CN209623139U - It is a kind of for impregnate freezing indirect refrigeration system - Google Patents
It is a kind of for impregnate freezing indirect refrigeration system Download PDFInfo
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- CN209623139U CN209623139U CN201920299138.4U CN201920299138U CN209623139U CN 209623139 U CN209623139 U CN 209623139U CN 201920299138 U CN201920299138 U CN 201920299138U CN 209623139 U CN209623139 U CN 209623139U
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- dipping
- refrigerating
- refrigeration unit
- freezing
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Abstract
The utility model discloses a kind of for impregnating the indirect refrigeration system of freezing, the indirect refrigeration system includes the first cooling cycle system and dipping refrigerating circulation system, first cooling cycle system includes main refrigeration unit 1, evaporative condenser 2 and main refrigeration unit heat exchanger 3, and the dipping refrigerating circulation system includes water storage pool 4, refrigerating water pump 5, dipping freezing tank 6 and circulating pump 7；The main refrigeration unit 1 uses single machine two-stage screw bolt compressor, and the main refrigeration unit heat exchanger 3 is totally submerged in water storage pool 4；The refrigerating medium containing Water Dispersible Polyisocyanates is used in the dipping refrigerating circulation system.
Description
Technical field
The utility model relates to low-temperature refrigeration technology field more particularly to it is a kind of for impregnate freezing indirect refrigeration system
System.
Background technique
Food safety and cold chain construction enter high-speed development period, the backbone ring that freezer circulates as food low-temperature at present
Section, is crucial the links of entire cold chain.It is being with air using traditional for aquatic products and meat products
When medium is freezed, due to being more than 40 minutes at a temperature of -4 DEG C~-1 DEG C of food, ice crystal is also just consequently formed.At this moment by
Freeze the outer density with intracellular fluid of object cell to be changed, pressure also start it is unbalanced, along with the edge ratio of ice slag
Sharper, cell wall can be punctured quickly under double action.As a result, intracellular fluid be lost, full nutrition therein also with
Loss.So food after thawing, people, which taste also, has very big difference with fresh food.
It then can be quickly by food cooling to -5 using the dipping Refrigeration Technique that refrigerating medium directly freezes food
DEG C hereinafter, to preventing cell liquid from crystallizing.But when being freezed for large batch of food, due to food and refrigerating medium it
Between heat exchange it is too big, required matched cooling unit power number is higher, and refrigeration unit is needed to be switched on for a long time, to cause into
This is significantly increased.
It can be seen that being badly in need of one kind in this field at present can run at lower cost, and realize low to the progress of a large amount of food
Temperature impregnates quick-frozen Refrigeration Technique.
Utility model content
One of technical problem to be solved in the utility model be to provide it is a kind of can in high volume carry out impregnating it is quick-frozen between
Connect refrigeration system, and the operation cost that the refrigeration system can more have been saved with the instant-frozen system in compared with the existing technology.
In order to solve the above-mentioned technical problem, the utility model provides a kind of for impregnating the indirect refrigeration system of freezing,
It include the first cooling cycle system and dipping refrigerating circulation system, first cooling cycle system include main refrigeration unit 1,
Evaporative condenser 2 and main refrigeration unit heat exchanger 3, the dipping refrigerating circulation system include water storage pool 4, refrigerating water pump 5, dipping
Freezing tank 6 and circulating pump 7；The main refrigeration unit 1 uses single machine two-stage screw bolt compressor, the main refrigeration unit heat exchanger 3
It is totally submerged in water storage pool 4；The refrigerating containing Water Dispersible Polyisocyanates is used in the dipping refrigerating circulation system
Agent.
In one embodiment, 1 refrigerant of main refrigeration unit uses R404A.
In one embodiment, the main refrigeration unit heat exchanger 3 uses the coil exchanger of 16Mn steel pipe.
In one embodiment, the specific ingredient of the refrigerating medium be by mass ratio be 30%~45% potassium formate,
15%~27% pentaerythrite, 10%~18% Water Dispersible Polyisocyanates, 0~3% propylene glycol, 0~2% dehydrogenation
Sodium acetate, 0~2% potassium sorbate and 15%~25% distilled water constitute.
