CN106382776A - Hot air defrosting refrigerating system without defrosting compressor - Google Patents
Hot air defrosting refrigerating system without defrosting compressor Download PDFInfo
- Publication number
- CN106382776A CN106382776A CN201610995605.8A CN201610995605A CN106382776A CN 106382776 A CN106382776 A CN 106382776A CN 201610995605 A CN201610995605 A CN 201610995605A CN 106382776 A CN106382776 A CN 106382776A
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- China
- Prior art keywords
- defrosting
- steam generator
- valve
- compressor
- hot gas
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention belongs to a hot air defrosting refrigerating system without a defrosting compressor and aims at solving the problems that in the background art, hot air defrosting cannot be conducted if a defrosting compressor is not additionally arranged, the defrosting compressor is arranged, consequently, cost is increased, the utilization rate is not high, and hot air defrosting is not easy to conduct in a system with a small number of evaporators. The adopted technical scheme for solving the technical problems is characterized in that a steam generator port E sequentially passes a hot air valve, an evaporator, a defrosting liquid return valve and a steam generator port F through a pipeline, the evaporator is higher than the defrosting liquid return valve, the defrosting liquid return valve is higher than a steam generator, and a heating device is arranged on the steam generator. The hot air defrosting refrigerating system is suitable for a refrigerating system.
Description
Technical field：The invention belongs to Refrigeration Technique, specifically a kind of hot gas defrosting system without defrosting compressor
Cooling system.
Background technology：Existing refrigeration system, the defrosting of evaporimeter has hot gas defrosting, electrical heating defrosting, water（Salt solution）Defrosting
Deng various ways, hot gas defrosting is that in several ways, effect is best, energy-conservation.It is typically arranged with defrosting in defrosting system by superheated vapour
Compressor, provides hot gas to enter evaporimeter and carries out defrosting.But there is no the refrigeration system of defrosting compressor, such as CO2 refrigerating
In agent system, cannot be carried out hot gas defrosting if in addition defrosting compressor not being set, defrosting compressor is set, and existing increases into
This, utilization rate high the problems such as.In the system of evaporimeter negligible amounts, due to compressor air suction ability and defrosting ability not
Join, be not easy to carry out hot gas defrosting.
Content of the invention：The purpose of the present invention is exactly to propose a kind of hot gas defrosting refrigeration system without defrosting compressor, with
Solve background technology to exist：In addition setting defrosting compressor just not cannot be carried out hot gas defrosting, arranges defrosting compressor, there is increasing
Addition basis, utilization rate be not high；In the system of evaporimeter negligible amounts, it is not easy to the problems such as carry out hot gas defrosting.Solve this technology
Problem be employed technical scheme comprise that：The first scheme：A kind of hot gas defrosting refrigeration system without defrosting compressor, wherein makes
When cold, flow process is：Refrigerant feed liquid mouth D sequentially passes through supplying valve, evaporimeter, return-air valve, cold-producing medium gas returning port C by pipeline；Its
It is characterised by that during hot gas defrosting, flow process is：Steam generator E mouth sequentially passes through hot-blast valve by pipeline, liquid is returned in evaporimeter, defrosting
Valve, steam generator F mouth, evaporimeter returns liquid valve higher than defrosting, and it is higher than steam generator that liquid valve is returned in defrosting, and steam generator is provided with
Heater.
Second scheme：A kind of hot gas defrosting refrigeration system without defrosting compressor, when wherein freezing, flow process is：Refrigeration
Agent supply opening D sequentially passes through supplying valve, evaporimeter, return-air valve, cold-producing medium gas returning port C by pipeline；It is characterized in that hot gas melts
When white, flow process is：Steam generator E mouth sequentially passes through hot-blast valve by pipeline, liquid valve, defrosting liquid return hole B are returned in evaporimeter, defrosting,
Steam generator is provided with heater.
In two above scheme, the quantity of evaporimeter can be 1 or multiple stage.It is provided with steam generator
Pressure control device, fluid level control device and filling opening.Wherein, the E mouth of steam generator is located at gas phase zone, steam generator
F mouth is located at liquid phase region or gas phase zone.Refrigerant feed liquid mouth D connects the refrigeration liquid feeding pipeline from refrigeration system.Cold-producing medium gas returning port C connects
Enter the relatively low refrigeration system pipeline of pressure.The relatively low refrigeration system pipeline of defrosting liquid return hole B cut-in pressure.
The present invention is had an advantageous effect in that compared with the prior art：Using technique scheme, during hot gas defrosting, plus
Thermal heats the liquid refrigerant in steam generator, partially liq refrigerant vapor, pressure rise in steam generator.Steam
Liquid refrigerant in vapour generator come flash-pot fall liquid or refrigeration system is added by steam generator filling opening.
