiting component 7, ensure the normal operation of the pressure limiting component 7, and improve the operation accuracy.

[0051] c. Installation of connecting pipe 17:

[0052] First, the connecting pipe 17 is fixed to the connecting frame 18, and then the first sliders 19 are connected to both sides of the connecting frame 18, and then the fixing frame 10 is slid into the slide rail 20, and then the connecting frame 18 is slid into the slide rail 20, and then the electric push rod 22 is connected to the support frame 5 and the connecting frame 18, and then the connecting assembly is connected between the fixing frame 10 and the connecting frame 18. Assembling the components of the connecting pipe 17 first can improve the installation accuracy of the connecting pipe 17, ensure the running accuracy of the connecting pipe 17, and ensure the connection effect of the connecting pipe 17 and the valve body 15.

[0053] d. Gas tank 16 connection:

[0054] The gas tank 16 is screwed into the slot 38, and then the gas outlet of the gas tank 16 is connected to the reflux pump 28 and the reflux pipe 27, and then the inlet of the gas tank 16 is connected to the connecting pipe 17 with a hose. The connection and fixation of the gas tank 16 using a hose can ensure that the connecting pipe 17 will not be disconnected from the gas tank 16 during the sliding process, and the connection is more convenient.

[0055] e. Fixing of the support frame 5:

[0056] The decompression cylinder 6 is fixed on the connecting plate 29, and then the support frame 5 is fixed on the connecting plate 29 to complete the assembly.

[0057] The detailed steps of fixing the support frame 5 in step e are as follows: firstly connect the outlet pipe 9 of the decompression cylinder 6 to the air inlet 2 of the compressor body 1, insert the fixing rod 30 into the air inlet 2, clamp the outlet pipe 9 into the air inlet pipe 8, then tighten the bolts to fix the fixing rod 30 on the connecting plate, then slide the slide groove 32 into the slide rod 31, and clamp the fixing hole 35 into the fixing bolt 33, and then tighten the bolts to fix it. When the valve body 15 and the decompression pipe 39 are not aligned, the gasket can be inserted into the fixing bolt 33 to adjust the angle so that the decompression pipe 39 and the valve body 15 are aligned and connected. When the support frame 5 is fixed, the decompression cylinder 6 is first installed and fixed, which can ensure the connection effect between the decompression cylinder 6 and the compressor body 1 and avoid leakage. When adjusting the valve body 15 and the decompression pipe 39, even if there is a deviation between the decompression pipe 39 and the valve body 15, the angle of the support frame 5 can be fine-tuned by arranging a gasket on the fixing bolt 33 so as to absorb the docking between the valve body 15 and the decompression pipe 39. It can ensure installation accuracy and improve assembly effect.

[0058] When the present invention is in use, the gas first enters the pressure reducing cylinder 6 and then enters the compressor body 1 for compression. When the gas pressure is relatively high, the valve body 15 of the pressure limiting assembly 7 is triggered, the valve body 15 opens, the pressure is released, part of the gas flows into the connecting pipe 17 and then enters the gas storage tank 16, and the gas pressure in the pressure reducing cylinder 6 is reduced; and when the valve body 15 needs to be replaced, the air intake of the pressure reducing cylinder 6 is first closed, and then the push rod motor is started, the connecting pipe 17 exits the valve body 15 downward, and the valve body 15 and the connecting pipe 17 are separated. At this time, the protrusion 25 slides in the connecting groove 26, and when the connecting pipe After 17 is completely withdrawn, the protrusion 25 abuts against the end of the connecting groove 26, the connecting pipe 17 continues to move downward, and the connecting strip 24 drives the protrusion 25 to move downward, that is, drives the fixed bracket to move downward, so that the valve body 15 withdraws from the pressure reducing pipe 39, and then the rotating motor 12 is started to change the position of the valve body 15, so that the valve body 15 to be used corresponds to the position of the pressure reducing pipe 39 up and down, and then the push rod motor is started to dock the connecting pipe 17 and the valve body 15, and the push rod motor continues to start, and the valve body 15 is fixed on the pressure reducing pipe 39 to realize the connection between the pressure reducing pipe 39 and the valve body 15. The present invention adjusts the air pressure entering the scroll compressor through the pressure regulating device, so that the pressure regulating opening and closing difference of the air compressor can be reduced, the inlet pressure of the scroll compressor can be stably controlled, the air pressure fluctuation amplitude is reduced, the pressure is stable, the smooth operation of the compressor is ensured, and the large consumption of electric energy due to the unstable working condition of the compressor is avoided.

[0059] The present invention has five steps in total, including a. preparation and inspection of various components; b. assembly of the pressure limiting component 7; c. installation of the connecting pipe 17; d. connection of the gas storage tank 16; and e. fixation of the support frame 5. The steps are simple, easy to implement, and convenient for connection and assembly. By gradually assembling the pressure regulating mechanism 4, the installation accuracy of the pressure regulating mechanism 4 is improved, the high-precision operation of the valve stem and the connecting pipe 17 is guaranteed, and the failure rate is reduced.

