CN206362029U - Internal balance type heating power expansion valve - Google Patents
Internal balance type heating power expansion valve Download PDFInfo
- Publication number
- CN206362029U CN206362029U CN201621332792.3U CN201621332792U CN206362029U CN 206362029 U CN206362029 U CN 206362029U CN 201621332792 U CN201621332792 U CN 201621332792U CN 206362029 U CN206362029 U CN 206362029U
- Authority
- CN
- China
- Prior art keywords
- valve
- diaphragm
- end cover
- gas tank
- connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Temperature-Responsive Valves (AREA)
Abstract
The utility model is related to a kind of internal balance type heating power expansion valve, including valve body, gas tank is installed on valve body, capillary is connected on gas tank, capillary is connected with temperature-sensitive bag, is set and is set and drive block below diaphragm, diaphragm in gas tank, the bottom connection valve rod of drive block, valve rod is stretched into the valve pocket in valve body；Refrigerant inlet and refrigerant outlet are set on the valve body, refrigerant inlet and refrigerant outlet are connected with valve pocket, the blocking of valve opening between refrigerant inlet and valve pocket can be blocked by being set in valve body, and blocking is connected with valve rod, and spring is set in the bottom of blocking；The gas tank includes the upper end cover and bottom end cover being mutually permanently connected；It is characterized in that：Being set at the edge of the upper end cover and the inner chamber of bottom end cover has sunk area between multiple rows of projection, adjacent protrusion.The utility model can reduce the internal stress during film moves up and down, and solve the fatigue of diaphragm and damage problem, prevent that the edge in end cap up and down from producing leakage.
Description
Technical field
The utility model is related to a kind of expansion valve, especially a kind of for various refrigeration systems that the high temperature after condenser is high
Press the internal balance type heating power expansion valve of liquid refrigerant reducing pressure by regulating flow.
Background technology
Heating power expansion valve is that the system into evaporator is controlled by controlling the degree of superheat of evaporator outlet gaseous refrigerant
Cryogen flow, different according to balance mode, heating power expansion valve is divided into outer balanced type and internal balance type.Existing internal balance type heating power
The main working process of expansion valve is：Diaphragm band ovable valve stem in gas tank moves up and down, and valve rod is in valve opening interior axle to up and down motion
To adjust the circulation area of heating power expansion valve.It is general at present to be moved up and down by the way of the stamped recess on diaphragm to reduce
The internal stress produced in journey.But existing heating power expansion valve still suffers from problems with：Because diaphragm edge passes through upper and lower side
Lid welding it is solid this, during diaphragm moves up and down, the edge of diaphragm produces up-down vibration, easily on the side of end cap up and down
Leakage is produced at edge and is destroyed, causes the fatigue of diaphragm and damages.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art there is provided a kind of internal balance type thermal expansion
Valve, can reduce the internal stress during film moves up and down, and solve the fatigue of diaphragm and damage problem, prevent in end cap up and down
Edge produce leakage.
The technical scheme provided according to the utility model, the internal balance type heating power expansion valve, including valve body, on valve body
Gas tank is installed, capillary is connected on gas tank, capillary be connected with temperature-sensitive bag, set in gas tank below diaphragm, diaphragm setting and
Drive block, the bottom connection valve rod of drive block, valve rod is stretched into the valve pocket in valve body；Refrigerant inlet is set on the valve body
And refrigerant outlet, refrigerant inlet and refrigerant outlet are connected with valve pocket, in connection refrigerant inlet and the valve opening of valve pocket
Place, which is set, can block the blocking of valve opening, and blocking is connected with valve rod；The blocking bottom set spring, the lower end of spring with
The bottom connection of valve pocket；The inner chamber of gas tank is separated into upper chamber and lower chambers by the diaphragm, and capillary is connected with upper chamber, under
Chamber is connected by inner equilibrium hole with valve pocket；The gas tank includes the upper end cover and bottom end cover being mutually permanently connected, the side of diaphragm
Edge is fixed between upper end cover and bottom end cover；It is characterized in that：Set multiple rows of at the edge of the upper end cover and the inner chamber of bottom end cover
There is sunk area between projection, adjacent protrusion.
Further, multiple rows of raised diameter is incremented by from outside to inner side.
Further, the raised surface is in circular arc.
Internal balance type heating power expansion valve described in the utility model, the inside that can be reduced during film moves up and down should
Power, solves the fatigue of diaphragm and damages problem, prevents that the edge in end cap up and down from producing leakage.
Brief description of the drawings
Fig. 1 is the structural representation of internal balance type heating power expansion valve described in the utility model.
Fig. 2 is Fig. 1 A enlarged drawings.
Embodiment
With reference to specific accompanying drawing, the utility model is described in further detail.
As shown in Fig. 1~Fig. 2：The internal balance type heating power expansion valve include temperature-sensitive bag 1, capillary 2, gas tank 3, diaphragm 4,
Inner equilibrium hole 5, spring 6, valve body 7, drive block 8, valve rod 9, valve pocket 10, valve opening 11, blocking 12, upper chamber 13, lower chambers 14, on
End cap 15, bottom end cover 16, projection 17, sunk area 18, refrigerant inlet 21, refrigerant outlet 22 etc..
