CN202056349U - High-capacity four-way reversal valve used for refrigeration system - Google Patents
High-capacity four-way reversal valve used for refrigeration system Download PDFInfo
- Publication number
- CN202056349U CN202056349U CN2011201191597U CN201120119159U CN202056349U CN 202056349 U CN202056349 U CN 202056349U CN 2011201191597 U CN2011201191597 U CN 2011201191597U CN 201120119159 U CN201120119159 U CN 201120119159U CN 202056349 U CN202056349 U CN 202056349U
- Authority
- CN
- China
- Prior art keywords
- valve
- layer
- valve body
- piston
- refrigeration system
- 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
Links
Images
Landscapes
- Fluid-Driven Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The utility model discloses a high-capacity four-way reversal valve used for a refrigeration system, which belongs to a valve for changing refrigeration working medium flow direction. The traditional four-way reversal valve has the defect that a piston is stuck due to lack of lubricating oil caused by the reason that an oil film has big possibility of being cleaned and removed by refrigerant after halting. The high-capacity four-way reversal valve used for the refrigeration system mainly comprises a main valve and a pilot valve, wherein the pilot valve is communicated with the cavity of the main valve via an air duct; the main valve comprises a valve body, a piston and two end covers, wherein the piston is arranged in the valve body; the two end covers are arranged at two ends of the valve body; the valve body is provided with four valve ports; a lubrication bushing is arranged between the inner surface of the valve body and the piston and is fixedly connected with the valve body; the lubrication bushing is provided with a through hole which corresponds to and is communicated with the valve port and is divided into a steel matrix layer, a copper base alloy powder layer and a solid lubrication layer from outside to inside on the radial direction; a first layer and a second layer are sintered into a whole, a third layer is rolled on the surface of the second layer; and solid lubrication material performs the action on lubricating the piston to ensure that the piston flexibly moves without being stuck, and the service life is prolonged.
Description
Technical field
The utility model belongs to the valve that changes the refrigeration working medium flow direction in a kind of refrigeration system, and is especially relevant with big capacity four-way change-over valve with a kind of refrigeration system.
Background technique
Big capacity four-way change-over valve generally is applied in the heat pump type air conditioner.Common refrigeration system is made up of pilot valve and main valve with big capacity four-way change-over valve, main valve comprises steel valve body, be positioned at the spheroidal graphite cast iron piston of valve body and be arranged at two end caps at valve body two ends, the valve body of main valve, piston and end cap are formed left and right two cavitys, pilot valve is communicated with the cavity of main valve by air pipe, be respectively arranged with valve on the air pipe, be provided with the venting gas appliance that to close between valve and the main valve cavity; Piston mainly utilizes the inner system's pressure reduction that exists of four-way change-over valve to carry out mobile working; shut down and ambient temperature when being lower than zero degree at four-way valve; reason owing to pressure reduction; liquid refrigerant is moved to low one section of pressure from high one section of pressure; then in the refrigerant migration process; oil film in the valve body easily cooled dose of cleaning tape from; cause piston under oil-free lubrication, to move; formed the dry friction of steel and cast iron materials; after using a period of time; piston will wear and tear in valve body and pull and stuck, makes the valve can't proper functioning.
The model utility content
The purpose of this utility model be exactly to overcome after the shutdown that aforementioned four-way change-over valve exists oil film easily cooled dose of cleaning tape provide a kind of piston that can guarantee in valve body, to move flexibly refrigeration system with big capacity four-way change-over valve from causing the defective that lacks lubricant oil and make seizure of piston.
For this reason, the utility model is by the following technical solutions: refrigeration system is with big capacity four-way change-over valve, mainly form by main valve and pilot valve, pilot valve is communicated with the cavity of main valve by air pipe, main valve comprises valve body, be arranged at piston and two end caps that are arranged at the valve body two ends in the valve body, four valve ports are set on the valve body, piston is I-shaped member rotation 90 degree that stagger by two view shapes and is connected as a single entity and constitutes, it is characterized in that: between described valve interior surface and the described piston lubricating sleeve is set, this lubricating sleeve is fixedlyed connected with valve body, lubricating sleeve is provided with through hole corresponding with described valve port and that be communicated with, lubricating sleeve is divided into two-layer at least diametrically from outside to inside, first layer is the steel base layer, and the second layer is the copper base alloy bisque, and first layer and second layer sintering are connected as a single entity.
