CN201241833Y - Air conditioner compressor protection system and air conditioner having the same - Google Patents
Air conditioner compressor protection system and air conditioner having the same Download PDFInfo
- Publication number
- CN201241833Y CN201241833Y CNU2008201249562U CN200820124956U CN201241833Y CN 201241833 Y CN201241833 Y CN 201241833Y CN U2008201249562 U CNU2008201249562 U CN U2008201249562U CN 200820124956 U CN200820124956 U CN 200820124956U CN 201241833 Y CN201241833 Y CN 201241833Y
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Abstract
The utility model provides an air conditioner compressor protecting system and an air conditioner adopting the system. The air conditioner compressor protecting system comprises a gas liquid ratio checker, an alarm device and a compressor control circuit, wherein the output of the gas liquid ratio checker is respectively connected with the inputs of the compressor control circuit and the alarm device. The gas liquid ratio checker checks the ratio of gas and liquid in a low pressure pipe, and when the liquid ratio is higher than a preset value, the compressor control circuit stops compressor, thereby avoiding feeding much liquid into the compressor to prevent the compressor from liquid impact and protect the compressor, at the same time, the alarm device starts and alarms to inform users about the overfeed liquid condition of the compressor.
Description
Technical field
The air-conditioning that the utility model relates to a kind of air condition compressor protective system and has this system.
Background technique
Air condition compressor is the heart as whole air-conditioning refrigeration system, it is from the refrigerant gas of low pressure line suction by the low-temp low-pressure of evaporator evaporation, after driving piston refrigerant gas is compressed by motor rotation, discharge the refrigerant gas of High Temperature High Pressure to outlet pipe, for refrigeration cycle provides power, thus the refrigeration cycle of realization compression → condensation → expansion → evaporation (heat absorption).
Yet, because evaporimeter frosting is serious or poor heat transfer during fan failure, unevaporated refrigerant liquid cognition enters compressor by low pressure line, perhaps owing to other reason,, degree of superheat setting too little, expansion valve malfunctioning etc. excessive such as the expansion valve type selecting all may finally make refrigerant liquid enter compressor.When a large amount of refrigerant liquids suck compresser cylinder with refrigerant vapour, because the impact of liquid and incompressible, can damage suction valve chip, and do not discharge rapidly after entering cylinder in exhaust process, be compressed during near top dead center and the high hydraulic pressure of moment that produces at piston, this phenomenon is commonly called " liquid hammer ".Liquid hammer can cause the damage of compression stressed member in very short time, thereby compressor is caused fatal damage.Even without causing liquid hammer, liquid refrigerant enters cylinder can dilute lubricating oil cause wearing and tearing, and the load of motor and electric current can increase greatly during wearing and tearing, will cause electrical fault in the course of time.
In the prior art, use gas-liquid separator to solve this problem usually.Refrigerant vapour in low pressure line enters before the compressor, earlier by gas-liquid separator with the liquor separation compressor that comes out to enter again.If but the gas-liquid separator frosting, and frost is insoluble always, and all frostings of low pressure line part, and that just means that system refrigerant is too much, and Shi refrigerant vapour has entered compressor excessively, is easy to cause the liquid hammer of compressor.Perhaps under the situation that gas-liquid separator lost efficacy, may occur still that big quantity of fluid enters compressor and the phenomenon that causes liquid hammer, thereby compressor is caused damage.
The model utility content
In order to prevent that big quantity of fluid enters compressor in the air-conditioning low pressure line; compressor is caused damage; the air-conditioning that the utility model proposes a kind of air condition compressor protective system and have this system; by detecting the content liquid in the air-conditioning low pressure line; prevent that too much liquid refrigerant from entering compressor, thereby realize protection compressor.
The utility model provides a kind of air condition compressor protective system; this air condition compressor protective system comprises gas-liquid proportion of composing detection device, warning device and compressor Control Cprant, and the output terminal of gas-liquid proportion of composing detection device connects the input end of compressor Control Cprant and warning device respectively.
Correspondingly; the utility model also provides a kind of air-conditioning; this air-conditioning comprises vaporizer, low pressure line, compressor, pressure duct, condenser, the expansion valve of airtight connection successively; this air-conditioning also comprises above-mentioned air condition compressor protective system; gas-liquid proportion of composing detection device in the described air condition compressor protective system is arranged in the suction port place of low pressure line near compressor, and described compressor Control Cprant connects compressor.
Air condition compressor protective system of the present utility model; wherein; gas-liquid proportion of composing detection device detects the ratio of gas in the low pressure line and liquid; when liquid fraction the time greater than predetermined value; compressor Control Cprant control compressor quits work it, prevents that big quantity of fluid from entering the liquid hammer that compressor causes compressor, realized the protection to compressor; alarm activation gives the alarm simultaneously, and the liquid of notifying the user to enter compressor is too much.
