CN210070327U - Molecular precooling equipment - Google Patents
Molecular precooling equipment Download PDFInfo
- Publication number
- CN210070327U CN210070327U CN201920831800.6U CN201920831800U CN210070327U CN 210070327 U CN210070327 U CN 210070327U CN 201920831800 U CN201920831800 U CN 201920831800U CN 210070327 U CN210070327 U CN 210070327U
- Authority
- CN
- China
- Prior art keywords
- box body
- equipment
- evaporator
- molecular
- inert gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the field of refrigeration equipment, and discloses molecular precooling equipment, which comprises a box body, wherein an evaporator is arranged in the box body, and the box body is connected with a vacuumizing device; one end of the evaporator is an input end connected with a liquid inert gas supply device, and the other end of the evaporator is a discharge end communicated with the atmosphere outside the box body. The equipment can rapidly cool the articles to 1-5 ℃ within 15-20 minutes, so that the temperature of the articles such as vegetables, melons and fruits and rice can be rapidly lowered, and the freshness of the food can be improved to the maximum extent; the equipment adopts liquid inert gas as a refrigerant, and directly discharges the refrigerant after the refrigerant is gasified, so that the floor area of the equipment can be effectively reduced; the coolant adopted by the equipment is liquid inert gas, and the liquefaction temperature of the coolant is generally lower; it can provide a large amount of cold volumes fast, makes article temperature reduce fast.
Description
Technical Field
The utility model relates to a refrigeration plant field specifically is a molecular precooling apparatus.
Background
The vacuum fresh-keeping equipment is an effective equipment for quickly keeping fresh of vegetables and fast food.
Applicant's wide green agricultural product limited company of reclaiming in guangdong has applied for a utility model patent ZL201621113465.9 in 2016, it discloses a vacuum refrigeration device that keeps fresh, including box and vacuum pump, the ammonia pump, the liquid storage pot, evaporative condenser, compressor, be equipped with cooling coil in the box, the cooling coil input is connected with ammonia pump output, the cooling coil output runs through and is connected with the first input of liquid storage pot, the compressor output is connected with the first output of liquid storage pot, the second output and the ammonia pump input of liquid storage pot are connected, evaporative condenser's refrigerant entry and compressor output are connected, evaporative condenser's refrigerant export and the second input of liquid storage pot are connected, it has a plurality of upper row holes to open on the baffle. The fan rotates, and the air current of motion is through diminishing progressively of its circulation cross sectional area, and its velocity of flow increases gradually, and after entering into straight section, steady between the velocity of flow of air current to drive the gas or the rebound such as steam that vegetables released on the baffle, shorten the time that can cause the rotten moist steam of vegetables to dwell in the box.
The equipment adopts ammonia liquid as a cold source and carries out refrigeration through a compressor.
The equipment structure is complex and the occupied area is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a molecular precooling device, which can rapidly cool objects to 1-5 ℃ within 15-20 minutes, realize rapid temperature reduction of objects such as vegetables, melons and fruits, and meals, and improve the freshness of foods as much as possible; the equipment adopts liquid inert gas as a refrigerant, directly discharges the refrigerant after the refrigerant is gasified, does not need a compressor to refrigerate, does not need to reserve the occupied area for the compressor, and can effectively reduce the occupied area of the equipment; the coolant adopted by the equipment is liquid inert gas, the liquefaction temperature of the coolant is generally lower, for example, the liquefaction temperature of liquid nitrogen is-196 ℃, and the temperature of liquid carbon dioxide under the condition of 5 atmospheric pressures is-56.55 ℃; it can provide a large amount of cold volumes fast, makes article temperature reduce fast.
In order to achieve the above object, the utility model provides a following technical scheme: a molecular precooling device comprises a box body, wherein an evaporator is arranged in the box body, and the box body is connected with a vacuumizing device; one end of the evaporator is an input end connected with a liquid inert gas supply device, and the other end of the evaporator is a discharge end communicated with the atmosphere outside the box body.
It should be noted that: the box body of the utility model comprises but is not limited to a small box body with a volume below 1 cubic meter, a medium box body with a volume above 1 cubic meter and a storehouse body with a volume above 10 cubic meters.
The box body of the utility model is not limited to the shape, such as a cube, a sphere, an ellipsoid and the like.
In the above molecular precooling apparatus, the liquid inert gas is liquid nitrogen or liquid carbon dioxide.
In the above molecular pre-cooling apparatus, the input end is provided with a first electromagnetic valve, and the discharge end is provided with a second electromagnetic valve.
In the above molecular precooling apparatus, the evacuation device includes a vacuum pump and a pipeline communicated with the interior of the box body, and the pipeline is connected with the vacuum pump.
In the above molecular precooling apparatus, the box body is further provided with a sealing door.
In the above molecular precooling apparatus, the case is provided with a temperature sensor and a pressure sensor.
The molecular precooling equipment further comprises a controller, wherein the controller is respectively and electrically connected with the temperature sensor, the pressure sensor, the first electromagnetic valve, the second electromagnetic valve and the vacuumizing device.
