CN201983527U - Oil return device of partial heat recovery air cooling unit - Google Patents
Oil return device of partial heat recovery air cooling unit Download PDFInfo
- Publication number
- CN201983527U CN201983527U CN2010206148495U CN201020614849U CN201983527U CN 201983527 U CN201983527 U CN 201983527U CN 2010206148495 U CN2010206148495 U CN 2010206148495U CN 201020614849 U CN201020614849 U CN 201020614849U CN 201983527 U CN201983527 U CN 201983527U
- Authority
- CN
- China
- Prior art keywords
- oil return
- heat regenerator
- refrigerant
- oil
- return line
- 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 - Lifetime
Links
- 238000011084 recovery Methods 0.000 title abstract 3
- 238000001816 cooling Methods 0.000 title abstract 2
- 239000003507 refrigerant Substances 0.000 claims abstract description 24
- 239000011521 glass Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 abstract description 26
- 239000010687 lubricating oil Substances 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
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Abstract
The utility model discloses an oil return device of a partial heat recovery air cooling unit, which comprises a heat recoverer and a low-pressure pipe connected between a compressor and an evaporator, wherein the heat recoverer is a horizontal shell and tube condenser, and a shell and tube of the heat recoverer is provided with a refrigerant inlet and a refrigerant outlet; the refrigerant outlet is communicated with the refrigerant outlet, and the low-pressure pipe is communicated with the first end of the oil return pipeline. Because the pressure difference between the first end and the second end of the oil return pipeline is large, the flow velocity of the refrigerant in the oil return pipeline is high, the lubricating oil can be smoothly taken away, the oil accumulation at the bottom of the heat recovery device is avoided, and the reliability of the unit is ensured. Compared with the prior art, the utility model has the advantages of very simple structure, with low costs, effectual.
Description
Technical field
The utility model relates to a kind of portion of hot and reclaims air-cooled unit, and especially a kind of portion of hot reclaims the oil return apparatus of air-cooled unit.
Background technology
At present, the heat regenerator that portion of hot reclaims air-cooled unit adopts the horizontal shell and tube condenser, and exhaust by the portion of hot recover, enters fin earlier again, and the heat regenerator position is lower than fin.When water temperature was higher, heat regenerator heat exchange amount was little, the refrigerant mass dryness fraction height of heat regenerator outlet, and the flow velocity height, lubricating oil can be taken away smoothly; When water temperature was very low, heat regenerator heat exchange effect was very good, and the refrigerant of outlet substantially all is a liquid, and lubricating oil can be dissolved in the refrigerant, and takes away smoothly; But, when water temperature between wherein, when the heat regenerator heat exchange was better, heat regenerator outlet refrigerant was a gas-liquid two-phase, oil return this moment difficulty.As everyone knows, oil return is extremely important for the compressor effect, if the oil starvation compressor can't turn round.In order to solve the problem of oil return difficulty, some condenser has the oil return design in the market, is partly oil eliminator to be built in condenser but their oil return designs actual, so complex structure, the cost height.
Summary of the invention
The purpose of this utility model is, a kind of heat regenerator of simple in structure, the air-cooled unit of recuperation of heat that cost is low is provided.
A kind of portion of hot of the present utility model reclaims the oil return apparatus of air-cooled unit, comprise heat regenerator and be connected compressor and evaporimeter between low-voltage tube, described heat regenerator is the horizontal shell and tube condenser, is provided with refrigerant import and refrigerant exit on the package of this heat regenerator; Also comprise return line, first end of this return line is communicated with described refrigerant exit, and second end is communicated with described low-voltage tube.
Because first end and the pressure reduction between second end of return line are big, therefore, the flow velocity height of refrigerant in the return line, lubricating oil can be taken away smoothly, has avoided the long-pending oil in heat regenerator bottom, has guaranteed the reliability of unit.
Preferably, in described return line, be serially connected with filter, enter low-pressure side and suck compressor to prevent the impurity in the heat regenerator.
Preferably, in described return line, be serially connected with stop valve,, and can regulate aperture return line with convenient for maintaining and maintenance.
Preferably, in described return line, be serially connected with liquid-sighting glass, with the convenient oil return situation of observing.
Preferably, described refrigerant exit is located at the bottom of described package.Because lubricating oil generally amasss in the package bottom, oil return pipe is drawn the reliability that has guaranteed oil return from the bottom of heat regenerator.
Compared with prior art, the utility model has the advantages that:
(1) structure of oil return apparatus of the present utility model is very simple, need not to change the package structure, and the cost of increase is minimum.
(2) oil return apparatus of the present utility model can guarantee that heat regenerator heat exchange amount influences the reliability of unit greatly and not, and the evenly heat yield reaches 30%.
(3) oil return apparatus of the present utility model can guarantee that the oil return pipe loss of refrigeration capacity is very little, to the ability and the efficiency influence reduction of unit.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the stereogram that portion of hot reclaims air-cooled unit.
