CN202885370U - Air-conditioning system - Google Patents
Air-conditioning system Download PDFInfo
- Publication number
- CN202885370U CN202885370U CN 201220385028 CN201220385028U CN202885370U CN 202885370 U CN202885370 U CN 202885370U CN 201220385028 CN201220385028 CN 201220385028 CN 201220385028 U CN201220385028 U CN 201220385028U CN 202885370 U CN202885370 U CN 202885370U
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- Prior art keywords
- air
- compressor
- conditioning system
- reversing arrangement
- return
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Abstract
The utility model discloses an air-conditioning system. The air-conditioning system comprises a compressor, a throttling component and a condenser. The compressor, the throttling component and the condenser are connected in sequence through a refrigerant pipeline. The compressor is provided with a low-pressure sensor which is used for detecting the pressure of an air return pipeline of the compressor. The air exhausting side of the compressor and the liquid output side are connected to the air return pipeline of the compressor through a first reversing device, and an outlet pipe which is arranged on one side of the first reversing device is provided with a first magnetic valve. The air-conditioning system is capable of avoiding damage caused by overheating to the compressor and improving stability and reliability of the system.
Description
Technical field
The utility model relates to air-conditioning technical field, particularly a kind of higher air-conditioning system of infringement, system energy efficiency of avoiding Wet Compression and lubricating oil dilution that compressor is caused.
Background technology
Multi-online air-conditioning system has higher coefficient of performance of refrigerating, is fit to various varying duties place, therefore is widely used in Refrigeration Engineering.At present in the Practical Project, the piping length of multi-joint outer machine system requires more and more longer, and the coolant injection amount is also more and more, and the discharge capacity of compressor is also increasing, therefore the protection of compressor is seemed more and more important.In the prior art, common way is to control the aperture of the electric expansion valve of outer machine by the target degree of superheat in the industry, thereby reaches the purpose that prevents Wet Compression.The method is more coarse to the control ratio of the degree of superheat, and can only be for the lower situation of the return-air degree of superheat, and the excessive situation of the return-air degree of superheat that causes for the gaps and omissions refrigerant solves not ideal enoughly, causes the easy overheated damage of compressor.
Summary of the invention
Main purpose of the present utility model is to provide a kind of air-conditioning system, is intended to effectively solve present air-conditioning system for the excessive flimsy technical problem of compressor displacement that causes of the return-air degree of superheat.
In order to realize the utility model purpose, the utility model provides a kind of air-conditioning system, comprise the compressor, throttle part and the condenser that connect successively by refrigerant pipe, described compressor is provided with to detect the low pressure sensor of its return-air duct pressure, the exhaust side of described compressor and the tapping side of throttle part are connected to the return-air duct of compressor by the first reversing arrangement, and a side outlet pipe of described the first reversing arrangement is provided with the first magnetic valve.
Preferably, be provided with the second reversing arrangement between described condenser and the compressor, this second reversing arrangement connects by the second magnetic valve.
Preferably, described reversing arrangement is cross valve.
Preferably, described low pressure sensor is arranged on the air entry place of described compressor.
The utility model is by arranging above-mentioned low pressure sensor, the first reversing arrangement and the first magnetic valve, when system's detection return-air degree of superheat is too high, the first reversing arrangement powers on, open the first magnetic valve, the low-temp low-pressure refrigerant of a part after the throttle part throttling directly imports on the muffler by the first magnetic valve, and overheated return-air is carried out Liquid injection cooling, thereby reduces the return-air degree of superheat, avoid overheated compressor is caused damage, improve the stability of a system and reliability.
Description of drawings
Fig. 1 is the structural representation of air-conditioning system in the utility model one preferred embodiment.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
The specific embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model provides a kind of air-conditioning system, with reference to shown in Figure 1, this air-conditioning system comprises compressor 1, throttle part 5 and the condenser 4 that connects successively by refrigerant pipe, described compressor 1 is provided with to detect the low pressure sensor 10 of its return-air duct pressure, the tapping side of the exhaust side of described compressor 1 and throttle part 5 is connected to the return-air duct of compressor 1 by the first reversing arrangement 6, and a side outlet pipe of described the first reversing arrangement 6 is provided with the first magnetic valve 8.Except above-mentioned parts, the utility model air-conditioning system also comprises oil eliminator 2 and low-pressure liquid storing tank 7, and position and the annexation of both and compressor 1 and other parts can be with reference to shown in Figure 1.
