CN103673440A - Refrigerated dryer with electronic bypass type energy adjusting function - Google Patents
Refrigerated dryer with electronic bypass type energy adjusting function Download PDFInfo
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- CN103673440A CN103673440A CN201210320263.1A CN201210320263A CN103673440A CN 103673440 A CN103673440 A CN 103673440A CN 201210320263 A CN201210320263 A CN 201210320263A CN 103673440 A CN103673440 A CN 103673440A
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- expansion valve
- condenser
- filter
- compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to a refrigerated dryer with an electronic bypass type energy adjusting function. The refrigerated dryer comprises a compressor, a condenser, a first filter, a second filter, a thermal expansion valve and an evaporator. The compressor is connected with one end of the condenser. The other end of the condenser is connected with one end of the thermal expansion valve through the second filter. The other end of the thermal expansion valve is connected with one end of the evaporator. The refrigerated dryer further comprises an electronic expansion valve and a refrigerant evaporator outlet temperature probe. The refrigerant evaporator outlet temperature probe is arranged at the position of the outlet of the evaporator. The third end of the thermal expansion valve and one end of the electronic expansion valve are connected to a gas suction pipe of the compressor. The other end of the electronic expansion valve is connected with the one-fourth to one-fifth portion of the upper half portion of the condenser through the first filter. The opening degree of the electronic expansion valve is controlled by an electronic expansion valve controller. The aims of adjusting the gas exhaust amount of the compressor and raising the evaporating pressure and the evaporating temperature are achieved, and normal running of a unit is ensured.
Description
Technical field
The present invention relates to a kind of freezing type drier, relate in particular to the loop structure of this freezing type drier.
Background technology
Freezing type drier is comprised of refrigeration system and air-channel system.Wherein refrigeration system is comprised of parts such as compressor, condenser, expansion valve, capacity adjusting valve, evaporimeters, and from air compressor machine out, the evaporimeter of flowing through, carries out heat exchange with evaporimeter to compressed air.Unit is separated the moisture in compressed air by kind of refrigeration cycle, then outside discharge chamber, in actual motion is used, because compressed-air actuated use amount can be sometimes many, sometimes few, when compressed air use amount tails off, heat load also diminishes thereupon, now unit can not stop again, otherwise just do not have the effect dewatering, but when unit still moves with 100% ability, refrigerating capacity is inevitable too large again, and make evaporation not exclusively, and cause evaporating pressure and temperature to reduce, when spending lower than 0, the water freeze-outing in evaporimeter can freeze, thereby cause evaporimeter to be damaged by frost, bursting by freezing.
This shows, freezing type drier must be equipped with a reliable and stable energy conditioner, thereby reaches reduction refrigerating capacity, and the object that the device that avoids evaporating is icing guarantees that unit normally moves.
Summary of the invention
The technical issues that need to address of the present invention have been to provide a kind of freezing type drier of having electronic bypass type energy adjustment, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: compressor, condenser, the first filter, the second filter, heating power expansion valve, evaporimeter; Described compressor is connected with one end of condenser; The other end of described condenser is connected with one end of heating power expansion valve through the second filter; The other end of described heating power expansion valve is connected with one end of evaporimeter; Also comprise: electric expansion valve and refrigerant evaporator outlet temperature probe; Described refrigerant evaporator outlet temperature probe is arranged on the exit of evaporimeter; The 3rd end of described heating power expansion valve and an end of electric expansion valve are connected on compressor suction duct; The other end of described electric expansion valve joins by 1/4 ~ 1/5 of the first filter and condenser the first half; The aperture of described electric expansion valve is controlled by electronic expansion valve controller.
Compared with prior art; the invention has the beneficial effects as follows: by detecting refrigerant evaporator outlet temperature; regulate the aperture of electric expansion valve; to reach the object that regulates compressor air-discharging amount and improve evaporating pressure and temperature; thereby reach reduction refrigerating capacity; the object that the device that avoids evaporating is icing, guarantees that unit normally moves.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail:
As seen from Figure 1: the present invention includes: compressor 1, condenser 2, the first filter 5, the second filter 8, heating power expansion valve 3, evaporimeter 4; Described compressor 1 is connected with one end of condenser 2; The other end of described condenser 2 is connected with one end of heating power expansion valve 3 through the second filter 8; The other end of described heating power expansion valve 3 is connected with one end of evaporimeter 4; Also comprise: electric expansion valve 6 and refrigerant evaporator outlet temperature probe 7; Described refrigerant evaporator outlet temperature probe 7 is arranged on the exit of evaporimeter 4; The 3rd end of described heating power expansion valve 3 and an end of electric expansion valve 6 are connected on compressor suction duct; The other end of described electric expansion valve 6 joins by the first filter 5 and 1/4 ~ 1/5 of condenser the first half; The aperture of described electric expansion valve 6 is controlled by electronic expansion valve controller (not shown).
The adjustable range of described electric expansion valve 6 is between 0～500 pulse or 0～2000 pulse.
The refrigerant evaporator outlet temperature value (or compressor return air temperature) that in the present invention, electronic expansion valve opening detects according to electronic expansion valve controller is controlled with difference and the rate of change of setting value.
Operation principle of the present invention is as follows:
Electronic expansion valve controller is formulated PID reconciliation statement according to the observed temperature of refrigerant evaporator outlet temperature probe 7 and setting value, when unit refrigerating operaton, temperature by detecting refrigerant evaporator outlet temperature probe 7 with set value between difference and the rate of change aperture of controlling electric expansion valve, when refrigerant evaporator outlet temperature probe 7 approaches or is less than or equal to setting value, when electric expansion valve is opened, the gaseous coolant of condensed a little high pressure is entered in compressor return air pipe through electronic expansion valve regulation are laggard by condenser 2, thereby reach the effect of unloading and raising evaporating pressure and temperature, guarantee that evaporating temperature is more than 0 degree,
The aperture of electric expansion valve is dynamically to control in whole process, the amplitude of valve adjustment and aperture are to be controlled according to the observed temperature of refrigerant evaporator outlet temperature probe 7 and setting value by electronic expansion valve controller, when the observed temperature of refrigerant evaporator outlet temperature probe 7 is during higher than setting value certain limit value, electronic expansion is closed.
From experiment test, after having used this technology, the operation quite stable of unit, even if can guarantee that when zero load evaporating temperature is more than 0 degree, while guaranteeing to move, evaporimeter can be not freezing yet, and cost only has half left and right of conventional hot gas bypass valve, and control is more accurate, more flexible, when closing, leakage rate is less, greatly improve unit efficiency, increased the service life of unit.
Claims (2)
1. a freezing type drier for having electronic bypass type energy adjustment, comprising: compressor, condenser, the first filter, the second filter, heating power expansion valve, evaporimeter; Described compressor is connected with one end of condenser; The other end of described condenser is connected with one end of heating power expansion valve through the second filter; The other end of described heating power expansion valve is connected with one end of evaporimeter; It is characterized in that: also comprise: electric expansion valve and refrigerant evaporator outlet temperature probe; Described refrigerant evaporator outlet temperature probe is arranged on the exit of evaporimeter; The 3rd end of described heating power expansion valve and an end of electric expansion valve are connected on compressor suction duct; The other end of described electric expansion valve joins by 1/4 ~ 1/5 of the first filter and condenser the first half; The aperture of described electric expansion valve is controlled by electronic expansion valve controller.
