CN1161729A - Pressure valve for compressor - Google Patents
Pressure valve for compressor Download PDFInfo
- Publication number
- CN1161729A CN1161729A CN 95195836 CN95195836A CN1161729A CN 1161729 A CN1161729 A CN 1161729A CN 95195836 CN95195836 CN 95195836 CN 95195836 A CN95195836 A CN 95195836A CN 1161729 A CN1161729 A CN 1161729A
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- China
- Prior art keywords
- valve
- flat
- valve spring
- spring
- flat valve
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- 238000005452 bending Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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- Check Valves (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a pressure valve for a compressor, particularly for a hermetically sealed refrigerator, whose valve plate has a longitudinal recess containing a valve seat, a flat valve spring and a retainer bridge, where the effective length of the flat valve spring is larger when the valve is closed that when it is open. As a result, the valve is soft when it is near its closed position, and stiff when it is open. This ensures quick emptying of the cylinder with minimum pressure drop across the pressure valve, and the efficiency of the compressor is increased.
Description
The present invention relates to a kind of pressure valve that is used for compressor, in particular for a kind of pressure valve of air-tight refrigerating device, its valve plate has a longitudinal fluting, and this longitudinal fluting comprises a valve seat, a flat valve spring and a bridge shape holder.
Especially from DE 33 05 791 C2, people know that generally pressure valve is placed in the groove in the valve plate.From the NL type compressor of Danfoss, people know that having some recesses locatees flat valve spring and accessory plate.Bridge shape holder is pressed in the groove securely, and element is remained positioned in below it.
From DE-OS 2 215 974, the long flat valve spring in the known road of DE-OS 2 842 611 and DE 39 09 176 A1 people is fixed with this valve spring on the both sides of valve port.With screw or pin flat valve spring and bridge shape holder are fixed on the surface of valve plate.
The purpose of this invention is to provide a kind of pressure valve, can be by opening fast and the closed efficient that improves compressor, this pressure valve has the long life, and has low cost of production.
With foregoing a kind of pressure valve, the effective length by making this flat valve spring is longer during than opening of valves when valve is closed to solve described problem.
After this manner, when valve is near its operating position, obtains a soft valve, and when this opening of valves, obtain a rigid valve.Pass pressure valve when this assurance makes the rapid emptying of cylinder and have minimum pressure drop, thereby increased the efficient of compressor.It is because do not use accessory plate that this pressure valve has low cost of production.Flat valve spring can be in the location, place, two ends of groove.This enables to guarantee effectively this flat valve spring with respect to known valve location, and these valves known are only located at an end place of flat valve spring.In addition, because the edge of groove is all centering on this fact of flat valve spring on the side, so improved the wearability of valve.
This flat valve spring can advantageously keep flat arrangement with the pine oil state, but it can be fixing at the place, two ends by means of a superjacent bridge shape holder.Therefore utilize the two ends that the two ends of this bridge shape holder will this flat valve spring to remain near the bottom of groove, and the core of this flat valve spring can move up and touch bridge shape holder.
Flat valve spring is precharge pressure on opening direction advantageously.The power that this air pressure that has reduced open valve need overcome, and when the both sides of valve pressure equated, valve was just opened.
This valve can have soft opening feature, and when constantly increasing opening degree, the opening feature of valve increases progressively when initial the unlatching.Thereby weakened impact, and reduced impact to valve seat to bridge shape holder.
When complete opening, flat valve spring can play action of reset spring, guarantees the valve rapid closing.
Groove in the valve plate can have one the first recessed degree of depth, is used to install bridge shape holder, and it can have another bigger recessed degree of depth, is used to install flat valve spring.Thereby this flat valve spring can be fixed and be recessed into second and locatees and firmly be placed in below the bridge shape holder.
This flat valve spring can be bearing on several points of bottom portion of groove and bridge shape holder, and in the opened/closed cycle period of valve, these contacts change and/or move.Thereby the effective spring length degree of this flat spring will be when this valve is closed into valve seat long, therefore be the short and harder spring of soft spring when changing into this opening of valves.
