CN208606441U - Testing equipment condensing pressure frequency-changing control system - Google Patents
Testing equipment condensing pressure frequency-changing control system Download PDFInfo
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- CN208606441U CN208606441U CN201821270019.8U CN201821270019U CN208606441U CN 208606441 U CN208606441 U CN 208606441U CN 201821270019 U CN201821270019 U CN 201821270019U CN 208606441 U CN208606441 U CN 208606441U
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- frequency
- condensing pressure
- condenser
- testing equipment
- variable controller
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Abstract
The utility model testing equipment condensing pressure frequency-changing control system, including compressor, condenser, frequency-variable controller, fluid reservoir, device for drying and filtering and the evaporator for being interconnected and being used in combination, the refrigerant exit of condenser connects capillary one end, and the capillary other end is connected to frequency-variable controller, frequency-variable controller passes through sensing element, the condensing pressure of real-time detection condensator outlet；Required pressure value is set by frequency-variable controller, meet system refrigerant circulation, the high pressure gaseous refrigerant that compressor operating recycles can be converted into the liquid refrigerants of normal temperature high voltage again, when summer environment temperature is higher, to reduce condensing pressure, adjuster can allow condenser fan capacity operation, and when winter environment temperature is lower, adjuster can allow condenser fan frequency reducing operating even to shut down.
Description
Technical field
The utility model relates to automated control technologies, in particular to testing equipment technical field of automatic control, specifically
, show a kind of testing equipment condensing pressure frequency-changing control system.
Background technique
Be related in minienvironment testing equipment air cooling chiller group generallyd use in cooling/constant temperature air-cooled condenser+
The combination of condensation fan cools down compressor exhaust temperature, and the cardinal principle of this control method is: in cooling/perseverance
Wen Shi, by the cooling fin of condenser itself and the capacity operation of condenser fan, by what is generated in compressor operational process
The characteristics of heat is taken away, and provides precondition for the next step throttling cooling of refrigerant, such method is simple and effective, but phase
It is corresponding the disadvantage is that heat exchange area and the air quantity of condenser fan when condenser are fixed values, regardless of the refrigerant for entering condenser
Temperature be height be it is low, the heat exchange amount of condenser be it is equally big, when the environment temperature temperature difference is larger, such as 40 DEG C/winter of summer 5
DEG C, the refrigeration effect difference that refrigeration system is showed can be especially big, and it is whole that the wind that in addition condensation fan generates, which is made an uproar very greatly,
The main noise source of equipment, and energy consumption is bigger when condenser fan full power operation.
Therefore, it is necessary to provide a kind of testing equipment condensing pressure frequency control system to solve the above problems.
Utility model content
The purpose of the utility model is to provide a kind of testing equipment condensing pressure frequency control systems.
Technical solution is as follows:
A kind of testing equipment condensing pressure frequency control system, including compressor that is interconnected and being used in combination, condensation
Device, frequency-variable controller, fluid reservoir, device for drying and filtering and evaporator, the refrigerant exit of condenser connect capillary one end, and
The capillary other end is connected to frequency-variable controller, and frequency-variable controller passes through sensing element, real-time detection condensator outlet
Condensing pressure；
Required pressure value is set by frequency-variable controller, meets system refrigerant circulation, and can will compress
The high pressure gaseous refrigerant that machine working cycles go out is converted into the liquid refrigerants of normal temperature high voltage, when summer environment temperature is higher,
To reduce condensing pressure, adjuster can allow condenser fan capacity operation, and when winter environment temperature is lower, adjuster can allow cold
Solidifying fan frequency reducing operating even shuts down.
Further, the condenser is air-cooled condenser, for being provided with condensation fan.
Further, high-voltage switch gear and high pressure gauge are provided between frequency-variable controller, fluid reservoir.
Further, the fluid reservoir is communicated with liquid-sighting glass.
Further, the capillary is also connected with impulse electromagnetic valve.
After compared with prior art, the utility model is applied to testing equipment, testing equipment cooling/constant temperature stability is good,
Equipment energy consumption is small, and noise is small, can effectively avoid system high pressure superpressure, highly-safe.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
Embodiment:
Referring to Fig. 1, the present embodiment shows a kind of testing equipment condensing pressure frequency control system, including interconnected and phase
Compressor 1, condenser 2, frequency-variable controller 3, fluid reservoir 7, device for drying and filtering 8 and the evaporator 12 being used cooperatively, condenser
2 refrigerant exit connects 11 one end of capillary, and 11 other end of the capillary is connected to frequency-variable controller 3, frequency-variable controller 3
The condensing pressure exported by sensing element, real-time detection condenser 2；
Required pressure value is set by frequency-variable controller 3, meets system refrigerant circulation, and can will compress
The high pressure gaseous refrigerant that machine working cycles go out is converted into the liquid refrigerants of normal temperature high voltage, when summer environment temperature is higher,
To reduce condensing pressure, adjuster can allow condenser fan capacity operation, and when winter environment temperature is lower, adjuster can allow cold
Solidifying fan frequency reducing operating even shuts down.
