CN105674636A - High-low temperature test chamber with function of protecting compressor and refrigeration system - Google Patents
High-low temperature test chamber with function of protecting compressor and refrigeration system Download PDFInfo
- Publication number
- CN105674636A CN105674636A CN201610197035.8A CN201610197035A CN105674636A CN 105674636 A CN105674636 A CN 105674636A CN 201610197035 A CN201610197035 A CN 201610197035A CN 105674636 A CN105674636 A CN 105674636A
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- CN
- China
- Prior art keywords
- compressor
- temperature
- electromagnetic valve
- refrigeration system
- test chamber
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Gases (AREA)
Abstract
The invention provides a high-low temperature test chamber with the function of protecting a compressor and a refrigeration system. The high-low temperature test chamber comprises the compressor, and high-temperature and high-pressure gas exhausted out of the compressor sequentially passes through a condenser, a drying device, an electromagnetic valve B, a throttle and an evaporator to return to the compressor. An exhaust opening of the compressor is connected with an exhaust pressure sensor and an exhaust temperature sensor. A gas return opening of the compressor is connected with a gas return pressure sensor and a gas return temperature sensor. A compensation electromagnetic valve for too low gas return temperature and pressure is arranged between an inlet of the condenser and an outlet of the evaporator. A cooling electromagnetic valve for too high exhaust temperature and pressure and the throttle are connected between the outlet of the evaporator and an outlet of a dry filter in series. Opening and closing of the cooling electromagnetic valve and the compensation electromagnetic valve are controlled by a control system according to the signals of the exhaust sensors and the signals of the gas return sensors. The exhaust temperature and gas return temperature of the refrigeration system are kept constant all the time, and therefore the constant work temperature of the refrigeration compressor and components in the compressor is guaranteed, a compressor body and the whole refrigeration system are protected by the cooling electromagnetic valve and the compensation electromagnetic valve, and the service life is prolonged.
Description
Technical field
The invention belongs to high-low temperature test chamber field, especially relate to a kind of high-low temperature test chamber with compressor and refrigeration system defencive function.
Background technology
High/low temperature experimental box is as a kind of experiment appliance testing product reliability, it is widely used in aviation, space flight, military project, electronics, communication, machinery, automobile, motorcycle, biological, agricultural, weather, environmental protection, the fields such as building materials, temperature, pressure is required that for some the performance test of the product in stricter field has great importance by the temperature constancy of high/low temperature experimental box, once the range of error of temperature constant will affect too greatly the performance test results of the product in some field, so the constant-temperature precision of high/low temperature experimental box is to evaluate an important indicator of its performance quality, high-low temperature test chamber is also had to there is the problem that compressor does not have the too high or too low protection of temperature and pressure, so how design a kind of high-low temperature test chamber with compressor and refrigeration system defencive function and become the problem of those skilled in the art's research.
Summary of the invention
In view of this, it is contemplated that propose a kind of high-low temperature test chamber with compressor and refrigeration system defencive function.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of high-low temperature test chamber with compressor and refrigeration system defencive function, including compressor, high temperature and high pressure gas condensed device successively, drying device, B electromagnetic valve, reducer and vaporizer that described compressor is discharged return to compressor return air mouth, the air vent of described compressor is connected to back pressure transducer and exhaust gas temperature sensor, the gas returning port of described compressor is connected to back pressure sensor and suction temperature sensor, it is serially connected with suction temperature between described condenser inlet and described evaporator outlet, hypotony compensation electromagnetic valve, described evaporator outlet is provided with, between exporting with described drying device, the delivery temperature concatenated, hypertonia cooling electromagnetic valve and reducer, the RST that described control system gathers according to described back pressure transducer and exhaust gas temperature sensor controls delivery temperature, hypertonia cooling electromagnetic valve action, control system controls suction temperature according to the signal of described back pressure sensor and suction temperature sensor acquisition, hypotony compensation electromagnetic valve events, B electromagnetic valve is connected with controlling system.
Described drying device is device for drying and filtering.
Described temperature, pressure induction installation is high-precision temperature, pressure integrated sensor.
Described control system adopts instrument control Special temp controller module FA211 or FA200 to control.
Described reducer is capillary tube.
Relative to prior art, the high-low temperature test chamber with compressor and refrigeration system defencive function of the present invention has the advantage that
1. the present invention remains that the aerofluxus of refrigeration system and suction temperature are constant, thus ensure that refrigeration compressor and the working temperature constant of compressor internal components, compressor block and whole refrigeration system are protected by cooling, compensation electromagnetic valve, life-saving;
2. eliminate the heating inductor below vaporizer, saves energy;
3. drying device has filtering function can adsorb steam, filtering particle impurity etc., further extension device service life.
Accompanying drawing explanation
The accompanying drawing constituting the part of the present invention is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention. additionally, term " first ", " second " etc. are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic. thus, the feature defining " first ", " second " etc. can express or implicitly include one or more these features. in describing the invention, except as otherwise noted, " multiple " are meant that two or more.
