CN211288032U - Air valve structure for reciprocating piston compressor - Google Patents
Air valve structure for reciprocating piston compressor Download PDFInfo
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- CN211288032U CN211288032U CN201921561260.0U CN201921561260U CN211288032U CN 211288032 U CN211288032 U CN 211288032U CN 201921561260 U CN201921561260 U CN 201921561260U CN 211288032 U CN211288032 U CN 211288032U
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Abstract
The utility model discloses a pneumatic valve structure for reciprocating piston compressor, including valve plate, suction valve block, discharge valve block and exhaust stopper. The valve plate is provided with an air suction duct, an air suction valve seat surface, an air exhaust duct and an air exhaust valve seat surface, the air suction valve plate and the air suction valve seat surface are matched to form sealing and through flow of the air suction duct, and the air exhaust valve plate and the air exhaust valve seat surface are matched to seal and through flow of the air exhaust duct. The air suction duct and the air exhaust duct adopt a necking design in the flowing direction of the refrigerant, and the side surface of the duct is an arc surface, a conical surface or the combination of the arc surface and the conical surface. The left and right boundary straight-line segments of the diversion arc surface are in tangent connection with the left and right edge arc segments of the air suction hole opening. And an exhaust limiter is arranged on the exhaust side to limit and control the exhaust valve plate. The utility model provides a can promote gas transmission density's pneumatic valve structure to promote the mass flow and the refrigerating output of pneumatic valve as far as possible through pore entrance water conservancy diversion cambered surface of breathing in.
Description
Technical Field
The utility model belongs to the technical field of the reciprocating piston compressor technique and specifically relates to a be applied to air valve structure for reciprocating piston compressor.
Background
The air valve structure for the reciprocating compressor greatly influences the energy efficiency ratio of the compressor, and the design of the air valve needs to pay attention to the shapes and the sizes of air suction and exhaust channels. In the air suction process, refrigerant gas flows through an air suction duct, when the pressure in an air cylinder is smaller than the pressure in the air suction duct, an air suction valve plate is opened, an exhaust valve plate is closed, the air suction valve plate is dynamically changed in opening and closing due to the dynamic change of the pressure at two sides of the air suction valve plate, and the flow conductivity and the gas transmission density of the air suction duct are key factors influencing the air suction mass flow; in the exhaust process, refrigerant gas flows through the exhaust duct, when the pressure in the cylinder is greater than the pressure in the exhaust duct, the exhaust valve plate is opened, the air suction valve plate is closed, the exhaust valve plate is also dynamically changed in opening and closing due to the dynamic change of the pressure on two sides of the exhaust valve plate, and the air transmission density of the exhaust duct also influences the exhaust mass flow. In the processes of air suction and air exhaust, how to improve the flow guide capacity and the air transmission density is a key problem to be solved for developing a high-efficiency air valve, and is a technical difficulty for developing a high-efficiency and small-sized compressor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an efficient is air valve structure for reciprocating piston compressor is provided.
For solving the technical problem, the utility model relates to a pneumatic valve structure for reciprocating piston compressor, including valve plate, suction hole, exhaust duct, suction valve piece and discharge valve piece, its characterized in that, the valve plate on be provided with the installation cavity, the exhaust duct runs through in installation cavity department, the discharge valve piece is located the installation cavity and covers on the exhaust duct, is provided with the exhaust limiting plate in the installation cavity, the one end protrusion of exhaust limiting plate is provided with the briquetting, the briquetting compresses tightly the one end of fixing at the discharge valve piece, the middle part orientation of exhaust limiting plate keep away from the one end arch of discharge valve piece and with the discharge valve piece between form and be used for supplying discharge valve piece wobbling swing space.
According to the air valve structure for the reciprocating piston type compressor, the air suction duct and the air exhaust duct are designed in a necking mode in the flowing direction of the refrigerant, and the side face of the duct adopts an arc surface, a conical surface or the combination of the arc surface and the conical surface.
In the above air valve structure for reciprocating piston compressor, the taper of the air suction duct is in the range of [5 ]o，30o]Preferably, the taper of the exhaust duct is [5 ]o，35o]Within the interval is preferred.
