CN205784073U - Hot gas defrosting device for cold storage refrigerating system - Google Patents
Hot gas defrosting device for cold storage refrigerating system Download PDFInfo
- Publication number
- CN205784073U CN205784073U CN201620482868.4U CN201620482868U CN205784073U CN 205784073 U CN205784073 U CN 205784073U CN 201620482868 U CN201620482868 U CN 201620482868U CN 205784073 U CN205784073 U CN 205784073U
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- cooling air
- piston compressor
- air evaporator
- hot gas
- cocurrent flow
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Abstract
The utility model discloses a kind of hot gas defrosting device for cold storage refrigerating system, including piston compressor, pipe type cooling air evaporator, liquid reservoir, cocurrent flow type condenser, the outfan of described pipe type cooling air evaporator passes sequentially through suction filter, vapour liquid separator and oil water separator are connected with piston compressor, the other end of described piston compressor is connected with cocurrent flow type condenser, cocurrent flow type condenser is connected with the entrance of liquid reservoir, the outlet of liquid reservoir forms loop by the input of Filter dryer connecting tube chip cooling air evaporator, it is sequentially provided with liquid supply electromagnetic valve and heating power expansion valve between described Filter dryer and pipe type cooling air evaporator, the two ends of described piston compressor are provided with air pressure induction type pressure controller；Simple in construction, defrosting effect is more preferably.
Description
Technical field
This utility model relates to the technical field of refrigeration equipment of freezer, is specifically related to a kind of hot gas defrosting device for cold storage refrigerating system.
Background technology
Due to evaporator surface frosting in freezer, hinder the conduction of refrigerating evaporator cold and distribute, finally affect refrigeration.When the frost thickness of evaporator surface reaches to a certain degree, refrigerating efficiency even drops to less than 30%, causes the bigger waste of electric energy, and shortens the service life of refrigeration system.It is therefore desirable to carry out freezer defrosting operation within the suitable cycle.
The mode of traditional freezer defrosting includes hot gas defrosting, water spray defrosting, electrically defrosting, machinery defrosting etc..Hot gas defrosting is directly the high-temperature gas condensing agent of heat to be gone up without the entrance vaporizer that dams, evaporator temperature, promotes frosting layer dissolve with cold type joint portion or then peel off.Hot gas defrosting economy is reliable, and maintenance management is convenient, and its investment and difficulty of construction are the most little.But hot gas defrosting also has many schemes, generally way is the pressure high temperature hot gas that compressor is discharged to be sent into a vaporizer go heat release defrosting, the liquid allowing condensation enters back into the heat absorption evaporation of another vaporizer and becomes low temperature low pressure gas, is then return to compressor suction inlet and completes a circulation.
Utility model content
The purpose of this utility model is to provide a kind of hot gas defrosting device for cold storage refrigerating system, and simple in construction, defrosting effect is more preferably.
This utility model solves its technical problem and be the technical scheme is that a kind of hot gas defrosting device for cold storage refrigerating system, including piston compressor, pipe type cooling air evaporator, liquid reservoir, cocurrent flow type condenser, the outfan of described pipe type cooling air evaporator passes sequentially through suction filter, vapour liquid separator and oil water separator are connected with piston compressor, the other end of described piston compressor is connected with cocurrent flow type condenser, cocurrent flow type condenser is connected with the entrance of liquid reservoir, the outlet of liquid reservoir forms loop by the input of Filter dryer connecting tube chip cooling air evaporator, it is sequentially provided with liquid supply electromagnetic valve and heating power expansion valve between described Filter dryer and pipe type cooling air evaporator, the two ends of described piston compressor are provided with air pressure induction type pressure controller.
As preferably, between described piston compressor and pipe type cooling air evaporator, it is sequentially provided with constant pressure valve and hot gas solenoid valve.
The beneficial effects of the utility model are: simple in construction, entirety consume energy low, efficient energy-saving, and defrost better function.
Accompanying drawing explanation
Fig. 1 is the structural representation of the hot gas defrosting device for cold storage refrigerating system.
