CN204438629U - A kind of tunnel type liquid nitrogen flash freezer machine - Google Patents
A kind of tunnel type liquid nitrogen flash freezer machine Download PDFInfo
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- CN204438629U CN204438629U CN201520082093.7U CN201520082093U CN204438629U CN 204438629 U CN204438629 U CN 204438629U CN 201520082093 U CN201520082093 U CN 201520082093U CN 204438629 U CN204438629 U CN 204438629U
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Abstract
The utility model relates to a kind of quick-freezing plant.For solving technical problem existing in prior art, the utility model provides a kind of tunnel type liquid nitrogen flash freezer machine, comprise a tunnel type refrigerating chamber, the two ends of refrigerating chamber are respectively feed end and discharge end, also comprise circulating type conveyer belt, conveyer belt is positioned at refrigerating chamber, the two ends of conveyer belt lay respectively at the feed end of refrigerating chamber and the outside of discharge end, one end of conveyer belt is sleeved on driving wheel, the other end is set with on the driven wheel thus in refrigerating chamber, forms upper and lower two-layer conveyer belt, the roof of refrigerating chamber is provided with liquid nitrogen spraying pipe and Diffusion fan, it is characterized in that: in described refrigerating chamber, be provided with liquid nitrogen reflecting plate, described liquid nitrogen reflecting plate is between upper and lower two-layer conveyer belt, liquid nitrogen reflecting plate extends to discharge end by the feed end of refrigerating chamber, the both sides of liquid nitrogen reflecting plate and the sidewall of refrigerating chamber both sides are connected and fixed.This liquid nitrogen flash freezer machine is rational in infrastructure, effectively can reduce the use amount of liquid nitrogen, improves the quick-frozen quality of food.
Description
Technical field
The utility model relates to a kind of quick-freezing plant, specifically refers to a kind of tunnel type liquid nitrogen flash freezer machine.
Background technology
Because the boiling point of liquid nitrogen is-196 DEG C, be easy to vaporization, can amount of heat be absorbed in vaporescence, environment temperature is sharply declined, be therefore widely used in quick-frozen production.For quick-frozen conditioning food, application liquid nitrogen flash freezer machine carries out quick-frozen conditioning to food, and not only quick-frozen is effective, and quick-frozen ultrahigh in efficiency.The modal liquid nitrogen flash freezer machine for fast food freezing conditioning is based on tunnel type, as application number: 201410254009.5, title: a kind of liquid nitrogen frozen instant freezer, application number: 201320253676.2, title: a kind of tunnel type quick refrigerating unit of recyclable nitrogen, the common structure of above-mentioned instant freezer comprises a tunnel type refrigerating chamber, circulating type foraminous conveyer is provided with in refrigerating chamber, two ends opening formation feed end and the discharge end respectively of refrigerating chamber, foraminous conveyer extends to discharge end by feed end, is provided with liquid nitrogen spraying pipe in refrigerating chamber inside.The greatest drawback that current liquid nitrogen flash freezer machine exists has two aspects, and one is that liquid nitrogen consumption is comparatively large, directly increases the quick-frozen cost of food.Two is that liquid nitrogen becomes nitrogen after vaporization, and nitrogen needs to get rid of in time, occurs danger to prevent the too high operating personnel of causing of nitrogen content in air because of anoxic.For the technical problem that liquid nitrogen consumption is large, at application number: 201320253676.2, title: disclose a technical scheme in a kind of patent application of tunnel type quick refrigerating unit of recyclable nitrogen, this technical scheme arranges nitrogen recycling container with instant freezer, returnable is communicated to refrigerating chamber, and the communication path of nitrogen recycling container and described refrigerating chamber arranges the first fan.But the very large defect of technical scheme existence of this kind of saving liquid nitrogen fully and after Food Contact will not be pumped after the liquid nitrogen vaporization in refrigerating chamber, seem and adopt recovering means to save liquid nitrogen reality and but cause quick-frozen deleterious, the use amount of liquid nitrogen increases on the contrary.
Summary of the invention
For solving technical problem existing in above-mentioned prior art, the utility model improves on the basis of existing tunnel type liquid nitrogen flash freezer machine, reduces liquid nitrogen consumption, improve the technical purpose of product quick-frozen effect to reach.