In one embodiment, described its internal layer of water storage pool 4 is 0.5mm carbon steel sheet, and outer layer is 300mm polyurethane heat-insulation
Layer.
In one embodiment, the dipping freezing tank 6 be stainless steel cabinet, outside be coated with polyurethane insulation coating,
Top is provided with insulation cover.
<the first cooling cycle system>
First cooling cycle system of the utility model includes that main refrigeration unit, main refrigeration unit heat exchanger and evaporation are cold
Condenser.The effect of first cooling cycle system is to freeze to cold liquid in water storage pool, make in cold liquid reach expected
Temperature.Direct sweat cooling system can be used in the first cooling cycle system in the utility model, for example, using freon as system
The refrigeration system of cryogen, or also use liquefied ammonia as the refrigeration system of refrigerant.It include compressor and section in main refrigeration unit
Valve is flowed, the compressor uses single machine two-stage screw bolt compressor.Single machine two-stage screw bolt compressor is generally required in low-temperature zone, i.e., low
Use can be loaded in -25 DEG C, if be easy to causeing electric current is excessive unit is caused to burn when high temperature section refrigeration load is excessive.
And can guarantee that single machine compression with double stage machine runs on always low-temperature zone using water storage pool in the utility model, that is, guarantee the second system
Refrigerating medium in SAPMAC method system is not higher than -25 DEG C.Thus it is reduced using single machine compression with double stage machine effect than high feature entire
The energy consumption of refrigeration system, this is one of the utility model key technology.And in the initial of the refrigeration system of the utility model operation
Stage, i.e., when the refrigerating medium in water storage pool is not below -25 DEG C, can take makes single machine compression with double stage machine be in full lower than it
The general state operation of power is carried, at this moment refrigeration effect is although poor but can guarantee that compressor is not in failure, Huo Zheli
First the refrigerant temperature of water storage pool is dragged down with other refrigeration units, restarts single machine two-stage screw bolt pressure when being lower than -25 DEG C
The operation of contracting machine.But once the refrigerating medium in water storage pool is lower than -25 DEG C, after single machine two-stage screw bolt compressor can be loaded,
The refrigeration system of the utility model can be always with the operation of high energy efficiency ratio state.
The optional coil exchanger of main refrigeration unit heat exchanger used in first cooling cycle system, plate heat exchanger
Or combinations thereof.
<dipping refrigerating circulation system>
In the dipping refrigerating circulation system of the utility model include water storage pool, refrigerating water pump, circulating pump, dipping freezing tank with
And its what is flowed in pipeline interconnected and pipeline is potassium formate-pentaerythrite-Water Dispersible Polyisocyanates-water system
Refrigerating medium.The concrete component of the refrigerating medium be mass ratio 30%~45% potassium formate, 15%~27% pentaerythrite, 10%
~18% Water Dispersible Polyisocyanates, 0~3% propylene glycol, 0~2% dehydroactic acid sodium, 0~2% potassium sorbate and
15%~25% distilled water is constituted.Density of cold liquid is in 1.04~1.36g/cm in this3, specific heat is in 0.56~0.746cal/
G DEG C, viscosity is greater than 150 DEG C in 0.21~0.47W/m.K, boiling point in 2.9~15.9mPas (cp), thermal conductivity, and freezing point is small
In -60 DEG C, no flash-point.System of freezing as caused by oil return difficulty is avoided due to using without mixed base grease in cold liquid in this
Energy consumption of uniting increases.
According to volume needed for dipping freezing tank, the volume for impregnating water storage pool in refrigerating circulation system can be in 20~60m3
Between be adjusted according to physical condition.Its internal layer of water storage pool is 0.5mm carbon steel sheet, and outer layer is 300mm polyurethane insulation coating.
