Radial jet enthalpy-increasing one-way valve structure for scroll compressor

Abstract

The application provides a radial jet enthalpy-increasing one-way valve structure for a scroll compressor, which comprises a fixed scroll, a jet enthalpy-increasing one-way valve and a radial jet enthalpy-increasing pipe, and the fixed scroll has an end plate, an annular edge plate and scroll teeth; in particular, the top surface of the end plate is provided with an axial slot hole, the middle part of the bottom end of the axial slot hole is provided with an inner slot hole, and the edge part of the bottom end is communicated with an axial jet hole; the jet enthalpy-increasing one-way valve comprises a one-way valve flange, a one-way valve piece and a spring, the one-way valve flange has a rod part and a plate part, the rod part is inserted into the axial slot hole, the plate part blocks the axial slot hole, and an enthalpy-increasing channel is formed between the rod part and the axial slot hole; the annular edge plate is further provided with a radial enthalpy-increasing pipe counterbore communicated with the enthalpy-increasing channel and connected with the radial jet enthalpy-increasing pipe; the spring is arranged in the inner slot hole, and the one-way valve piece is movably arranged between the rod part of the one-way valve flange and the spring to block or open the bottom part of the enthalpy-increasing channel. The application can reduce the vibration of the enthalpy-increasing pipe of the radial inlet enthalpy-increasing scroll compressor and improve the service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electromechanical and refrigeration technology, and particularly relates to a radial jet augmenting unidirectional valve structure for scroll compressor. BACKGROUND

[0002] The jet augmenting compressor can effectively increase the operation range of the scroll compressor and improve the operation pressure ratio of the compressor, and the jet augmenting compressor is widely used in air conditioning systems, heat pump systems and refrigeration systems. The jet augmenting hole is usually arranged on the fixed scroll plate of the scroll compressor, but when the air conditioning unit operates to a specific working condition, the system will inject the supercooled refrigerant into the compression cavity of the scroll plate, thereby achieving two purposes. The first purpose is to directly increase the suction amount of the scroll compressor, because when the jet is opened, the suction amount of the scroll compressor will become the suction hole plus the jet amount, thereby improving the capacity of the scroll compressor. The second purpose is to cool the scroll plate, so that the scroll plate can ensure the reliability of the scroll compressor when operating in a super-high pressure ratio working condition, and indirectly improve the operation range of the scroll compressor.

[0003] For an asymmetric scroll, when the jet augmenting function is turned on, the moving scroll plate moves between the two different compression cavities, and the scroll teeth of the moving scroll plate also continuously block the injection of the refrigerant. At this time, the jet augmenting pipe will pulsate regularly with the movement of the moving scroll plate. When the jet augmenting is turned off, the gas in the scroll cavity will also impact the augmenting pipe through the augmenting hole, forming regular pressure pulsation. When the operating speed of the compressor is continuously improved, the result of the pulsation is stress fatigue of the jet augmenting pipe, and in severe cases, pipe cracking failure occurs, which seriously affects the service life of the jet augmenting compressor. In order to reduce the vibration of the augmenting pipe caused by pressure pulsation and improve the reliability of the compressor, the design of the jet unidirectional valve is essential.

[0004] At present, the compressors in the industry basically use one jet hole on the fixed scroll plate to jet augment the compressor, but with the increasing demand for compressor displacement and the demand for high compression ratio compressors, a single jet hole cannot meet the needs of the industry. SUMMARY

[0005] The purpose of the present application is to provide a radial jet augmenting unidirectional valve structure for scroll compressor, which can meet the product demand of reducing the vibration of the augmenting pipe, improving the service life of the augmenting scroll compressor, and also can achieve the effects of increasing the air intake of the augmenting scroll compressor, improving the capacity of the augmenting compressor and improving the pressure ratio of the augmenting compressor.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] A radial jet enthalpy-increasing one-way valve structure for a scroll compressor includes a fixed scroll plate, a jet enthalpy-increasing one-way valve mounted on the fixed scroll plate, and a radial jet enthalpy-increasing pipe. The fixed scroll plate has an end plate, an annular side plate on the bottom surface of the end plate, and scroll teeth on the inner side of the annular side plate. The scroll teeth are spirally coiled to form a scroll cavity. The annular side plate has a radial suction pipe countersunk hole communicating with the tail end of the scroll cavity. The middle part of the end plate has an exhaust hole communicating with the center end of the scroll cavity. The characteristic feature is that: the top surface of the end plate has an axial slot next to the exhaust hole. The bottom end of the axial slot has a narrowed inner slot. The bottom end of the inner slot is closed. The bottom edge of the axial slot communicates with an axial jet hole. The bottom end of the axial jet hole communicates with the scroll cavity.