Copper base alloy bisque surface bite-resistant performance is good, and chemical composition is relatively stable, and anti-corrosion capacity is strong, and is the friction of two kinds of metals between the piston, and is stuck even also be not easy damage under the oil-free lubrication situation.
As to technique scheme replenish and perfect, the utility model also comprises following technical characteristics:
Described lubricating sleeve is rolled by a light sheet and forms, and is easy to manufacture.
Further, described copper base alloy bisque internal surface is disposed with a plurality of oil storage tanks, and lubricant oil can be temporarily stored in the oil storage tank, increases lubricating piston.
As mode in another, the rolling one deck low-friction material of described copper base alloy bisque internal surface forms solid lubricant layer.
Further, described solid lubrication laminar surface can also be provided with oil storage tank.
Use the utility model can reach following beneficial effect: by the lubricating sleeve with bite-resistant copper base alloy bisque and selflubricating solid lubricant layer is set between valve body and piston, avoided producing dry friction between piston and the valve body, the assurance piston moves in valve body flexibly can be not stuck, increased the working life of four-way change-over valve.
Description of drawings
Fig. 1 is a plan view of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 2.
Fig. 4 is the utility model lubricating sleeve master apparent direction sectional view.
Fig. 5 is the utility model lubricating sleeve left side apparent direction sectional view.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
As Fig. 1～shown in Figure 5, the utility model mainly is made up of main valve and pilot valve 4, pilot valve 4 is communicated with the cavity of main valve by air pipe 3, main valve comprises valve body 1, be arranged at piston 7 and two end caps 2 that are arranged at the valve body two ends in the valve body, four valve ports 6 are set on the valve body 1, piston 7 is I-shaped member rotation 90 degree that stagger by two view shapes and is connected as a single entity and constitutes, between valve body 1 internal surface and the piston 7 lubricating sleeve 5 is set, lubricating sleeve 5 is fixedlyed connected with valve body 1, lubricating sleeve 5 is provided with and the valve port 6 corresponding through holes 9 that also are communicated with, lubricating sleeve 5 is divided into three layers diametrically from outside to inside, first layer is a steel base layer 8, the second layer is that the copper base alloy bisque is a solid lubricant layer 11 for 10, the three layers, and second layer main material is the tin bronze powder, the 3rd layer of low-friction material modified polyacetal is main, first layer and second layer sintering are connected as a single entity, and the 3rd layer rolling at the 3rd laminar surface, and the 3rd laminar surface is provided with oil storage tank.Lubricating sleeve 5 is rolled by the light sheet with above-mentioned three-decker and forms.Piston slides in lubricating sleeve cover intracoelomic cavity, and solid lubricant can have been avoided producing dry friction between piston and the valve body to the piston lubricate under no oily situation.
As another kind of mode of execution, lubricating sleeve 5 is divided into two-layer diametrically from outside to inside, and first layer is a steel base layer 8, and the second layer is a copper base alloy bisque 10, and copper base alloy bisque 10 internal surfaces are disposed with a plurality of oil storage tanks.
Claims (5)
1. refrigeration system is with big capacity four-way change-over valve, mainly form by main valve and pilot valve (4), pilot valve (4) is communicated with the cavity of main valve by air pipe (3), main valve comprises valve body (1), be arranged at the piston (7) in the valve body (1) and be arranged at two end caps (2) at valve body two ends, four valve ports (6) are set on the valve body (1), piston (7) is I-shaped member rotation 90 degree that stagger by two view shapes and is connected as a single entity and constitutes, it is characterized in that: between described valve body (1) internal surface and the described piston (7) lubricating sleeve (5) is set, lubricating sleeve (5) is fixedlyed connected with valve body (1), lubricating sleeve (5) is provided with through hole (9) corresponding with described valve port (6) and that be communicated with, lubricating sleeve (5) is divided into two-layer at least diametrically from outside to inside, first layer is steel base layer (8), the second layer is copper base alloy bisque (10), and first layer and second layer sintering are connected as a single entity.
