CN219412929U - Radial jet enthalpy-increasing one-way valve structure for scroll compressor - Google Patents

Abstract

The utility model provides a radial jet enthalpy-increasing check valve structure for a scroll compressor, which comprises a fixed scroll, an jet enthalpy-increasing check valve and a radial jet enthalpy-increasing pipe, wherein the fixed scroll is provided with an end plate, an annular side plate and a scroll wrap; particularly, the top surface of the end plate is provided with an axial slotted hole, the middle part of the bottom end of the axial slotted hole is provided with an inner slotted hole, and the side part of the bottom end is communicated with an axial air injection hole; the jet enthalpy increasing one-way valve comprises a one-way valve flange, a one-way valve plate and a spring, wherein the one-way valve flange is provided with a rod part and a plate part, the rod part is inserted into the axial slotted hole, the plate part seals the axial slotted hole, and an enthalpy increasing channel is arranged between the rod part and the axial slotted hole; the annular side plate is also provided with a radial enthalpy-increasing pipe counter bore communicated with the enthalpy-increasing channel and is connected with a radial jet enthalpy-increasing pipe; the spring is arranged in the inner slot hole, and the one-way valve plate is movably arranged between the rod part of the one-way valve flange and the spring, so that the bottom of the enthalpy increasing channel can be blocked or opened. The utility model can reduce the vibration of the enthalpy-increasing pipe of the radial air inlet enthalpy-increasing vortex compressor and prolong the service life.

Description

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

Technical Field

The utility model relates to the technical field of electromechanics and refrigeration, in particular to a radial jet enthalpy-increasing one-way valve structure for a scroll compressor.

Background

The jet enthalpy-increasing compressor can effectively increase the operation range of the scroll compressor, improve the operation pressure ratio of the compressor, and is widely used in air conditioning systems, heat pump systems and refrigeration systems; the air injection enthalpy-increasing hole is usually arranged on a fixed scroll of the scroll compressor, but when the air conditioning unit operates to a specific working condition, the system can inject supercooled refrigerant into a compression cavity of the scroll, so that two purposes are achieved, firstly, the air suction amount of the scroll compressor can be directly improved, and when the air injection is opened, the air suction amount of the scroll compressor is changed into the air suction hole plus the air injection amount, so that the capacity of the scroll compressor can be improved; secondly, the temperature of the vortex plate can be reduced, so that the reliability of the vortex compressor can be ensured when the vortex plate runs under the working condition of ultra-high pressure ratio, and the running range of the vortex compressor is indirectly improved;

for asymmetric vortex, when the vapor injection enthalpy increasing function is started, the moving vortex plate enables the refrigerant to be continuously sprayed into two different compression cavities between translation, meanwhile vortex teeth of the moving vortex plate can continuously cut off the spraying of the refrigerant, at the moment, the vapor injection enthalpy increasing pipe generates regular pulsation along with the movement of the moving vortex plate, when vapor injection enthalpy increasing is closed, gas in the vortex cavity can continuously impact the enthalpy increasing pipe through the enthalpy increasing hole to form regular pressure pulsation, when the running speed of the compressor is continuously improved, the result brought by the pulsation is stress fatigue of the vapor injection enthalpy increasing pipe, poor occurrence of pipe fitting cracking failure occurs when the operation speed is serious, and the service life of the vapor injection enthalpy increasing compressor is seriously influenced. In order to reduce vibration of the enthalpy-increasing pipe of the enthalpy-increasing compressor due to pressure pulsation, the reliability of the compressor is improved, and the design of the jet one-way valve is indispensable.

At present, compressors in the industry basically adopt one injection hole to perform injection enthalpy increase on a fixed scroll, but with the increasing requirements of the industry on compressor discharge capacity and the requirements on a high compression ratio compressor, a single injection hole cannot meet the industry requirements.

Disclosure of Invention

The utility model aims to provide a radial jet enthalpy-increasing one-way valve structure for a scroll compressor, which can meet the product requirements of the radial intake enthalpy-increasing scroll compressor for reducing the vibration of an enthalpy-increasing pipe and prolonging the service life of the enthalpy-increasing scroll compressor, and can also achieve the effects of increasing the air inflow of the enthalpy-increasing scroll compressor, improving the capacity of the enthalpy-increasing compressor and improving the pressure ratio of the enthalpy-increasing compressor.