[0008] The jet enthalpy-enhancing one-way valve includes a one-way valve flange, a one-way valve plate, and a spring. The one-way valve flange has a rod and a plate at the top of the rod. The rod is inserted into the axial slot of the fixed scroll plate, with its bottom near the top of the inner slot. The plate is placed on the top surface of the end plate to seal the axial slot. There is a gap between the outer wall of the rod and the inner wall of the axial slot to form an enthalpy-enhancing channel. The annular side plate of the fixed scroll plate also has a radial enthalpy-enhancing tube countersunk hole near the axial slot, which connects to the enthalpy-enhancing channel. The end of the radial jet enthalpy-enhancing tube is connected to the radial enthalpy-enhancing tube countersunk hole.

[0009] The spring is placed in the inner groove of the fixed vortex disk. The one-way valve plate is movably positioned between the rod of the one-way valve flange and the spring, which can block or open the bottom of the enthalpy-increasing channel. When the one-way valve plate is compressed, it can move away from the rod of the one-way valve flange and compress the spring to store force, so that the bottom of the enthalpy-increasing channel is opened, realizing the sequential connection of the vortex cavity, axial jet hole, enthalpy-increasing channel and radial jet enthalpy-increasing pipe. When the spring returns to its original position, it can return the one-way valve plate to the rod of the one-way valve flange, so that the bottom of the enthalpy-increasing channel is closed, realizing that the axial jet hole and the enthalpy-increasing channel are not connected.

[0010] In the optimized design, the lower part of the stem of the one-way valve flange also has a stop head, and the edge of the stop head has multiple evenly arranged flow holes. The one-way valve plate can be placed against the bottom surface of the stop head to seal the flow holes.

[0011] In the optimized design, the plate portion of the one-way valve flange is an elongated strip-shaped structure with end holes at both ends. The top surface of the end plate has mounting holes corresponding to the end holes of the one-way valve flange. The one-way valve flange is fastened to the end plate of the fixed scroll plate by bolts, end holes, and mounting holes.

[0012] In the optimized design, the upper part of the stem of the one-way valve flange also has a plug head, the outer wall of the plug head abuts against the inner wall of the axial slot, and the outer wall of the plug head has an annular groove and a sealing ring.

[0013] The axial jet hole comprises a plurality of holes arranged around the center of the axial slot.

[0014] The present application has the following outstanding essential features and significant progress: when the scroll compressor operates in the enthalpy-increasing condition, the gas enters the enthalpy-increasing passage through the radial jet enthalpy-increasing pipe, the pressure of the gas flow presses the one-way valve plate and compresses the spring, the bottom of the enthalpy-increasing passage is opened, the scroll cavity, the axial jet hole, the enthalpy-increasing passage and the radial jet enthalpy-increasing pipe are sequentially connected, so that the gas flow can finally enter the scroll cavity through the radial jet enthalpy-increasing pipe of the fixed scroll plate. When the scroll compressor does not operate in the enthalpy-increasing condition, the spring will lift the one-way valve plate, thereby blocking the impact of the gas in the scroll cavity on the radial jet enthalpy-increasing pipe, and the purpose of reducing pressure pulsation is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a sectional view of the fixed scroll plate in the present application.

[0016] Figure 2 FIG. 2 is a top view of the fixed scroll plate in the present application.

[0017] Figure 3 FIG. 3 is a structural schematic view of the jet enthalpy-increasing one-way valve in the present application.

[0018] Figure 4 FIG. 4 is a bottom view of the one-way valve flange in the present application.

[0019] Figure 5 FIG. 5 is a schematic view of the radial jet enthalpy-increasing one-way valve structure of the scroll compressor in the present application in the state that the axial jet hole is not connected with the enthalpy-increasing passage.

[0020] Figure 6 FIG. 6 is a schematic view of the radial jet enthalpy-increasing one-way valve structure of the scroll compressor in the present application in the state that the axial jet hole is connected with the enthalpy-increasing passage. DETAILED DESCRIPTION

[0021] The present application will be further described below in combination with the drawings.

[0022] EMBODIMENT

[0023] REFERENCE Figures 1 to 6 A radial jet enthalpy-increasing one-way valve structure for a scroll compressor comprises a fixed scroll plate 1, a jet enthalpy-increasing one-way valve mounted on the fixed scroll plate 1 and a radial jet enthalpy-increasing pipe 2.