As shown in figure 1, internal balance type heating power expansion valve described in the utility model, including valve body 7, gas is installed on valve body 7
Capillary 2 is connected on case 3, gas tank 3, capillary 2 is connected with temperature-sensitive bag 1, diaphragm 4 is set in gas tank 3, the lower section of diaphragm 4 is set
With drive block 8, the bottom connection valve rod 9 of drive block 8, valve rod 9 is stretched into the valve pocket 10 in valve body 7；Set on the valve body 7
Refrigerant inlet 21 and refrigerant outlet 22, refrigerant inlet 21 and refrigerant outlet 22 are connected with valve pocket 10, in connection system
The blocking 12 of valve opening 11 can be blocked by being set at the valve opening 11 of cryogen import 21 and valve pocket 10, and blocking 12 is connected with valve rod 9, valve rod
9 drive blocking 12 to move up and down when moving up and down opens or closes valve opening 11；In the bottom of the blocking 12, spring 6, bullet are set
The lower end of spring 6 is connected with the bottom of valve pocket 10, and spring 6 provides a upward power to blocking 12.The diaphragm 4 is by gas tank 3
Inner chamber is separated into upper chamber 13 and lower chambers 14, and capillary 2 is connected with upper chamber 13, and lower chambers 14 pass through inner equilibrium hole 5 and valve
Chamber 10 is connected.
The gas tank 3 includes the upper end cover 15 and bottom end cover 16 being mutually permanently connected, and the edge of diaphragm 4 is fixed on upper end cover
Between 15 and bottom end cover 16.In order to avoid diaphragm 4 is during up and down motion, the edge of diaphragm 4 produces vibration and causes fatigue and damage
Bad, the utility model sets multiple rows of raised 17, the surface of projection 17 at the edge of the upper end cover 15 and the inner chamber of bottom end cover 16
In circular arc, there is sunk area 18 between adjacent protrusion 17；During diaphragm 4 moves up and down, projection 17 can be withstood
Sunk area 18 between the edge of diaphragm 4, and projection 17 can be with the vibration at the edge of Absorbing film 4, to reduce the tired of diaphragm 4
Labor.
In addition, multiple rows of raised 17 diameter is incremented by from outside to inner side, it can be propped up in order to the projection 17 of inner side
Diaphragm 4.
Operation principle of the present utility model：Refrigerant is flowed into by refrigerant inlet 21, is flowed out from refrigerant outlet 22, temperature-sensitive
Gas pressure in bag 1 is P1（Corresponding to the temperature of temperature-sensitive bag）The top of diaphragm 4 is acted on, its direction is the side for opening valve
To；Evaporating pressure P0 acts on the bottom of diaphragm 4 by inner equilibrium hole 5, and its direction is the direction of shutoff valve；P2 is to obtain
Certain degree of superheat and the reduced pressure equivalent with spring force set, act on the bottom of diaphragm 4, its direction is the side of shutoff valve
To；In normal conditions, P1=P0+P2.
When the degree of superheat increases, P1 ＞ P0+P2, the open degree increase of expansion valve is until standard-sized sheet, refrigerant flow increase；When
The degree of superheat becomes hour, and the open degree of expansion valve reduces until closing, and refrigerant flow reduces until cutout.
The utility model can reduce the internal stress during film moves up and down, and the fatigue and damage for solving diaphragm are asked
Topic, prevents that the edge in end cap up and down from producing leakage.
Claims (2)
1. a kind of internal balance type heating power expansion valve, including valve body（7）, in valve body（7）Upper installation gas tank（3）, gas tank（3）Upper connection
Capillary（2）, capillary（2）With temperature-sensitive bag（1）Connection, in gas tank（3）Middle setting diaphragm（4）, diaphragm（4）Lower section is set with passing
Motion block（8）, drive block（8）Bottom connection valve rod（9）, valve rod（9）Stretch into valve body（7）Interior valve pocket（10）In；In the valve
Body（7）Upper setting refrigerant inlet（21）And refrigerant outlet（22）, refrigerant inlet（21）And refrigerant outlet（22）With
Valve pocket（10）Connection, in connection refrigerant inlet（21）And valve pocket（10）Valve opening（11）Place's setting can block valve opening（11）'s
Blocking（12）, blocking（12）With valve rod（9）Connection；In the blocking（12）Bottom set spring（6）, spring（6）Lower end
With valve pocket（10）Bottom connection；The diaphragm（4）By gas tank（3）Inner chamber be separated into upper chamber（13）And lower chambers（14）,
Capillary（2）With upper chamber（13）Connection, lower chambers（14）Pass through inner equilibrium hole（5）With valve pocket（10）Connection；The gas tank（3）
Including the upper end cover being mutually permanently connected（15）And bottom end cover（16）, diaphragm（4）Edge be fixed on upper end cover（15）And lower end
Lid（16）Between；It is characterized in that：In the upper end cover（15）And bottom end cover（16）The edge of inner chamber multiple rows of projection is set（17）,
Adjacent protrusion（17）Between have sunk area（18）.
2. internal balance type heating power expansion valve as claimed in claim 1, it is characterized in that：Multiple rows of projection（17）Diameter by outer
Lateral inner side is incremented by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621332792.3U CN206362029U (en) | 2016-12-06 | 2016-12-06 | Internal balance type heating power expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621332792.3U CN206362029U (en) | 2016-12-06 | 2016-12-06 | Internal balance type heating power expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206362029U true CN206362029U (en) | 2017-07-28 |
Family
ID=59373696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621332792.3U Expired - Fee Related CN206362029U (en) | 2016-12-06 | 2016-12-06 | Internal balance type heating power expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206362029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440567A (en) * | 2016-12-06 | 2017-02-22 | 无锡优耐特净化装备有限公司 | Inner balance type thermal expansion valve |
-
2016
- 2016-12-06 CN CN201621332792.3U patent/CN206362029U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440567A (en) * | 2016-12-06 | 2017-02-22 | 无锡优耐特净化装备有限公司 | Inner balance type thermal expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 Termination date: 20211206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |