CN103673447B - A kind of tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing - Google Patents
A kind of tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing Download PDFInfo
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- CN103673447B CN103673447B CN201310751881.6A CN201310751881A CN103673447B CN 103673447 B CN103673447 B CN 103673447B CN 201310751881 A CN201310751881 A CN 201310751881A CN 103673447 B CN103673447 B CN 103673447B
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Abstract
The invention discloses a kind of tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, comprising: cabinet, its inwall is covered by heat-insulating material, to form a tunnel type cold house in described cabinet; Nitrogen discharge line, it is communicated with described cabinet; Exhaust blower, it is arranged on described nitrogen discharge line, is discharged by cold house for making nitrogen; At least one heating element heater, it is arranged near exhaust fan impeller; Wherein, when exhaust blower runs after certain hour, all heating element heaters are all according to under type work: exhaust blower often runs 30 ~ 60min, each heating element heater heats exhaust fan impeller, and heating-up temperature is 110 ~ 150 DEG C, after heating and continuous 20 ~ 60s, stop heating, circulation repeatedly.The present invention is after exhaust blower runs a period of time, and when exhaust blower often runs 30 ~ 60min, heating element heater starts exhaust fan impeller heating, the frost that exhaust fan impeller is tied or ice-out.In addition, when exhaust blower runs, hot-air can flow in annular passage, and realizes heating to exhaust fan impeller.
Description
Technical field
The present invention relates to tunnel type liquid nitrogen frozen equipment, particularly relate to a kind of tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing.
Background technology
In prior art, liquid nitrogen to be supplied in cold house and rapid vaporization, makes the temperature in cold house maintain lower temperature, thus realizes the freezing of food.During the work of tunnel type liquid nitrogen frozen equipment, liquid nitrogen is vaporized into nitrogen in cold house, and the temperature of this part nitrogen remains lower, and when using exhaust blower to discharge nitrogen, exhaust blower is easy to frosting, affects the service life of exhaust blower.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing.
Technical scheme provided by the invention is:
The tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, comprising:
Cabinet, its inwall is covered by heat-insulating material, to form a tunnel type cold house in described cabinet;
Nitrogen discharge line, it is communicated with described cabinet;
Exhaust blower, it is arranged on described nitrogen discharge line, is discharged by cold house for making nitrogen;
At least one heating element heater, it is arranged near exhaust fan impeller;
Wherein, after described exhaust blower runs certain hour, all heating element heaters are all according to under type work: described exhaust blower often runs 30 ~ 60min, each heating element heater heats described exhaust fan impeller, heating-up temperature is 110 ~ 150 DEG C, after heating and continuous 20 ~ 60s, stop heating, circulation repeatedly.
Preferably, in the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, each heating element heater is heating plate.
Preferably, the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, also comprises:
Fore-cooling room, it is arranged on the front side of described cabinet;
Wherein, the other end of described nitrogen discharge line is communicated to described fore-cooling room.
Preferably, the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, also comprises:
Annular passage, it is arranged on described nitrogen discharge line, is positioned at the outside of described nitrogen discharge line, has the annular opening be communicated with described nitrogen discharge line, described exhaust blower is positioned at the centre position of described annular passage, and each heating element heater is arranged on the bottom of described annular passage.
Preferably, in the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, described annular passage comprises and extends to the expanding reach of middle part by described annular opening and extended to the contraction section of bottom by middle part.
Preferably, in the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, described expanding reach also comprises the extension of the inside extending to described nitrogen discharge line.
Preferably, in the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, described annular passage is arranged on the horizontal component of described nitrogen discharge line, and all heating element heaters are arranged in the first half of described annular passage.
Preferably, in the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, the bottom of described annular passage offers opening, and a rhone is removably mounted on the position of described opening, is positioned at the outside of described annular passage.
Preferably, in the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, the end of described exhaust fan impeller stretches in described annular passage.
Tunnel type liquid nitrogen frozen equipment of the present invention has following beneficial effect: the present invention arranges at least one heating element heater near exhaust fan impeller, and after exhaust blower runs a period of time, when exhaust blower often runs 30 ~ 60min, heating element heater starts and heats exhaust fan impeller, the frost that exhaust fan impeller is tied or ice-out, be unlikely to the normal work affecting exhaust blower.In addition, heating element heater is set directly on exhaust blower wheel hub, also can affect the service life of exhaust blower, and also can raise the temperature of nitrogen, be unfavorable for the cold utilizing nitrogen residual, therefore, have also been devised annular passage, each heating element heater is arranged on the bottom of annular passage, when exhaust blower runs, hot-air can flow in annular passage, and realizes heating to exhaust fan impeller, both heating was achieved to exhaust fan impeller, and do not need again heating element heater to be set directly on exhaust blower wheel hub.