Among the utility model embodiment, when system's detection return-air degree of superheat is too high, the first reversing arrangement 6 powers on, open the first magnetic valve 8, the low-temp low-pressure refrigerant of a part after throttle part 5 throttlings directly imports on the muffler by the first magnetic valve 8, and overheated return-air is carried out Liquid injection cooling, thereby reduces the return-air degree of superheat, avoid overheated compressor 1 is caused damage, improve the stability of a system and reliability.
With reference to shown in Figure 1, in a preferred embodiment of the present utility model, between condenser 4 and compressor 1, also be provided with the second reversing arrangement 3, this second reversing arrangement 3 connects by the second magnetic valve 9.Among the utility model embodiment, the first reversing arrangement 6 and the second reversing arrangement 3 are preferably cross valve.Low pressure sensor 10 is arranged on the air entry place of described compressor 1.Owing to be provided with the second reversing arrangement 3 and the second magnetic valve 9, when detecting the return-air degree of supercooling, system crosses when low, 6 power down of the first reversing arrangement, open simultaneously the first magnetic valve 8, directly import on the muffler by the first magnetic valve 8 through the second reversing arrangement 3 high temperature and high pressure gas out, return-air is carried out jet preheating, thereby improve the return-air degree of superheat, the infringement of avoiding Wet Compression and lubricating oil dilution that compressor is caused improves system energy efficiency simultaneously.In addition, when the utility model air-conditioning system is in defrost state, the first reversing arrangement 6 and the 8 simultaneously power down of the first magnetic valve, the second magnetic valve 9 is opened, and system has the function of quickly defrosting.
It below only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (4)
1. air-conditioning system, it is characterized in that, comprise the compressor, throttle part and the condenser that connect successively by refrigerant pipe, described compressor is provided with to detect the low pressure sensor of its return-air duct pressure, the exhaust side of described compressor and the tapping side of throttle part are connected to the return-air duct of compressor by the first reversing arrangement, and a side outlet pipe of described the first reversing arrangement is provided with the first magnetic valve.
2. air-conditioning system as claimed in claim 1 is characterized in that, is provided with the second reversing arrangement between described condenser and the compressor, and this second reversing arrangement connects by the second magnetic valve.
3. air-conditioning system as claimed in claim 2 is characterized in that, described the first reversing arrangement and the second reversing arrangement are cross valve.
4. air-conditioning system as claimed in claim 3 is characterized in that, described low pressure sensor is arranged on the air entry place of described compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385028 CN202885370U (en) | 2012-08-03 | 2012-08-03 | Air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385028 CN202885370U (en) | 2012-08-03 | 2012-08-03 | Air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202885370U true CN202885370U (en) | 2013-04-17 |
Family
ID=48076792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220385028 Expired - Lifetime CN202885370U (en) | 2012-08-03 | 2012-08-03 | Air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202885370U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020950A (en) * | 2015-07-15 | 2015-11-04 | 宁波奥克斯电气有限公司 | Defrosting control method of multi-connected air conditioner unit |
| CN107940796A (en) * | 2017-12-11 | 2018-04-20 | 广东美的暖通设备有限公司 | The startup control method of multi-line system and its outdoor unit |
-
2012
- 2012-08-03 CN CN 201220385028 patent/CN202885370U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020950A (en) * | 2015-07-15 | 2015-11-04 | 宁波奥克斯电气有限公司 | Defrosting control method of multi-connected air conditioner unit |
| CN105020950B (en) * | 2015-07-15 | 2017-09-05 | 宁波奥克斯电气股份有限公司 | Multi-connected machine defrosting control method |
| CN107940796A (en) * | 2017-12-11 | 2018-04-20 | 广东美的暖通设备有限公司 | The startup control method of multi-line system and its outdoor unit |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |