CN107782030A - A kind of load down cold insulation defrosting system by superheated vapour and refrigeration plant - Google Patents
A kind of load down cold insulation defrosting system by superheated vapour and refrigeration plant Download PDFInfo
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- CN107782030A CN107782030A CN201710996464.6A CN201710996464A CN107782030A CN 107782030 A CN107782030 A CN 107782030A CN 201710996464 A CN201710996464 A CN 201710996464A CN 107782030 A CN107782030 A CN 107782030A
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- pipe
- mouth
- cold insulation
- valve
- way reversing
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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
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
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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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0234—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements
- F25B2313/02341—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements during cooling
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
- F25B2347/021—Alternate defrosting
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0403—Refrigeration circuit bypassing means for the condenser
Abstract
The invention provides a kind of load down cold insulation defrosting system by superheated vapour and refrigeration plant, defrosting system includes compressor and four-way reversing valve, and four-way reversing valve includes first mouth of pipe, second mouth of pipe, the 3rd mouth of pipe and the 4th mouth of pipe.Compressor outlet pipeline is divided into the first pipeline and the second pipeline, it is connected with the first single-pass magnetic valve, condenser, throttling arrangement and check valve in first pipeline in turn, the second single-pass magnetic valve is connected with second pipeline, check valve and the second single-pass magnetic valve are connected with first mouth of pipe, 3rd mouth of pipe is connected with the gas returning port of compressor, and the 4th mouth of pipe is connected by evaporator combinations part with second mouth of pipe；Load down cold insulation defrosting system by superheated vapour is divided into the first refrigeration work state and the second refrigeration work state when working, and the second refrigeration work state includes positive defrost cold insulation and reverse defrost cold insulation.The present invention can realize holding box house subregional refrigerating function while utilize high-temperature gas defrosting, freeze in defrosting, and completion Cooling and Heat Source utilizes simultaneously.
Description
Technical field
The present invention relates to art of refrigeration units, and in particular to a kind of load down cold insulation defrosting system by superheated vapour and refrigeration plant.
Background technology
Refrigerator, refrigerator class product in the market all realizes defrosting function using electrically heated mode.Do not use
The reason for hot gas defrosting, is mainly ineffective or can not solve the problems, such as overload of compressor, and its principle is：Pass through side during defrosting
Siphunculus road accesses exhaust outlet of compressor in evaporator (or defrost pipe), impacts pipeline defrost by high-temperature gas, afterwards high temperature system
Refrigerant vapour mixes unnecessary refrigerant liquid and is returned directly to by return line in compressor, high evaporating temperature work now
Condition makes the running current of compressor be far longer than its design requirement, caused in the short time overheat, overload protection and shut down can not
Ensure defrost effect, while overload operation also increases the power consumption of system, excessive refrigerant liquid easily makes in addition
Exhaust valve plate liquid hazards cause compressor to scrap.Correlation is also carried out for the company in some product scopes of problem above to grind
Study carefully, such as refrigerant liquid unnecessary in evaporator is drawn into storage to strengthen the effect of defrosting in evaporator, prevent compressor
Liquid hammer, though such scheme can improve reliability but larger load increase power consumption can be caused to press.Both the above is normal
Square case has a common ground when being hot gas defrosting, and product must bypass stopping refrigerating function, while the high temperature refrigerant of evaporator
The temperature inside the box is directly enhanced, is unfavorable for the preservation of case internal memory storing.
The content of the invention
The problem of compressor load is big during for existing refrigeration system defrosting, the first object of the present invention there is provided one
Kind load down cold insulation defrosting system by superheated vapour, box portion region refrigeration is kept while defrosting.
The present invention uses following technical scheme：
A kind of load down cold insulation defrosting system by superheated vapour, including compressor and four-way reversing valve, four-way reversing valve include first
The mouth of pipe, second mouth of pipe, the 3rd mouth of pipe and the 4th mouth of pipe；
The compressor outlet pipeline is divided into the first pipeline and the second pipeline, and first is connected with turn in first pipeline
Single-pass magnetic valve, condenser, throttling arrangement and check valve, the second single-pass magnetic valve, the check valve are connected with the second pipeline
It is connected with the second single-pass magnetic valve with first mouth of pipe；
3rd mouth of pipe is connected with the gas returning port of compressor；
4th mouth of pipe is connected by evaporator combinations part with second mouth of pipe；
Load down cold insulation defrosting system by superheated vapour is divided into the first refrigeration work state and the second refrigeration work state when working, the
Two refrigeration work states include positive defrost cold insulation and reverse defrost cold insulation.