In the above air valve structure for the reciprocating piston compressor, the shapes of the air suction duct and the air outlet of the air exhaust duct may be circular, elliptical or elongated groove-shaped structures.
According to the air valve structure for the reciprocating piston type compressor, the air suction duct can be provided with the flow guide arc surface at the inlet, and the left and right boundary straight-line segments of the flow guide arc surface are in tangent connection with the left and right edge arc segments of the air suction duct opening.
The air valve structure for the reciprocating piston compressor is characterized in that the air valve can be designed on both the air suction side and the air exhaust side, or can be designed on only one side.
Above-mentioned valve structure for reciprocating piston compressor, the valve plate body is powder metallurgy spare or steelwork.
The utility model discloses owing to adopted above-mentioned technical solution, on refrigerant flow direction, breathe in and all adopt glossy throat design with the exhaust duct to at the entrance design area biggest water conservancy diversion cambered surface in the duct of breathing in, greatly promoted the pneumatic valve breathe in with the exhaust-process, defeated gas density, mass flow, refrigeration capacity and energy efficiency ratio. The utility model discloses pneumatic valve structure can effectively promote the efficiency ratio of compressor, is particularly useful for small dimension compressor.
Drawings
FIG. 1 is a schematic view of the gas valve of the present invention;
FIG. 2 is an assembly view of the air valve of the present invention;
FIG. 3 is a schematic view of the internal cross-sectional structure of the exhaust side of the air valve of the present invention;
FIG. 4 is a schematic view of the exhaust surface of the valve plate of the air valve of the present invention;
FIG. 5 is a schematic view of the suction surface of the valve plate of the air valve of the present invention;
FIG. 6 is a schematic view of the cross-sectional structure of the inside of the air intake and exhaust channel of the air valve of the present invention;
FIG. 7 is a curve of the volume flow at the outlet of the air suction channel of the air valve of the present invention changing with time;
fig. 8 is a curve of the volume flow at the outlet of the exhaust vent of the air valve according to the present invention, which varies with time.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3 and fig. 6, the utility model discloses air valve structure for reciprocating piston compressor includes valve plate 11, suction valve piece 3, discharge valve piece 5, valve plate gasket 4 and exhaust stopper 7, is equipped with suction duct 1 on the valve plate 11, suction valve seat terminal surface 12, discharge duct 2 and discharge valve seat terminal surface 13. In the air suction process, when the pressure in the cylinder is smaller than the pressure of the air suction side, the air suction valve plate 3 is opened, the exhaust valve plate 5 seals the end surface 13 of the exhaust valve seat, and refrigerant gas enters the cylinder through the air suction duct 1; in the exhaust process, when the pressure in the cylinder is larger than the pressure of the exhaust side, the exhaust valve plate 5 is opened, the suction valve plate 3 forms a seal with the suction valve seat end face 12, and the refrigerant gas is exhausted through the exhaust duct 2. The valve plate gasket 4 is assembled with the air suction valve plate 3 through a screw, the disturbance part of the air suction valve plate 3 is limited in the air suction process, the air suction valve plate 3 is limited to enter the cylinder with specific rigidity, and then the air suction valve plate rebounds to contact the end face 12 of the air suction valve seat. The exhaust limiting stopper 7 is assembled with the exhaust valve plate 5 through a tail pressing block 10, the position of the pressing block 10 limits the disturbance position of the exhaust valve plate 5, the exhaust valve plate moves upwards with specific rigidity to contact the limiting stopper 7, and the exhaust valve plate rebounds to contact the end face 13 of the exhaust valve seat.
