CN201811509U - Refrigerating plant with adjustable evaporation pressure and flow - Google Patents
Refrigerating plant with adjustable evaporation pressure and flow Download PDFInfo
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- CN201811509U CN201811509U CN2010205288864U CN201020528886U CN201811509U CN 201811509 U CN201811509 U CN 201811509U CN 2010205288864 U CN2010205288864 U CN 2010205288864U CN 201020528886 U CN201020528886 U CN 201020528886U CN 201811509 U CN201811509 U CN 201811509U
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Abstract
The utility model relates to the field of refrigerating plants, and particularly discloses a refrigerating plant with adjustable evaporation pressure and flow. A compressor is connected with a temperature sensor and a proportion-integration-differentiation (PID) temperature controller, an air outlet of the compressor is connected with a condenser, an air inlet of the compressor is connected with an air-liquid separator, the air-liquid separator is connected with an electronic adjusting valve bank, one end of a liquid storage device is connected with an outlet of the condenser while the other end of the liquid storage device is connected with an electronic expansion valve, one end of an evaporator is connected with the electronic expansion valve while the other end of the evaporator is connected with the electronic adjusting valve bank, and the evaporator is connected with a pressure sensor and a PID pressure controller or with the temperature sensor and the PID temperature controller. The refrigerating plant with adjustable evaporation pressure and flow greatly reduces operation energy consumption of high-precision constant-temperature rooms.
Description
Technical field
The utility model relates to the refrigerating plant field, relates in particular to the refrigerating plant of constant temperature and humidity air-treatment.
Background technology
Manufacturability high accuracy thermostatic constant wet chamber is widely used in each links such as the check, production of various industrial products.This class thermostatic constant wet chamber and usually comfortableness environment and common computer have bigger different with air-conditioned room.
Most typical example is exactly the air enthalpy difference laboratory that air conditioner detects usefulness,
The requirement that the air conditioning of a typical 5HP enthalpy difference laboratory need reach:
± 0.1 ℃ of 0～45 ℃ of control of the environment temperature of imitation indoor
± 0.1 ℃ (WB) of humidity 30～93% controls
± 0.1 ℃ of the environment temperature-15～60 of imitation outside ℃ control
± 0.1 ℃ (WB) of humidity 30～93% controls.
Tested function power test specification simultaneously:
Refrigerating capacity: 2000W～15000W;
Heating capacity: 2400W～18000W;
We from above-mentioned example as can be seen, it is bigger that the air-treatment unit of this class thermostatic constant wet chamber need satisfy the thermic load excursion, the control range of temperature, humidity is wide, the requirement that degree of regulation is high.At this moment the air-treatment unit of conventional design service intermittent and refrigeration unit all can not satisfy the demand.Past, way commonly used was, design a series of refrigeration unit, require its part is often opened according to the thermic load of rough estimate, the part sensible heat and the latent heat that balance cold machine of heating and the humidification by step-less adjustment makes the ability of air processing machine just in time suit the needed cooling and heating load of test then.
This way consumes energy very much, because, in order to reach the requirement of steady temperature, must be to the air processing of freezing, the process that refrigeration is handled can dehumidify, and again air is carried out humidification, and humidification has been brought sensible heat into.Cold and hot so wet interaction has consumed lot of energy.
With an above-mentioned 5HP enthalpy difference laboratory is example, in order to satisfy the test needs of a 5HP air-conditioning, often needs to dispose the inside and outside cold machine of each 15HP approximately.The highest power consumption during operation may reach about 100KW.In the middle of this, power consumption greatly is to cancel out each other between refrigeration and heating, humidification and dehumidifying, and is very uneconomical in fact.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of energy-conservation constant temperature and humidity device.
In order to solve the problems of the technologies described above, the technical solution of the utility model is like this:
The refrigerating plant of a kind of adjustable evaporating pressure and flow, the compressor, condenser, reservoir, electric expansion valve, evaporimeter, electrical adjustment valve group and the gas-liquid separator that comprise adjustable flow, wherein, be connected with temperature sensor and PID temperature controller on the described compressor, the gas outlet of described compressor is connected with condenser, and the air inlet of described compressor is connected with gas-liquid separator; Described gas-liquid separator is connected with electrical adjustment valve group; One end of described reservoir is connected with the outlet of condenser, and its other end is connected with electric expansion valve; One end of described evaporimeter is connected with electric expansion valve, and its other end is connected with electrical adjustment valve group; Be connected with pressure sensor and PID pressure controller or temperature sensor and PID temperature controller on the described evaporimeter.