2. the freezing type drier of having electronic bypass type energy adjustment according to claim 1, is characterized in that: the adjustable range of described electric expansion valve is between 0～500 pulse or 0～2000 pulse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210320263.1A CN103673440A (en) | 2012-08-31 | 2012-08-31 | Refrigerated dryer with electronic bypass type energy adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210320263.1A CN103673440A (en) | 2012-08-31 | 2012-08-31 | Refrigerated dryer with electronic bypass type energy adjusting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103673440A true CN103673440A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210320263.1A Pending CN103673440A (en) | 2012-08-31 | 2012-08-31 | Refrigerated dryer with electronic bypass type energy adjusting function |
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| CN (1) | CN103673440A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729033A (en) * | 2015-04-03 | 2015-06-24 | 深圳麦克维尔空调有限公司 | Anti-freezing method and device for water chilling unit of air conditioning unit |
| CN108120227A (en) * | 2017-12-04 | 2018-06-05 | 珠海格力电器股份有限公司 | A kind of compressed air drying and water manufacturing system and method |
| CN108895697A (en) * | 2018-04-20 | 2018-11-27 | 合肥通用机械研究院有限公司 | A kind of compression condensation system of refrigerating capacity step-less adjustment |
| CN111256438A (en) * | 2020-01-17 | 2020-06-09 | 佛山市厦欣科技有限公司 | Working method of freezing type drying system with two-stage anti-icing and anti-blocking protection |
| CN113405324A (en) * | 2021-07-21 | 2021-09-17 | 广东葆德科技有限公司 | Low-pressure freeze dryer |
Citations (8)
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| JPH02279966A (en) * | 1989-04-21 | 1990-11-15 | Hitachi Ltd | Air conditioner |
| CN1298085A (en) * | 1999-11-24 | 2001-06-06 | 阿特拉斯-科帕科空中力量公司 | Equipment and method for cooling and drying |
| US6446446B1 (en) * | 2001-09-07 | 2002-09-10 | Advanced Thermal Sciences Corp. | Efficient cooling system and method |
| JP2003194459A (en) * | 2001-12-26 | 2003-07-09 | Kobe Steel Ltd | Freeze dryer |
| CN2656916Y (en) * | 2003-11-12 | 2004-11-17 | 卢顺从 | Two section low temp. dryer |
| KR100886887B1 (en) * | 2008-10-24 | 2009-03-05 | (주)동양테크놀로지 | Heat-pump type air-conditioner |
| CN201251348Y (en) * | 2008-08-11 | 2009-06-03 | 上海东富龙科技股份有限公司 | Vacuum freeze drier adopting vortex refrigerating system |
| CN202747710U (en) * | 2012-08-31 | 2013-02-20 | 上海瀚艺冷冻机械有限公司 | Refrigerated dryer with electronic by-pass energy regulation function |
-
2012
- 2012-08-31 CN CN201210320263.1A patent/CN103673440A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02279966A (en) * | 1989-04-21 | 1990-11-15 | Hitachi Ltd | Air conditioner |
| CN1298085A (en) * | 1999-11-24 | 2001-06-06 | 阿特拉斯-科帕科空中力量公司 | Equipment and method for cooling and drying |
| US6446446B1 (en) * | 2001-09-07 | 2002-09-10 | Advanced Thermal Sciences Corp. | Efficient cooling system and method |
| JP2003194459A (en) * | 2001-12-26 | 2003-07-09 | Kobe Steel Ltd | Freeze dryer |
| CN2656916Y (en) * | 2003-11-12 | 2004-11-17 | 卢顺从 | Two section low temp. dryer |
| CN201251348Y (en) * | 2008-08-11 | 2009-06-03 | 上海东富龙科技股份有限公司 | Vacuum freeze drier adopting vortex refrigerating system |
| KR100886887B1 (en) * | 2008-10-24 | 2009-03-05 | (주)동양테크놀로지 | Heat-pump type air-conditioner |
| CN202747710U (en) * | 2012-08-31 | 2013-02-20 | 上海瀚艺冷冻机械有限公司 | Refrigerated dryer with electronic by-pass energy regulation function |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729033A (en) * | 2015-04-03 | 2015-06-24 | 深圳麦克维尔空调有限公司 | Anti-freezing method and device for water chilling unit of air conditioning unit |
| CN104729033B (en) * | 2015-04-03 | 2018-07-10 | 深圳麦克维尔空调有限公司 | The antifreeze method and apparatus of the handpiece Water Chilling Units of air-conditioner set |
| CN108120227A (en) * | 2017-12-04 | 2018-06-05 | 珠海格力电器股份有限公司 | A kind of compressed air drying and water manufacturing system and method |
| CN108895697A (en) * | 2018-04-20 | 2018-11-27 | 合肥通用机械研究院有限公司 | A kind of compression condensation system of refrigerating capacity step-less adjustment |
| CN108895697B (en) * | 2018-04-20 | 2020-12-25 | 合肥通用机械研究院有限公司 | Compression condensing system with refrigeration capacity being adjusted steplessly |
| CN111256438A (en) * | 2020-01-17 | 2020-06-09 | 佛山市厦欣科技有限公司 | Working method of freezing type drying system with two-stage anti-icing and anti-blocking protection |
| CN111256438B (en) * | 2020-01-17 | 2021-06-18 | 佛山市厦欣科技有限公司 | Working method of freezing type drying system with two-stage anti-icing and anti-blocking protection |
| CN113405324A (en) * | 2021-07-21 | 2021-09-17 | 广东葆德科技有限公司 | Low-pressure freeze dryer |
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Application publication date: 20140326 |