CN201149399Y - Refrigeration and defrosting system - Google Patents
Refrigeration and defrosting system Download PDFInfo
- Publication number
- CN201149399Y CN201149399Y CNU2008201478701U CN200820147870U CN201149399Y CN 201149399 Y CN201149399 Y CN 201149399Y CN U2008201478701 U CNU2008201478701 U CN U2008201478701U CN 200820147870 U CN200820147870 U CN 200820147870U CN 201149399 Y CN201149399 Y CN 201149399Y
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- evaporimeter
- defrosting
- heat exchanger
- liquid
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Abstract
The utility model discloses a refrigerating and defrosting system which comprises a compressor, at least two evaporators and at least a heat exchanger. A condensing unit is connected with the compressor; a liquid reservoir is connected with the condensing unit; a high-pressure liquid distributor is connected with the liquid reservoir; the liquid inlet of each evaporator is connected with the high-pressure liquid distributor through a high-pressure refrigerating fluid stop valve, and is connected with a low-pressure liquid distributor through a low-pressure refrigerating fluid stop valve; the high-pressure liquid distributor is connected with the low-pressure liquid distributor through a refrigerating throttle device; the liquid outlet of each evaporator is connected with a liquid trap through a supercooled refrigerant stop valve, and is connected with an air reservoir through a return air stop valve; the inlet of each heat exchanger is connected with the liquid trap through a regulating valve and a defrosting throttle device, and the outlet of each heat exchanger is connected with a vapour liquid separator; the air reservoir is also connected with the vapour liquid separator; and the vapour liquid separator is connected with the compressor. The system has the advantages of simple and convenient operation, short defrosting time, high efficiency and low energy consumption.
Description
Technical field
The utility model belongs to refrigeration industry, relates in particular to a kind of refrigeration and defrosting system.
Background technology
Advantages such as vertical open type food refrigerated display cabinet is elegant in appearance with it, the shopping that makes things convenient for customers, the desire to purchase that has stimulated client has widely obtained in the supermarket using widely in recent years.But the open-type display case energy consumption is higher, has significantly reduced the profit of businessman; The chilled food temperature fluctuation is bigger, and fluctuating temperature can seriously threaten the quality of the food that displays between-1-16 ℃.
Along with the growing tension of the energy, energy-saving run has become big power consumer's important goal, and 60% electric energy is used for food refrigerated freezingly in the supermarket, and this wherein most of electric energy is by showcase consumption, and the showcase Study on Refrigeration System is just seemed particularly necessary.
General multi-compressor of display case evaporimeter and evaporimeter parallel running at present, the hot refrigerant vapor refrigerant defrosting, defrosting process refrigeration system is out of service, causes showcase air curtain effect of heat insulation sharply to descend, and causes the interior food temperature of cabinet to go up rapidly.Heat steam defrosting simultaneously is bigger to the evaporimeter thermal shock, causes the evaporimeter inner refrigerant to leak easily, and is difficult for after leaking finding.
Summary of the invention
The purpose of this utility model is to overcome the defective that existing refrigeration system and existing defrosting technology exist, and a kind of easy and simple to handle, the defrosting time is short, efficient is high, power consumption is few refrigeration and defrosting system are provided.
For achieving the above object, the utility model adopts following technical scheme: a kind of refrigeration and defrosting system, comprise compressor, evaporimeter and heat exchanger, evaporimeter is at least two, heat exchanger is at least one, the condensation unit links to each other with compressor, liquid reservoir links to each other with the condensation unit, the high pressure knockout links to each other with liquid reservoir, the inlet of each evaporimeter links to each other with the high pressure knockout by high pressure refrigerating fluid stop valve, the inlet of each evaporimeter also links to each other with the low pressure knockout by low pressure refrigerating fluid stop valve, the high pressure knockout also links to each other with the low pressure knockout by cooling throttling arrangement, the liquid outlet of each evaporimeter passed through cold cold-producing medium stop valve and linked to each other with the hydrops device, the liquid outlet of each evaporimeter also links to each other with reservoirs by the return-air stop valve, and the import of each heat exchanger links to each other with the hydrops device with throttling arrangement by control valve and defrosting, and the outlet of each heat exchanger links to each other with vapour liquid separator, reservoirs also links to each other with vapour liquid separator, and vapour liquid separator links to each other with compressor.
