CN115288981A - Frequency conversion compressor valve group structure and frequency conversion compressor - Google Patents
Frequency conversion compressor valve group structure and frequency conversion compressor Download PDFInfo
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- CN115288981A CN115288981A CN202211008013.4A CN202211008013A CN115288981A CN 115288981 A CN115288981 A CN 115288981A CN 202211008013 A CN202211008013 A CN 202211008013A CN 115288981 A CN115288981 A CN 115288981A
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- 238000006243 chemical reaction Methods 0.000 title claims description 7
- 230000007704 transition Effects 0.000 claims abstract description 20
- 230000036632 reaction speed Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1046—Combination of in- and outlet valve
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention discloses a variable-frequency compressor valve group structure and a variable-frequency compressor, relates to the technical field of compressors, solves the problem of low reliability of the existing compressor valve group, increases the refrigerating capacity, and ensures the reliability of an air suction valve plate, and the specific scheme is as follows: including the valve plate and be located the suction valve piece under the valve plate, be equipped with suction hole, exhaust hole and the mounting groove that is used for installing the discharge valve piece in the valve plate main part of valve plate, the exhaust hole is located the mounting groove, and the suction hole is located one side of mounting groove, the top of suction hole is equipped with the transition surface that is used for reducing the flow resistance, and the bottom of suction hole is equipped with the flaring of increase suction hole bottom area.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a variable frequency compressor valve bank structure and a variable frequency compressor.
Background
The important index of the compressor is the refrigerating capacity, namely the mass of the vapor which can be compressed in one cycle is multiplied by the enthalpy difference (the enthalpy difference is not changed in the process and only has a relation with the working condition). The suction valve plate can respond in time (namely the suction valve plate is opened earlier), the more the sucked gas is, and the larger the refrigerating capacity is. The air suction valve plate can be opened regardless of the force applied to the air suction valve plate and depending on the rigidity of the air suction valve plate, the lower the rigidity of the air suction valve plate is, the easier the air suction valve plate is to open.
The inventor finds that in the traditional method, in order to obtain larger refrigerating capacity, the rigidity of the air suction valve plate is reduced by reducing the thickness of the air suction valve plate or reducing the width of the waist part of the valve tongue, but the air suction valve plate is cracked during work due to the reduced rigidity, the reliability of the valve plate is low, and the cracking is easy to occur especially at high rotating speed (at the moment, the pressure difference changes violently, the moving speed of the valve plate is increased, and the momentum is larger when the valve plate is impacted), namely, the reliability of the high rotating speed is poor under the condition that the performance is met by the low rotating speed, and the performance of the low rotating speed is poor under the condition that the performance is met by the high rotating speed, so that the compressor can not meet the requirement of the optimal working condition.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a variable frequency compressor valve bank structure and a variable frequency compressor, wherein a transition surface is arranged at the top end of an air suction hole, a flared opening is arranged at the bottom end of the air suction hole, the flared opening and the air suction hole are eccentrically arranged, the resistance of air flow is reduced by using the transition surface, the flow is increased, meanwhile, the contact area of an air suction valve plate and air is increased by increasing the flared opening, the pressure difference required when the air suction valve plate is opened is further reduced, the air suction valve plate is convenient to open in advance, the refrigerating capacity is increased, the reliability of the air suction valve plate is also ensured, and the problem of low reliability of the conventional compressor valve bank is solved.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides a valve group structure of a variable frequency compressor, which comprises a valve plate and an air suction valve plate located right below the valve plate, wherein an air suction hole, an air exhaust hole and a mounting groove for mounting the air exhaust valve plate are arranged on a valve plate main body of the valve plate, the air exhaust hole is located in the mounting groove, the air suction hole is located on one side of the mounting groove, a transition surface for reducing flow resistance is arranged at the top end of the air suction hole, and an expanding opening for increasing the area of the bottom of the air suction hole is arranged at the bottom end of the air suction hole.
As a further realization, the transition surface is formed by at least part of the side wall of the suction hole, and the transition surface gradually extends from the bottom to the top of the transition surface in the direction away from the mounting groove.
As a further implementation, the flaring and the suction hole are eccentrically arranged.
As a further implementation, the bottom of the flare is provided with a chamfer.
As a further implementation mode, the air suction valve plate consists of a valve plate main body, a valve tongue and a vent hole, wherein the valve tongue and the vent hole are arranged on the valve plate main body, one end of the valve tongue is fixedly connected with the valve plate main body, a gap is formed between the valve tongue and the valve plate main body, and the vent hole is arranged on the valve tongue.
As a further implementation manner, the vent hole is divided into a small end and a large end, the small end is arranged at the waist position of the valve tongue, and the large end is far away from the waist of the valve tongue and is adjacent to the tongue root of the valve tongue.
As a further implementation manner, the waist portion of the valve tongue is of a waisted structure.
As a further realization mode, the vent hole is communicated with the exhaust hole on the valve plate main body.
In a second aspect, the invention provides a variable frequency compressor, which comprises a compressor main body, wherein a valve plate main body is connected with the compressor main body, a suction valve plate is positioned between the valve plate main body and the compressor main body, a suction hole and a discharge hole in the valve plate main body are communicated with a cylinder of the compressor main body, and a vent hole in the valve plate main body is communicated with the discharge hole.
As a further realization mode, the flaring on the suction hole is adjacent to the suction valve plate.
The beneficial effects of the invention are as follows:
(1) According to the invention, the transition surface is arranged at the top end of the air suction hole, the flaring is arranged at the bottom end of the air suction hole, the transition surface is utilized to reduce the resistance of air flow and increase the flow, meanwhile, the contact area of the air suction valve plate and air is increased by increasing the flaring, the pressure difference required when the air suction valve plate is opened is reduced, the air suction valve plate is convenient to open in advance, the refrigerating capacity is increased, and the reliability of the air suction valve plate is ensured.
(2) According to the invention, the flaring and the air suction hole are eccentrically arranged, the bottom of the flaring is provided with the chamfer, different cylinder diameters can be compatible, when the cylinder diameter is smaller, the arrangement difficulty of the air suction hole, the air exhaust hole and the valve tongue is reduced, the arrangement of the transition surface reduces the influence of eccentric arrangement on air inflow, and the reaction speed of the air suction valve plate is ensured.
(3) The small end of the vent hole is arranged at the waist position of the valve tongue, and the large end is far away from the waist of the valve tongue, so that the opening torque of the valve tongue can be reduced, the reaction speed of the air suction valve plate is improved, the rigidity of the waist position can be ensured as much as possible, the valve tongue is prevented from being damaged at high rotating speed, and meanwhile, the exhaust volume and the exhaust effect of the vent hole are ensured as much as possible by arranging the large end.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
FIG. 1 is a schematic top view of a valve plate according to one or more embodiments of the present invention;
FIG. 2 is a schematic bottom view of a valve plate according to one or more embodiments of the present invention;
FIG. 3 isbase:Sub>A schematic cross-sectional view of structure A-A of FIG. 1;
FIG. 4 is a schematic view of a suction valve plate according to one or more embodiments of the present invention;
in the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;
wherein, 1, the valve plate main body; 2. a suction hole; 3. an exhaust hole; 4. mounting grooves; 5. a transition surface; 6. flaring; 7. chamfering; 8. a valve plate main body; 9. a valve tongue; 10. a waist part; 11. and (4) a vent hole.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
As introduced in the background art, in the conventional method, in order to obtain a larger refrigerating capacity, the rigidity of the suction valve plate is reduced by reducing the thickness of the suction valve plate or reducing the width of the waist part of the valve tongue, but the reduction of the rigidity may cause the suction valve plate to be cracked during operation, the reliability of the valve plate is low, and the problem that the valve plate is easy to be cracked especially at a high rotating speed is solved.
Example 1
In a typical embodiment of the present invention, as shown in fig. 1 to 4, a valve set structure of a variable frequency compressor is provided, for convenience of description, a side of a valve plate close to a cylinder is taken as a bottom of the valve set structure, and the valve set structure includes the valve plate and an air suction valve plate, wherein the air suction valve plate is located right below the valve plate and is mainly used for controlling on/off of connection between an air suction hole in the valve plate and the cylinder.
Specifically, as shown in fig. 1 to 3, the valve plate comprises a valve plate main body 1, a suction hole 2 disposed on the valve plate main body 1, an exhaust hole 3, and a mounting groove 4, wherein the mounting groove 4 is a groove structure to mount an exhaust valve plate when the valve plate main body 1 is assembled in a compressor, the exhaust hole 3 is disposed in the mounting groove 4 and penetrates through the valve plate main body 1, and during the operation of the compressor, the gas in the cylinder can be discharged through the exhaust hole 3.
The top of suction hole 2 is equipped with transition surface 5, specifically as shown in fig. 3, suction hole 2 and mounting groove 4 are located valve plate main part 1 and are equipped with transition surface 5 with tip department with one side, and transition surface 5 is formed by at least partial lateral wall of suction hole 2, and transition surface 5 extends to the direction of keeping away from mounting groove 4 from its bottom to top gradually, mainly used reduces the flow resistance (the resistance of gas circulation), has increased the flow to improve the reaction rate of suction valve piece.
