CN209877473U - Decompression refrigerating device and equipment thereof - Google Patents
Decompression refrigerating device and equipment thereof Download PDFInfo
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- CN209877473U CN209877473U CN201822087342.8U CN201822087342U CN209877473U CN 209877473 U CN209877473 U CN 209877473U CN 201822087342 U CN201822087342 U CN 201822087342U CN 209877473 U CN209877473 U CN 209877473U
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- water
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- inlet pipe
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Abstract
The utility model provides a decompression refrigerating plant and equipment thereof. This decompression refrigerating plant includes: a water tank; a vacuum chamber having an air exhaust hole and a water inlet hole; the water distributor is positioned in the vacuum cavity and is connected with the water tank through a water inlet pipe, and the water inlet pipe extends into the vacuum cavity through the water inlet hole of the vacuum cavity; the steam-water separator is connected with the air suction hole of the vacuum cavity through an air suction pipe and is connected with the water tank through a pipeline; the flow control valve is positioned on the water inlet pipe; the pressure control valve is positioned on the extraction pipe between the vacuum cavity and the steam-water separator; and a vacuum pump connected to the steam-water separator through a pipeline. The utility model discloses a decompression refrigerating plant simple structure, with low costs and safety ring protects.
Description
Technical Field
The utility model relates to a refrigeration field specifically relates to decompression refrigerating plant and equipment thereof.
Background
At present, the basic methods of artificial refrigeration include: vapor compression refrigeration, vapor absorption refrigeration, vapor jet refrigeration, adsorption-type sensible refrigeration, thermoelectric refrigeration, magnetic refrigeration, vortex tube refrigeration, thermoacoustic refrigeration, reduced pressure (vacuum) precooling, and the like. The pressure-reducing precooling technology is mainly applied to precooling and storage of fruits and vegetables, and plays roles in keeping fresh and prolonging storage time. The pressure-reducing (vacuum) precooling equipment mainly comprises a vacuum system, a refrigerating system, a humidifying and ventilating system and a control system in implementation, wherein the vacuum system comprises a vacuum chamber, a vacuum pump, a moisture catcher, a pressure control valve and the like; the control system comprises a programmable controller PLC, a temperature and humidity sensor and a touch screen.
However, the prior art has many technical defects and shortcomings in application: 1. the construction cost of the decompression storage is high: although the technology for developing the storage is greatly developed, the cost per cubic meter is reduced from more than 100 ten thousand yuan to 36 ten thousand yuan, the construction cost of the pressure reduction storage is much higher than that of a common cold storage and an air conditioning storage, and the pressure resistance, the cost and the weight can be better realized by adding a series of pressure resistance measures in the section of a tank body. Nevertheless, there are certain difficulties in the practical spread of this method, which also limit the commercial application of the method; 2. the whole device has a complex structure: the pressure reduction (vacuum) precooling technology mainly comprises a vacuum system, a refrigerating system, a humidifying and ventilating system and a control system in implementation, and the implementation difficulty and the cost of the device are increased virtually; 3. the application range is narrow: the current decompression (vacuum) precooling technology is mainly applied to precooling and storage of fruits and vegetables, plays roles in keeping fresh and prolonging storage time, and is fresh to be applied in other fields; 4. poor safety or environmental protection: the existing common refrigerant has a plurality of defects, such as the air layer polluted by Freon, and explosion can occur when carbon dioxide and ammonia water are improperly treated.
Therefore, a pressure reducing refrigeration device with a simple structure and low cost is needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a simple structure, with low costs decompression refrigerating plant. The decompression refrigerating plant includes: a water tank; a vacuum chamber having an air exhaust hole and a water inlet hole; the water distributor is positioned in the vacuum cavity and is connected with the water tank through a water inlet pipe, and the water inlet pipe extends into the vacuum cavity through the water inlet hole of the vacuum cavity; the steam-water separator is connected with the air suction hole of the vacuum cavity through an air suction pipe and is connected with the water tank through a pipeline; a flow control valve located on the inlet pipe between the water tank and the moisture diverter; the pressure control valve is positioned on the extraction pipe between the vacuum cavity and the steam-water separator; and a vacuum pump connected to the steam-water separator through a pipeline. The air pumping port and the air outlet of the vacuum pump are respectively communicated with the steam-water separator and the atmosphere, the working vacuum degree of the vacuum pump is 100 Pa-3000 Pa, the air pumping speed is 0.1L/s-4L/s, and the vacuum pump can be replaced by a vacuum pump group formed by connecting a plurality of vacuum pumps in series or in parallel according to actual requirements.
Further, in the decompression cooling device, the water tank, the flow control valve and the moisture shunt are connected through a water pipe and a water pipe union; the vacuum pump, the pressure control valve, the steam-water separator and the vacuum pump are connected through an air pipe and an air pipe union.
Furthermore, the decompression refrigerating device comprises a filter which is positioned in the water tank and connected to the end part of the water inlet pipe, and the filter is mainly used for preventing sundries from entering the water pump to cause the damage of the water pump or block the pipeline.