The temperature-sensitive bag is housed on the tube connector of reservoirs and vapour liquid separator, and the temperature-sensitive bag links to each other with cooling throttling arrangement.
On the connecting line of heat exchanger and vapour liquid separator temp probe is housed, temp probe links to each other with throttling arrangement with defrosting.
Also comprise device for drying and filtering, the import of device for drying and filtering links to each other with liquid reservoir, and the outlet of device for drying and filtering links to each other with high-pressure separator.
The utility model will be by the warm refrigerant fluid of condenser cooling, introduce in the evaporimeter that reaches the defrosting condition by valve conversion and to carry out defrosting, cryogenic high pressure after the defrosting is crossed cold cold-producing medium and is carried out entering after the throttling another group heat exchanger by throttling arrangement and freeze, to reach the purpose of increase system refrigerating capacity.Compare with known refrigeration defrosting technology, there be not extra dispelling the heat to refrigeration space in the utility model owing to adopt the method for defrosting in the warm refrigerant fluid, and cold excessively refrigerant liquid has increased the refrigerating capacity of refrigeration system after the defrosting.Known refrigeration system is in the defrosting process, and refrigeration system enters the defrosting operational mode, can not play the purpose of refrigeration.The utility model is in the defrosting process, and refrigeration system does not quit work, and the thawing of frost from inside to outside, causes that frost layer is very fast to be peeled off from evaporator coil, and defrosting speed is very fast.Native system is applicable to multi-evaporator and to the strict occasion of temperature control requirement.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
Refrigeration and defrosting system comprise compressor 1, evaporimeter and heat exchanger as shown in drawings, and evaporimeter is at least two, and heat exchanger is at least one, Z among the figure
1, Z
2Z
nBe evaporimeter, H
1, H
2H
mBe heat exchanger, condensation unit 4 links to each other with compressor 1, and liquid reservoir 5 links to each other with condensation unit 4, and high pressure knockout 7 links to each other evaporimeter Z by device for drying and filtering 3 with liquid reservoir 5
1Inlet by high pressure refrigerating fluid shutoff valve C
1Link to each other evaporimeter Z with high pressure knockout 7
2Inlet by high pressure refrigerating fluid shutoff valve C
2Link to each other with high pressure knockout 7, and the like, evaporimeter Z
nInlet by high pressure refrigerating fluid shutoff valve C
nLink to each other with high pressure knockout 7, high pressure knockout 7 also links to each other with low pressure knockout 2 by cooling throttling arrangement 8, evaporimeter Z
1Inlet also by low pressure refrigerating fluid stop valve D
1Link to each other evaporimeter Z with low pressure knockout 2
2Inlet also by low pressure refrigerating fluid stop valve D
2Link to each other with low pressure knockout 2, and the like, evaporimeter Z
nInlet also by low pressure refrigerating fluid stop valve D
nLink to each other evaporimeter Z with low pressure knockout 2
1Liquid outlet passed through cold cold-producing medium stop valve A
1Link to each other evaporimeter Z with hydrops device 13
2Liquid outlet passed through cold cold-producing medium stop valve A
2Link to each other with hydrops device 13, and the like, evaporimeter Z
nLiquid outlet passed through cold cold-producing medium stop valve A
nLink to each other evaporimeter Z with hydrops device 13
1Liquid outlet also by return-air stop valve B
1Link to each other evaporimeter Z with reservoirs 10
2Liquid outlet also by return-air stop valve B
2Link to each other evaporimeter Z with reservoirs 10
nLiquid outlet also by return-air stop valve B
nLink to each other heat exchanger H with reservoirs 10
1Import by control valve E
1And defrosting links to each other heat exchanger H with throttling arrangement 12 with hydrops device 13
2Import by control valve E
2Reach defrosting and link to each other with hydrops device 13 with throttling arrangement 12, and the like, heat exchanger H
mImport by control valve E
mAnd defrosting links to each other heat exchanger H with throttling arrangement 12 with hydrops device 13
1, H
2H
mOutlet link to each other with vapour liquid separator 9, reservoirs 10 also links to each other with vapour liquid separator 9, vapour liquid separator 9 links to each other with compressor 1.On the tube connector of reservoirs 10 and vapour liquid separator 9 temperature-sensitive bag 14 is housed, temperature-sensitive bag 14 links to each other with cooling throttling arrangement 8, controls the flow size of cooling throttling arrangement 8.At heat exchanger H
1With on the connecting line of vapour liquid separator 9 temp probe 15 is housed, temp probe 15 links to each other with throttling arrangement 12 with defrosting, the effect of temp probe 15 is control defrosting flow sizes with throttling arrangement 12.