Detailed description of the invention
In order to make this utility model be solved the technical problem that, technical scheme and beneficial effect clearer, below in conjunction with accompanying drawing and embodiment, this utility model is further described.Should be appreciated that embodiment described herein is used only for explaining this utility model, be not used to limit this utility model.
nullAs described in Figure 1，A kind of hot gas defrosting device for cold storage refrigerating system of this utility model，Including piston compressor 1、Pipe type cooling air evaporator 2、Liquid reservoir 3、Cocurrent flow type condenser 4，The outfan of pipe type cooling air evaporator 2 passes sequentially through suction filter 5、Vapour liquid separator 6 and oil water separator 7 are connected with piston compressor 1，The other end of piston compressor 1 is connected with cocurrent flow type condenser 8，Cocurrent flow type condenser 4 is connected with the entrance of liquid reservoir 3，The outlet of liquid reservoir 3 forms loop by the input of Filter dryer 9 connecting tube chip cooling air evaporator 2，It is sequentially provided with liquid supply electromagnetic valve 9 and heating power expansion valve 10 between Filter dryer 8 and pipe type cooling air evaporator 2，The two ends of piston compressor 1 are provided with air pressure induction type pressure controller 11.
As preferred embodiment, between piston compressor 1 and pipe type cooling air evaporator 2, it is sequentially provided with constant pressure valve 12 and hot gas solenoid valve 13.
For the hot gas defrosting method of cold storage refrigerating system, comprise the following steps:
A. pressure fan runs a period of time, cocurrent flow type condenser and piston compressor operation work, opens liquid supply electromagnetic valve, closes defrosting electromagnetic valve, carries out lowering the temperature, dehumidifying；
B., after temperature reaches the first setting value, electric heater works, and heats；
C. when temperature reaches the second setting value, piston compressor and cocurrent flow type condenser quit work, liquid supply electromagnetic valve and defrosting closed electromagnetic valve；
D. when temperature, the arbitrary parameter of humidity are higher than the setting value upper limit, then step a is performed；
E. when suction steam pressure is down to three setting values, piston compressor/pressure fan and electric heater quit work, and liquid supply electromagnetic valve is closed, and defrost electromagnetic valve work, and defrosting starts, and defrost runs；
F. defrosting time stops to defrosting intervalometer, and pressure fan carries out, then performs step a.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equal replacement and improvement etc. made within spirit of the present utility model and principle, all should fall within protection domain of the present utility model.
Claims (2)
1. the hot gas defrosting device for cold storage refrigerating system, including piston compressor, pipe type cooling air evaporator, liquid reservoir, cocurrent flow type condenser, it is characterized in that: the outfan of described pipe type cooling air evaporator passes sequentially through suction filter, vapour liquid separator and oil water separator are connected with piston compressor, the other end of described piston compressor is connected with cocurrent flow type condenser, cocurrent flow type condenser is connected with the entrance of liquid reservoir, the outlet of liquid reservoir forms loop by the input of Filter dryer connecting tube chip cooling air evaporator, it is sequentially provided with liquid supply electromagnetic valve and heating power expansion valve between described Filter dryer and pipe type cooling air evaporator, the two ends of described piston compressor are provided with air pressure induction type pressure controller.
Hot gas defrosting device for cold storage refrigerating system the most according to claim 1, it is characterised in that: it is sequentially provided with constant pressure valve and hot gas solenoid valve between described piston compressor and pipe type cooling air evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620482868.4U CN205784073U (en) | 2016-05-25 | 2016-05-25 | Hot gas defrosting device for cold storage refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620482868.4U CN205784073U (en) | 2016-05-25 | 2016-05-25 | Hot gas defrosting device for cold storage refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205784073U true CN205784073U (en) | 2016-12-07 |
Family
ID=58114146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620482868.4U Expired - Fee Related CN205784073U (en) | 2016-05-25 | 2016-05-25 | Hot gas defrosting device for cold storage refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205784073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436046A (en) * | 2016-05-25 | 2017-12-05 | 广州宝丰冷冻仓储有限公司 | Hot gas defrosting devices and methods therefor for cold storage refrigerating system |
-
2016
- 2016-05-25 CN CN201620482868.4U patent/CN205784073U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436046A (en) * | 2016-05-25 | 2017-12-05 | 广州宝丰冷冻仓储有限公司 | Hot gas defrosting devices and methods therefor for cold storage refrigerating system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190525 |