It impregnates freezing tank and uses stainless steel cabinet, cabinet outer protection polyurethane insulation coating, incubator is arranged in cabinet upper end
Lid is for preventing loss of refrigeration capacity.The volume of freezing tank is impregnated according to the daily quick-frozen amount of food and for the freezing of loading of pieces
The volume of shelf is calculated.For example, needing quick-frozen 40 tons of mutton daily, stainless steel frozen cargo frame is set as 1000mm × 650mm
× 1000mm is arranged to 7 layers, and each freezing shelf can carry 280Kg mutton.The size for then impregnating freezing tank may be designed as
3900mm × 800mm × 1500mm freezes shelf for placing three rows, amounts to 36.Every 2 hours achievable quick-frozen 10 tons of mutton,
Daily 8 hours achievable quick-frozen 40 tons.
Compared with prior art, the key technology point of the utility model includes following several respects:
1. use water storage pool as refrigerating medium cold-storage device in the utility model, so as to by the booting of refrigeration unit
Time adjustment is to the electricity price valley period is used, to reduce entire refrigeration system operation cost.
2. use single machine compression with double stage machine as main refrigeration unit in the utility model, it can under the action of water storage pool
Guarantee that single machine compression with double stage machine is run in low-temperature zone normal load always, using the high advantage of single machine compression with double stage machine Energy Efficiency Ratio,
Effectively reduce the power consumption of refrigeration unit.
The refrigerating medium of Water Dispersible Polyisocyanates is contained 3. having used in the utility model, the use of the refrigerating medium makes
- 40 DEG C of low temperature can be cooled to hereinafter, to realize the cold-storage of greater strength by obtaining refrigerating medium.
4. directly use refrigerating medium to carry out dipping freezing to food in dipping freezing tank as refrigerant in the utility model,
The chilling rate of food is substantially increased, guarantees that food can be cooled to -5 DEG C hereinafter, to prevent cell in prestissimo
Liquid crystallization.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages can pass through
Specifically noted structure is achieved and obtained in the specification, claims and drawings.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used together to explain the utility model, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the system structure diagram according to the utility model refrigeration system；
Fig. 2 is according to the utility model refrigeration system quick-frozen time and the transmitting quick-frozen time contrast schematic diagram of freezer；
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with attached drawing to the utility model
It is described in further detail.
Fig. 1 is the system structure diagram according to an embodiment of the present invention.The present embodiment is carried out below with reference to Fig. 1
Explanation.
The dipping freezing indirect refrigeration system of the present embodiment includes the first cooling cycle system and dipping refrigerating circulation system,
First cooling cycle system includes main refrigeration unit 1, evaporative condenser 2 and main refrigeration unit heat exchanger 3, and the dipping is cold
Freezing the circulatory system includes water storage pool 4, refrigerating water pump 5, dipping freezing tank 6 and circulating pump 7.Main refrigeration unit described in the present embodiment
1 uses single machine two-stage screw bolt compressor, is the meat of 40 ton per days for quick-frozen amount, and by quick-frozen to -22 DEG C of meat of quick-frozen need
It asks down, needs to use single-machine capacity used in parallel for 2, single machine compression with double stage machine of 200KW.Institute in first cooling cycle system
The refrigerant used is R404A, and 2 operating condition heat exhausts of evaporative condenser are the downflow type evaporative condenser of 960KW, the main system
Cold group heat exchanger uses the coil exchanger of 16Mn steel pipe.The appearance of water storage pool 4 in the dipping refrigerating circulation system
Product is 30m3, which is 0.5mm carbon steel sheet, and outer layer is 300mm polyurethane insulation coating.Refrigerating water pump 5 and circulation
Pump 7 is all made of the centrifugal pump that the variable-frequency motor that power is 22KW drives.The dipping freezing tank 6 be sized to 1300mm ×
800mm × 1500mm is used in series using three dipping freezing tanks, which can complete 10 tons of meats in every 2 hours
Quick-frozen, the 40 tons of kinds of goods of completion in daily 8 hours are quick-frozen.
The main refrigeration unit heat exchanger of the first cooling cycle system, which is completely submerged in water storage pool, in the present embodiment stores
Refrigerating medium in, the group of refrigerating medium used in the present embodiment be divided into the potassium formate of mass ratio 38%, 21% pentaerythrite,
16.9% Water Dispersible Polyisocyanates, 1.55% propylene glycol, 1.45% dehydroactic acid sodium, 1.1% potassium sorbate and
20% distilled water is constituted.