Description of drawings
Fig. 1 is the structural representation of air condition compressor protective system of the present utility model;
Fig. 2 is the control flow chart of air condition compressor protective system of the present utility model;
Fig. 3 is the structural representation with air-conditioning of air condition compressor protective system of the present utility model;
Fig. 4 is the structural scheme of mechanism according to the car air conditioner that has the air condition compressor protective system of a preferred embodiment of the present invention.
Embodiment
With reference now to accompanying drawing, preferred implementation is described in detail.
As shown in Figure 1; the utility model provides a kind of air condition compressor protective system; this air condition compressor protective system 10 comprises gas-liquid proportion of composing detection device 1, warning device 2 and compressor Control Cprant, and the output terminal of gas-liquid proportion of composing detection device 1 connects the input end of compressor Control Cprant and warning device 2 respectively.
The gas and the liquid ratio of the refrigeration agent in 1 pair of low pressure line of described gas-liquid proportion of composing detection device detect, when the gas-liquid ratio that detects less than predetermined value time the (promptly the ratio of gas of Jian Ceing and liquid is less than predetermined gas and the ratio of liquid) output represents that low pressure line enters the excessive testing signal of refrigerant liquid body burden of compressor 4, and when the gas-liquid ratio that detects more than or equal to predetermined value the time, the testing signal of the normal range (NR) that the content liquid in the output expression low pressure line can receive at compressor 4.It is that disclosed gas-liquid proportion of composing detects control switch in the patent of CN2682414Y that described gas-liquid proportion of composing detection device 1 can adopt the Chinese patent publication number, using this gas-liquid proportion of composing to detect control switch can be by regulating the proportion of composing predetermined value of gas-liquid mixture, automatically detect the transformation of scale of gas-liquid, and make whether the silicon controlled conducting represents whether the gas-liquid ratio that detects reaches predetermined value.The predetermined value of described gas-liquid ratio is preferably mass ratio more than or equal to 19:1, and promptly the content liquid of predetermined value is smaller or equal to 0.05 quality %.
Described compressor Control Cprant receives the testing signal of described gas-liquid proportion of composing detection device 1, represent low pressure line when testing signal and enter the refrigerant liquid body burden of compressor 4 when excessive, this compressor Control Cprant outputs a control signal to compressor 4 quits work it; And represent the normal range (NR) that the content liquid in the low pressure line can receive at compressor 4 when testing signal, and compressor Control Cprant outputs a control signal to compressor 4 and makes its proper functioning at this moment, and the refrigerant vapour after the detection will enter compressor 4 and compress.Preferably, when compressor is the eddy type air condition compressor, as the Nanjing special production model difficult to understand 120ml compressor that is WXH-086-F30, described compressor Control Cprant can adopt the magnetic clutch at compressor transmission shaft place, the magnetic clutch of described gas-liquid proportion of composing detection device 1 control compressor 4 is opened and adhesive, thereby control compressor 4 is worked and stopped.The specific implementation of described compressor Control Cprant is conventionally known to one of skill in the art, will not describe in detail in this.
Described warning device 2 receives the testing signal of described gas-liquid proportion of composing detection device 1, and represents low pressure line when testing signal and enter the refrigerant liquid body burden of compressor 4 when excessive, reports to the police.
Described warning device 2 can be in audible alarm unit, display screen and the light alarming device one or more, thereby too much by the liquid that sound, image or literal show and modes such as light flash notify the user to enter compressor 4.
Fig. 2 is the control flow chart of air condition compressor protective system 10 of the present utility model; as shown in Figure 2; in the air condition compressor protective system 10 of the present utility model; the gas and the liquid ratio of the refrigeration agent in 1 pair of low pressure line of described gas-liquid proportion of composing detection device detect; when the gas-liquid ratio that the detects time less than predetermined value; it is excessive that the expression low pressure line enters the refrigerant liquid body burden of compressor 4; this moment, compressor Control Cprant quit work compressor 4 to compressor 4 output control signals; warning device 2 startups simultaneously give the alarm, and the liquid of notifying the user to enter compressor 4 is too much.When the gas-liquid ratio that the detects time more than or equal to predetermined value, the normal range (NR) that content liquid in the expression low pressure line can receive at compressor 4,4 normal runnings of compressor Control Cprant control this moment compressor, refrigerant vapour after the detection will enter compressor 4 and compress, and warning device 2 does not start.