Preferably, the evaporator combinations part includes the first stage evaporation device, and the first stage evaporation device is connected with inside
Throttling arrangement, the 3rd single-pass magnetic valve is parallel with internal restriction device, internal restriction device is connected with the second stage evaporation device；
Wherein, the 4th mouth of pipe is connected with the first stage evaporation device, and the second stage evaporation device is connected with second mouth of pipe.
Preferably, in the first refrigeration work state, the first single-pass magnetic valve and the 3rd single-pass magnetic valve are both turned on, and second
Single-pass closed electromagnetic valve, four-way reversing valve no power.
Preferably, in the second refrigeration work state, the first single-pass magnetic valve and the 3rd single-pass magnetic valve are turned off, and second
Single-pass solenoid valve conduction, wherein, during positive defrost cold insulation, four-way reversing valve no power, during reverse defrost cold insulation, four-way reversing valve
It is powered.
Preferably, in the first refrigeration work state, the high-temperature high-pressure refrigerant steam of compressor discharge is single by first
Three-way electromagnetic valve enters condenser, is condensed into refrigerant liquid within the condenser, then be changed into low-temp low-pressure refrigeration by throttling arrangement
After agent liquid, four-way reversing valve is entered by first mouth of pipe after check valve, flowed out afterwards from the 4th mouth of pipe, successively by first
Segmented evaporator, the 3rd single-pass magnetic valve, the second segmented evaporator, second mouth of pipe are flowed into four-way reversing valve, then passed through
3rd mouth of pipe is flowed out in compressor.
Preferably, in positive defrost cold insulation, the high-temperature high-pressure refrigerant steam of compressor discharge passes through the second single-pass electricity
Magnet valve enters four-way reversing valve, is flowed out afterwards from the 4th mouth of pipe, by the first segmented evaporator, the first segmented evaporator energy
Defrosted and as condenser, then by built-in throttling arrangement, after being changed into low-temperature low-pressure refrigerant liquid, into the second segmentation
Formula evaporator, the second segmented evaporator freeze to article, after through second mouth of pipe flow into four-way reversing valve in, most pass through afterwards
The 3rd mouth of pipe is crossed to be back in compressor.
Preferably, in reverse defrost cold insulation, the high-temperature high-pressure refrigerant steam of compressor discharge passes through the second single-pass electricity
Magnet valve enters four-way reversing valve, is flowed out afterwards from second mouth of pipe, by the second segmented evaporator, the second segmented evaporator energy
Defrosted and as condenser, then by built-in throttling arrangement, after being changed into low-temperature low-pressure refrigerant liquid, into the first segmentation
Formula evaporator, the first segmented evaporator freeze to article, after through the 4th mouth of pipe flow into four-way reversing valve in, most pass through afterwards
The 3rd mouth of pipe is crossed to be back in compressor.
Preferably, the throttling arrangement is capillary.
The second object of the present invention there is provided a kind of refrigeration plant.
A kind of refrigeration plant, above-described load down cold insulation defrosting system by superheated vapour is housed in the refrigeration plant.
The invention has the advantages that：
Load down cold insulation defrosting system by superheated vapour provided by the invention, in the second refrigeration work state, it can realize using high
Box house subregional refrigerating function is kept while wet body defrosting, defrosting is carried out, freezed in defrosting simultaneously with refrigeration,
Complete Cooling and Heat Source to utilize simultaneously, the shortcomings that avoiding conventional defrosting system by superheated vapour load height unstable and greatly improve system
Operational efficiency, avoid refrigeration product internal temperature wide fluctuations so that the temperature inside the box stabilizing energy-saving positive effect.
Brief description of the drawings
Fig. 1 is structural representation of the load down cold insulation defrosting system by superheated vapour in the first refrigeration work state.
Fig. 2 is structural representation of the load down cold insulation defrosting system by superheated vapour in positive defrost cold insulation.
Fig. 3 is structural representation of the load down cold insulation defrosting system by superheated vapour in reverse defrost cold insulation.
Embodiment
The embodiment of the present invention is described further with specific embodiment below in conjunction with the accompanying drawings：
Embodiment 1
With reference to Fig. 1 to Fig. 3, a kind of load down cold insulation defrosting system by superheated vapour, including compressor 1 and four-way reversing valve 6, four-way
Reversal valve includes first mouth of pipe 61, second mouth of pipe 62, the 3rd mouth of pipe 63 and the 4th mouth of pipe 64.