In steam generator, liquid level is by fluid level control device control.In steam generator, pressure is by pressure control device control.Open heat
Air valve, in steam generator, steam enters evaporator condensation, and condenser heat passes to the frost outside evaporimeter.The liquid of condensation relies on
Gravity returns liquid valve by defrosting and falls into steam generator, forms circulation.The liquid of condensation or dependence pressure differential pass through defrosting
Liquid return hole B enters the relatively low refrigeration system pipeline of pressure.Cold-producing medium, as the medium of heat transfer, absorbs in steam generator
Heat of vaporization, releases heat condensation in evaporimeter, reaches the mesh not using defrosting compressor can make evaporimeter hot gas defrosting
's.
Brief description：Fig. 1 is the schematic diagram of the first scheme of the present invention.Fig. 2 is the schematic diagram of second scheme of the present invention.
Specific embodiment：
Embodiment 1：With reference to Fig. 1, a kind of hot gas defrosting refrigeration system without defrosting compressor, when wherein freezing, flow process is：System
Cryogen supply opening D sequentially passes through supplying valve 4, evaporimeter 5, return-air valve 1, cold-producing medium gas returning port C by pipeline；It is characterized in that it is hot
During gas defrosting, flow process is：Steam generator 6E mouth sequentially passes through hot-blast valve 2 by pipeline, liquid valve 3, steam are returned in evaporimeter 5, defrosting
Generator 6F mouth；Evaporimeter 5 returns liquid valve 3 higher than defrosting, and it is higher than steam generator 6 that liquid valve 3 is returned in defrosting；Steam generator 6 is provided with
Heater；The quantity of evaporimeter 5 can be 1 or multiple stage；Be provided with steam generator 6 pressure control device,
Fluid level control device and filling opening.
Embodiment 2：With reference to Fig. 2, a kind of hot gas defrosting refrigeration system without defrosting compressor, flow process when wherein freezing
It is：Refrigerant feed liquid mouth D sequentially passes through supplying valve 4, evaporimeter 5, return-air valve 1, cold-producing medium gas returning port C by pipeline；Its feature
It is that during hot gas defrosting, flow process is：Steam generator 6E mouth sequentially passes through hot-blast valve 2 by pipeline, liquid valve is returned in evaporimeter 5, defrosting
3rd, defrosting liquid return hole B；Steam generator 6 is provided with heater；The quantity of evaporimeter 5 can be 1 or multiple stage；Steam
Pressure control device, fluid level control device and filling opening are provided with vapour generator 6.
Claims (5)
1. a kind of hot gas defrosting refrigeration system without defrosting compressor, when wherein freezing, flow process is：Refrigerant feed liquid mouth D passes through
Pipeline sequentially passes through supplying valve（4）, evaporimeter（5）, return-air valve（1）, cold-producing medium gas returning port C；It is characterized in that during hot gas defrosting
Flow process is：Steam generator（6）E mouth sequentially passes through hot-blast valve by pipeline（2）, evaporimeter（5）, defrosting return liquid valve（3）, steam
Generator（6）F mouth, evaporimeter（5）Return liquid valve higher than defrosting（3）, defrosting returns liquid valve（3）Higher than steam generator（6）, steam sends out
Raw device（6）It is provided with heater.
2. a kind of hot gas defrosting refrigeration system without defrosting compressor, when wherein freezing, flow process is：Refrigerant feed liquid mouth D passes through
Pipeline sequentially passes through supplying valve（4）, evaporimeter（5）, return-air valve（1）, cold-producing medium gas returning port C；It is characterized in that during hot gas defrosting
Flow process is：Steam generator（6）E mouth sequentially passes through hot-blast valve by pipeline（2）, evaporimeter（5）, defrosting return liquid valve（3）, defrosting
Liquid return hole B, steam generator（6）It is provided with heater.
3. a kind of hot gas defrosting refrigeration system without defrosting compressor according to claim 1 or claim 2 is it is characterised in that evaporate
Device（5）Quantity can be 1 or multiple stage.
4. a kind of hot gas defrosting refrigeration system without defrosting compressor according to claim 1 or claim 2 is it is characterised in that steam
Generator（6）On be provided with pressure control device, fluid level control device and filling opening.
5. according to claim 3 a kind of hot gas defrosting refrigeration system without defrosting compressor it is characterised in that steam is sent out
Raw device（6）On be provided with pressure control device, fluid level control device and filling opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610995605.8A CN106382776A (en) | 2016-11-12 | 2016-11-12 | Hot air defrosting refrigerating system without defrosting compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610995605.8A CN106382776A (en) | 2016-11-12 | 2016-11-12 | Hot air defrosting refrigerating system without defrosting compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106382776A true CN106382776A (en) | 2017-02-08 |
Family
ID=57958517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610995605.8A Withdrawn CN106382776A (en) | 2016-11-12 | 2016-11-12 | Hot air defrosting refrigerating system without defrosting compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106382776A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800726A (en) * | 2018-06-25 | 2018-11-13 | 袁军 | A kind of dehumidifying and defrosting method and system |
-
2016
- 2016-11-12 CN CN201610995605.8A patent/CN106382776A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800726A (en) * | 2018-06-25 | 2018-11-13 | 袁军 | A kind of dehumidifying and defrosting method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170208 |