Description of reference numerals:
1-heat regenerator, the import of 1a-refrigerant, 2-heat regenerator go out pipe, 3-low-voltage tube, 4-return line, 5-filter, 6-stop valve, 7-liquid-sighting glass, 8-fixed support, 10-evaporimeter, 11-condenser.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated:
One of them embodiment of the present utility model as shown in Figure 1, the oil return apparatus that portion of hot reclaims air-cooled unit comprise heat regenerator 1 and be connected compressor and evaporimeter 10 between low-voltage tube 3, wherein heat regenerator 1 is the horizontal shell and tube condenser, is provided with refrigerant import 1a and refrigerant exit on the package of this heat regenerator 1.Preferably, refrigerant exit is located at the bottommost of package, and this refrigerant exit is communicated with the lower end that heat regenerator goes out pipe 2.First end of return line 4 is connected the lower end that heat regenerator goes out pipe 2, and the other end is connected on the low-voltage tube 3 between evaporimeter 10 and the compressor.Because first end and the pressure reduction between second end of return line 4 are big, therefore, the refrigerant flow rate height in the return line 4, lubricating oil can be taken away smoothly, has avoided the long-pending oil in heat regenerator 1 bottom, has guaranteed the reliability of unit.Preferably, be serially connected with filter 5, stop valve 6 and liquid-sighting glass 7 in return line 4, filter 5 is used for preventing that the impurity of heat regenerator 1 from entering low-voltage tube 3 and sucking compressor; The effect of stop valve 6 is convenient for maintaining and maintenance, and can regulate the aperture of return line 4; Liquid-sighting glass 7 can conveniently be observed the oil return situation.Filter 5 is connected with the chassis through fixed support 8 with stop valve 6.
As can be seen from Figure 2, heat regenerator 1 and evaporimeter 10 are installed in the bottom that portion of hot reclaims air-cooled unit abreast, and its position is lower than fin condenser 11.
Only be specific embodiment of the utility model below, do not limit protection domain of the present utility model with this; Any replacement and the improvement done on the basis of not violating the utility model design all belong to protection domain of the present utility model.
Claims (5)
1. a portion of hot reclaims the oil return apparatus of air-cooled unit, comprise heat regenerator and be connected compressor and evaporimeter between low-voltage tube, described heat regenerator is the horizontal shell and tube condenser, is provided with refrigerant import and refrigerant exit on the package of this heat regenerator; It is characterized in that: also comprise return line, first end of this return line is communicated with described refrigerant exit, and second end is communicated with described low-voltage tube.
2. portion of hot according to claim 1 reclaims the oil return apparatus of air-cooled unit, it is characterized in that: be serially connected with filter in described return line.
3. portion of hot according to claim 1 reclaims the oil return apparatus of air-cooled unit, it is characterized in that: be serially connected with stop valve in described return line.
4. portion of hot according to claim 1 reclaims the oil return apparatus of air-cooled unit, it is characterized in that: be serially connected with liquid-sighting glass in described return line.
5. reclaim the oil return apparatus of air-cooled unit according to the arbitrary described portion of hot of claim 1 to 4, it is characterized in that: described refrigerant exit is located at the bottom of described package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206148495U CN201983527U (en) | 2010-11-18 | 2010-11-18 | Oil return device of partial heat recovery air cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206148495U CN201983527U (en) | 2010-11-18 | 2010-11-18 | Oil return device of partial heat recovery air cooling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201983527U true CN201983527U (en) | 2011-09-21 |
Family
ID=44610986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206148495U Expired - Lifetime CN201983527U (en) | 2010-11-18 | 2010-11-18 | Oil return device of partial heat recovery air cooling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201983527U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401512A (en) * | 2011-11-18 | 2012-04-04 | 广东美的电器股份有限公司 | Parallel flow heat exchanger |
| CN103486773A (en) * | 2013-08-30 | 2014-01-01 | 青岛海信日立空调系统有限公司 | Oil return control system based on shell-and-tube heat exchanger |
| CN108036554A (en) * | 2018-01-05 | 2018-05-15 | 珠海格力电器股份有限公司 | Air conditioner circulation system, air conditioner and air conditioner control method |
-
2010
- 2010-11-18 CN CN2010206148495U patent/CN201983527U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401512A (en) * | 2011-11-18 | 2012-04-04 | 广东美的电器股份有限公司 | Parallel flow heat exchanger |
| CN102401512B (en) * | 2011-11-18 | 2016-05-11 | 美的集团股份有限公司 | Parallel-flow heat exchanger |
| CN103486773A (en) * | 2013-08-30 | 2014-01-01 | 青岛海信日立空调系统有限公司 | Oil return control system based on shell-and-tube heat exchanger |
| CN103486773B (en) * | 2013-08-30 | 2015-09-09 | 青岛海信日立空调系统有限公司 | Based on the oil return control system of shell-and-tube heat exchanger |
| CN108036554A (en) * | 2018-01-05 | 2018-05-15 | 珠海格力电器股份有限公司 | Air conditioner circulation system, air conditioner and air conditioner control method |
| WO2019134492A1 (en) * | 2018-01-05 | 2019-07-11 | 珠海格力电器股份有限公司 | Circulation system for air conditioner, air conditioner, and air conditioner control method |
| US11543162B2 (en) | 2018-01-05 | 2023-01-03 | Gree Electric Appliances, Inc. Of Zhuhai | Circulation system of air conditioner, air conditioner, and air conditioner control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |
|
| CX01 | Expiry of patent term |