The export pipeline of compressor 1 is divided into the first pipeline and the second pipeline, wherein, it is single to be connected with first in the first pipeline in turn
Three-way electromagnetic valve 2, condenser 3, throttling arrangement 4 and check valve 5, throttling arrangement are capillary；It is single that second is connected with second pipeline
Three-way electromagnetic valve 10, the single-pass magnetic valve 10 of check valve 5 and second are connected with first mouth of pipe 61.
3rd mouth of pipe 63 is connected with the gas returning port of compressor.
4th mouth of pipe 64 is connected by evaporator combinations part with second mouth of pipe 62, and evaporator combinations part includes first point
Section evaporator 7, the first stage evaporation device are connected with internal restriction device 11, and internal restriction device 11 is capillary, internal restriction
The 3rd single-pass magnetic valve 8 is parallel with device 11, internal restriction device 11 is connected with the second stage evaporation device 9.
Wherein, the 4th mouth of pipe 64 is connected with the first stage evaporation device 7, and the second stage evaporation device 9 is connected with second mouth of pipe 62.
Load down cold insulation defrosting system by superheated vapour is divided into the first refrigeration work state and the second refrigeration work state when working, the
Two refrigeration work states include positive defrost cold insulation and reverse defrost cold insulation.
Wherein, in the first refrigeration work state, the first single-pass magnetic valve 2 and the 3rd single-pass magnetic valve 8 are both turned on, and second
Single-pass magnetic valve 10 is closed, the no power of four-way reversing valve 6, and the control valve in four-way reversing valve 6 is in release conditions.
As shown in figure 1, in the first refrigeration work state, high-temperature high-pressure refrigerant steam that compressor 1 is discharged passes through the
One single-pass magnetic valve 2 enters condenser 3, is outwardly radiated in the refrigerant vapour of the high temperature high pressure of condenser 3, is condensed into system
Cryogen liquid, then after throttling arrangement 4 turns into low-temperature low-pressure refrigerant liquid, entered after check valve 5 by first mouth of pipe 61
Enter four-way reversing valve 6, flowed out afterwards from the 4th mouth of pipe 64, successively by the first segmented evaporator 7, the 3rd single-pass magnetic valve 8,
Second segmented evaporator 9, second mouth of pipe 62 are flowed into four-way reversing valve, then flowed out to by the 3rd mouth of pipe 63 in compressor 1.
Under the first refrigeration work state, the first segmented evaporator 7 and the series connection of the second segmented evaporator 9 are whole for one
Evaporator combinations, both are article refrigeration, and the first refrigeration work state is kind of refrigeration cycle.
In the second refrigeration work state, the first single-pass magnetic valve 2 and the 3rd single-pass magnetic valve 8 are turned off, the second single-pass
Magnetic valve 10 turns on, wherein, during positive defrost cold insulation, four-way reversing valve no power；During reverse defrost cold insulation, four-way reversing valve leads to
Electricity, the control valve movement in four-way reversing valve 6, changes the flow direction in four-way reversing valve.
As shown in Fig. 2 in positive defrost cold insulation, the high-temperature high-pressure refrigerant steam that compressor 1 is discharged is single by second
Three-way electromagnetic valve 10 enters four-way reversing valve 6, is flowed out afterwards from the 4th mouth of pipe 64, by the first segmented evaporator 7, the first segmentation
Formula evaporator 7 now plays dual parts of defrosting and is used as condenser, then passes through 11 devices of built-in throttling, is changed into low-temp low-pressure
After refrigerant liquid, into the second segmented evaporator 9, the second segmented evaporator can now freeze to article, afterwards
Flow into four-way reversing valve through second mouth of pipe 62, be finally back to by the 3rd mouth of pipe 63 in compressor 1, be ensure that in the second system
The function of load down and cold insulation is played during cold working condition.