As shown in fig. 4, 5 and 6, the suction duct 1 and the discharge duct 2 are designed to be constricted in the refrigerant flow direction, and the guide having the largest area is designed at the inlet of the suction duct 1And a flow arc surface 6. When the valve is operating stably, the volume flows on the intake and exhaust sides are stable and periodically changed, as shown in fig. 7 and 8. The volume flow is the product of the cross section and the flow velocity, a hole channel with a necking design is adopted in the flow direction of the refrigerant, the cross section area of an inlet is large, the flow velocity is small, the cross section area of an outlet is small, the flow velocity is large, and the flow velocity of the inlet of the hole channel is small and the pressure is strong according to the Bernoulli equation; the flow rate at the outlet of the pore passage is high, the pressure intensity is low, and in addition, the pressure at the inlet of the pore passage is high, the temperature is high, and the density is low; the pressure at the outlet of the pore passage is small, the temperature is low, and the density is high. Therefore, the density of the refrigerant at the outlet of the duct is high, and the mass flow of the outlet of the suction duct 1 and the outlet of the exhaust duct 2 in the necking design is high through the amplification effect of the rotating speed (when the power system is 50Hz, the rotating speed is 2940 rpm), so that the high mass flow and the energy efficiency ratio are correspondingly high. Preferably, according to the experimental results, when the suction duct 1 is a tapered hole, the taper is 26.7oMeanwhile, the exhaust duct 2 is a taper hole with 10 taperoCompared with a straight hole air suction and exhaust hole channel, the refrigerating capacity is improved by 2.35 percent, and the energy efficiency ratio is improved by 2.23 percent. The efficiency of this patent pneumatic valve reaches the optimal state, can dispose the motor that the stack thickness is lower or the less motor of stator punching, reduces the volume of compressor core, provides powerful technical support for developing high-efficient and miniaturized compressor, is particularly useful for small dimension closed refrigeration compressor.
Claims (6)
1. The utility model provides an air valve structure for reciprocating piston compressor, includes valve plate, suction duct, exhaust duct, suction valve piece and discharge valve piece, its characterized in that, the valve plate on be provided with the installation cavity, the exhaust duct runs through in installation cavity department, the discharge valve piece is located the installation cavity and covers on the exhaust duct, is provided with the exhaust limiting plate in the installation cavity, the one end protrusion of exhaust limiting plate is provided with the briquetting, the briquetting compresses tightly and fixes the one end at the discharge valve piece, the middle part orientation of exhaust limiting plate keep away from the one end arch of discharge valve piece and form between the discharge valve piece and be used for supplying the wobbling swing space of discharge valve piece.
2. The valve structure for a reciprocating piston compressor as claimed in claim 1, wherein the suction port and the discharge port are formed in a tapered shape in a refrigerant flowing direction, and a side surface of the port is formed in a curved surface, a tapered surface, or a combination of the curved surface and the tapered surface.
3. An air valve structure for a reciprocating piston compressor according to claim 1, characterized in that the conicity of said suction port is in the range of [5 ]o，30o]In the interval, the taper of the exhaust duct is in a range of [5 ]o，35o]An interval.
4. A valve train for a reciprocating piston compressor as claimed in claim 1, 2 or 3 wherein said suction port and discharge port outlets are in the form of slots of circular, oval or elongated configuration.
5. The air valve structure for a reciprocating piston compressor as claimed in claim 4, wherein the air suction port is provided at an inlet with a flow guide arc surface, and right and left boundary straight line segments of the flow guide arc surface are tangentially connected with right and left edge arc segments of the air suction port opening.
6. A valve train for a reciprocating piston compressor as claimed in claim 1, 2 or 3, characterized in that the valve plate body is of powder metallurgy or steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921561260.0U CN211288032U (en) | 2019-09-19 | 2019-09-19 | Air valve structure for reciprocating piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921561260.0U CN211288032U (en) | 2019-09-19 | 2019-09-19 | Air valve structure for reciprocating piston compressor |
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| Publication Number | Publication Date |
|---|---|
| CN211288032U true CN211288032U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921561260.0U Active CN211288032U (en) | 2019-09-19 | 2019-09-19 | Air valve structure for reciprocating piston compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796977A (en) * | 2021-01-21 | 2021-05-14 | 加西贝拉压缩机有限公司 | Air suction limiting structure of reciprocating piston type compressor for refrigeration |
-
2019
- 2019-09-19 CN CN201921561260.0U patent/CN211288032U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796977A (en) * | 2021-01-21 | 2021-05-14 | 加西贝拉压缩机有限公司 | Air suction limiting structure of reciprocating piston type compressor for refrigeration |
| CN112796977B (en) * | 2021-01-21 | 2022-07-15 | 加西贝拉压缩机有限公司 | Air suction limiting structure of reciprocating piston type compressor for refrigeration |
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