Operation principle of the present utility model is: if evaporimeter Z
1Reach the defrosting condition and other evaporimeter Z
2, Z
3Z
nBe in the refrigerating state of operate as normal, warm highly pressurised liquid the high temperature and high pressure gas that comes out from compressor 1 is cooled to through condensation unit 4, pass through liquid reservoir 5, device for drying and filtering 3 dryings successively, liquid after drying enters high pressure knockout 7, at 7 place's high pressure knockouts refrigerant fluid is divided into two parts, a part is by needing the evaporimeter Z of defrosting
1Carry out defrosting, valve C
1Open valve C
2, C
3C
nClose, the refrigerant fluid of high pressure enters the evaporimeter Z that reaches the defrosting condition
1Carry out defrosting; Another part cold-producing medium carries out step-down, valve D by cooling throttling arrangement 8
1Close D
2, D
3D
nOpen, enter the evaporimeter Z of normal operation then
2, Z
3Z
nCarry out refrigerating operaton.
Mistake cold anticyclone after the defrosting is crossed cold refrigerant fluid successively by valve A
1, this moment valve A
2, A
3A
nClose, entered in the cold refrigerant recovering apparatus hydrops device 13, after defrosting was dammed with throttling arrangement 12, the m group heat exchanger that enters the back carried out cold recovery, and cold excessively refrigerant fluid has increased the refrigerating capacity of refrigeration system.
The cold-producing medium that enters normal refrigerating operaton evaporimeter is successively by valve B
2, B
3B
nEnter reservoirs, at this moment valve B
1Close, the cold-producing medium through cold recovery enters compressor 1 together after reservoirs 10 is collected and from heat exchanger, finishes a circulation.
Claims (4)
1, a kind of refrigeration and defrosting system, comprise compressor, evaporimeter and heat exchanger, it is characterized in that: evaporimeter is at least two, heat exchanger is at least one, the condensation unit links to each other with compressor, liquid reservoir links to each other with the condensation unit, the high pressure knockout links to each other with liquid reservoir, the inlet of each evaporimeter links to each other with the high pressure knockout by high pressure refrigerating fluid stop valve, the inlet of each evaporimeter also links to each other with the low pressure knockout by low pressure refrigerating fluid stop valve, the high pressure knockout also links to each other with the low pressure knockout by cooling throttling arrangement, the liquid outlet of each evaporimeter passed through cold cold-producing medium stop valve and linked to each other with the hydrops device, the liquid outlet of each evaporimeter also links to each other with reservoirs by the return-air stop valve, the import of each heat exchanger links to each other with the hydrops device with throttling arrangement by control valve and defrosting, the outlet of each heat exchanger links to each other with vapour liquid separator, and reservoirs also links to each other with vapour liquid separator, and vapour liquid separator links to each other with compressor.