First segmented evaporator 7 has different defrosting contents in direct-cooled and air-cooled product：First in direct-cooled system
Stage evaporation device 7 is pasted onto on the outside of wall of inner container, and the frost layer that high-temperature gas is transferred heat on the inside of wall of inner container in its pipeline makes
It melts, and defrosting water is discharged to outside casing by drainage system；The first stage evaporation device 7 is finned evaporation in air cooling system
The flow all the way of certain in device, high-temperature gas directly melts the frost layer on pipeline and its associated fins in pipe, and defrosting water passes through evaporation
The water spilage tray of device bottom is discharged to outside casing.First stage evaporation device 7 is high by the high temperature in pipe while defrosting function is played
Compression refrigerant steam, which is condensed into refrigerant liquid and is changed into the refrigerant liquid of low-temp low-pressure after internal restriction device 11, enters the
Evaporation endothermic freezes to not defrosting position in casing in two-section evaporator 9.
The refrigerant vapour of low-temp low-pressure after evaporation is back to and the work done during compression of compressor is reduced in compressor 1 prevents pair
The overload impact of compressor, not only avoiding overload of compressor overtemperature protection realizes the purpose of load down while maintains system
Stability ensures the effect of hot gas defrosting, and the evaporation of being absorbed heat in the second stage evaporation device 9 of another aspect low-temperature refrigerant liquid makes
Obtain not defrosting part in case to can continue to freeze, article temperature residing for guarantee does not go up to realize the purpose of cold insulation.
As shown in figure 3, in reverse defrost cold insulation, the high-temperature high-pressure refrigerant steam that compressor 1 is discharged is single by second
Three-way electromagnetic valve 10 enters four-way reversing valve 6, is flowed out afterwards from second mouth of pipe 62, by the second segmented evaporator 9, the second segmentation
Formula evaporator plays dual parts of the condenser that defrosts and be used as, then by built-in throttling arrangement 11, is changed into low-temp low-pressure refrigeration
After agent liquid, into the first segmented evaporator 7, the first segmented evaporator 7 can freeze to article, after through the 4th pipe
Mouth 64 is flowed into four-way reversing valves, is finally back to by the 3rd mouth of pipe 63 in compressor.
By it is described above we can show that the principle of reverse defrost cold insulation is identical with the principle of positive defrost cold insulation, just
It is that the region of the first segmented evaporator 7 carries out defrosting to defrost cold insulation, the region of the second segmented evaporator 9 is freezed；Reversely
Defrost cold insulation is that the region of the second segmented evaporator 9 carries out defrosting, and the region of the first segmented evaporator 7 freezed, whole the
The operation principle of two refrigeration work states is exactly defrost, the conversion for freezing region, realizes region-wide defrost cold insulation.
Embodiment 2
A kind of refrigeration plant, equipped with the load down cold insulation defrosting system by superheated vapour described in above example in refrigeration plant.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made in the essential scope of the present invention, it should also belong to the present invention's
Protection domain.
Claims (9)
1. a kind of load down cold insulation defrosting system by superheated vapour, it is characterised in that including compressor and four-way reversing valve, four-way reversing valve
Including first mouth of pipe, second mouth of pipe, the 3rd mouth of pipe and the 4th mouth of pipe；
The compressor outlet pipeline is divided into the first pipeline and the second pipeline, and the first single-pass is connected with turn in first pipeline
Magnetic valve, condenser, throttling arrangement and check valve, the second single-pass magnetic valve, the check valve and are connected with the second pipeline
Two single-pass magnetic valves are connected with first mouth of pipe；
3rd mouth of pipe is connected with the gas returning port of compressor；
4th mouth of pipe is connected by evaporator combinations part with second mouth of pipe；
Load down cold insulation defrosting system by superheated vapour is divided into the first refrigeration work state and the second refrigeration work state, the second system when working
Cold working condition includes positive defrost cold insulation and reverse defrost cold insulation.
A kind of 2. load down cold insulation defrosting system by superheated vapour according to claim 1, it is characterised in that the evaporator combinations
Part includes the first stage evaporation device, and the first stage evaporation device is connected with internal restriction device, is parallel with internal restriction device
3rd single-pass magnetic valve, internal restriction device are connected with the second stage evaporation device；Wherein, the 4th mouth of pipe and the first stage evaporation device
It is connected, the second stage evaporation device is connected with second mouth of pipe.
3. a kind of load down cold insulation defrosting system by superheated vapour according to claim 2, it is characterised in that in the first refrigeration work
During state, the first single-pass magnetic valve and the 3rd single-pass magnetic valve are both turned on, the second single-pass closed electromagnetic valve, and four-way reversing valve is obstructed
Electricity.