This flat valve spring can utilize the protrusion stop of groove both sides, thereby has guaranteed that further it is in correct position under bridge shape holder.
This flat valve spring is at the place, two ends and all advantageously have big width above valve seat, and all narrower between valve seat and two ends.This just guarantees outside the flowing that gas can be good when opening of valves.Pressurized gas upwards enters from the depression in the narrow place of dull and stereotyped valve spring.The narrow zone of flat valve spring also helps to make valve softer.
At the board-like valve spring left part of anomaly edge is valve spring total length 15-30% place, and this flat valve spring can have first bending that makes progress.Thereby this flat valve spring is being opened on the direction by precharge.
At edge, the anomaly board-like valve spring right side is valve spring total length 1-5% place, and this flat valve spring can also have second bending that makes progress.When beginning to open, edge curved on this contacts with bridge shape holder, and it helps the precharge of flat valve spring.
When valve is closed, this flat valve spring has one first contact on the left side of bridge shape holder, and this flat valve spring can be bearing on the valve plate on the valve seat left side at place, one second contact, and this flat valve spring is bearing on the valve plate at place, the 3rd contact on the right.So just produce a soft spring, and only need a minimum pressure to be used to open valve.
When valve mediates, this flat valve spring left side still has first contact on bridge shape holder and this flat valve spring still is bearing on the valve plate on the left side, second contact, and on the right, this flat valve spring is resisted against on the bridge shape holder at place, the 4th contact.Opening of valves under equal pressure like this, and the pressure loss of passing this valve reduces widely.
When initial the unlatching, this flat valve spring left side still has first contact on bridge shape holder, and on a side on valve seat opposite, this flat valve spring can press bridge shape holder at place, the 5th contact, and this flat valve spring can be bearing on the valve plate with second bending.Thereby this flat valve spring is fixed at its right-hand member place, and makes this valve hardening.
When complete opening, this flat valve spring left side can have a surface of contact on bridge shape holder, and on a side on valve seat opposite, this flat valve spring can be resisted against on the bridge shape holder at place, the 6th contact, and this flat valve spring tightly suppresses valve plate with second bending.Thereby the valve change is very hard.And reduced the effective length of this flat valve spring.This hard valve will have a spring reset effect towards the valve seat direction, thereby guarantee the quick-make of valve.The precharge of this flat valve spring is braked this flat valve spring before acting on contact, thereby has reduced the wearing and tearing of valve seat and the noise of valve.
By accompanying drawing the present invention is described below, wherein:
Fig. 1 illustrates a possible embodiment of a flat valve spring of seeing from above;
Fig. 2 illustrates a possible embodiment of a flat valve spring of seeing from a side;
Fig. 3 illustrates a possible embodiment of the present invention, and valve is owing to back pressure is closed herein;
Fig. 4 illustrates identical embodiment, but valve is opened a little--and what illustrate is the situation of pressure when equating herein;
Fig. 5 illustrates the embodiment identical with Fig. 4, but the valve initial opening;
Fig. 6 illustrates the embodiment identical with Fig. 5, but valve is opened fully.
Fig. 1 illustrates a possible embodiment of this flat valve spring of seeing from above.This flat valve spring is the wideest at the width at its two ends 15 and 17 places and 13 places above middle valve seat 11.Two eel-like figures 18 and 19 are arranged between two ends and valve seat.These eel-like figures guarantee when gas flows from bottom to top around this flat valve spring 12, good the passing through of energy.Equally, eel-like figure 18 and 19 helps to make the valve deliquescing.
Fig. 2 illustrates a possible embodiment of this flat valve spring of seeing from a side, and first crooked 14 and second bending 16 is shown simultaneously.
Fig. 3 illustrates a valve plate 1, is the valve plate in the typical air-tight refrigeration compressor, and herein, valve plate is positioned at the top of cylinder, constitutes the top boundary of this cylinder.Valve plate 1 has a pressure valve port 10, and valve seat 11 is positioned at the upside of valve plate 1.Flat valve spring 12 is positioned at the top of valve port 10 and valve seat 11, and should be fixed on the appropriate location by flat valve spring by stacked bridge shape holder 14.