For realizing above-mentioned technical purpose, the technical solution adopted in the utility model is: a kind of tunnel type liquid nitrogen flash freezer machine, comprise a tunnel type refrigerating chamber, the two ends of refrigerating chamber are respectively feed end and discharge end, and also comprise circulating type conveyer belt, conveyer belt is positioned at refrigerating chamber, the two ends of conveyer belt lay respectively at the feed end of refrigerating chamber and the outside of discharge end, one end of conveyer belt is sleeved on driving wheel, and the other end is set with on the driven wheel thus in refrigerating chamber, forms upper and lower two-layer conveyer belt
The roof of refrigerating chamber is provided with liquid nitrogen spraying pipe and Diffusion fan, it is characterized in that: in described refrigerating chamber, be provided with liquid nitrogen reflecting plate, described liquid nitrogen reflecting plate is between upper and lower two-layer conveyer belt, liquid nitrogen reflecting plate extends to discharge end by the feed end of refrigerating chamber, and the both sides of liquid nitrogen reflecting plate and the sidewall of refrigerating chamber both sides are connected and fixed.
Further, the distance of described liquid nitrogen reflecting plate distance upper strata conveyer belt is 1.5-5cm.
Further, the feed end of refrigerating chamber and the port of discharge end are provided with nitrogen suction box, the bottom opening of described nitrogen suction box, charging aperture and discharging opening is formed bottom nitrogen suction box and between the conveyer belt of upper strata, the top of nitrogen suction box is provided with exhaust duct, and exhaust duct top is provided with induced draft fans.
Further, the tapered contraction in bottom of described nitrogen suction box, the bottom opening of nitrogen suction box is a slot, and the width of slot is consistent with conveyer belt width.
Further, the sidewall of described nitrogen suction box is provided with air door, described air door is side walls hinged by jointed shaft and nitrogen suction box, and jointed shaft stretches out nitrogen suction box and be provided with control handle on external part, can control the folding angle of air door in nitrogen suction box by the rotation of jointed shaft.
The beneficial effects of the utility model are: rational in infrastructure, easy to operate, effectively can reduce the use amount of liquid nitrogen, improve the quick-frozen quality of food.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
In accompanying drawing 2 accompanying drawings 1, A-A is to sectional view.
Accompanying drawing 3 is the structural representation of nitrogen suction box.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.
As shown in Figure 1, consistent as tunnel type liquid nitrogen flash freezer machine of the prior art, comprise a tunnel type refrigerating chamber 1, the two ends of refrigerating chamber are respectively feed end and discharge end, also comprise circulating type conveyer belt 2, conveyer belt 2 is positioned at refrigerating chamber 1, and the two ends of conveyer belt lay respectively at the feed end of refrigerating chamber and the outside of discharge end, one end of conveyer belt is sleeved on driving wheel, and other end suit on the driven wheel.As shown in Figure 1, this tunnel type liquid nitrogen flash freezer machine is furnished with liquid nitrogen and fills with 3, liquid nitrogen is filled with 3 and is connected with the liquid nitrogen spraying pipe of refrigerating chamber 1 inside (can not show in liquid nitrogen spraying pipe accompanying drawing) by carrier pipe 4, the roof of refrigerating chamber 1 is provided with Diffusion fan 5, the blade of Diffusion fan 5 is positioned at refrigerating chamber 1 inside, when liquid nitrogen spraying pipe is after refrigerating chamber 1 internal spray liquid nitrogen, by Diffusion fan 5, liquid nitrogen is diffused to the inside of refrigerating chamber 1, the temperature of refrigerating chamber 1 inside is declined rapidly, thus makes the material on conveyer belt 2 obtain quick freeze after by refrigerating chamber 1.