Preferably, described condenser is connected with gas-liquid separator by a duplexure, and described duplexure is provided with the electrical adjustment valve.
Preferably, described electrical adjustment valve group comprises magnetic valve and electronic gas flow control valve (or equilibrated valve), and is in parallel between described magnetic valve and the electronic gas flow control valve (or equilibrated valve).
In the technique scheme, adopt the power source of the compressor of variable capacity as refrigeration unit, described compressor can be digital scroll compressor or the frequency-changeable compressor regulated with frequency converter, during operation, by changing compressor rotary speed, the refrigerant mass fluxes that can regulate whole refrigerating circuit.
Described condenser can be water-cooled or air-cooled condenser, and described condenser and reservoir can and be stored in the reservoir cold-producing medium heat release under high pressure liquefaction.
Described electric expansion valve is used to regulate the evaporating temperature of evaporimeter, during operation, gets the desired value of the dew-point temperature of room target operating condition as evaporating temperature.
Described evaporimeter is preferably designed for the large tracts of land evaporimeter, guarantees can fully cold-producing medium be evaporated to overheated gas under the maximum stream flow state.
Described electrical adjustment valve group is used to regulate the pressure of inspiration(Pi) of compressor, guarantees that compressor moves under normal suction pressure.When the evaporating pressure desired value was less than or equal to compressor air suction pressure, bypass solenoid valve was opened, and evaporimeter and compressor air suction are directly connected.Bypass electrical adjustment valve is according to the suction temperature control of compressor, and when the compressor air suction degree of superheat was too high, ejection lower amount of refrigerant liquid descended suction temperature, guarantees the continual and steady operation of compressor.Gas-liquid separator can be used as a small-sized heat exchanger use this moment, and the superheated steam that comes out when bypass liquid refrigerant and evaporimeter fully mixes and heat exchange at this, forms rational superheated steam and gets back to compressor.
The refrigerating plant of adjustable evaporating pressure described in the utility model and flow, can regulate the refrigerating capacity of refrigerating plant according to controlled burden requirement, and according to the evaporating pressure of the humidity requirement of operating mode control evaporimeter, thereby the general refrigeration ability and the latent cold that change unit become independent adjustable parameter, greatly reduce the operation power consumption in high-accuracy and constant greenhouse.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, the refrigerating plant of a kind of adjustable evaporating pressure of the utility model and flow, the compressor 1, condenser 2, reservoir 13, electric expansion valve 3, evaporimeter 4, electrical adjustment valve group 5 and the gas-liquid separator 6 that comprise adjustable flow, described compressor 1 and condenser 2, reservoir 13, electric expansion valve 3, evaporimeter 4, electrical adjustment valve group 5, gas-liquid separator 6 is connected successively and form the loop of a closure, wherein
Described compressor 1 is as the power source of refrigeration unit, can be digital scroll compressor or the frequency-changeable compressor regulated with frequency converter, by changing compressor 1 rotating speed, the refrigerant mass fluxes that can regulate whole refrigerating circuit;
Described compressor also is connected with temperature sensor 10 and PID controller 9, the temperature in space is transferred in described temperature sensor 10 inductions, and be transferred to PID controller 9, the cold junction of PID temperature control 9 is connected to the refrigerant flow that a frequency converter 8 is used to change compressor 1, realize the adjustable of flow, the hot junction of PID temperature control 9 is used to control the air processing machine heating;