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly; Can be mechanically connected, it is also possible to be electrical connection; Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals. For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention by concrete condition.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
A kind of high-low temperature test chamber with compressor and refrigeration system defencive function, including compressor, high temperature and high pressure gas condensed device successively, drying device, B electromagnetic valve, reducer and vaporizer that described compressor is discharged return to compressor return air mouth, the air vent of described compressor is connected to back pressure transducer and exhaust gas temperature sensor, the gas returning port of described compressor is connected to back pressure sensor and suction temperature sensor, it is serially connected with suction temperature between described condenser inlet and described evaporator outlet, hypotony compensation electromagnetic valve, described evaporator outlet is provided with, between exporting with described drying device, the delivery temperature concatenated, hypertonia cooling electromagnetic valve and reducer, when the signal of described back pressure transducer and exhaust gas temperature sensor collection is above the peak of High Temperature High Pressure set point, described control system opens delivery temperature, hypertonia cooling electromagnetic valve, compressor is carried out decrease temperature and pressure,During lower than the minimum of High Temperature High Pressure set point, described control system closes delivery temperature, hypertonia cooling electromagnetic valve, when the signal of described back pressure sensor and suction temperature sensor acquisition is below the minimum of low-temp low-pressure set point, described control system opens suction temperature, hypotony compensation electromagnetic valve, compressor is carried out increasing temperature and pressure, during higher than the peak of low-temp low-pressure set point, described control system closes suction temperature, hypotony compensation electromagnetic valve. Compressor loop is protected by delivery temperature, hypertonia cooling electromagnetic valve and suction temperature, hypotony compensation electromagnetic valve, extends the service life of compressor. B electromagnetic valve is by controlling system control, it is prevented that the damage that when compressor is closed, equipment is caused by backflow.
Described drying device is device for drying and filtering. Drying device has filtering function can adsorb steam, filtering particle impurity etc., further extension device service life.
Described temperature, pressure induction installation is high-precision temperature, pressure integrated sensor. Integrated transducer is conveniently installed and used, and improves packaging efficiency.
Described control system adopts instrument control Special temp controller module FA211 or FA200 to control. Instrument control Special temp controller module FA211 or FA200 automatic control system have the advantages such as stability height, security performance is strong, capacity of resisting disturbance is strong, in addition, instrument control Special temp controller module FA211 or FA200 in-system programming process obtain effective simplification, workability can be high, the elevator of skyscraper obtains general application so that the manipulation of operator becomes easy. Meanwhile, it is convenient that instrument control Special temp controller module FA211 or FA200 control system installs relatively other control system, and daily maintenance is also easier.
Described reducer is capillary tube. Throttle more stable.
Work process: when the signal of described back pressure transducer and exhaust gas temperature sensor collection is above the peak of High Temperature High Pressure set point, described control system opens delivery temperature, hypertonia cooling electromagnetic valve, during lower than the minimum of High Temperature High Pressure set point, described control system closes delivery temperature, hypertonia cooling electromagnetic valve, when the signal of described back pressure sensor and suction temperature sensor acquisition is below the minimum of low-temp low-pressure set point, described control system opens suction temperature, hypotony compensation electromagnetic valve, during higher than the peak of low-temp low-pressure set point, described control system closes suction temperature, hypotony compensation electromagnetic valve, prevent compressor fault, protection compressor, extend the compressor life-span.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (5)
1. a high-low temperature test chamber with compressor and refrigeration system defencive function, it is characterized in that: include compressor, high temperature and high pressure gas condensed device successively, drying device, B electromagnetic valve, reducer and vaporizer that described compressor is discharged return to compressor return air mouth, the air vent of described compressor is connected to back pressure transducer and exhaust gas temperature sensor, the gas returning port of described compressor is connected to back pressure sensor and suction temperature sensor, it is serially connected with suction temperature between described condenser inlet and described evaporator outlet, hypotony compensation electromagnetic valve, described evaporator outlet is provided with, between exporting with described drying device, the delivery temperature concatenated, hypertonia cooling electromagnetic valve and reducer, the RST that described control system gathers according to described back pressure transducer and exhaust gas temperature sensor controls delivery temperature, hypertonia cooling electromagnetic valve action, control system controls suction temperature according to the signal of described back pressure sensor and suction temperature sensor acquisition, hypotony compensation electromagnetic valve events, B electromagnetic valve is connected with controlling system.
2. the high-low temperature test chamber with compressor and refrigeration system defencive function according to claim 1, it is characterised in that: described drying device is device for drying and filtering.
3. the high-low temperature test chamber with compressor and refrigeration system defencive function according to claim 1, it is characterised in that: described temperature, pressure induction installation is high-precision temperature, pressure integrated sensor.