Accompanying drawing explanation
Fig. 1 is the structural representation of tunnel type liquid nitrogen frozen equipment of the present invention;
Fig. 2 is the structural representation of annular passage of the present invention;
Fig. 3 is the A-A cross section view of Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to description word to make those skilled in the art.
As shown in Figure 1, the invention provides a kind of tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, comprising: cabinet 2, its inwall is covered by heat-insulating material, to form a tunnel type cold house in described cabinet; Nitrogen discharge line 1, it is communicated with described cabinet; Exhaust blower, it is arranged on described nitrogen discharge line, is discharged by cold house for making nitrogen; At least one heating element heater, it is arranged near exhaust fan impeller; Wherein, after described exhaust blower runs certain hour, all heating element heaters are all according to under type work: described exhaust blower often runs 30 ~ 60min, each heating element heater heats described exhaust fan impeller, heating-up temperature is 110 ~ 150 DEG C, after heating and continuous 20 ~ 60s, stop heating, circulation repeatedly.
Exhaust blower just can frosting after running a period of time.According to the difference setting cryogenic temperature in cold house, exhaust blower starts the time of frosting also not necessarily, in general, starts to prepare defrosting after exhaust blower runs 55 ~ 60min.Heating element cycles works, and heating and continuous 20 ~ 60s at every turn, does not need to heat always, is conducive to saving the energy.
Limited space around exhaust blower, in order to meet this restriction as far as possible, in the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, each heating element heater is heating plate.
The described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, also comprise: fore-cooling room 3, it is arranged on the front side of described cabinet; Wherein, the other end of described nitrogen discharge line 1 is communicated to described fore-cooling room.The nitrogen of discharging in cold house, itself also has certain cold, therefore can also be used for carrying out precooling treatment to food, in this case, then the other end of nitrogen discharge line is communicated to fore-cooling room; Certainly, also the other end of nitrogen discharge line can be communicated to the fore-cooling room of another tunnel type liquid nitrogen frozen equipment.
As shown in Figures 2 and 3, the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, also comprise: annular passage 4, it is arranged on described nitrogen discharge line 1, be positioned at the outside of described nitrogen discharge line 1, have the annular opening 11 be communicated with described nitrogen discharge line 1, described exhaust blower 5 is positioned at the centre position of described annular passage, and each heating element heater 6 is arranged on the bottom of described annular passage 4.During exhaust blower work, by the heating of heating element heater, one hot-air will flow in annular passage, and play the effect of heating to exhaust blower, thus realize defrosting.In this embodiment, do not need heating element heater to be set directly on exhaust fan impeller or exhaust blower wheel hub, these two kinds designs also exist following drawback respectively: require the power output that exhaust blower motor provides higher; Continuous heating easily causes exhaust fan impeller or exhaust blower wheel hub to deform, and affects exhaust blower service life; Cause nitrogen temperature to raise, affect the utilization ratio of cold.
In the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, described annular passage comprises and extends to the expanding reach 8 of middle part by described annular opening and extended to the contraction section 9 of bottom by middle part.Based on above-mentioned design, annular passage forms the space that a heating air flows therein, thus makes heating effect better; In addition, annular opening place is less, is more conducive to middle part hot-air being guided to exhaust fan impeller, improves defrosting effect.
In the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, described expanding reach 8 also comprises the extension 10 of the inside extending to described nitrogen discharge line.Further, in order to the root (centre of exhaust blower) making hot-air blow to exhaust fan impeller, flow to the centre of exhaust blower under the guiding of hot-air in extension and restriction.
In the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, described annular passage 4 is arranged on the horizontal component of described nitrogen discharge line, and all heating element heaters are arranged in the first half of described annular passage.
In the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, the bottom of described annular passage 4 offers opening, and a rhone 7 is removably mounted on the position of described opening, is positioned at the outside of described annular passage.Frost or ice change into the downward landing of water, and therefore, all heating element heaters should avoid the latter half of annular passage.Rhone for collecting the water of fusion, and is regularly discharged.
In one embodiment, in the described tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, the end of described exhaust fan impeller stretches in described annular passage.In order to ensure that hot-air can contact the whole surface of exhaust fan impeller, the end of exhaust fan impeller stretches in annular passage.