The bottom of suction hole 2 is equipped with flaring 6 to the area of increase suction hole 2 bottom, because power equals the pressure differential and multiplies the area, thereby under the unchangeable condition of power when the suction valve block is opened, make its required pressure differential reduce, improved the reaction rate of suction valve block, make the suction valve block open in advance, increased the refrigerating output promptly, can guarantee the reliability of suction valve block again.
As shown in fig. 2-3, the flaring 6 and the suction hole 2 are eccentrically arranged, and the bottom of the flaring 6 is provided with a chamfer 7 to be compatible with different cylinder diameters, so that when the cylinder diameter is smaller, the difficulty in arranging the suction hole 2, the exhaust hole 3 and the valve tongue 9 is reduced.
It will be understood that the eccentricity between the flared end 6 and the suction hole 2 and the direction of the eccentricity can be determined according to the actual design requirements, without being limited thereto.
The bottom of the transition surface 5 is communicated with the flaring 6, and the influence of eccentric arrangement on air inflow is reduced through the arrangement of the transition surface 5, so that the reaction speed of the air suction valve plate is ensured.
As shown in fig. 4, the suction valve plate is composed of a valve plate main body 8, a valve tongue 9 arranged on the valve plate main body 8, and a vent hole 11, specifically, the size and shape of the valve plate main body 8 are the same as those of the valve plate main body 1, the valve tongue 9 is a structure cut out from the valve plate main body 8, a waist 10 of the valve tongue 9 is a waisted structure, that is, the size of the waist 10 is smaller than that of the other positions of the valve tongue 9, one end of the valve tongue 9 is fixedly connected with the valve plate main body 8, and a gap formed after cutting is arranged between the valve tongue 9 and the valve plate main body 8.
The vent hole 11 is arranged on the valve tongue 9, specifically, the vent hole 11 is a drop-shaped structure with one small end and the other large end, wherein the small end (small head end) of the vent hole 11 is arranged at the waist 10 of the valve tongue 9, and the other end (large head end) of the vent hole 11 is far away from the waist 10 of the valve tongue 9 and the opening end of the valve tongue 9 (namely the end of the valve tongue 9 which is not connected with the valve sheet main body 8).
The vent hole 11 is communicated with the exhaust hole 3 on the valve plate main body 1, so that the gas in the cylinder can be discharged outwards through the vent hole 11 and the exhaust hole 3 in sequence.
It is understood that in other embodiments, the vent hole 11 may also be a fan-shaped structure, in which case, the fan-shaped vent hole 11 also has a small end and a large end, the small end is disposed at the waist portion 10 of the valve tongue 9, and the large end is away from the waist portion 10 and adjacent to the tongue root of the valve tongue 9 (i.e., the end of the valve tongue 9 connected to the valve plate main body 1).
The specific working principle is as follows:
when the piston moves to the top dead center (namely when the piston is close to the valve plate), the exhaust valve plate is closed at the moment, the suction valve plate is continuously closed, and at the moment, a small amount of refrigerant is reserved in the cylinder at the moment due to the existence of the gaps near the cylinder seat chamfer, the piston fillet, the exhaust hole 3 and the suction valve plate valve tongue 9;
when the piston starts to move towards the direction far away from the top dead center, the pressure in the cylinder starts to drop, pressure difference exists at two ends of the air suction valve plate, the piston continuously moves towards the direction close to the bottom dead center, the pressure difference at two ends of the air suction valve plate is increased, when the pressure difference is increased to a set value, the valve tongue 9 is opened, and the refrigerant continuously enters the cylinder from the air suction muffler through the air suction hole 2;
when the piston moves to the bottom dead center (namely the distance between the piston and the valve plate is farthest), the suction valve plate is closed, the exhaust valve plate is continuously closed, and the volume of the cylinder is the largest at the moment, namely, the refrigerant in the cylinder is the largest at the moment;
when the piston starts to move to the top dead center, the pressure in the cylinder increases, when the pressure increases to a set value, the exhaust valve plate is opened, high-pressure high-temperature gas is exhausted outwards through the vent hole 11 and the exhaust hole 3 in sequence, and the reciprocating motion is carried out.
Example 2
In another exemplary embodiment of the present invention, an inverter compressor is provided, which includes a compressor main body, a valve plate main body 1 connected to the compressor main body, and a suction valve plate located between the valve plate main body 1 and the compressor main body.