As shown in Figure 2, circulating type conveyer belt 2 forms upper and lower double-layer structure in refrigerating chamber 1 inside, i.e. upper strata conveyer belt 2-1 and conveying belt of lower floor 2-2, material is positioned at the surface of upper strata conveyer belt 2-1, what conveyer belt 2 adopted is mesh belt structure, namely conveyer belt 2 is provided with uniform mesh, this is for enabling liquid nitrogen diffuse to the bottom of upper strata conveyer belt 2-1 by the diffusion of Diffusion fan 5, make the low temperature properties that the top of upper strata conveyer belt 2-1 and bottom are consistent, ensure to obtain quick-frozen with top, to prevent the uneven phenomenon of quick-frozen bottom material simultaneously.But find in practical operation, the spacing of upper strata conveyer belt 2-1 and conveying belt of lower floor 2-1 is larger, general spacing is between 20-50cm, if reduce two-layer up and down between spacing, the two ends of conveyer belt 2 there will be difficulty when counter motion, and between the base plate of conveying belt of lower floor 2-2 and refrigerating chamber 1, also can leave the distance of 10-20cm, when liquid nitrogen spreads in refrigerating chamber, space bottom the conveyer belt 2-1 of upper strata can be diffused feed liquor nitrogen simultaneously, one is the consumption that the increase of refrigeration space improves liquid nitrogen thus, two be liquid nitrogen be diffused blower fan force be diffused into after bottom refrigerating chamber, the refrigeration at the conveyer belt 2-1 back side, upper strata is had an impact, cause the quick-frozen poor effect bottom material sometimes.For solving this problem, as shown in Figure 2, arrange liquid nitrogen reflecting plate 6 in refrigerating chamber 1, this liquid nitrogen reflecting plate 6 is between upper and lower two-layer conveyer belt, liquid nitrogen reflecting plate 6 extends to discharge end by the feed end of refrigerating chamber, and the both sides of liquid nitrogen reflecting plate and the sidewall of refrigerating chamber both sides are connected and fixed.Liquid nitrogen reflecting plate 6 reduces the distance between the conveyer belt 2-1 of upper strata when mounted as far as possible, is generally advisable with 1.5-5cm.Refrigeration space is reduced by installing liquid nitrogen reflecting plate 6, reduce the use amount of liquid nitrogen, the liquid nitrogen of shower ejection simultaneously presses down downwards at Diffusion fan 5 in the process of diffusion and is easy to be reflected by liquid nitrogen reflecting plate 6, liquid nitrogen, vaporizing near the bottom of upper strata conveyer belt 2-1 thus make the temperature bottom the conveyer belt 2-1 of upper strata reduce rapidly as far as possible, ensures the refrigerating effect bottom material on the conveyer belt of upper strata.
Because liquid nitrogen can be overflowed by the two ends of refrigerating chamber at vaporization nitrogen of programming afterwards, can cause the reduction of content of oxygen in air, bring hypoxic hazard to operating personnel when nitrogen amount is excessive, the nitrogen of therefore discharging must be got rid of in time.Thus, as shown in Figure 1, in the utility model, the feed end of refrigerating chamber and the port of discharge end are provided with nitrogen suction box 7.As shown in Figure 3, in the present embodiment, the tapered contraction in the bottom of nitrogen suction box 7, the bottom opening of nitrogen suction box is a slot 7-1, the width of slot is consistent with conveyer belt width, and the top of nitrogen suction box is provided with exhaust duct 7-2, and exhaust duct top is provided with induced draft fans 7-3.As shown in Figure 1, charging aperture 8 and discharging opening 9 is formed bottom nitrogen suction box and between the conveyer belt of upper strata.
After adopting above-mentioned setting, utilize induced draft fans 7-3 can be extracted out by the nitrogen that charging aperture 8 and discharging opening 9 are overflowed then outside discharge chamber in time, but find in practical operation, the nitrogen of induced draft fans to effusion is only utilized to extract the problem of depositing both ways out, one, the temperature due to nitrogen of overflowing is extremely low, induced draft fans is while extraction nitrogen, induced draft fans can form frost, when after induced draft fans frosting, the static balance of induced draft fans is broken, induced draft fans can cause great noise in running, simultaneously the lost of life of induced draft fans.If two, induced draft fans is not limited when aspirating, the liquid nitrogen in refrigerating chamber after vaporization be not able to do in time with freezing in carry out heat exchange and namely extracted out by induced draft fans, cause refrigeration in refrigerating chamber to reduce, also improve the use amount of liquid nitrogen simultaneously.For solving the problem, as shown in accompanying drawing 1 and accompanying drawing 3, the sidewall of nitrogen suction box arranges air door 7-4, this air door is side walls hinged by jointed shaft and nitrogen suction box, jointed shaft stretches out nitrogen suction box and on external part, is provided with control handle 10, can control the folding angle of air door in nitrogen suction box by the rotation of jointed shaft.After increasing throttle setting, after air door is opened, the fresh air outside nitrogen suction box is drawn into box house and nitrogen carries out the frost that heat exchange solves induced draft fans, maintains the static balance of induced draft fans.Simultaneously by the aspiration of the folding Angle ambiguity nitrogen of air door, when the inside flip angle of air door becomes large, air door is formed nitrogen rising passway and stops, reduce the aspiration of nitrogen prevent in refrigerating chamber when do not carry out fully refrigeration nitrogen be namely pumped, the refrigeration improved in refrigerating chamber reduces the use amount of liquid nitrogen simultaneously further.