As shown in Figure 3; the utility model also provides a kind of air-conditioning; this air-conditioning comprises first vaporizer 5, compressor 4, condenser 7 and first expansion valve 8 by pipeline airtight connection successively; this air-conditioning also comprises above-mentioned air condition compressor protective system 10; gas-liquid proportion of composing detection device 1 in the described air condition compressor protective system 10 is arranged between vaporizer 5 and compressor 4, and the compressor Control Cprant 3 in the described air condition compressor protective system 10 connects compressor 4.
Described air-conditioning can also be provided with gas-liquid separator 6 between first vaporizer 5 and compressor 4; described air condition compressor protective system 10 is arranged between gas-liquid separator 6 and the compressor 4; wherein said gas-liquid separator 6 is isolated the refrigeration agent of liquid earlier, and then is carried out the detection of gas-liquid ratio and according to the value that detects compressor 4 is controlled by air condition compressor protective system 10.
The utility model is not particularly limited other devices of this air-conditioning, and conventional device all can be used.
The concrete working condition of using the air-conditioning that the utility model provides is described below.
The liquid refrigerating of low-temp low-pressure enters first vaporizer 5 through injection; first vaporizer 5 is the steam of low-temp low-pressure with liquid refrigerant evaporates; the steam of described low-temp low-pressure enters the low pressure line of air-conditioning; by the gas-liquid separator in the low pressure line 6 liquor separation is gone out, the refrigerant vapour of the low pressure line after the separation is detected by the gas-liquid proportion of composing detection device in the described air condition compressor protective system 10 1.When the gas-liquid ratio that the detects time less than predetermined value; the refrigerant liquid body burden of expression low pressure line is excessive; 3 pairs of compressors of compressor Control Cprant, the 4 output control signals of air condition compressor protective system 10 quit work compressor 4 at this moment, and warning device 2 startups simultaneously give the alarm.When the gas-liquid ratio that the detects time, the normal range (NR) that the content liquid in the expression low pressure line can receive at compressor 4 greater than predetermined value, compressor Control Cprant 3 control compressors 4 normal runnings this moment, warning device 2 does not start.Refrigerant vapour after the detection will enter compressor 4 and compress, the refrigerant vapour that is compressed to High Temperature High Pressure enters condenser 7 by high temperature conduit, in getting, condenser 7 is condensed into the refrigerant liquid of cryogenic high pressure, the refrigerant liquid of described cryogenic high pressure enters first expansion valve 8, by first expansion valve 8 refrigeration agent of described cryogenic high pressure is become the refrigerant liquid of low-temp low-pressure, then the refrigerant liquid of low-temp low-pressure enters first vaporizer 5 again.The cycle heat exchange that described refrigeration agent just goes round and begins again in airtight air-conditioning system inside reaches refrigeration.
The air-conditioning that the utility model provides can also be car air conditioner.As shown in Figure 4, this air-conditioning of described car air conditioner also comprises second expansion valve 82 and second vaporizer 52 that is connected in turn between condenser 7 and the compressor 4, described first vaporizer 51 and first expansion valve 81 constitute the first air-conditioning branch road, second vaporizer 52 and second expansion valve 82 constitute the second air-conditioning branch road, the first air-conditioning branch road and the second air-conditioning branch road parallel connection.Preferably, in the first air-conditioning branch road and/or the second air-conditioning branch road solenoid valve 9 is installed.By opening and closing solenoid valve 9, can realize the first air-conditioning branch road and/or the second air-conditioning branch road refrigerant circulation line unlatching and end.Make under the situation of only using the first air-conditioning branch road or the second air-conditioning branch road, can correspondingly stop the refrigerant cycle in the second air-conditioning branch road or the first air-conditioning branch road, can reduce the refrigerant gas that enters compressor 4 like this, alleviate the burden of compressor 4.Thereby and the air condition compressor protective system 10 that the utility model provides together, plays the effect of better protection compressor 4.Wherein, this first air-conditioning branch road and the second air-conditioning branch road can be respectively the preceding air-conditioning branch road and the back air-conditioning branch road of car air conditioner.
By top description as seen; compressor protection system according to mode of execution of the present utility model; gas-liquid ratio in the refrigeration agent that enters compressor 4 is detected; when liquid fraction the time greater than predetermined value; control compressor 4 quits work it; and send alarm signal, thereby prevent that big quantity of fluid from entering the liquid hammer that compressor 4 causes compressor 4, realized the protection to compressor 4 by the warning device 2 of this compressor protection system.
Claims (6)
1, a kind of air condition compressor protective system (10); it is characterized in that; described air condition compressor protective system (10) comprises gas-liquid proportion of composing detection device (1), warning device (2) and compressor Control Cprant (3), and the output terminal of described gas-liquid proportion of composing detection device (1) connects the input end of described compressor Control Cprant (3) and described warning device (2) respectively.