Bridge shape holder 4 peaceful board-like valve springs 12 are placed in respectively in groove 2 and 3.Groove 2 prevents the horizontal and vertical slip of this flat valve spring, and groove 3 fixed bridge shape holders 7 may be that bridge shape holder is pressed in the groove 3 here.This flat valve spring 12 5 places, the left side on bridge shape holder 4 have a contact 20.Also have a contact 21, at these 21 places, contact, bending 14 (see figure 2)s on this flat valve spring 12 contact with valve plate 1.On the right side, 22 places contact this flat valve spring 12 in the contact with valve plate 1.Because the pressure height of its below of pressure ratio of this flat valve spring top is so valve is closed.
Valve when Fig. 4 illustrates the valve pressure at both sides and equates, the precharge of valve is opened it herein.This flat valve spring 12 still contacts with 21 places at the point 20 on the valve seat left side, but on the valve seat right side, this flat valve spring leaves from putting 22, and curved edge 17 forms contact more than 23 places, contact now.Since this flat valve spring 12 on opening direction by precharge, so when valve was about to open, the pressure drop of assurance valve both sides was minimum.This means that this valve is more Zao than known pressure opening of valves.
Fig. 5 illustrates the valve when outwards flowing at the beginning.Fig. 5 and Fig. 4 difference are to no longer include at point 21 places and contact.This flat valve spring 12 has broken away from and the contacting of valve plate 1.An end place over there, 24 places produce contact to the last bent-up end of this flat valve spring 12 in the contact, and simultaneously, bending part 16 (see figure 2)s and the valve plate of this flat valve spring contact with contact 25.
Therefore this flat valve spring is fixed, and valve becomes harder.Only need very little pressure just this flat valve spring can be moved to position shown in Figure 5 from position shown in Figure 4.This means that a very little pressure difference just is enough to open valve and guarantees one than higher discharge rate.
Fig. 6 illustrates the valve complete opening.At the left end place of this flat valve spring, afterbody has risen high to consequently contacting with bridge shape holder at surface of contact 27 places.Just above valve port 10,26 places also contact with bridge shape holder at point, and at the right hand end place of this flat valve spring, 27 places contact with bridge shape holder in the contact now.Comparison shows that between Fig. 3 and Fig. 4, contact 24 have moved on at point 27 places has contact.Similar, contact 25 is also to moving to left.The active length that this means this flat valve spring reduces, and produces a very hard valve simultaneously.When valve began to cut out, this flat valve spring produced a very strong action of reset spring.Guarantee quick-make like this, but since this flat valve spring 12 on opening direction by precharge, be braked so move downward fast.The soft closure that this has guaranteed valve seat reduces to wear and tear and the noise of valve simultaneously.
Claims (16)
1, a kind of pressure valve that is used for compressor, pressure valve in particular for a kind of air-tight refrigerating device, its valve plate (1) has a longitudinal fluting (2), this groove (2) comprises a valve seat (11), a flat valve spring (12) and a bridge shape holder (4) within it, it is characterized in that the effective length of this flat valve spring (12) is long than at opening of valves the time during near its operating position at valve.
According to a kind of pressure valve of claim 1, it is characterized in that 2, this flat valve spring (12) is positioned at the place, two ends of groove (2).
According to a kind of pressure valve of claim 1 or 2, it is characterized in that 3, this flat valve spring (12) releasably keeps flat arrangement, but fixing at its place, two ends by stacked bridge shape holder (4).
4, according to each a kind of pressure valve among the claim 1-3, it is characterized in that, this flat valve spring (12) on opening direction by precharge.
According to each a kind of pressure valve among the claim 1-4, it is characterized in that 5, this flat valve spring (12) has a soft opening feature initial when opening (see figure 4), and when constantly increasing the opening degree (see figure 5), the opening feature hardening.
6, according to each a kind of pressure valve among the claim 1-5, it is characterized in that when the complete opening (see figure 6), this flat valve spring (12) has action of reset spring.
7, according to each a kind of pressure valve among the claim 1-6, it is characterized in that, groove in valve plate (1) can have the first recessed degree of depth (3) that is used to install bridge shape holder (7), and this groove can have the darker degree of depth (2) that another is used for settling this flat valve spring (12).
8, according to each a kind of pressure valve among the claim 1-7, it is characterized in that, this flat valve spring (12) is in the bottom of groove (2) and have several contacts (20,21,22,23,24,25,26,27) on bridge shape holder (7), in the opened/closed cycle period of valve, the position change of these contacts (20,21,22,23,24,25,26,27) and/or mobile.
9, according to each a kind of pressure valve among the claim 1-8, it is characterized in that this flat valve spring (12) is fixed with the protrusion of groove (2) both sides.
10, according to each a kind of pressure valve among the claim 1-9, it is characterized in that, this flat valve spring (12) has big width and has big width (13) in the top of valve seat (11) in two ends places (15,17), and between valve seat (11) and two ends (15,17) width narrower (18,19).
11, according to each a kind of pressure valve among the claim 1-10, it is characterized in that this flat valve spring (12) is that valve spring total length 15-30% place has first bending (14) that makes progress at edge, the distance left side.
12, according to each a kind of pressure valve among the claim 1-11, it is characterized in that this flat valve spring (12) is that valve spring total length 1-5% place also has second bending (16) that makes progress at edge, the distance right side.
13, according to each a kind of pressure valve among the claim 1-12, it is characterized in that, when valve closure (see figure 3), this flat valve spring (12) left side on bridge shape holder (4) has a contact (20), and this flat valve spring (12) is located to be bearing on the valve plate (1) on valve seat (11) left side in contact (21), and this flat valve spring (12) is bearing in contact (22) and locates on the right.
14, according to each a kind of pressure valve among the claim 1-12, it is characterized in that, when valve mediates (see figure 4), this flat valve spring (12) left side on bridge shape holder (7) has a contact (20), and this flat valve spring (12) is located to be bearing on the valve plate (1) on valve seat (11) left side in contact (21), and this flat valve spring (12) is located to be resisted against on the bridge shape holder (4) in contact (23) on the right.
15, according to each a kind of pressure valve among the claim 1-12, it is characterized in that, when beginning to open (see figure 5), this flat valve spring (12) left side on bridge shape holder (4) has a contact (20), and in the relative side of valve seat (11), this flat valve spring (12) is located to be resisted against on the bridge shape holder (4) in contact (24), and this flat valve spring (12) is located to be pressed on the valve plate (1) in crooked (16).
16, according to each a kind of pressure valve among the claim 1-12, it is characterized in that, when complete opening, this flat valve spring (12) on the left side has a surface of contact (27) against bridge shape holder (4), and on the relative side of valve seat (11), this flat valve spring (12) is located to be resisted against on the bridge shape holder (4) in contact (27), and this flat valve spring (12) is located to be pressed on the valve plate (1) in crooked (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95195836 CN1161729A (en) | 1994-10-24 | 1995-10-19 | Pressure valve for compressor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK1228/94 | 1994-10-24 | ||
| CN 95195836 CN1161729A (en) | 1994-10-24 | 1995-10-19 | Pressure valve for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1161729A true CN1161729A (en) | 1997-10-08 |
Family
ID=5083007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95195836 Pending CN1161729A (en) | 1994-10-24 | 1995-10-19 | Pressure valve for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1161729A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396926C (en) * | 2003-06-26 | 2008-06-25 | 乐金电子(天津)电器有限公司 | Spitting valve apparatus for hermetic compressor |
| CN104481845A (en) * | 2014-11-28 | 2015-04-01 | 快意（江门）压缩机有限公司 | Energy-saving air compressor |
-
1995
- 1995-10-19 CN CN 95195836 patent/CN1161729A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396926C (en) * | 2003-06-26 | 2008-06-25 | 乐金电子(天津)电器有限公司 | Spitting valve apparatus for hermetic compressor |
| CN104481845A (en) * | 2014-11-28 | 2015-04-01 | 快意（江门）压缩机有限公司 | Energy-saving air compressor |
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