CN202835893U - Discharge temperature adjustable refrigeration device - Google Patents
Discharge temperature adjustable refrigeration device Download PDFInfo
- Publication number
- CN202835893U CN202835893U CN201220486208.5U CN201220486208U CN202835893U CN 202835893 U CN202835893 U CN 202835893U CN 201220486208 U CN201220486208 U CN 201220486208U CN 202835893 U CN202835893 U CN 202835893U
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- compressor
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- evaporimeter
- tube connector
- delivery temperature
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Abstract
The utility model relates to a discharge temperature adjustable refrigeration device which comprises a compressor, a condenser, a refrigeration system expansion valve, an evaporator and a connection pipe, wherein the compressor, the condenser, the refrigeration system expansion valve and the evaporator are connected in sequence through refrigeration pipelines, and a low-pressure liquid pipeline between the refrigeration system expansion valve and the evaporator is connected with a low-pressure gas pipeline between the evaporator and the compressor. An electromagnetic valve is arranged on the connection pipe, and a temperature sensor on an exhaust pipe of the compressor controls turning-on and turning-off the of the electromagnetic valve. The discharge temperature adjustable refrigeration device is simple in structure, simple and convenient to operate, and capable of effectively controlling discharge temperature of the low-temperature refrigeration compressor, guarantees safe operation of a low-temperature refrigeration system, and also can effectively returns oil.
Description
Technical field
The utility model belongs to the refrigerating plant field, particularly the adjustable refrigerating plant of a kind of delivery temperature.
Background technology
At present, the application of various vapor compression refrigeration devices is more and more extensive, and its applying working condition also becomes increasingly complex.When large the or return-air degree of superheat is larger when compression ratio, such as cryogenic refrigeration fields such as Oil-gas Separation, the delivery temperature of compressor will significantly improve this moment, the working environment of compressor sharply worsens, controlled such as untimely taking measures, the compressor lubricant oil carbonization may occur, and compressor is because the serious consequence that insufficient lubrication burns out.
For effectively controlling the delivery temperature of refrigeration system compressor, prior art as shown in Figure 1, between the muffler of compressor and condensator outlet high-pressure liquid tube, a high temperature expansion valve 8 is set, its temperature-sensitive bag colligation is at exhaust outlet of compressor, when Exhaust temperature rise to 180 ℉ or 210 ℉, expansion valve is opened automatically, and refrigerant enters discharge chambe to electric motor temperature reduction from high-pressure liquid tube after the cooling of high temperature expansion valve reducing pressure by regulating flow, and then reduces delivery temperature.(publication No.: CN101738037A that the Chinese utility model patent application " prevents the protective device of discharge temperature of air conditioner compressor from being too "; date of publication: 2010.06.16) disclose a kind of protective device that prevents discharge temperature of air conditioner compressor from being too; at the muffler of the compressor that links to each other with fluid reservoir with refrigerant is flowed between the liquid pipe that links to each other with outdoor heat converter of indoor evaporator be provided with magnetic valve, when surpassing setting value according to the blast pipe of the compressor of the temperature sensor perception on the compressor, opens by magnetic valve.When system's coolant leakage, the delivery temperature of protection compressor can be not too high, avoids compressor because arranging too high damage of temperature.Aforesaid way is more applicable for air conditioning condition, but inapplicable for low temperature and deep cooling operating mode.Because low temperature and deep cooling operating mode evaporating pressure are usually very low, and high-pressure refrigerant pressure behind existing high temperature expansion valve reducing pressure by regulating flow is still higher, very large on the evaporating pressure impact, destroy awkward silence at a meeting, cause system normally not move.
Therefore, delivery temperature how effectively to control the cryogenic refrigerating system compressor is to be badly in need of the realistic problem that solves.
The utility model content
The refrigerating plant that provides a kind of delivery temperature adjustable is provided the purpose of this utility model, can effectively control the delivery temperature of cryogenic refrigeration compressor, guarantees the cryogenic refrigerating system safe operation.
The technical solution that realizes the utility model purpose is: the refrigerating plant that a kind of delivery temperature is adjustable, comprise the compressor that is connected successively by refrigeration piping, cold doubtful device, expansion valve of refrigeration system, evaporimeter, also be provided with a tube connector, expansion valve of refrigeration system is connected with the low-pressure gas pipeline of compressor chamber with evaporimeter with low pressure liquid pipeline between evaporimeter, be provided with a magnetic valve at this tube connector, the break-make of this magnetic valve is located at the temperature sensor system on the compressor exhaust pipe.
The low-pressure gas pipeline junction of tube connector and evaporimeter and compressor chamber, tube connector stretches in the low-pressure gas pipe, and extends 1～3 centimetre along airflow direction, preferably 2 centimetres.
Temperature sensor is located at position on the compressor exhaust pipe apart from 12～18 centimetres of exhaust outlet of compressor, preferably 15 centimetres.
The tie point of tube connector and low pressure liquid pipeline is located at the liquid storage district of evaporator or evaporimeter.
The utility model compared with prior art, its remarkable advantage:
1, owing to being partly to draw low-pressure, liquid refrigerant to motor and discharge chambe enforcement cooling from outlet or the evaporimeter liquid storage of expansion valve, therefore evaporating pressure is not impacted substantially, this point is even more important to cryogenic refrigeration;
2, simple in structure, cost is low, and is easy and simple to handle;
3, when getting the liquid point selection in evaporimeter rich oil district, also can double as and be oil return apparatus.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the controlled refrigeration system schematic diagram of prior art compressor exhaust temperature.