In the above molecular precooling apparatus, the evaporator is an evaporation coil.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses abandoned traditional adoption compressor compression refrigerant and combined vacuum mode to carry out quick precooling to article such as vegetables melon and fruit meal, this scheme adopts the liquid inert gas that can directly arrange outward as the refrigerant, and it gets rid of the compressor from the system, has reduced the complexity of equipment, and inert gas purchase cost is low, and convenient to use is effectively reducing equipment volume, improves the fresh-keeping reliable means of effect of refrigeration. The coolant adopted by the equipment is liquid inert gas, the liquefaction temperature of the coolant is generally lower, for example, the liquefaction temperature of liquid nitrogen is-196 ℃, and the temperature of liquid carbon dioxide under the condition of 5 atmospheric pressures is-56.55 ℃; it can provide a large amount of cold volumes fast, makes article temperature reduce fast.
The utility model discloses a technology is based on this equipment to provide, and its refrigeration is fast.
Drawings
Fig. 1 is a front view of a sealing door according to embodiment 1 of the present invention in a closed state;
fig. 2 is a front view of the sealing door according to embodiment 1 of the present invention in an open state;
fig. 3 is a right side view of embodiment 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-3, a molecular preservation apparatus comprises a box body 1, an evaporator 2 is arranged in the box body 1, and a vacuum-pumping device 3 is arranged on the box body 1; one end of the evaporator 2 is an input end 4 connected with a peripheral liquid inert gas supply device A, and the other end of the evaporator 2 is a discharge end 5 communicated with the atmosphere outside the box body 1.
In practical application, leading-in evaporating coil with liquid inert gas, make the temperature in the box 1 reduce to predetermineeing the temperature, then will treat that fresh-keeping article are put into the box 1 in, start evacuating device 3, make the atmospheric pressure in the box 1 reduce, after reducing to a certain extent, the water on object top layer or inlayer can gasify, water can absorb heat in gasification, make the article temperature reduce, and at this in-process, the temperature in the box 1 is lower, also plays the effect of supplementary cooling.
The liquid inert gas passes through the evaporator 2 and becomes a gas, in the process of which heat is absorbed, and the gas is directly discharged to the atmosphere through the discharge end 5.
By the above-described improvement, the article can be brought to a temperature reduction to a preset temperature, such as 1 ℃, 3 ℃ or 5 ℃, in as short a time as possible.
The device does not expect the temperature of the articles to be reduced to below zero or lower, because the device mainly plays a role in protecting the articles such as food, and if the temperature is too low and water is solidified, the fresh-keeping effect is lost.
Numerous studies have shown that the taste and freshness of vegetables, fruits or meals, if they can be kept as short as possible up to 1-5 c, are preserved to the maximum extent, and the above-mentioned device is an effective device for this purpose.
It should be noted that: in nature, there are not many liquid inert gases that can be selected and are inexpensive, i.e., liquid nitrogen or liquid carbon dioxide.
The temperature of liquid nitrogen under normal pressure is-196 ℃; while liquid carbon dioxide must be kept in a pressurized low temperature state (-56.55 ℃, 515kPa), if liquid carbon dioxide is suitable for this embodiment, it cannot be suddenly depressurized when introduced into the vaporizer 2 from the liquid inert gas supply device, otherwise it becomes dry ice to clog the vaporizer 2, a certain pressure should be maintained in the vaporizer 2, theoretically, the pressure of the liquid inert gas supply device should be significantly higher than 515kPa, the vaporizer 2 should be slightly higher than 515kPa, and the discharge end 5 should be slowly depressurized.
Of course, liquid carbon dioxide is used, which has the unique advantages over liquid nitrogen: the cost is lower, and the cold quantity is larger.
Therefore, liquid nitrogen is preferred in this embodiment. Under the condition of adopting liquid nitrogen, when the product is placed in the box body 1, the vacuum is immediately pumped, and the product can be cooled to 1-5 ℃ within 15-20 minutes, and the traditional fresh-keeping refrigeration mode can last for several hours.
Another advantage of this embodiment is that: the liquid inert gas is directly exhausted to the atmosphere after being gasified and absorbing heat, a compressor is not needed, the occupied area of the equipment can be effectively reduced, and the structure of the equipment can be simplified to the greatest extent.
In this embodiment, the input end 4 is provided with a first electromagnetic valve 6, the discharge end 5 is provided with a second electromagnetic valve 7, the vacuum pumping device 3 comprises a vacuum pump 31 and a pipeline 32 communicated with the interior of the box body 1, and the pipeline 32 is connected with the vacuum pump 31. Theoretically, the more the communication points between the pipe 32 and the inside of the tank 1, the better.
Preferably, the box body 1 is further provided with a sealing door 8, and the box body 1 is internally provided with a temperature sensor 9 and a pressure sensor 10.
In the control process, the device further comprises a controller, and the controller is respectively electrically connected with the temperature sensor 9, the pressure sensor 10, the first electromagnetic valve 6, the second electromagnetic valve 7 and the vacuumizing device 3. The controller controls the first electromagnetic valve 6 and the second electromagnetic valve 7 according to the data of the temperature sensor 9 and the pressure sensor 10 to adjust the liquid nitrogen introduction speed and control the power of the vacuum-pumping device 3.
