CN201173189Y - Compressor liquid-spraying control device - Google Patents
Compressor liquid-spraying control device Download PDFInfo
- Publication number
- CN201173189Y CN201173189Y CNU2008200840663U CN200820084066U CN201173189Y CN 201173189 Y CN201173189 Y CN 201173189Y CN U2008200840663 U CNU2008200840663 U CN U2008200840663U CN 200820084066 U CN200820084066 U CN 200820084066U CN 201173189 Y CN201173189 Y CN 201173189Y
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- China
- Prior art keywords
- compressor
- current relay
- electrically connected
- solenoid valve
- hydrojet
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Abstract
The utility model discloses a hydrojet controlling device for a compressor, which comprises a magnet valve (1), a throttling component (2) and a current relay (6); the liquid inlet of the magnet valve (1) is communicated with a liquid pipeline (3) at the refrigerating cycle high pressure side, and the liquid outlet thereof is communicated with the liquid inlet of the throttling component (2); the liquid outlet of the throttling component (2) is communicated with a compressor return air side (5); the current input terminal of the current relay (6) is electrically connected with a compressor power line (7); the voltage input terminal of the current relay (6) is electrically connected with the phase line of a voltage source (4), and the voltage output terminal of the current relay (6) is electrically connected with the voltage input terminal of the magnet valve (1); the voltage output terminal of the magnet valve (1) is electrically connected with the zero line of the voltage source (4). The hydrojet controlling device has the advantages that the motor hydrojet can be accurately cooled in time, thereby the compressor motor can be more effectively protected.
Description
Technical field:
The utility model belongs to refrigeration and field of air conditioning, specifically is a kind of compressor hydrojet control gear that is used on the vapour compression refrigerator.
Background technique:
At present, in numerous refrigerator classifications, vapour compression refrigerator is in occupation of critical role, key equipment in the prior art vapour compression refrigerator mainly comprises compressor, condenser, modulating valve (or claiming expansion valve, throttle valve) and vaporizer four large equipments, thereby is to connect successively by pipeline to form a locking system between these equipment.In these equipment, compressor is the heart in the vapour compression refrigerator, the important task that it is being born compression and is transporting refrigeration agent, and it mainly is made up of motor and compression member, and described motor can drive the compression member compressed refrigerant.This compressor can be subjected to the influence of operating mode in real work, in other words, if it is (high especially as condensing temperature that compressor moves under bad working environments, when compression ratio is big), electric current by its motor will increase, thereby the temperature of motor is raise, and higher temperature can cause the quick aging of motor isolation layer, thereby reduce the working life of motor; Meanwhile, higher temperature also can influence the working efficiency of motor, and when compressor overstepped the extreme limit the operating mode operation, too high electric current just might cause motor to burn because of overtemperature.
In order to address the above problem, the method that present most of vapour compression refrigerator manufacturer adopts is to reduce the temperature rise of motor toward air compressor motor side hydrojet, thereby guarantees compressor specified working life.And in order to reach the purpose of coming cool motors by hydrojet, the structure of the compressor hydrojet control gear that prior art adopted is roughly as follows: it is provided with a temperature inductance probe at the compressor exhaust pipe place; Described temperature inductance probe is connected on the controller; Described controller is electrically connected with a solenoid valve; The liquid entering hole of described solenoid valve is communicated with refrigeration cycle high pressure side liquid line, and its liquid outlet is communicated with the liquid entering hole of throttle part; The liquid outlet of described throttle part is connected with the compressor return air side.The compressor hydrojet control gear of said structure is whether to control hydrojet according to the temperature of compressor exhaust pipe, the temperature that is outlet pipe can pass to controller by temperature inductance probe, when temperature surpasses predetermined value, controller will be communicated with power supply and give solenoid valve, solenoid valve is opened, thereby make the refrigeration agent in the liquid line of refrigeration cycle high pressure side enter into the compressor return air side, air compressor motor is carried out the hydrojet cooling, protect compressor with this by throttle part; When the temperature of compressor exhaust pipe dropped to predetermined value, controller will be cut off the electricity supply and be stopped to solenoid valve, thereby makes closed electromagnetic valve, stopped to compressor return air side hydrojet.Because the temperature of compressor exhaust pipe and the temperature of motor directly do not concern; it can only reflect the temperature of motor indirectly by outlet pipe; so adopt the compressor hydrojet control gear of this structure to have certain hysteresis quality in actual use; promptly under the situation of motor overtemperature and the temperature of outlet pipe does not also surpass predetermined value; thereby hydrojet is protected air compressor motor immediately, has brought certain error for the best opportunity of hydrojet.
The model utility content:
The technical problems to be solved in the utility model is, provide a kind of can be immediately, accurately to the cooling of motor hydrojet, thereby the compressor hydrojet control gear of more effective protection air compressor motor.
Technical solution of the present utility model is, a kind of compressor hydrojet control gear with following structure is provided, and it comprises solenoid valve, throttle part and current relay; The liquid entering hole of described solenoid valve is connected with refrigeration cycle high pressure side liquid line, and its liquid outlet is connected with the liquid entering hole of throttle part; The liquid outlet of described throttle part is connected with the compressor return air side; The current input terminal of described current relay is electrically connected with the compressor power line; The voltage input end of described current relay is electrically connected with the phase line of voltage source, and the voltage output end of described current relay is electrically connected with the voltage input end of solenoid valve; The voltage output end of described solenoid valve is electrically connected with the zero line of voltage source.
After adopting above structure, compared with prior art, the utlity model has following advantage: the heating value of air compressor motor is and square being directly proportional of electric current, the size of the electric current by motor can be instant, the size that reflects the electric motor overheating amount accurately, because the current relay in the utility model is the electric current of induced compression machine at any time, promptly when the electric current of compressor surpasses the setting value of current relay, current relay will be communicated with the power supply of solenoid valve and give solenoid valve, thereby solenoid valve is opened, make refrigerant liquid enter into the compressor return air side, air compressor motor is carried out the hydrojet cooling through throttle part; When compressor current drops to setting value; current relay will cut off the power supply of solenoid valve; make closed electromagnetic valve; thereby stop the air compressor motor hydrojet is cooled off; therefore; the utility model can be immediately, accurately to the cooling of motor hydrojet, thereby the compressor hydrojet control gear of more effective protection air compressor motor.
Description of drawings:
Accompanying drawing is the structural representation of the utility model compressor hydrojet control gear.
Shown in the figure, 1, solenoid valve, 2, throttle part, 3, refrigeration cycle high pressure side liquid line, 4, voltage source, 5, the compressor return air side, 6, current relay, 7, the compressor power line.
Specific embodiment:
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
As shown in drawings, the utility model compressor hydrojet control gear comprises solenoid valve 1, throttle part 2 and current relay 6; The liquid entering hole of described solenoid valve 1 is connected with refrigeration cycle high pressure side liquid line 3, and its liquid outlet is connected with the liquid entering hole of throttle part 2; The liquid outlet of described throttle part 2 is connected with compressor return air side 5; The current input terminal of described current relay 6 is electrically connected with compressor power line 7; The voltage input end of described current relay 6 is electrically connected with the phase line of voltage source 4, and the voltage output end of described current relay 6 is electrically connected with the voltage input end of solenoid valve 1; The voltage output end of described solenoid valve is electrically connected with the zero line of voltage source 4.In this specific embodiment, described throttle part 2 is adopted as throttle valve.Because current relay 6 is the relays that are switched on or switched off circuit according to the size of electric current in the coil, so the model of current relay 6 can suitably be selected according to the maximum temperature that air compressor motor can bear in the utility model.
Working principle of the present utility model is: when the electric current of compressor surpasses the setting value of current relay 6, current relay 6 will be communicated with the power supply of solenoid valve 1 and give solenoid valve 1 power supply, thereby solenoid valve 1 is opened, make refrigerant liquid enter into compressor return air side 5, air compressor motor is carried out the hydrojet cooling through throttle part 2; When compressor current dropped to setting value, current relay 6 will cut off the power supply of solenoid valve 1, and solenoid valve 1 cuts out, thereby stopped the air compressor motor hydrojet is cooled off.
Claims (2)
1, a kind of compressor hydrojet control gear, it comprises solenoid valve (1) and throttle part (2); The liquid entering hole of described solenoid valve (1) is connected with refrigeration cycle high pressure side liquid line (3), and its liquid outlet is connected with the liquid entering hole of throttle part (2); The liquid outlet of described throttle part (2) is connected with compressor return air side (5), it is characterized in that: it also comprises a current relay (6); The current input terminal of described current relay (6) is electrically connected with compressor power line (7); The voltage input end of described current relay (6) is electrically connected with the phase line of voltage source (4), and the voltage output end of described current relay (6) is electrically connected with the voltage input end of solenoid valve (1); The voltage output end of described solenoid valve (1) is electrically connected with the zero line of voltage source (4).
2, compressor hydrojet control gear according to claim 1 is characterized in that: described throttle part (2) is a throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200840663U CN201173189Y (en) | 2008-03-13 | 2008-03-13 | Compressor liquid-spraying control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200840663U CN201173189Y (en) | 2008-03-13 | 2008-03-13 | Compressor liquid-spraying control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201173189Y true CN201173189Y (en) | 2008-12-31 |
Family
ID=40200307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200840663U Expired - Lifetime CN201173189Y (en) | 2008-03-13 | 2008-03-13 | Compressor liquid-spraying control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201173189Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671050A (en) * | 2012-09-21 | 2014-03-26 | 珠海格力电器股份有限公司 | Spray control method and device for compressor and air conditioning system |
| CN106595126A (en) * | 2016-12-16 | 2017-04-26 | 广东美的暖通设备有限公司 | Outdoor unit control system, heat pump unit and control method thereof |
-
2008
- 2008-03-13 CN CNU2008200840663U patent/CN201173189Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671050A (en) * | 2012-09-21 | 2014-03-26 | 珠海格力电器股份有限公司 | Spray control method and device for compressor and air conditioning system |
| CN106595126A (en) * | 2016-12-16 | 2017-04-26 | 广东美的暖通设备有限公司 | Outdoor unit control system, heat pump unit and control method thereof |
| CN106595126B (en) * | 2016-12-16 | 2019-12-20 | 广东美的暖通设备有限公司 | Outer unit control system, heat pump unit and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo AUX Electric Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081231 |