[0024] DETAILED DESCRIPTION Figure 1 and Figure 2The fixed scroll plate 1 has an end plate 11, an annular edge plate 10 arranged on the bottom surface of the end plate 11, and scroll teeth 12 arranged on the inner side of the annular edge plate 10. The scroll teeth 12 are spirally wound to form scroll cavities 13. The annular edge plate 10 has radial suction pipe counterbores 14 communicating with the tail ends of the scroll cavities 13. The middle part of the end plate 11 has exhaust holes 15 communicating with the center ends of the scroll cavities 13.

[0025] The top surface of the end plate 11 has an axial slot hole 16 beside the exhaust hole 15. The middle part of the bottom end of the axial slot hole 16 has an inner slot hole 17 with a narrowed hole diameter. The bottom end of the inner slot hole 17 is closed. The bottom end of the axial slot hole 16 is connected with axial jet holes 18. The axial jet holes 18 include a plurality of holes arranged around the center of the axial slot hole 16. In this embodiment, there are three axial jet holes 18, and the bottom ends of the three axial jet holes 18 respectively communicate with the scroll cavities 13.

[0026] Specifically referring to Figure 3 and Figure 4 , the jet enthalpy increasing one-way valve includes a one-way valve flange 3, a one-way valve sheet 4, and a spring 5. The one-way valve flange 3 has a rod part 31 and a plate part 32 arranged on the top of the rod part 31. The rod part 31 is inserted into the axial slot hole 16 of the fixed scroll plate 1, and the bottom of the rod part 31 is close to the top of the inner slot hole 17. The plate part 32 is arranged on the top surface of the end plate 11 to block the axial slot hole 16. There is a gap between the outer wall of the rod part 31 and the inner wall of the axial slot hole 16 to form an enthalpy increasing channel 20. The annular edge plate 10 of the fixed scroll plate 1 has radial enthalpy increasing pipe counterbores 19 communicating with the enthalpy increasing channel 20 near the axial slot hole 16. The end of the radial jet enthalpy increasing pipe 2 is connected into the radial enthalpy increasing pipe counterbores 19.

[0027] The spring 5 is arranged in the inner slot hole 17 of the fixed scroll plate 1. The one-way valve sheet 4 is movably arranged between the rod part 31 of the one-way valve flange 3 and the spring 5 to block or open the bottom of the enthalpy increasing channel 20.

[0028] As Figure 6 , when the one-way valve sheet 4 is pressed, it moves away from the rod part 31 of the one-way valve flange 3 and compresses the spring 5 to store energy, so that the bottom of the enthalpy increasing channel 20 is opened to realize the communication of the scroll cavities 13, the axial jet holes 18, the enthalpy increasing channel 20, and the radial jet enthalpy increasing pipe 2 in sequence.

[0029] As Figure 5 , the spring 5 resets the one-way valve sheet 4 to the rod part 31 of the one-way valve flange 3 to close the bottom of the enthalpy increasing channel 20, so that the axial jet holes 18 and the enthalpy increasing channel 20 are not connected.

[0030] Specifically referring to Figure 1 and Figure 2In the embodiment, a stop head 33 is arranged at the lower part of the rod part 31 of the one-way valve flange 3, the side part of the stop head 33 is provided with a plurality of uniformly arranged flow-through holes 34, the one-way valve sheet 4 can be attached to the bottom surface of the stop head 33 to block the flow-through holes 34, and the contact area with the one-way valve sheet 4 is increased by the stop head 33, so that the one-way valve sheet 4 is not deformed due to excessive pressure when it moves to the end of the rod part 31 of the one-way valve flange 3, and the flow-through holes 34 are blocked to block the enthalpy-increasing channel 20.

[0031] In the embodiment, the plate part 32 of the one-way valve flange 3 is in a long strip-shaped plate structure, and the two ends of the plate part 32 are respectively provided with end holes 320, the top surface of the end plate 11 is provided with mounting holes 110 corresponding to the end holes 320 of the one-way valve flange 3, the one-way valve flange 3 is fastened and mounted on the end plate 11 of the fixed scroll plate 1 through the bolts 6, the end holes 320 and the mounting holes 110, and the axial slot hole 16 of the fixed scroll plate 1 is blocked after the spring 5, the one-way valve sheet 4 and the one-way valve flange 3 are sequentially mounted.