The aim of the utility model can be achieved by the following technical scheme:

the radial jet enthalpy-increasing one-way valve structure for the scroll compressor comprises a fixed scroll, a jet enthalpy-increasing one-way valve and a radial jet enthalpy-increasing pipe, wherein the jet enthalpy-increasing one-way valve and the radial jet enthalpy-increasing pipe are arranged on the fixed scroll; the fixed vortex disk is provided with an end plate, an annular side plate arranged on the bottom surface of the end plate and vortex teeth arranged on the inner side of the annular side plate, vortex teeth are coiled to form a vortex cavity, the annular side plate is provided with a radial air suction pipe counter bore communicated with the tail end of the vortex cavity, and the middle part of the end plate is provided with an exhaust hole communicated with the central end of the vortex cavity, and the fixed vortex disk is characterized in that: the top surface of the end plate is provided with an axial slot hole beside the exhaust hole, the middle part of the bottom end of the axial slot hole is provided with an inner slot hole with a narrowed aperture, the bottom end of the inner slot hole is closed, the side part of the bottom end of the axial slot hole is communicated with an axial air injection hole, and the bottom end of the axial air injection hole is communicated with the vortex cavity.

The one-way valve comprises a one-way valve flange, a one-way valve plate and a spring, wherein the one-way valve flange is provided with a rod part and a plate part positioned at the top of the rod part, the rod part is inserted into an axial slotted hole of the fixed scroll, the bottom of the rod part is close to the top of the inner slotted hole, the plate part is arranged on the top surface of the end plate to seal the axial slotted hole, and a gap is formed between the outer wall of the rod part and the inner wall of the axial slotted hole to form an enthalpy-increasing channel; the annular side plate of the fixed vortex plate is provided with a radial enthalpy-increasing pipe counter bore which is positioned near the axial slot hole and communicated with the enthalpy-increasing channel, and the tail end of the radial jet enthalpy-increasing pipe is communicated in the radial enthalpy-increasing pipe counter bore.

The spring is arranged in an inner groove hole of the fixed vortex disc, and the one-way valve plate is movably arranged between the rod part of the one-way valve flange and the spring to seal or open the bottom of the enthalpy increasing channel; when the one-way valve plate is pressed, the one-way valve plate can move away from the rod part of the one-way valve flange, and the spring compresses the accumulated force, so that the bottom of the enthalpy increasing channel is opened to realize that the vortex cavity, the axial air injection hole, the enthalpy increasing channel and the radial air injection enthalpy increasing pipe are sequentially communicated; the spring can reset the one-way valve plate to the rod part of the one-way valve flange, so that the bottom of the enthalpy increasing channel is closed to realize that the axial air injection hole is not communicated with the enthalpy increasing channel.

According to the optimized scheme, the lower part of the rod part of the one-way valve flange is also provided with a blocking head part, a plurality of uniformly arranged flow holes are formed in the edge part of the blocking head part, and the one-way valve plate can be abutted to the bottom surface of the blocking head part to block the flow holes.

According to the optimization scheme, the plate part of the one-way valve flange is of a strip-shaped plate structure, two ends of the plate part are respectively provided with an end hole, the top surface of the end plate is provided with a mounting hole corresponding to the end hole of the one-way valve flange, and the one-way valve flange is fixedly mounted on the end plate of the fixed vortex plate through bolts, the end holes and the mounting holes.

According to the optimization scheme, the upper part of the rod part of the one-way valve flange is further provided with a plug head part, the outer wall of the plug head part is attached to the inner wall of the axial slotted hole, and the outer wall of the plug head part is provided with an annular groove and is provided with a sealing ring.

In an optimized scheme, the axial air injection holes comprise a plurality of axial slotted holes which are arranged around the center of the axial slotted holes.

The utility model has the following substantial characteristics and progress: when the gas enters the enthalpy increasing channel from the radial jet enthalpy increasing pipe, the one-way valve plate is pressed down and the spring is compressed by the pressure of the gas flow, the bottom of the enthalpy increasing channel is opened, and the vortex cavity, the axial jet holes, the enthalpy increasing channel and the radial jet enthalpy increasing pipe are sequentially communicated, so that the gas flow can finally enter the vortex cavity from the radial jet enthalpy increasing pipe of the fixed vortex plate. When the scroll compressor does not run the enthalpy-increasing working condition, the spring can jack up the one-way valve plate, so that the impact of gas in the scroll cavity on the radial jet enthalpy-increasing pipe is blocked, and the purpose of reducing pressure pulsation is achieved.

Drawings

Fig. 1 is a schematic cross-sectional view of a fixed scroll in accordance with the present utility model.

Fig. 2 is a schematic top view of a fixed scroll in accordance with the present utility model.

Fig. 3 is a schematic structural view of an enhanced vapor injection check valve according to the present utility model.

Fig. 4 is a schematic bottom view of the check valve flange of the present utility model.

Fig. 5 is a schematic diagram of the radial jet enthalpy increasing check valve structure for the scroll compressor in a state that the axial jet holes are not communicated with the enthalpy increasing channel.