Described electrical adjustment valve group 5 comprises magnetic valve and electronic gas flow control valve, and is in parallel between described magnetic valve and the electronic gas flow control valve; Described electrical adjustment valve group 5 is used to regulate the pressure of inspiration(Pi) of compressor 1, guarantees that compressor 1 moves under normal suction pressure.When the evaporating pressure desired value was less than or equal to compressor air suction pressure, bypass solenoid valve was opened, with evaporimeter 4 and compressor 1 air-breathing direct connection.Bypass electrical adjustment valve is according to the suction temperature control of compressor 1, and when compressor 1 suction superheat was too high, ejection lower amount of refrigerant liquid descended suction temperature, guarantees the continual and steady operation of compressor 1.Gas-liquid separator can be used as a small-sized heat exchanger use 6 this moments, and the superheated steam that comes out when bypass liquid refrigerant and evaporimeter fully mixes and heat exchange at this, forms rational superheated steam and gets back to compressor 1;
The evaporating temperature that described electric expansion valve 3 is used to regulate during operation, is got the desired value of the dew-point temperature of room target operating condition as evaporimeter 4 evaporating temperatures, and described electrical adjustment valve group 5 is mainly used in isolates evaporating pressure and pressure of inspiration(Pi);
Be connected with temperature sensor 11 and PID temperature controller 12 on the described evaporimeter 4, temperature sensor 11 feeds back to PID temperature controller 12 with the inlet temperature of evaporimeter 4, refrigerant saturation pressure with its dew-point temperature correspondence after process is calculated is set on PID pressure (temperature) controller 12 as desired value, change the pressure of evaporimeter 4 in view of the above, make evaporating pressure become an independently regulated variable.
The refrigerating plant of adjustable evaporating pressure described in the utility model and flow, can regulate the refrigerating capacity of refrigerating plant according to controlled burden requirement, and according to the evaporating pressure of the humidity requirement of operating mode control evaporimeter, thereby the general refrigeration ability and the latent cold that change unit become independent adjustable parameter, greatly reduce the operation power consumption in high-accuracy and constant greenhouse.
The foregoing description only is a kind of in the utility model plurality of embodiments; it is not qualification to the utility model design; under the prerequisite that does not break away from the utility model design philosophy; various modification and improvement that engineers and technicians in this area make the technical solution of the utility model all should fall into protection domain of the present utility model.
Claims (5)
1. the refrigerating plant of adjustable evaporating pressure and flow, the compressor that comprises adjustable flow, be connected with temperature sensor and PID temperature controller on the described compressor, it is characterized in that, also comprise condenser, reservoir, electric expansion valve, evaporimeter, electrical adjustment valve group and gas-liquid separator, the gas outlet of described compressor is connected with condenser, and the air inlet of described compressor is connected with gas-liquid separator; Described gas-liquid separator is connected with electrical adjustment valve group; One end of described reservoir is connected with the outlet of condenser, and its other end is connected with electric expansion valve; One end of described evaporimeter is connected with electric expansion valve, and its other end is connected with electrical adjustment valve group; Be connected with pressure sensor and PID pressure controller on the described evaporimeter or be connected with temperature sensor and the PID temperature controller.
2. the refrigerating plant of adjustable evaporating pressure according to claim 1 and flow is characterized in that, described condenser is connected with gas-liquid separator by a duplexure, and described duplexure is provided with the electrical adjustment valve.
3. the refrigerating plant of adjustable evaporating pressure according to claim 1 and flow, it is characterized in that, described electrical adjustment valve group is formed by magnetic valve and electronic gas flow control valve or by magnetic valve and equilibrated valve, and is in parallel between described magnetic valve and electronic gas flow control valve or magnetic valve and the equilibrated valve.
4. according to the refrigerating plant of claim 1,2 or 3 described adjustable evaporating pressures and flow, it is characterized in that described compressor is digital scroll compressor or the frequency-changeable compressor regulated with frequency converter.