2, air condition compressor protective system according to claim 1 (10) is characterized in that, described warning device (2) is one or more in audible alarm unit, display screen and the light alarming device.
3, a kind of air-conditioning; this air-conditioning comprises first vaporizer (5), compressor (4), condenser (7), first expansion valve (8) by pipeline airtight connection successively; it is characterized in that; described air-conditioning also comprises claim 1 or 2 described air condition compressor protective systems (10); gas-liquid proportion of composing detection device (1) in the described air condition compressor protective system (10) is arranged between vaporizer (5) and the compressor (4), and the compressor Control Cprant (3) in the described air condition compressor protective system (10) connects compressor (4).
4, air-conditioning according to claim 3, it is characterized in that, described air-conditioning is a car air conditioner, this air-conditioning also comprises second expansion valve (82) and second vaporizer (52) that is connected in turn between condenser (7) and the compressor (4), described first expansion valve (8) and first vaporizer (5) constitute the first air-conditioning branch road, second expansion valve (82) and second vaporizer (52) constitute the second air-conditioning branch road, the described first air-conditioning branch road and the second air-conditioning branch road parallel connection are equipped with solenoid valve (9) in wherein said first air-conditioning branch road and/or the described second air-conditioning branch road.
5, air-conditioning according to claim 3; it is characterized in that; described air-conditioning also comprises gas-liquid separator (6); this gas-liquid separator (6) is arranged between vaporizer (5) and the compressor (4), and the gas-liquid proportion of composing detection device (1) in the described air condition compressor protective system (10) is arranged between gas-liquid separator (6) and the compressor (4).
6, air-conditioning according to claim 5, it is characterized in that, described air-conditioning is a car air conditioner, this air-conditioning also comprises second expansion valve (82) and second vaporizer (52) that is connected in turn between condenser (7) and the gas-liquid separator (6), described first expansion valve (8) and first vaporizer (5) constitute the first air-conditioning branch road, second expansion valve (82) and second vaporizer (52) constitute the second air-conditioning branch road, the described first air-conditioning branch road and the second air-conditioning branch road parallel connection are equipped with solenoid valve (9) in wherein said first air-conditioning branch road and/or the described second air-conditioning branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201249562U CN201241833Y (en) | 2008-07-29 | 2008-07-29 | Air conditioner compressor protection system and air conditioner having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201249562U CN201241833Y (en) | 2008-07-29 | 2008-07-29 | Air conditioner compressor protection system and air conditioner having the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241833Y true CN201241833Y (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201249562U Expired - Lifetime CN201241833Y (en) | 2008-07-29 | 2008-07-29 | Air conditioner compressor protection system and air conditioner having the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201241833Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220964A (en) * | 2011-05-17 | 2011-10-19 | 烟台同大制冷设备有限公司 | Control method for preventing liquid impact on refrigeration compressor |
| CN103398520A (en) * | 2013-07-12 | 2013-11-20 | 广东美的暖通设备有限公司 | Air conditioning system and method for detecting liquid level of air-liquid separator of air conditioning system |
| CN109562676A (en) * | 2016-06-30 | 2019-04-02 | 艾默生环境优化技术有限公司 | Reduce the starting control system and method for overflow starting situation |
| WO2022152035A1 (en) * | 2021-01-13 | 2022-07-21 | 约克（无锡）空调冷冻设备有限公司 | Measurement apparatus and refrigeration system comprising same |
-
2008
- 2008-07-29 CN CNU2008201249562U patent/CN201241833Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220964A (en) * | 2011-05-17 | 2011-10-19 | 烟台同大制冷设备有限公司 | Control method for preventing liquid impact on refrigeration compressor |
| CN103398520A (en) * | 2013-07-12 | 2013-11-20 | 广东美的暖通设备有限公司 | Air conditioning system and method for detecting liquid level of air-liquid separator of air conditioning system |
| CN103398520B (en) * | 2013-07-12 | 2016-04-06 | 广东美的暖通设备有限公司 | The liquid-level detecting method of air-conditioning system and gas-liquid separator thereof |
| CN109562676A (en) * | 2016-06-30 | 2019-04-02 | 艾默生环境优化技术有限公司 | Reduce the starting control system and method for overflow starting situation |
| WO2022152035A1 (en) * | 2021-01-13 | 2022-07-21 | 约克（无锡）空调冷冻设备有限公司 | Measurement apparatus and refrigeration system comprising same |
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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: 20090520 |
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| CX01 | Expiry of patent term |