Fig. 6 is a schematic diagram of the radial jet enthalpy increasing check valve structure for the scroll compressor in the state that the axial jet holes are communicated with the enthalpy increasing channel.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Examples

Referring to fig. 1 to 6, a radial jet enthalpy-increasing check valve structure for a scroll compressor includes a fixed scroll 1, a jet enthalpy-increasing check valve mounted on the fixed scroll 1, and a radial jet enthalpy-increasing pipe 2.

Referring specifically to fig. 1 and 2, the fixed scroll 1 has an end plate 11, an annular side plate 10 provided on the bottom surface of the end plate 11, and a scroll wrap 12 provided inside the annular side plate 10, the scroll wrap 12 is spirally wound to form a scroll chamber 13, a radial suction pipe counter bore 14 communicating with the tail end of the scroll chamber 13 is provided on the annular side plate 10, and a discharge hole 15 communicating with the center end of the scroll chamber 13 is provided in the middle of the end plate 11.

The top surface of the end plate 11 is provided with an axial slot hole 16 beside the exhaust hole 15, the middle part of the bottom end of the axial slot hole 16 is provided with an inner slot hole 17 with a narrowed aperture, the bottom end of the inner slot hole 17 is closed, the bottom edge of the axial slot hole 16 is communicated with an axial air injection hole 18, the axial air injection hole 18 comprises a plurality of axial air injection holes 18 which are arranged around the center of the axial slot hole 16, and in the embodiment, 3 axial air injection holes 18 are specifically arranged, and the bottom ends of the axial air injection holes are respectively communicated with the vortex cavity 13.

Referring to fig. 3 and 4 in particular, the jet enthalpy increasing check valve comprises a check valve flange 3, a check valve plate 4 and a spring 5. The one-way valve flange 3 is provided with a rod part 31 and a plate part 32 positioned at the top of the rod part 31, the rod part 31 is inserted into the axial slotted hole 16 of the fixed scroll 1, the bottom of the rod part is close to the top of the inner slotted hole 17, the plate part 32 is arranged on the top surface of the end plate 11 to seal the axial slotted hole 16, and a gap is formed between the outer wall of the rod part 31 and the inner wall of the axial slotted hole 16 to form an enthalpy-increasing channel 20; the annular side plate 10 of the fixed scroll 1 is provided with a radial enthalpy-increasing pipe counter bore 19 which is positioned near the axial slotted hole 16 and is communicated with an enthalpy-increasing channel 20, and the tail end of the radial jet enthalpy-increasing pipe 2 is connected in the radial enthalpy-increasing pipe counter bore 19.

The spring 5 is arranged in the inner groove hole 17 of the fixed scroll 1, and the check valve plate 4 is movably arranged between the rod part 31 of the check valve flange 3 and the spring 5 to block or open the bottom of the enthalpy increasing channel 20.

As shown in fig. 6, when the check valve plate 4 is pressed, the check valve plate can move away from the rod portion 31 of the check valve flange 3, and the spring 5 compresses the accumulated force, so that the bottom of the enthalpy increasing channel 20 is opened to realize sequential communication of the vortex cavity 13, the axial air injection hole 18, the enthalpy increasing channel 20 and the radial jet enthalpy increasing pipe 2.

In fig. 5, the spring 5 resets to reset the check valve plate 4 to the rod portion 31 of the check valve flange 3, so that the bottom of the enthalpy increasing channel 20 is closed to prevent the axial air injection hole 18 from communicating with the enthalpy increasing channel 20.

Referring to fig. 1 and fig. 2, in this embodiment, a blocking portion 33 is further disposed at a lower portion of the stem portion 31 of the check valve flange 3, a plurality of uniformly disposed flow holes 34 are disposed on an edge portion of the blocking portion 33, and the check valve plate 4 can be abutted against a bottom surface of the blocking portion 33 to block the flow holes 34, so that a contact area with the check valve plate 4 is increased through the blocking portion 33, and deformation caused by excessive compression when the check valve plate 4 moves to an end of the stem portion 31 of the check valve flange 3 is avoided, and meanwhile, blocking of the enthalpy-increasing channel 20 is further achieved through blocking of the flow holes 34.

In this embodiment, the plate portion 32 of the check valve flange 3 has a strip-shaped plate structure, two ends of the strip-shaped plate structure are respectively provided with an end hole 320, the top surface of the end plate 11 is provided with a mounting hole 110 corresponding to the end hole 320 of the check valve flange 3, the check valve flange 3 is fastened and mounted on the end plate 11 of the fixed scroll 1 through the bolts 6, the end holes 320 and the mounting holes 110, and further the purpose that after the spring 5 and the check valve plate 4 are mounted in sequence, the check valve flange 3 is mounted to seal the axial slot 16 of the fixed scroll 1 is achieved.