Although embodiment of the present invention are open as above, but it is not restricted to listed in description and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (8)
1. the tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing, is characterized in that, comprising:
Cabinet, its inwall is covered by heat-insulating material, to form a tunnel type cold house in described cabinet;
Nitrogen discharge line, it is communicated with described cabinet;
Exhaust blower, it is arranged on described nitrogen discharge line, is discharged by cold house for making nitrogen;
At least one heating element heater, it is arranged near exhaust fan impeller;
Wherein, after described exhaust blower runs certain hour, all heating element heaters are all according to under type work: described exhaust blower often runs 30 ~ 60min, each heating element heater heats described exhaust fan impeller, heating-up temperature is 110 ~ 150 DEG C, after heating and continuous 20 ~ 60s, stop heating, circulation repeatedly;
Annular passage, it is arranged on described nitrogen discharge line, outside outstanding to described nitrogen discharge line, has the annular opening be communicated with described nitrogen discharge line, described exhaust blower is positioned at the centre position of described annular passage, and each heating element heater is arranged on the bottom of described annular passage.
2. prevent the tunnel type liquid nitrogen frozen equipment that exhaust blower freezes as claimed in claim 1, it is characterized in that, each heating element heater is heating plate.
3. the tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing as claimed in claim 1, is characterized in that, also comprise:
Fore-cooling room, it is arranged on the front side of described cabinet;
Wherein, the other end of described nitrogen discharge line is communicated to described fore-cooling room.
4. prevent as claimed in claim 1 exhaust blower freeze tunnel type liquid nitrogen frozen equipment, it is characterized in that, described annular passage comprise by described annular opening extend to middle part expanding reach and by middle part extend to bottom contraction section.
5. prevent the tunnel type liquid nitrogen frozen equipment that exhaust blower freezes as claimed in claim 4, it is characterized in that, described expanding reach also comprises the extension of the inside extending to described nitrogen discharge line.
6. the tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing according to any one of claim 1 to 5, it is characterized in that, described annular passage is arranged on the horizontal component of described nitrogen discharge line, and all heating element heaters are arranged in the first half of described annular passage.
7. the tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing according to claim 6, it is characterized in that, the bottom of described annular passage offers opening, and a rhone is removably mounted on the position of described opening, is positioned at the outside of described annular passage.
8. the tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing according to claim 6, it is characterized in that, the end of described exhaust fan impeller stretches in described annular passage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310751881.6A CN103673447B (en) | 2013-12-31 | 2013-12-31 | A kind of tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310751881.6A CN103673447B (en) | 2013-12-31 | 2013-12-31 | A kind of tunnel type liquid nitrogen frozen equipment preventing exhaust blower from freezing |
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| CN103673447A CN103673447A (en) | 2014-03-26 |
| CN103673447B true CN103673447B (en) | 2015-11-11 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1002016A (en) * | 1963-05-16 | 1965-08-18 | Elmwood Liquid Products Inc | Improvements in or relating to liquid nitrogen freezing system and method of freezing food |
| US5174122A (en) * | 1989-10-02 | 1992-12-29 | Applied Cryogenics, Inc. | Method and means of low temperature treatment of items and materials with cryogenic liquid |
| CN103062847A (en) * | 2012-12-03 | 2013-04-24 | 青岛海信日立空调系统有限公司 | Top-outlet air conditioner outdoor unit, air conditioner and control method of air conditioner |
| CN203258947U (en) * | 2013-05-10 | 2013-10-30 | 科威嘉尼（北京）科技有限公司 | Tunnel quick-freezing device capable of recovering nitrogen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6345509B1 (en) * | 2000-01-21 | 2002-02-12 | Ukram Industries | Refrigeration of a food transport vehicle utilizing liquid nitrogen |
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2013
- 2013-12-31 CN CN201310751881.6A patent/CN103673447B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1002016A (en) * | 1963-05-16 | 1965-08-18 | Elmwood Liquid Products Inc | Improvements in or relating to liquid nitrogen freezing system and method of freezing food |
| US5174122A (en) * | 1989-10-02 | 1992-12-29 | Applied Cryogenics, Inc. | Method and means of low temperature treatment of items and materials with cryogenic liquid |
| CN103062847A (en) * | 2012-12-03 | 2013-04-24 | 青岛海信日立空调系统有限公司 | Top-outlet air conditioner outdoor unit, air conditioner and control method of air conditioner |
| CN203258947U (en) * | 2013-05-10 | 2013-10-30 | 科威嘉尼（北京）科技有限公司 | Tunnel quick-freezing device capable of recovering nitrogen |
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| CN103673447A (en) | 2014-03-26 |
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Effective date of registration: 20160128 Address after: 225733, No. 8, Center Road, Tao Zhuang Town Industrial Park, Taizhou, Jiangsu, Xinghua Patentee after: Kuwait canal (Jiangsu) Refrigeration Equipment Co. Ltd. Address before: 102299, Beijing Changping District science and Technology Park, super Road, No. 5 Patentee before: Kuwait canal (Beijing) Technology Co. Ltd. |