4. a kind of load down cold insulation defrosting system by superheated vapour according to claim 2, it is characterised in that in the second refrigeration work
During state, the first single-pass magnetic valve and the 3rd single-pass magnetic valve are turned off, the second single-pass solenoid valve conduction, wherein, positive defrost
During cold insulation, four-way reversing valve no power, during reverse defrost cold insulation, four-way reversing valve is powered.
5. a kind of load down cold insulation defrosting system by superheated vapour according to claim 3, it is characterised in that in the first refrigeration work
During state, the high-temperature high-pressure refrigerant steam of compressor discharge enters condenser by the first single-pass magnetic valve, within the condenser
Refrigerant liquid is condensed into, then after throttling arrangement is changed into low-temperature low-pressure refrigerant liquid, passes through the first pipe after check valve
Mouthful enter four-way reversing valve, afterwards from the outflow of the 4th mouth of pipe, successively by the first segmented evaporator, the 3rd single-pass magnetic valve,
Second segmented evaporator, second mouth of pipe are flowed into four-way reversing valve, then flowed out to by the 3rd mouth of pipe in compressor.
6. a kind of load down cold insulation defrosting system by superheated vapour according to claim 4, it is characterised in that in positive defrost cold insulation
When, the high-temperature high-pressure refrigerant steam of compressor discharge enters four-way reversing valve by the second single-pass magnetic valve, afterwards from the 4th
The mouth of pipe is flowed out, and by the first segmented evaporator, the first segmented evaporator can be defrosted and as condenser, then by interior
Throttling arrangement is put, after being changed into low-temperature low-pressure refrigerant liquid, into the second segmented evaporator, the second segmented evaporator is to thing
Product are freezed, after through second mouth of pipe flow into four-way reversing valve in, be finally back to by the 3rd mouth of pipe in compressor.
7. a kind of load down cold insulation defrosting system by superheated vapour according to claim 4, it is characterised in that in reverse defrost cold insulation
When, the high-temperature high-pressure refrigerant steam of compressor discharge enters four-way reversing valve by the second single-pass magnetic valve, afterwards from second
The mouth of pipe is flowed out, and by the second segmented evaporator, the second segmented evaporator can be defrosted and as condenser, then by interior
Throttling arrangement is put, after being changed into low-temperature low-pressure refrigerant liquid, into the first segmented evaporator, the first segmented evaporator is to thing
Product are freezed, after through the 4th mouth of pipe flow into four-way reversing valve in, be finally back to by the 3rd mouth of pipe in compressor.
8. a kind of load down cold insulation defrosting system by superheated vapour according to claim 1, it is characterised in that the throttling arrangement is
Capillary.
9. a kind of refrigeration plant, it is characterised in that born in the refrigeration plant equipped with the drop described in any one of claim 1 to 8
Lotus cold insulation defrosting system by superheated vapour.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710996464.6A CN107782030A (en) | 2017-10-24 | 2017-10-24 | A kind of load down cold insulation defrosting system by superheated vapour and refrigeration plant |
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| CN201710996464.6A CN107782030A (en) | 2017-10-24 | 2017-10-24 | A kind of load down cold insulation defrosting system by superheated vapour and refrigeration plant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800355A (en) * | 2018-06-25 | 2018-11-13 | 袁军 | A kind of air conditioning method and system |
| CN112254408A (en) * | 2020-11-02 | 2021-01-22 | 中山市越海电器有限公司 | Uninterrupted refrigeration hot-gas defrosting low-temperature cabinet |
| CN113669938A (en) * | 2021-07-27 | 2021-11-19 | 澳柯玛股份有限公司 | Refrigerator refrigeration and self-cleaning control method |
| WO2023273706A1 (en) * | 2021-06-29 | 2023-01-05 | 青岛海尔电冰箱有限公司 | Refrigerating and freezing apparatus |
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| CN201314724Y (en) * | 2008-10-10 | 2009-09-23 | 北京盈金时代科技有限公司 | Non-temperature rise manifold type internal heat defrosting energy saving refrigeration system |
| CN101382351A (en) * | 2008-10-21 | 2009-03-11 | 中南大学 | Air source heat pump air conditioner and defrosting method thereof |
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| CN112254408A (en) * | 2020-11-02 | 2021-01-22 | 中山市越海电器有限公司 | Uninterrupted refrigeration hot-gas defrosting low-temperature cabinet |
| WO2023273706A1 (en) * | 2021-06-29 | 2023-01-05 | 青岛海尔电冰箱有限公司 | Refrigerating and freezing apparatus |
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