In this embodiment, the upper portion of the stem portion 31 of the check valve flange 3 further has a plug portion 35, the outer wall of the plug portion 35 is abutted against the inner wall of the axial slot 16, the outer wall of the plug portion 35 has an annular groove and is provided with a sealing ring 36, and thus the tightness of the check valve flange 3 to the axial slot 16 is improved through the plug portion 35 and the sealing ring 36.

Claims (5)

1. The radial jet enthalpy-increasing one-way valve structure for the scroll compressor comprises a fixed scroll (1), a jet enthalpy-increasing one-way valve and a radial jet enthalpy-increasing pipe (2), wherein the jet enthalpy-increasing one-way valve and the radial jet enthalpy-increasing pipe are arranged on the fixed scroll (1); fixed vortex dish (1) have end plate (11), locate annular sideboard (10) on end plate (11) bottom surface and locate inboard vortex tooth (12) of annular sideboard (10), vortex tooth (12) vortex form vortex chamber (13) of coiling, have radial breathing pipe counter bore (14) of intercommunication vortex chamber (13) tail end on annular sideboard (10), the middle part of end plate (11) has exhaust hole (15) of the central point of intercommunication vortex chamber (13), its characterized in that: an axial slot hole (16) is formed in the top surface of the end plate (11) beside the exhaust hole (15), an inner slot hole (17) with a narrowed aperture is formed in the middle of the bottom end of the axial slot hole (16), the bottom end of the inner slot hole (17) is closed, an axial air injection hole (18) is communicated with the bottom end edge of the axial slot hole (16), and the bottom end of the axial air injection hole (18) is communicated with the vortex cavity (13);

the jet enthalpy increasing check valve comprises a check valve flange (3), a check valve plate (4) and a spring (5), wherein the check valve flange (3) is provided with a rod part (31) and a plate part (32) positioned at the top of the rod part (31), the rod part (31) is inserted into an axial slot hole (16) of the fixed scroll (1), the bottom of the rod part is close to the top of an inner slot hole (17), the plate part (32) is arranged on the top surface of the end plate (11) to seal the axial slot hole (16), and a gap is formed 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 side plate (10) of the fixed scroll (1) is provided with a radial enthalpy-increasing pipe counter bore (19) which is positioned near the axial slotted hole (16) and is communicated with the enthalpy-increasing channel (20), and the tail end of the radial jet enthalpy-increasing pipe (2) is communicated with the radial enthalpy-increasing pipe counter bore (19);

the spring (5) is arranged in an inner slot (17) of the fixed scroll (1), and the check valve plate (4) is movably arranged between a rod part (31) of the check valve flange (3) and the spring (5) so as to seal or open the bottom of the enthalpy increasing channel (20); the one-way valve plate (4) can move away from the rod part (31) of the one-way valve flange (3) when being pressed, and the spring (5) compresses the accumulated force, so that the bottom of the enthalpy increasing channel (20) is opened to realize the sequential communication of the vortex cavity (13), the axial air injection hole (18), the enthalpy increasing channel (20) and the radial jet enthalpy increasing pipe (2); the spring (5) can reset the one-way valve plate (4) to the rod part (31) of the one-way valve flange (3) again, so that the bottom of the enthalpy increasing channel (20) is closed to realize that the axial air injection hole (18) is not communicated with the enthalpy increasing channel (20).

2. The radial jet enthalpy-increasing check valve structure for scroll compressor according to claim 1, wherein: the lower part of the rod part (31) of the one-way valve flange (3) is also provided with a blocking head part (33), a plurality of uniformly arranged flow holes (34) are formed in the edge part of the blocking head part (33), and the one-way valve plate (4) can be abutted against the bottom surface of the blocking head part (33) to block the flow holes (34).

3. The radial jet enthalpy-increasing check valve structure for scroll compressor according to claim 1, wherein: the plate part (32) of the one-way valve flange (3) is of a strip-shaped plate structure, two ends of the plate part are respectively provided with an end hole (320), the top surface of the end plate (11) is provided with a mounting hole (110) corresponding to the end hole (320) of the one-way valve flange (3), and the one-way valve flange (3) is fixedly mounted on the end plate (11) of the fixed scroll (1) through bolts (6), the end holes (320) and the mounting holes (110).

4. The radial jet enthalpy-increasing check valve structure for scroll compressor according to claim 1, wherein: the upper part of the rod part (31) of the one-way valve flange (3) is also provided with a plug head part (35), the outer wall of the plug head part (35) is clung to the inner wall of the axial slotted hole (16), and the outer wall of the plug head part (35) is provided with an annular groove and is provided with a sealing ring (36).

5. The radial jet enthalpy-increasing check valve structure for scroll compressor according to claim 1 or 2 or 3 or 4, wherein: the axial gas injection holes (18) comprise a plurality of axial gas injection holes and are arranged around the center of the axial slot holes (16).