Claims (5)
1. a tunnel type liquid nitrogen flash freezer machine, comprise a tunnel type refrigerating chamber, the two ends of refrigerating chamber are respectively feed end and discharge end, also comprise circulating type conveyer belt, conveyer belt is positioned at refrigerating chamber, the two ends of conveyer belt lay respectively at the feed end of refrigerating chamber and the outside of discharge end, one end of conveyer belt is sleeved on driving wheel, the other end is set with on the driven wheel thus in refrigerating chamber, forms upper and lower two-layer conveyer belt, the roof of refrigerating chamber is provided with liquid nitrogen spraying pipe and Diffusion fan, it is characterized in that: in described refrigerating chamber, be provided with liquid nitrogen reflecting plate, described liquid nitrogen reflecting plate is between upper and lower two-layer conveyer belt, liquid nitrogen reflecting plate extends to discharge end by the feed end of refrigerating chamber, the both sides of liquid nitrogen reflecting plate and the sidewall of refrigerating chamber both sides are connected and fixed.
2. a kind of tunnel type liquid nitrogen flash freezer machine according to claim 1, is characterized in that: the distance of described liquid nitrogen reflecting plate distance upper strata conveyer belt is 1.5-5cm.
3. a kind of tunnel type liquid nitrogen flash freezer machine according to claim 1, it is characterized in that: on the feed end of refrigerating chamber and the port of discharge end, be provided with nitrogen suction box, the bottom opening of described nitrogen suction box, charging aperture and discharging opening is formed bottom nitrogen suction box and between the conveyer belt of upper strata, the top of nitrogen suction box is provided with exhaust duct, and exhaust duct top is provided with induced draft fans.
4. a kind of tunnel type liquid nitrogen flash freezer machine according to claim 3, it is characterized in that: the tapered contraction in bottom of described nitrogen suction box, the bottom opening of nitrogen suction box is a slot, and the width of slot is consistent with conveyer belt width.
5. a kind of tunnel type liquid nitrogen flash freezer machine according to claim 3 or 4, it is characterized in that: the sidewall of described nitrogen suction box is provided with air door, described air door is side walls hinged by jointed shaft and nitrogen suction box, jointed shaft stretches out nitrogen suction box and be provided with control handle on external part, can control the folding angle of air door in nitrogen suction box by the rotation of jointed shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520082093.7U CN204438629U (en) | 2015-02-06 | 2015-02-06 | A kind of tunnel type liquid nitrogen flash freezer machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520082093.7U CN204438629U (en) | 2015-02-06 | 2015-02-06 | A kind of tunnel type liquid nitrogen flash freezer machine |
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| CN204438629U true CN204438629U (en) | 2015-07-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634037A (en) * | 2015-02-06 | 2015-05-20 | 泰祥集团孵化器有限公司 | Tunnel type liquid nitrogen quick freezing machine |
| CN108402382A (en) * | 2018-04-09 | 2018-08-17 | 太仓鼎膳食品有限公司 | A kind of anti-spilling type quick-frozen food production liquid nitrogen flash freezer system |
-
2015
- 2015-02-06 CN CN201520082093.7U patent/CN204438629U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634037A (en) * | 2015-02-06 | 2015-05-20 | 泰祥集团孵化器有限公司 | Tunnel type liquid nitrogen quick freezing machine |
| CN104634037B (en) * | 2015-02-06 | 2017-01-25 | 泰祥集团孵化器有限公司 | Tunnel type liquid nitrogen quick freezing machine |
| CN108402382A (en) * | 2018-04-09 | 2018-08-17 | 太仓鼎膳食品有限公司 | A kind of anti-spilling type quick-frozen food production liquid nitrogen flash freezer system |
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