Preferably, the evaporator 2 is an evaporation coil which is arranged on the inner wall of the box body 1 in a serpentine shape. In practical applications, any optional evaporator 2 is within the protection scope of the present embodiment.
Example 2
A pre-cooling process based on the apparatus of example 1, wherein the liquid inert gas is preferably liquid nitrogen.
The specific process comprises the following steps: introducing liquid nitrogen into the evaporator, placing the article to be precooled into the molecular precooling equipment, starting a vacuumizing device, and cooling the article to 1-5 ℃ after 15-30 min; the vaporized inert gas in the vaporizer is discharged from the discharge end.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The molecular precooling equipment comprises a box body, and is characterized in that an evaporator is arranged in the box body, and the box body is connected with a vacuumizing device; one end of the evaporator is an input end connected with a liquid inert gas supply device, and the other end of the evaporator is a discharge end communicated with the atmosphere outside the box body.
2. The molecular pre-cooling apparatus of claim 1, wherein the liquid inert gas is liquid nitrogen or liquid carbon dioxide.
3. The molecular pre-cooling apparatus of claim 1, wherein the input end is provided with a first solenoid valve, and the discharge end is provided with a second solenoid valve.
4. The molecular precooling apparatus of claim 1, wherein the evacuation device includes a vacuum pump and a conduit in communication with an interior of the tank, the conduit being connected to the vacuum pump.
5. The molecular pre-cooling apparatus of claim 1, wherein the box body is further provided with a sealing door.
6. The molecular pre-cooling apparatus of claim 3, wherein a temperature sensor and a pressure sensor are disposed in the housing.
7. The molecular precooling apparatus of claim 6, further comprising a controller, wherein the controller is electrically connected to the temperature sensor, the pressure sensor, the first solenoid valve, the second solenoid valve, and the vacuum pumping device, respectively.
8. The molecular precooling apparatus of claim 1, wherein the evaporator is an evaporator coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920831800.6U CN210070327U (en) | 2019-06-02 | 2019-06-02 | Molecular precooling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920831800.6U CN210070327U (en) | 2019-06-02 | 2019-06-02 | Molecular precooling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210070327U true CN210070327U (en) | 2020-02-14 |
Family
ID=69456185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920831800.6U Active CN210070327U (en) | 2019-06-02 | 2019-06-02 | Molecular precooling equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210070327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108071A (en) * | 2019-06-02 | 2019-08-09 | 分子冷链(广东)科技有限公司 | A kind of molecule Pre-cooling equipment and pre-cooling technique |
-
2019
- 2019-06-02 CN CN201920831800.6U patent/CN210070327U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108071A (en) * | 2019-06-02 | 2019-08-09 | 分子冷链(广东)科技有限公司 | A kind of molecule Pre-cooling equipment and pre-cooling technique |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105546905A (en) | Refrigeration and freezing device and freezing method thereof | |
| CN103043308A (en) | Moderate oxygen control constant-temperature humidity conditioning storage container | |
| CN112815596A (en) | Hybrid refrigeration system and quick-freezing method thereof | |
| CN210070327U (en) | Molecular precooling equipment | |
| US1927175A (en) | Hydrated solid carbon dioxide and method of making the same | |
| CN100443837C (en) | Multifunction air-conditioning refrigeration freshness retaining system of air refrigeration | |
| CN209214190U (en) | A kind of air-cooled circulating frozen refrigerator of subregion | |
| CN207662039U (en) | Refrigeration device and vehicle with refrigeration device | |
| CN201795650U (en) | Device for pre-cooling leechee in original place | |
| Xiang et al. | Advancements in the development of field precooling of fruits and vegetables with/without phase change materials | |
| CN106376302A (en) | Fruit and vegetable subatmospheric pressure storage apparatus | |
| CN108308266A (en) | A kind of pressure differential vacuum precooling all-in-one machine | |
| CN211503382U (en) | Central kitchen refrigerator | |
| CN114190429B (en) | Integrated air cooling and vacuum cooling fruit and vegetable precooling fresh-keeping system and method applying heat pipe technology | |
| CN207985718U (en) | A kind of fresh-keeping transport device of logistics transportation | |
| CN206324115U (en) | The live cooling device of vehicle-mounted micro-vacuum fruit and vegetable picking | |
| CN207095117U (en) | A kind of cold chain transportation device based on carbon dioxide hydrate | |
| US4307580A (en) | Method and apparatus for refrigeration | |
| CN209290260U (en) | A kind of dry ice air adjusting refrigerated vehicle | |
| CN208783670U (en) | A kind of pressure differential vacuum pre-cooling all-in-one machine | |
| CN110108071A (en) | A kind of molecule Pre-cooling equipment and pre-cooling technique | |
| US20150027141A1 (en) | Batch freezer with cryogenic precooling apparatus and method | |
| CN202521941U (en) | Lithium bromide absorption type vacuum pre-cooling equipment | |
| KR200203175Y1 (en) | Pressure pre-cooler | |
| CN212645067U (en) | Vacuum precooling refrigeration system of vegetables |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |