CN202371944U - Double-expansion valve throttling device - Google Patents
Double-expansion valve throttling device Download PDFInfo
- Publication number
- CN202371944U CN202371944U CN2011205296583U CN201120529658U CN202371944U CN 202371944 U CN202371944 U CN 202371944U CN 2011205296583 U CN2011205296583 U CN 2011205296583U CN 201120529658 U CN201120529658 U CN 201120529658U CN 202371944 U CN202371944 U CN 202371944U
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- CN
- China
- Prior art keywords
- expansion valve
- compressor
- magnetic valve
- valve
- evaporator
- 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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Abstract
The utility model relates to a double-expansion valve throttling device. The double-expansion valve throttling device is characterized in that a compressor, a condenser, a dry filter and a sight glass are sequentially connected; the back of the sight glass is divided into two paths which are connected with an electromagnetic valve I and an electromagnetic valve II; the electromagnetic valve I and a thermostatic expansion valve I are sequentially connected with an inlet of an evaporator; the electromagnetic valve II and the thermostatic expansion valve II are sequentially connected with another inlet of the evaporator; and an outlet of the evaporator is connected with the compressor. The double-expansion valve throttling device has the advantages: the flow rate of a refrigerant inside the evaporator is adjusted to ensure the flow velocity of the refrigerant and return oil of the outlet of the evaporator and the effective return oil of the compressor, thereby the operational stability of machine sets is improved.
Description
Technical field
The present invention relates to a kind of expansion valve throttling device, relate in particular to a kind of pair of expansion valve throttling device.
Background technology
In the test of air-conditioning unit, find; Be furnished with single heating power expansion valve and singly advance in the air-conditioning system that singly goes out evaporimeter; When compressor unloading to running on the lower load, from the compressor oil mirror, observe the liquid level of lubricating oil, be in usually below oily mirror 1/3 liquid level; Cause compressor lubrication not enough, compressor exhaust temperature is too high.And disposing dual-coil electromagnetic valve, two heating power expansion valves and two chambeies are fully independently in the air-conditioning system of evaporimeter, even under running on the lower load, compressor oil level all the time in oily mirror 1/3 ~ 2/3 scope, oil return in order, unit operation is stable.
Summary of the invention
The purpose of the utility model is to provide a kind of pair of expansion valve throttling device, and this device can improve unit operation stability.
The utility model is realized like this; It comprises fully independently evaporimeter of compressor, condenser, device for drying and filtering, visor, magnetic valve I, magnetic valve II, heating power expansion valve I, heating power expansion valve II and two chambeies; It is characterized in that compressor, condenser, device for drying and filtering and visor are connected successively; Divide two-way to connect magnetic valve I and magnetic valve II behind the visor; One import is connected successively with evaporimeter for magnetic valve I, heating power expansion valve I, and magnetic valve II, another import of heating power expansion valve II and evaporimeter are connected successively, and evaporator outlet connects compressor.
The technique effect of the utility model is: solved effective oil return of compressor, improved the operation stability of unit.
Description of drawings
Fig. 1 is the schematic diagram of the utility model.
Compressor in the drawings 1; 2, condenser; 3, device for drying and filtering; 4, visor; 5, magnetic valve I; 6, magnetic valve II; 7, heating power expansion valve I; 8, heating power expansion valve II; 9, evaporimeter.
The specific embodiment
As shown in Figure 1; The utility model is realized like this; Compressor 1, condenser 2, device for drying and filtering 3 and visor 4 are connected successively, and visor 4 backs divide two-way to connect magnetic valve I 5 and magnetic valve II 6, and 9 one imports are connected successively with evaporimeter for magnetic valve I 5, heating power expansion valve I 7; 9 another imports are connected successively with evaporimeter for magnetic valve II 6, heating power expansion valve II 8, and evaporimeter 9 outlets connect compressor 1.
1) compressor is when the above operation of 50% load, and magnetic valve 1, magnetic valve 2 are opened, and cold-producing medium gets into two chambeies of evaporimeter, assurance evaporator outlet refrigerant flow and oil return flow velocity respectively through heating power expansion valve 1, heating power expansion valve 2.
2) compressor unloading to 50% load and when following, magnetic valve 1 is opened, magnetic valve 2 cuts out, and cold-producing medium gets in the chamber of evaporimeter through heating power expansion valve 1, and half heat exchanger of evaporimeter is not worked, assurance evaporator outlet refrigerant flow and oil return flow velocity.
Claims (1)
1. two expansion valve throttling device; It comprises fully independently evaporimeter of compressor, condenser, device for drying and filtering, visor, magnetic valve I, magnetic valve II, heating power expansion valve I, heating power expansion valve II and two chambeies; It is characterized in that compressor, condenser, device for drying and filtering and visor are connected successively; Divide two-way to connect magnetic valve I and magnetic valve II behind the visor; One import is connected successively with evaporimeter for magnetic valve I, heating power expansion valve I, and magnetic valve II, another import of heating power expansion valve II and evaporimeter are connected successively, and evaporator outlet connects compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205296583U CN202371944U (en) | 2011-12-18 | 2011-12-18 | Double-expansion valve throttling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205296583U CN202371944U (en) | 2011-12-18 | 2011-12-18 | Double-expansion valve throttling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371944U true CN202371944U (en) | 2012-08-08 |
Family
ID=46595642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205296583U Expired - Fee Related CN202371944U (en) | 2011-12-18 | 2011-12-18 | Double-expansion valve throttling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202371944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979572A (en) * | 2017-05-09 | 2017-07-25 | 合肥天鹅制冷科技有限公司 | Double-working-condition air conditioner |
| US9915451B2 (en) | 2013-02-19 | 2018-03-13 | Carrier Corporation | Level control in an evaporator |
-
2011
- 2011-12-18 CN CN2011205296583U patent/CN202371944U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9915451B2 (en) | 2013-02-19 | 2018-03-13 | Carrier Corporation | Level control in an evaporator |
| CN106979572A (en) * | 2017-05-09 | 2017-07-25 | 合肥天鹅制冷科技有限公司 | Double-working-condition air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20191218 |