The condenser 2 is air-cooled condenser, for being provided with condensation fan 3.
High-voltage switch gear 5 and high pressure gauge 6 are provided between frequency-variable controller 3, fluid reservoir 7.
The fluid reservoir 7 is communicated with liquid-sighting glass 9.
The capillary 11 is also connected with impulse electromagnetic valve 10.
Wherein:
Compressor 1: the refrigerant gas of low-temp low-pressure is compressed into the refrigerant gas of high temperature and pressure；
Condenser 2: by heat exchange fin and heat exchanger tube, the refrigerant gas of high temperature and pressure is handed over by the heat to air
It changes, becomes the refrigerant liquid of normal temperature high voltage；
Condensation fan 3: the air circulation generated by blower increases the heat exchange amount of air-cooled condenser, auxiliary condenser drop
Temperature；
Pressure switch 5: when system pressure is excessively high, starting protection shutdown action, protection compressor will not be damaged；
High pressure gauge 6: specific system high pressure value is detected；
Liquid storage device 7: for storing the liquid refrigerant come out from air-cooled condenser, gaseous refrigerant is avoided to enter throttling dress
It sets；
Device for drying and filtering 8: impurity and moisture in filtering refrigerant；
Impulse electromagnetic valve 10: according to the difference of operating room's actual temperature and set temperature, to control pulsating electronic expansion
The on-off of valve, to control the refrigerant flow into evaporator；
Throttle capillary tube 11: by way of reducing pressure by regulating flow, by the refrigerant liquid decompressional expansion of normal temperature high voltage at low temperature
The refrigerant air-liquid mixture of low pressure；
Evaporator 12: by forced-air circulation, by the low-temperature low-pressure refrigerant liquid and operating room's progress heat after throttling
Exchange, the refrigerant gas for becoming low-temp low-pressure after liquid refrigerant evaporation return to compressor low-pressure end.
After compared with prior art, the utility model is applied to testing equipment, testing equipment cooling/constant temperature stability is good,
Equipment energy consumption is small, and noise is small, can effectively avoid system high pressure superpressure, highly-safe.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to practical
Novel protection scope.
Claims (5)
1. a kind of testing equipment condensing pressure frequency-changing control system, it is characterised in that: including what is be interconnected and be used in combination
The refrigerant exit of compressor, condenser, frequency-variable controller, fluid reservoir, device for drying and filtering and evaporator, condenser connects hair
Tubule one end, and the capillary other end is connected to frequency-variable controller, for frequency-variable controller by sensing element, real-time detection is cold
The condensing pressure of condenser outlet；
Required pressure value is set by frequency-variable controller, meets system refrigerant circulation, and can be by compressor work
The high pressure gaseous refrigerant for making to recycle is converted into the liquid refrigerants of normal temperature high voltage, when summer environment temperature is higher, for drop
Low condensing pressure, adjuster can allow condenser fan capacity operation, and when winter environment temperature is lower, adjuster can allow condensating wind
Fan frequency reducing operating even shuts down.
2. a kind of testing equipment condensing pressure frequency-changing control system according to claim 1, it is characterised in that: the condensation
Device is air-cooled condenser, for being provided with condensation fan.
3. a kind of testing equipment condensing pressure frequency-changing control system according to claim 2, it is characterised in that: frequency control
High-voltage switch gear and high pressure gauge are provided between device, fluid reservoir.
4. a kind of testing equipment condensing pressure frequency-changing control system according to claim 3, it is characterised in that: the liquid storage
Tank is communicated with liquid-sighting glass.
5. a kind of testing equipment condensing pressure frequency-changing control system according to claim 4, it is characterised in that: the capillary
Pipe is also connected with impulse electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821270019.8U CN208606441U (en) | 2018-08-08 | 2018-08-08 | Testing equipment condensing pressure frequency-changing control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821270019.8U CN208606441U (en) | 2018-08-08 | 2018-08-08 | Testing equipment condensing pressure frequency-changing control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208606441U true CN208606441U (en) | 2019-03-15 |
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ID=65670823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821270019.8U Active CN208606441U (en) | 2018-08-08 | 2018-08-08 | Testing equipment condensing pressure frequency-changing control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN208606441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440504A (en) * | 2022-02-14 | 2022-05-06 | 江苏拓米洛环境试验设备有限公司 | Refrigerating system |
-
2018
- 2018-08-08 CN CN201821270019.8U patent/CN208606441U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440504A (en) * | 2022-02-14 | 2022-05-06 | 江苏拓米洛环境试验设备有限公司 | Refrigerating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215300 plants A6, a7, a8 and B10, No. 8, Huacheng Road, Lujia Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Jiangsu Tuomiluo High-end Equipment Co.,Ltd. Address before: 215300 No.427 Sanxiang Road, Kunshan Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee before: JIANGSU TOLIMO ENVIRONMENT TESTING EQUIPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address |