5. according to the refrigerating plant of claim 1,2 or 3 described adjustable evaporating pressures and flow, it is characterized in that described condenser is water-cooled condenser or air-cooled condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205288864U CN201811509U (en) | 2010-09-13 | 2010-09-13 | Refrigerating plant with adjustable evaporation pressure and flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205288864U CN201811509U (en) | 2010-09-13 | 2010-09-13 | Refrigerating plant with adjustable evaporation pressure and flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201811509U true CN201811509U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205288864U Expired - Fee Related CN201811509U (en) | 2010-09-13 | 2010-09-13 | Refrigerating plant with adjustable evaporation pressure and flow |
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| CN (1) | CN201811509U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296272A (en) * | 2014-10-27 | 2015-01-21 | 广东申菱空调设备有限公司 | High-temperature type dehumidifier and control method thereof |
| CN104949297A (en) * | 2014-03-27 | 2015-09-30 | 珠海格力电器股份有限公司 | Air conditioning unit and pressure control method thereof |
| CN105091381A (en) * | 2015-07-07 | 2015-11-25 | 丹华海洋工程装备(上海)有限公司 | Refrigerating unit of ship refrigeratory |
| BE1021883B1 (en) * | 2014-05-09 | 2016-01-25 | Atlas Copco Airpower, Naamloze Vennootschap | METHOD AND APPARATUS FOR COOLING A GAS |
| CN105783136A (en) * | 2016-04-14 | 2016-07-20 | 海信（山东）空调有限公司 | Outdoor air-conditioning unit and air-conditioning system |
| CN106642858A (en) * | 2017-01-12 | 2017-05-10 | 珠海格力电器股份有限公司 | Multi-split air-conditioning system and liquid discharge control method and device for same |
| CN106969521A (en) * | 2017-04-08 | 2017-07-21 | 深圳高丽科学仪器有限公司 | Multiple working medium evaporation supercooling superpressure intelligence adjusts single compressor Auto-cascade cycle system |
| CN108662798A (en) * | 2018-06-21 | 2018-10-16 | 珠海格力电器股份有限公司 | A kind of handpiece Water Chilling Units and its control method, device |
| CN113465217A (en) * | 2021-06-29 | 2021-10-01 | 青岛海尔空调电子有限公司 | Refrigeration system and control method for refrigeration system |
-
2010
- 2010-09-13 CN CN2010205288864U patent/CN201811509U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949297A (en) * | 2014-03-27 | 2015-09-30 | 珠海格力电器股份有限公司 | Air conditioning unit and pressure control method thereof |
| BE1021883B1 (en) * | 2014-05-09 | 2016-01-25 | Atlas Copco Airpower, Naamloze Vennootschap | METHOD AND APPARATUS FOR COOLING A GAS |
| WO2015168754A3 (en) * | 2014-05-09 | 2016-02-04 | Atlas Copco Airpower, Naamloze Vennootschap | Method and device for cool drying a gas |
| US9914092B2 (en) | 2014-05-09 | 2018-03-13 | Atlas Copco Airpower Naamloze Vennootschap | Method and device for cool drying a gas |
| CN104296272A (en) * | 2014-10-27 | 2015-01-21 | 广东申菱空调设备有限公司 | High-temperature type dehumidifier and control method thereof |
| CN105091381A (en) * | 2015-07-07 | 2015-11-25 | 丹华海洋工程装备(上海)有限公司 | Refrigerating unit of ship refrigeratory |
| CN105783136A (en) * | 2016-04-14 | 2016-07-20 | 海信（山东）空调有限公司 | Outdoor air-conditioning unit and air-conditioning system |
| CN105783136B (en) * | 2016-04-14 | 2019-04-02 | 海信（山东）空调有限公司 | A kind of outdoor air-conditioner and air-conditioning system |
| CN106642858A (en) * | 2017-01-12 | 2017-05-10 | 珠海格力电器股份有限公司 | Multi-split air-conditioning system and liquid discharge control method and device for same |
| CN106969521A (en) * | 2017-04-08 | 2017-07-21 | 深圳高丽科学仪器有限公司 | Multiple working medium evaporation supercooling superpressure intelligence adjusts single compressor Auto-cascade cycle system |
| CN108662798A (en) * | 2018-06-21 | 2018-10-16 | 珠海格力电器股份有限公司 | A kind of handpiece Water Chilling Units and its control method, device |
| CN113465217A (en) * | 2021-06-29 | 2021-10-01 | 青岛海尔空调电子有限公司 | Refrigeration system and control method for refrigeration system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20180913 |
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| CF01 | Termination of patent right due to non-payment of annual fee |