2, refrigeration as claimed in claim 1 and defrosting system is characterized in that: the temperature-sensitive bag is housed on the tube connector of reservoirs and vapour liquid separator, and the temperature-sensitive bag links to each other with cooling throttling arrangement.
3, refrigeration as claimed in claim 1 or 2 and defrosting system is characterized in that: on the connecting line of heat exchanger and vapour liquid separator temp probe is housed, temp probe links to each other with throttling arrangement with defrosting.
4, refrigeration as claimed in claim 1 and defrosting system is characterized in that: also comprise device for drying and filtering, the import of device for drying and filtering links to each other with liquid reservoir, and the outlet of device for drying and filtering links to each other with high-pressure separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201478701U CN201149399Y (en) | 2008-07-08 | 2008-07-08 | Refrigeration and defrosting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201478701U CN201149399Y (en) | 2008-07-08 | 2008-07-08 | Refrigeration and defrosting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201149399Y true CN201149399Y (en) | 2008-11-12 |
Family
ID=40117170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201478701U Expired - Fee Related CN201149399Y (en) | 2008-07-08 | 2008-07-08 | Refrigeration and defrosting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201149399Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236150A (en) * | 2013-06-17 | 2014-12-24 | 青月村燊股份有限公司 | Structure of freezer |
| CN104930791A (en) * | 2014-03-21 | 2015-09-23 | 青月村燊股份有限公司 | Multifunctional refrigerating machine |
| CN111536725A (en) * | 2020-05-26 | 2020-08-14 | 广东省现代农业装备研究所 | Defrosting method and device for evaporating defrosting refrigerant by using special evaporator |
| CN111536723A (en) * | 2020-05-26 | 2020-08-14 | 广东省现代农业装备研究所 | Defrosting method and device for secondary condensation and supercooling of main path refrigerant |
| CN111536720A (en) * | 2020-05-26 | 2020-08-14 | 广东省现代农业装备研究所 | Defrosting method and device adopting secondary condensation of refrigerant |
| CN111536724A (en) * | 2020-05-26 | 2020-08-14 | 广东省现代农业装备研究所 | Defrosting method and device for supercooling main pipeline refrigerant by using defrosting medium |
| CN115046324A (en) * | 2022-01-24 | 2022-09-13 | 河南牧业经济学院 | Refrigerating system and circulating defrosting method of evaporator |
-
2008
- 2008-07-08 CN CNU2008201478701U patent/CN201149399Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236150A (en) * | 2013-06-17 | 2014-12-24 | 青月村燊股份有限公司 | Structure of freezer |
| CN104930791A (en) * | 2014-03-21 | 2015-09-23 | 青月村燊股份有限公司 | Multifunctional refrigerating machine |
| CN104930791B (en) * | 2014-03-21 | 2017-03-01 | 青月村燊股份有限公司 | A kind of Multi-function freezer |
| CN111536725A (en) * | 2020-05-26 | 2020-08-14 | 广东省现代农业装备研究所 | Defrosting method and device for evaporating defrosting refrigerant by using special evaporator |
| CN111536723A (en) * | 2020-05-26 | 2020-08-14 | 广东省现代农业装备研究所 | Defrosting method and device for secondary condensation and supercooling of main path refrigerant |
| CN111536720A (en) * | 2020-05-26 | 2020-08-14 | 广东省现代农业装备研究所 | Defrosting method and device adopting secondary condensation of refrigerant |
| CN111536724A (en) * | 2020-05-26 | 2020-08-14 | 广东省现代农业装备研究所 | Defrosting method and device for supercooling main pipeline refrigerant by using defrosting medium |
| CN115046324A (en) * | 2022-01-24 | 2022-09-13 | 河南牧业经济学院 | Refrigerating system and circulating defrosting method of evaporator |
| CN115046324B (en) * | 2022-01-24 | 2023-08-22 | 河南牧业经济学院 | Refrigeration system and evaporator circulating defrosting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20081112 Termination date: 20150708 |
|
| EXPY | Termination of patent right or utility model |