[0032] In the embodiment, the upper part of the rod part 31 of the one-way valve flange 3 is further provided with a plug head 35, the outer wall of the plug head 35 abuts against the inner wall of the axial slot hole 16, the outer wall of the plug head 35 is provided with an annular groove and a sealing ring 36, and the sealing property of the one-way valve flange 3 to the axial slot hole 16 is improved by the plug head 35 and the sealing ring 36.

Claims

1. A radial jet enthalpy-increasing one-way valve structure for scroll compressor, comprising a fixed scroll plate (1), a jet enthalpy-increasing one-way valve and a radial jet enthalpy-increasing pipe (2) mounted on the fixed scroll plate (1); the fixed scroll plate (1) has an end plate (11), an annular edge plate (10) arranged on the bottom surface of the end plate (11) and scroll teeth (12) arranged on the inner side of the annular edge plate (10); the scroll teeth (12) are spirally wound to form a scroll cavity (13); the annular edge plate (10) has a radial suction pipe counterbore (14) communicating with the tail end of the scroll cavity (13); the middle part of the end plate (11) has an exhaust hole (15) communicating with the center end of the scroll cavity (13); characterized in that: The top surface of the end plate (11) has an axial slot hole (16) beside the exhaust hole (15), the middle of the bottom end of the axial slot hole (16) has an inner slot hole (17) with a narrowed hole diameter, the bottom end of the inner slot hole (17) is closed, the bottom end of the axial slot hole (16) is communicated with an axial jet hole (18), the bottom end of the axial jet hole (18) is communicated with the scroll chamber (13); The jet augmentor one-way valve comprises a one-way valve flange (3), a one-way valve sheet (4) and a spring (5), the one-way valve flange (3) has a rod part (31) and a plate part (32) on the top of the rod part (31), the rod part (31) is inserted into the axial slot hole (16) of the fixed scroll plate (1), the bottom of the rod part (31) is close to the top of the inner slot hole (17), the plate part (32) is arranged on the top surface of the end plate (11) to block the axial slot hole (16), the outer wall of the rod part (31) and the inner wall of the axial slot hole (16) have a gap to form an augmentor channel (20); the annular edge plate (10) of the fixed scroll plate (1) has a radial augmentor pipe counterbore (19) communicated with the augmentor channel (20) near the axial slot hole (16), the end of the radial jet augmentor pipe (2) is connected into the radial augmentor pipe counterbore (19); The spring (5) is arranged in the inner slot hole (17) of the fixed scroll plate (1), the one-way valve sheet (4) is movably arranged between the rod part (31) of the one-way valve flange (3) and the spring (5) to block or open the bottom of the augmentor channel (20); when the one-way valve sheet (4) is pressed, it can move away from the rod part (31) of the one-way valve flange (3) and compress the spring (5) to store force, so that the bottom of the augmentor channel (20) is opened to realize the communication of the scroll chamber (13), the axial jet hole (18), the augmentor channel (20) and the radial jet augmentor pipe (2) in sequence; the spring (5) resets the one-way valve sheet (4) to the rod part (31) of the one-way valve flange (3) to close the bottom of the augmentor channel (20) and realize the communication of the axial jet hole (18) and the augmentor channel (20); The lower part of the rod part (31) of the one-way valve flange (3) further has a blocking head part (33), the edge of the blocking head part (33) has a plurality of flow-through holes (34) arranged uniformly, and the one-way valve sheet (4) can be arranged on the bottom surface of the blocking head part (33) to block the flow-through holes (34); The plate part (32) of the one-way valve flange (3) has an elongated strip-shaped plate structure, and the two ends of the plate part (32) respectively have end holes (320), the top surface of the end plate (11) has mounting holes (110) corresponding to the end holes (320) of the one-way valve flange (3), and the one-way valve flange (3) is fastened and mounted on the end plate (11) of the fixed scroll plate (1) through the bolts (6), the end holes (320) and the mounting holes (110).

2. The radial jetic single-way valve structure for scroll compressor according to claim 1, characterized in that: The upper part of the rod part (31) of the one-way valve flange (3) further has a plug head part (35), the outer wall of the plug head part (35) abuts against the inner wall of the axial slot hole (16), and the outer wall of the plug head part (35) has an annular groove and is provided with a sealing ring (36).

3. The radial jet-refrigerant-enhalation one-way valve structure for scroll compressor according to claim 1 or 2, characterized in that: The axial jet hole (18) comprises a plurality of holes arranged around the center of the axial slot hole (16).

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