4. the high-low temperature test chamber with compressor and refrigeration system defencive function according to claim 2, it is characterised in that: described control system adopts instrument control Special temp controller module FA211 or FA200 to control.
5. according to any one of claim 1-4, there is compressor and the high-low temperature test chamber of refrigeration system defencive function, it is characterised in that: described reducer is capillary tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610197035.8A CN105674636A (en) | 2016-03-30 | 2016-03-30 | High-low temperature test chamber with function of protecting compressor and refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610197035.8A CN105674636A (en) | 2016-03-30 | 2016-03-30 | High-low temperature test chamber with function of protecting compressor and refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105674636A true CN105674636A (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610197035.8A Pending CN105674636A (en) | 2016-03-30 | 2016-03-30 | High-low temperature test chamber with function of protecting compressor and refrigeration system |
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| CN (1) | CN105674636A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356009A (en) * | 2017-07-25 | 2017-11-17 | 广东美的暖通设备有限公司 | Multiple on-line system and its low temperature control method |
| CN109078666A (en) * | 2018-09-29 | 2018-12-25 | 巩义市科瑞仪器有限公司 | A kind of energy-saving low-temperature isothermal experiments equipment |
| CN111608929A (en) * | 2020-05-20 | 2020-09-01 | 无锡职业技术学院 | Centrifugal compressor and refrigerating system of gas bearing |
| CN113758048A (en) * | 2021-08-12 | 2021-12-07 | 深圳市派沃新能源科技股份有限公司 | Air energy heat pump low-temperature protection system |
| CN116578032A (en) * | 2023-06-29 | 2023-08-11 | 成都领目科技有限公司 | Automatic protection incubator control method and control system for low-temperature anti-fog test mode |
| CN116879066A (en) * | 2023-09-04 | 2023-10-13 | 天津亭华科技有限公司 | Gas cylinder fatigue composite environment test system capable of controlling medium temperature |
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| CN102080896A (en) * | 2011-01-24 | 2011-06-01 | 李静 | Electric vehicle air conditioner using vacuum reducer valve (VRV) system |
| WO2012055268A1 (en) * | 2010-10-28 | 2012-05-03 | 西安锐信科技有限公司 | Temperature control processing system and method |
| CN205747603U (en) * | 2016-03-30 | 2016-11-30 | 天津亭华科技有限公司 | There is compressor and the high-low temperature test chamber of refrigeration system defencive function |
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2016
- 2016-03-30 CN CN201610197035.8A patent/CN105674636A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012055268A1 (en) * | 2010-10-28 | 2012-05-03 | 西安锐信科技有限公司 | Temperature control processing system and method |
| CN102080896A (en) * | 2011-01-24 | 2011-06-01 | 李静 | Electric vehicle air conditioner using vacuum reducer valve (VRV) system |
| CN205747603U (en) * | 2016-03-30 | 2016-11-30 | 天津亭华科技有限公司 | There is compressor and the high-low temperature test chamber of refrigeration system defencive function |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356009A (en) * | 2017-07-25 | 2017-11-17 | 广东美的暖通设备有限公司 | Multiple on-line system and its low temperature control method |
| CN107356009B (en) * | 2017-07-25 | 2021-05-04 | 广东美的暖通设备有限公司 | Multi-split air conditioning system and low-temperature control method thereof |
| CN109078666A (en) * | 2018-09-29 | 2018-12-25 | 巩义市科瑞仪器有限公司 | A kind of energy-saving low-temperature isothermal experiments equipment |
| CN111608929A (en) * | 2020-05-20 | 2020-09-01 | 无锡职业技术学院 | Centrifugal compressor and refrigerating system of gas bearing |
| CN111608929B (en) * | 2020-05-20 | 2022-04-01 | 无锡职业技术学院 | Refrigerating system with gas bearing type centrifugal compressor |
| CN113758048A (en) * | 2021-08-12 | 2021-12-07 | 深圳市派沃新能源科技股份有限公司 | Air energy heat pump low-temperature protection system |
| CN113758048B (en) * | 2021-08-12 | 2024-04-19 | 深圳市派沃新能源科技股份有限公司 | Air source heat pump low temperature protection system |
| CN116578032A (en) * | 2023-06-29 | 2023-08-11 | 成都领目科技有限公司 | Automatic protection incubator control method and control system for low-temperature anti-fog test mode |
| CN116578032B (en) * | 2023-06-29 | 2023-09-22 | 成都领目科技有限公司 | Automatic protection incubator control method and control system for low-temperature anti-fog test mode |
| CN116879066A (en) * | 2023-09-04 | 2023-10-13 | 天津亭华科技有限公司 | Gas cylinder fatigue composite environment test system capable of controlling medium temperature |
| CN116879066B (en) * | 2023-09-04 | 2023-11-17 | 天津亭华科技有限公司 | Gas cylinder fatigue composite environment test system capable of controlling medium temperature |
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Application publication date: 20160615 |