The suction hole 2 and the exhaust hole 3 on the valve plate main body 1 are communicated with a cylinder of the compressor main body, wherein the flaring 6 on the suction hole 2 is adjacent to a suction valve plate, the vent hole 11 on the valve plate main body 8 is communicated with the exhaust hole 3 on the valve plate main body 1, and an exhaust valve plate is arranged in the mounting groove 4 of the valve plate main body 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a frequency conversion compressor valves structure, its characterized in that includes the valve plate and is located the suction valve piece under the valve plate, is equipped with suction hole, exhaust hole and the mounting groove that is used for installing the discharge valve piece in the valve plate main part of valve plate, the exhaust hole is located the mounting groove, and the suction hole is located one side of mounting groove, the top of suction hole is equipped with the transition face that is used for reducing the flow resistance, and the bottom of suction hole is equipped with the flaring of increase suction hole bottom area.
2. The valve group structure of the inverter compressor of claim 1, wherein the transition surface is formed by at least a portion of a sidewall of the suction hole, and the transition surface gradually extends from a bottom to a top thereof in a direction away from the mounting groove.
3. The valve group structure of the inverter compressor according to claim 1, wherein the flaring and the suction hole are eccentrically arranged.
4. The valve group structure of the inverter compressor as claimed in claim 1, wherein the bottom of the flared opening is provided with a chamfer.
5. The valve group structure of the inverter compressor of claim 1, wherein the suction valve plate comprises a valve plate body, a valve tongue and a vent hole, the valve tongue and the vent hole are disposed on the valve plate body, one end of the valve tongue is fixedly connected with the valve plate body, a gap is formed between the valve tongue and the valve plate body, and the vent hole is disposed on the valve tongue.
6. The valve group structure of the inverter compressor as claimed in claim 5, wherein the vent hole is divided into a small end and a large end, the small end is disposed at a waist position of the valve tongue, and the large end is far away from the waist position of the valve tongue and is adjacent to a tongue root of the valve tongue.
7. The valve group structure of inverter compressor as claimed in claim 6, wherein the valve tongue has a waisted structure.
8. The valve group structure of the inverter compressor, according to claim 5, wherein said vent hole is communicated with a discharge hole of the valve plate body.
9. A variable frequency compressor, which utilizes the valve group structure of the variable frequency compressor as claimed in any one of claims 1 to 8, and is characterized by comprising a compressor main body, wherein the valve plate main body is connected with the compressor main body, a suction valve plate is positioned between the valve plate main body and the compressor main body, a suction hole and a discharge hole on the valve plate main body are communicated with a cylinder of the compressor main body, and a vent hole on the valve plate main body is communicated with the discharge hole.
10. The inverter compressor of claim 9, wherein the flared end of the suction hole is adjacent to the suction valve plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211008013.4A CN115288981A (en) | 2022-08-22 | 2022-08-22 | Frequency conversion compressor valve group structure and frequency conversion compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211008013.4A CN115288981A (en) | 2022-08-22 | 2022-08-22 | Frequency conversion compressor valve group structure and frequency conversion compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115288981A true CN115288981A (en) | 2022-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211008013.4A Pending CN115288981A (en) | 2022-08-22 | 2022-08-22 | Frequency conversion compressor valve group structure and frequency conversion compressor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005042695A (en) * | 2003-07-07 | 2005-02-17 | Calsonic Kansei Corp | Valve structure of compressor |
| CN103883501A (en) * | 2014-03-12 | 2014-06-25 | 加西贝拉压缩机有限公司 | Valve plate for refrigerator compressor |
| CN105604916A (en) * | 2016-02-21 | 2016-05-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor valve plate and compressor valve assembly |
| CN110792577A (en) * | 2019-11-11 | 2020-02-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Suction valve plate, cylinder head assembly, compressor and air conditioner |
| CN113464403A (en) * | 2021-07-06 | 2021-10-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Valve bank assembly, compressor with same and refrigerator |
| CN215213858U (en) * | 2021-06-24 | 2021-12-17 | 黄石东贝压缩机有限公司 | Air suction valve port structure for refrigeration compressor |
-
2022
- 2022-08-22 CN CN202211008013.4A patent/CN115288981A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005042695A (en) * | 2003-07-07 | 2005-02-17 | Calsonic Kansei Corp | Valve structure of compressor |
| CN103883501A (en) * | 2014-03-12 | 2014-06-25 | 加西贝拉压缩机有限公司 | Valve plate for refrigerator compressor |
| CN105604916A (en) * | 2016-02-21 | 2016-05-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor valve plate and compressor valve assembly |
| CN110792577A (en) * | 2019-11-11 | 2020-02-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Suction valve plate, cylinder head assembly, compressor and air conditioner |
| CN215213858U (en) * | 2021-06-24 | 2021-12-17 | 黄石东贝压缩机有限公司 | Air suction valve port structure for refrigeration compressor |
| CN113464403A (en) * | 2021-07-06 | 2021-10-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Valve bank assembly, compressor with same and refrigerator |
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Application publication date: 20221104 |