The refrigerating operaton process of the present embodiment is as follows: in the electricity price valley period, starting main refrigeration unit 1, utilizes the first system
SAPMAC method system freezes to the refrigerating medium in water storage pool 4, and the refrigerant temperature in water storage pool 4 is down to -40 DEG C, with
After close main refrigeration unit 1.When progress meat is quick-frozen, refrigerating water pump 5 is opened, circulating pump 7 is closed, makes refrigerating medium in water storage pool
It is constantly recycled between 4 and dipping freezing tank 6.When refrigerant temperature rises to -25 DEG C, refrigerating water pump 5 and water storage pool are closed
Fluid valve is passed in and out, circulating pump 7 is opened, refrigerating medium is all between dipping freezing tank and recycles.The electricity price valley period is waited to arrive simultaneously
Freezed to refrigerating medium with starting main refrigeration unit 1, freezing is again turned on after so that refrigerant temperature is re-lowered to -40 DEG C
Pump 5 closes circulating pump 7, recycles refrigerating medium constantly between water storage pool 4 and dipping freezing tank 6.It can guarantee single machine in this way
Double-stage compressor be in always low-temperature zone can stress state operation, keep single machine compression with double stage machine transported in best Energy Efficiency Ratio state
Row.
Fig. 2 is the quick-frozen time graph and the transmitting quick-frozen temporal comparison of calandria freezer of the present embodiment, can be with from Fig. 2
Find out the utility model dipping instant-frozen system can within 2 hours by fast food freezing to -22 DEG C, and traditional quick-frozen mode
Only fresh-keeping demand can also be not achieved by fast food freezing to -13 DEG C within same 2 hours.
The above, only the specific implementation case of the utility model, the protection scope of the utility model are not limited to
This, it is any to be familiar with those skilled in the art in technical specification described in the utility model, modification to the utility model or
Replacement, should all be within the protection scope of the utility model.
Claims (5)
1. a kind of for impregnating the indirect refrigeration system of freezing, which is characterized in that the indirect refrigeration system includes the first refrigeration
The circulatory system and dipping refrigerating circulation system, first cooling cycle system includes main refrigeration unit 1,2 and of evaporative condenser
Main refrigeration unit heat exchanger 3, the dipping refrigerating circulation system include water storage pool 4, refrigerating water pump 5, dipping freezing tank 6 and circulation
Pump 7；The main refrigeration unit 1 uses single machine two-stage screw bolt compressor, and the main refrigeration unit heat exchanger 3 is totally submerged in cold-storage
In pond 4；Flowing has refrigerating medium in the dipping refrigerating circulation system.
2. indirect refrigeration system according to claim 1, which is characterized in that main 1 refrigerant of refrigeration unit uses
R404A。
3. indirect refrigeration system according to claim 1, which is characterized in that the main refrigeration unit heat exchanger 3 uses
The coil exchanger of 16Mn steel pipe.
4. indirect refrigeration system according to claim 1, which is characterized in that described its internal layer of water storage pool 4 is 0.5mm carbon
Steel plate, outer layer are 300mm polyurethane insulation coating.
5. indirect refrigeration system according to claim 1, which is characterized in that the dipping freezing tank 6 is stainless steel cabinet,
Polyurethane insulation coating is coated with outside it, top is provided with insulation cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920299138.4U CN209623139U (en) | 2019-03-11 | 2019-03-11 | It is a kind of for impregnate freezing indirect refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920299138.4U CN209623139U (en) | 2019-03-11 | 2019-03-11 | It is a kind of for impregnate freezing indirect refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209623139U true CN209623139U (en) | 2019-11-12 |
Family
ID=68456299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920299138.4U Active CN209623139U (en) | 2019-03-11 | 2019-03-11 | It is a kind of for impregnate freezing indirect refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209623139U (en) |
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2019
- 2019-03-11 CN CN201920299138.4U patent/CN209623139U/en active Active
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