2. refrigeration system according to claim 1 is with big capacity four-way change-over valve, and it is characterized in that: described lubricating sleeve (5) is rolled by a copper material thin plate and forms.
3. refrigeration system according to claim 1 and 2 is with big capacity four-way change-over valve, and it is characterized in that: described copper base alloy bisque (10) internal surface is disposed with a plurality of oil storage tanks.
4. refrigeration system according to claim 1 and 2 is characterized in that: the rolling one deck low-friction material formation of described copper base alloy bisque internal surface solid lubricant layer (11) with big capacity four-way change-over valve.
5. refrigeration system according to claim 4 is with big capacity four-way change-over valve, and it is characterized in that: described solid lubrication laminar surface can also be provided with oil storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201191597U CN202056349U (en) | 2011-04-21 | 2011-04-21 | High-capacity four-way reversal valve used for refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201191597U CN202056349U (en) | 2011-04-21 | 2011-04-21 | High-capacity four-way reversal valve used for refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202056349U true CN202056349U (en) | 2011-11-30 |
Family
ID=45016321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201191597U Expired - Fee Related CN202056349U (en) | 2011-04-21 | 2011-04-21 | High-capacity four-way reversal valve used for refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202056349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226482A (en) * | 2011-04-21 | 2011-10-26 | 浙江新三荣制冷有限公司 | Piston four-way reversing valve for refrigerating system |
-
2011
- 2011-04-21 CN CN2011201191597U patent/CN202056349U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226482A (en) * | 2011-04-21 | 2011-10-26 | 浙江新三荣制冷有限公司 | Piston four-way reversing valve for refrigerating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201636125U (en) | Oil-free lubricating structure of power cylinder | |
| CN201065934Y (en) | Drum-shape sealing ring | |
| CN102226482A (en) | Piston four-way reversing valve for refrigerating system | |
| CN202165246U (en) | Piston used on air compressor | |
| CN102242814A (en) | Piston type four-way reversing valve | |
| CN202056349U (en) | High-capacity four-way reversal valve used for refrigeration system | |
| CN102162543A (en) | Four-way reversing valve for refrigerating system | |
| CN204692311U (en) | A kind of connection rod of automobile engine bearing shell | |
| CN202056379U (en) | Large-volume four-way reversing valve | |
| CN109236596B (en) | Swash plate type hydraulic axial plunger pump/motor heavy-load slipper pair antifriction disc | |
| CN202056350U (en) | Four-way reversing valve | |
| CN203051478U (en) | Thrust bearing | |
| CN204901296U (en) | Liquid lubricated heavily loaded bearing mechanism | |
| CN105090258A (en) | Rolling bearing structure of gear pump and gear pump | |
| CN104747605A (en) | Bearing block structure | |
| CN204371679U (en) | Rotary compressor | |
| CN206530604U (en) | A kind of brshless DC motor oiliness bearing | |
| CN209705102U (en) | Highly corrosion resistant hub bearing | |
| CN113494456A (en) | Bearing for compressor and compressor | |
| CN202125614U (en) | Combined oil seal | |
| CN203081848U (en) | Circulating pump sealing structure under negative pressure or atmospheric pressure state | |
| CN211398301U (en) | Spherical oil-retaining bearing | |
| CN204140314U (en) | Compressor crankcase and the compressor with it | |
| CN201992075U (en) | Double-lip-opening seal ring | |
| CN216642298U (en) | Double-rolling-structure gear chamber cover of air-cooled diesel engine and air-cooled diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20140421 |