[0060] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A scroll compressor with a pressure regulating device, comprising a compressor body, wherein the compressor body is provided with an air inlet and an air outlet, and wherein: The air inlet is provided with a pressure regulating mechanism, and the pressure regulating mechanism comprises a support frame, a pressure reducing cylinder and a pressure limiting assembly, the pressure reducing cylinder and the pressure limiting assembly are both arranged on the support frame, the support frame is arranged on the compressor body, the pressure reducing cylinder is provided with an air inlet pipe and an air outlet pipe, the air outlet pipe is connected with the air inlet, the pressure reducing cylinder is provided with a pressure reducing pipe, the pressure reducing pipe is communicated with the pressure reducing cylinder, and the pressure limiting assembly is communicated with the pressure reducing pipe, the pressure limiting assembly comprises a fixed frame, a turntable and a rotating motor, the turntable is arranged on the fixed frame, the turntable is rotatably connected with the fixed frame, the turntable is provided with a first gear, the rotating motor is provided with a second gear, the first gear is meshed with the second gear, the rotating motor drives the turntable to rotate, the turntable is provided with at least two valve bodies, the air inlet of one of the valve bodies is connected with the pressure reducing pipe, the support frame is provided with an air storage tank and a connecting pipe, The connecting pipe is connected to the outlet pipe, the connecting pipe is provided with a connecting frame, the connecting frame is provided with a first sliding block, the supporting frame is provided with a sliding rail, the first sliding block is provided in the sliding rail, the first sliding block is slidably connected to the sliding rail, the connecting pipe is clamped on the valve body connected to the pressure reducing pipe, the fixing frame is provided with a second sliding block, the second sliding block is provided in the sliding rail, the second sliding block is slidably connected to the sliding rail, the compressor body is provided with a connecting plate, the pressure reducing cylinder is provided with a fixing rod, the fixing rod is provided on the connecting plate, the fixing rod is provided with a sliding rod, the supporting frame is provided with a sliding groove, the sliding rod is provided in the sliding groove, the sliding rod is slidably connected to the sliding groove, the connecting plate is provided with a fixing bolt, the supporting frame is provided with a connecting rod, the connecting rod is provided with a fixing hole, the fixing bolt is provided in the fixing hole, the fixing bolt is provided with a fixing nut, and the fixing nut clamps the connecting rod.

2. A scroll compressor with a pressure regulating device according to claim 1, characterized in that: The support frame is provided with an electric push rod, and the electric push rod is connected to the connecting frame. The electric push rod drives the connecting frame to slide on the slide rail. A connecting component is provided between the connecting frame and the fixed frame. The connecting component includes a connecting strip and a protrusion. The connecting strip is provided with a connecting groove. The protrusion is provided on the fixed frame, and the protrusion is provided in the connecting groove. The protrusion is slidably connected to the connecting groove.

3. The scroll compressor with a pressure regulating device according to claim 1, characterized in that: The gas storage tank is provided with a reflux pipe, and the reflux pipe is provided with a reflux pump.

4. The scroll compressor with a pressure regulating device according to claim 1, characterized in that: The gas storage tank is provided with a base, the base is fixedly connected to the connecting plate, the base is provided with a slot, the gas storage tank is arranged in the slot, and the gas storage tank is threadedly connected to the slot.

5. A method for assembling a scroll compressor with a pressure regulating device according to claim 1, characterized in that The steps include: a. Preparation and inspection of each component: Check each component that needs to be assembled, screen out deformed and damaged components and replace them in time to avoid affecting subsequent assembly; b. Assembly of pressure limiting components: First, clamp the valve body into the turntable, then weld and fix it, then clamp the first gear on the turntable, then clamp the turntable into the fixing frame, and fix the rotating motor on the fixing frame, mesh the second gear on the motor output shaft with the first gear, then start the motor, check the rotation of the turntable, and then clamp the second slider on both sides of the fixing frame and fix it with screws; c. Installation of connecting pipe: First, fix the connecting pipe to the connecting frame, then connect the first sliders on both sides of the connecting frame, then slide the fixing frame into the slide rail, then slide the connecting frame into the slide rail, then connect the electric push rod to the supporting frame and the connecting frame, and then connect the connecting assembly between the fixing frame and the connecting frame; d. Gas tank connection: Screw the gas tank into the slot, then connect the gas outlet of the gas tank to the reflux pump and reflux pipe, and then connect the inlet of the gas tank to the connecting pipe with a hose; e. Fixing of support frame: Fix the decompression cylinder on the connecting plate, and then fix the support frame on the connecting plate to complete the assembly.

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