The refrigerating plant schematic diagram that Fig. 2 the utility model delivery temperature is adjustable.
Wherein: 1 compressor, 2 cold doubtful devices, 3 expansion valve of refrigeration systems, 4 evaporimeters, 5 tube connectors, 6 magnetic valves, 7 temperature sensors, 8 high temperature expansion valve.
The specific embodiment
As shown in Figure 2, the refrigerating plant that a kind of delivery temperature of the utility model is adjustable, comprise the compressor 1 that is connected successively by refrigeration piping, cold doubtful device 2, expansion valve of refrigeration system 3, evaporimeter 4, also be provided with a tube connector 5, the low pressure liquid pipeline of 4 in expansion valve of refrigeration system 3 and evaporimeter and the low-pressure gas pipeline of 1 on evaporimeter 4 and compressor are connected, be provided with a magnetic valve 6 at this tube connector 5, the break-make of this magnetic valve 6 is located at temperature sensor 7 controls on compressor 1 blast pipe.
Can establish various controllers between magnetic valve 6 and the temperature sensor 7, to guarantee magnetic valve 6 sensitivities, the timely switch of delivery temperature of surveying according to temperature sensor 7 reliably, effectively regulate delivery temperature in safe range.When temperature sensor 7 perception delivery temperatures reach or are higher than the capping value, opens solenoid valve 6.Because the adapter periphery in the access suction line can produce certain negative pressure because fluid high-speed flows through, the outlet of expansion valve or the evaporimeter liquid storage low-pressure, liquid refrigerant of partly drawing just is inhaled into the suction muffler of compressor like this, motor and discharge chambe are implemented cooling, thereby effectively reduce delivery temperature.When temperature sensor perception delivery temperature is down to desired value, shut electromagnetic valve.
Experimental results demonstrate, in the low-pressure gas pipeline junction of 1 on tube connector 5 and evaporimeter 4 and compressor, connecting leg 5 stretches in the low-pressure gas pipe, and it is better to extend 1～3 centimetre of effect along airflow direction, extends 2 centimetres of the bests.
The position that temperature sensor 7 is located on compressor 1 blast pipe is better apart from 12～18 centimetres of effects of compressor 1 exhaust outlet, apart from 15 centimetres of the bests of compressor 1 exhaust outlet.
Claims (7)
1. refrigerating plant that delivery temperature is adjustable, comprise the compressor (1), cold doubtful device (2), expansion valve of refrigeration system (3), the evaporimeter (4) that are connected successively by refrigeration piping, it is characterized in that: also be provided with a tube connector (5), low pressure liquid pipeline between expansion valve of refrigeration system (3) and evaporimeter (4) and evaporimeter (4) are connected with low-pressure gas pipeline between compressor (1), be provided with a magnetic valve (6) at this tube connector (5), the break-make of this magnetic valve (6) is located at temperature sensor (7) control on compressor (1) blast pipe.
2. the adjustable refrigerating plant of delivery temperature according to claim 1, it is characterized in that: the low-pressure gas pipeline junction between described tube connector (5) and described evaporimeter (4) and compressor (1), tube connector (5) stretches in the low-pressure gas pipe, and extends 1～3 centimetre along airflow direction.
3. the adjustable refrigerating plant of delivery temperature according to claim 2, it is characterized in that: described tube connector (5) stretches in the low-pressure gas pipe, and extends 2 centimetres along airflow direction.
4. according to claim 1 to one of the 3 adjustable refrigerating plants of described delivery temperature, it is characterized in that: described temperature sensor (7) is located at position on compressor (1) blast pipe apart from 12～18 centimetres of compressor (1) exhaust outlets.
5. the adjustable refrigerating plant of delivery temperature according to claim 4 is characterized in that: described temperature sensor (7) is located at position on compressor (1) blast pipe apart from 15 centimetres of compressor (1) exhaust outlets.
6. the adjustable refrigerating plant of delivery temperature according to claim 1 is characterized in that: described tube connector (5) is located at evaporimeter (4) import with the tie point of low pressure liquid pipeline.
7. the adjustable refrigerating plant of delivery temperature according to claim 1 is characterized in that: described tube connector (5) and the tie point of low pressure liquid pipeline are located at the liquid storage district of evaporimeter (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220486208.5U CN202835893U (en) | 2012-09-21 | 2012-09-21 | Discharge temperature adjustable refrigeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220486208.5U CN202835893U (en) | 2012-09-21 | 2012-09-21 | Discharge temperature adjustable refrigeration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202835893U true CN202835893U (en) | 2013-03-27 |
Family
ID=47947583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220486208.5U Expired - Lifetime CN202835893U (en) | 2012-09-21 | 2012-09-21 | Discharge temperature adjustable refrigeration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202835893U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222441A (en) * | 2015-09-01 | 2016-01-06 | 珠海格力电器股份有限公司 | Control method and device of refrigeration system |
| CN106288544A (en) * | 2016-08-19 | 2017-01-04 | 芜湖美智空调设备有限公司 | Air-conditioner and control method thereof |
-
2012
- 2012-09-21 CN CN201220486208.5U patent/CN202835893U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222441A (en) * | 2015-09-01 | 2016-01-06 | 珠海格力电器股份有限公司 | Control method and device of refrigeration system |
| CN105222441B (en) * | 2015-09-01 | 2018-11-23 | 珠海格力电器股份有限公司 | Control method and device of refrigeration system |
| CN106288544A (en) * | 2016-08-19 | 2017-01-04 | 芜湖美智空调设备有限公司 | Air-conditioner and control method thereof |
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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: 20130327 |
|
| CX01 | Expiry of patent term |