Further, the decompression refrigerating device comprises a second filter, the second filter is arranged on the water inlet pipe between the flow control valve and the moisture shunt, the water outlet of the second filter is connected with the moisture shunt, and the second filter is mainly used for removing impurities in water and preventing the impurities from entering the moisture shunt to be blocked.
Further, the decompression refrigerating device comprises a safety valve, two ends of the safety valve are respectively connected to the water tank and a water inlet pipe connected between the flow control valve and the water tank through pipelines, and the safety valve is used for enabling excessive water to flow back to the water tank through the safety valve when the flow control valve is over-pressurized due to over-fast water flow.
Further, the decompression refrigerating device comprises a moisture disperser which is arranged in the vacuum cavity, and the lower surface of the moisture disperser is in contact with the upper surface of the moisture distributor. The water disperser has good heat conductivity and can quickly absorb water, and the material of the water disperser can be one or more of graphite paper, oil absorption paper, PP cotton, non-woven fabric and material with meshes. The material of the belt mesh is preferably a metal or a plastic material.
Furthermore, the upper surface of the moisture splitter is provided with a plurality of small water outlets or water outlet nozzles, wherein the diameter of each water outlet or the aperture of each water outlet nozzle can be 0.001 mm-0.1 mm.
Further, the pressure control valve and the flow control valve in the pressure reducing refrigeration device can be one or more of a butterfly valve, a ball valve or an electromagnetic valve, and the pressure control valve can control the pressure in the vacuum cavity through a control system.
Further, the vacuum chamber in the reduced pressure chiller can withstand a pressure of 1 atmosphere without plastic deformation. The vacuum cavity can be a cylinder or a square body, and reinforcing ribs can be added on the surface of the vacuum cavity to meet the target requirement. The vacuum cavity can be made of one or more of stainless steel, cast iron and aluminum alloy.
Further, the reduced pressure refrigeration apparatus includes a water pump located on the water inlet pipe between the flow control valve and the water tank to pump water from the water tank to the moisture diverter.
The utility model also provides a decompression refrigeration plant, it includes insulation box and aforementioned decompression refrigerating plant. Further, the insulation box body of the decompression refrigeration equipment comprises an insulation layer, and the material of the insulation layer is selected from one or more of polyurethane foam (PU), polystyrene foam (EPS), polystyrene extruded sheet (XPS), Vacuum Insulation Panel (VIP) and Finland board.
Further, the utility model discloses a decompression refrigerating plant and decompression refrigeration plant can also include heating system additionally, and it mainly contains heating element (carbon fiber heater strip, carbon fiber heating plate, nickel chromium iron chromium aluminium silk etc.), control switch, temperature regulator etc..
Utilize the utility model discloses, through reducing vacuum precooling apparatus's partial component, reduced the construction cost and the complexity of construction of device. The utility model discloses a decompression refrigerating plant can use the device that needs the control by temperature change such as refrigerator carriage, freezer, refrigerator, fresh-keeping show cupboard, and refrigerating plant takes away the heat through the evaporation heat absorption of water, and whole process does not produce any harmful substance, safety ring protects.
Drawings
Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:
fig. 1 is a schematic view of an example embodiment of a reduced-pressure refrigeration unit according to the present invention.
Fig. 2 is a schematic view of another example embodiment of a reduced pressure refrigeration unit according to the present invention.
Figure 3 is a schematic cross-sectional view of an example embodiment of a reduced pressure refrigeration apparatus according to the present invention.
Fig. 4 is a schematic front view of an example embodiment of a reduced pressure refrigeration apparatus according to the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which are exemplary and are intended to illustrate the invention and are not to be construed as limiting the invention, wherein the various elements shown in the drawings are not all necessary and some of them may be omitted.
In fig. 1, a schematic diagram of an example embodiment of a reduced-pressure refrigeration unit 13 of the present invention is illustrated. In the embodiment, the decompression refrigerating device 13 comprises a water storage tank 1, a filter 2, a first electromagnetic valve 3, a vacuum chamber 4, a water inlet pipe 5, an air extraction pipeline 6, a second electromagnetic valve 7, a steam-water separator 8, a vacuum pump 9, a water pump 10 and a safety valve 11, and all the parts are respectively connected through an air pipe or a water pipe.
When the decompression refrigerating plant 13 starts to operate, the first electromagnetic valve 3 and the water pump 10 can be firstly opened (after the vacuum pump is opened, the water pump can be closed so as to save energy), water in the water storage tank 1 is pumped to the water inlet pipe 5 through the filter 2 and the first electromagnetic valve 3 along the water pipe, and then enters the vacuum chamber 4 through a plurality of water outlets on the water inlet pipe 5. If the electromagnetic valve 3 is over-pressurized due to too fast water flow, the excess water flows back to the water storage tank 1 through the second water pipe through the safety valve 11. The vacuum pump 9 and the second solenoid valve 7 can then be opened to begin the evacuation of the vacuum chamber 4. After the vacuum pump 9 is turned on to start pumping, the air in the vacuum chamber 4 is pumped out along the pumping pipeline 6, the second electromagnetic valve 7 and the steam-water separator 8. As the air in the vacuum chamber 4 is evacuated, the vacuum gauge indication value of the vacuum pump 9 is gradually decreased, and the pressure in the vacuum chamber 4 can be adjusted by the second electromagnetic valve 7. As the pressure in the vacuum chamber 4 is reduced, the moisture in the vacuum chamber begins to gradually bubble and vaporize, when the meter on the vacuum pump 10 indicates-0.1 Mpa, the water in the vacuum chamber 4 will be rapidly vaporized into steam, the steam is pumped to the vacuum pump 9 through the air pumping line 6, the electromagnetic valve 7 and the steam-water separator 8, and the vacuum pump 9 is continuously operated to maintain the negative pressure state of-0.1 Mpa in the vacuum chamber 4, and the moisture vaporized in the vacuum chamber 4 is collected in the steam-water separator 8 and flows back to the water storage tank 1 for recycling. Since a large amount of heat is absorbed during the process of changing the liquid into gas, the temperature in the vacuum chamber 4 is reduced to 2-8 ℃. When the temperature in the vacuum chamber 4 is lower than the temperature of the surroundings, the vacuum chamber 4 will absorb heat from the surroundings through the walls of the vacuum chamber 4, thereby achieving the purpose of cooling the surroundings. When the decompression cooling device 13 is continuously operated, it can continuously cool the ambient environment, so that the ambient environment is kept at a relatively low temperature.
In fig. 2, a schematic diagram of another example embodiment of the reduced-pressure refrigeration unit 13 of the present invention is illustrated. This embodiment is substantially the same as the embodiment shown in fig. 1, except that it further includes a moisture disperser 12.
When the decompression cooling device 13 starts to operate, the same manner as the above embodiment may be adopted, that is, the first electromagnetic valve 3 and the water pump are opened, and the vacuum pump 9 and the second electromagnetic valve 7 are closed. Alternatively, the second solenoid valve 7 may be opened first and the first solenoid valve 3 may be closed. In this way, the first solenoid valve 3 is first closed, and the vacuum pump 9 and the second solenoid valve 7 are opened to start vacuum-pumping of the vacuum chamber 4. After the vacuum pump 9 is turned on to start pumping, the air in the vacuum chamber 4 is pumped out along the pumping pipeline 6, the second electromagnetic valve 7 and the steam-water separator 8. As the air in the vacuum chamber 4 is evacuated, the vacuum gauge indication value of the vacuum pump 9 is gradually decreased, the pressure in the vacuum chamber 4 can be adjusted by the second electromagnetic valve 7, and the first electromagnetic valve 3 can be opened when the gauge indication on the vacuum pump 9 is-0.1 MPa. Before the first solenoid valve 3 is opened, the water in the water storage tank 1 is filtered by the filter 2 due to gravity and then flows to the upper end of the solenoid valve 3. After opening the first solenoid valve 3, the water in the reservoir may flow through the first solenoid valve 3 to the water inlet pipe 5 due to the pressure difference across the first solenoid valve 3. In the embodiment shown in fig. 2, a water pump 10 is installed on the water pipe between the first solenoid valve 3 and the water storage valve 1, and the water pump 10 is turned on to facilitate the water in the water storage tank 1 to enter the water inlet pipe 5 through the first solenoid valve 3. If the electromagnetic valve 3 is over-pressurized due to too fast water flow, the excess water flows back to the water storage tank 1 through the second water pipe through the safety valve 11. The water flowing to the water inlet pipe 5 passes through a plurality of water outlets on the water inlet pipe 5 and reaches the water disperser 12 on the water inlet pipe 5 to be dispersed into fine water droplets, and enters the vacuum chamber 4 by the action of vacuum. Since the vacuum chamber 4 is at-0.1 Mpa state at this time, the water droplets coming out of the water inlet pipe 5 will be rapidly vaporized into steam, pumped to the vacuum pump 9 via the air pumping line 6, the second electromagnetic valve 7, the steam-water separator 8, and the vacuum pump 9 is continuously operated to maintain the-0.1 Mpa negative pressure state of the vacuum chamber 4, and the water droplets vaporized in the vacuum chamber 4 are collected in the steam-water separator 8 and flow back to the water storage tank 1 for recycling. Since a large amount of heat is absorbed during the process of changing the liquid into gas, the temperature in the vacuum chamber 4 is reduced to 2-8 ℃. When the temperature in the vacuum chamber 4 is lower than the temperature of the surroundings, the vacuum chamber 4 will absorb heat from the surroundings through the walls of the vacuum chamber 4, thereby achieving the purpose of cooling the surroundings. When the decompression cooling device 13 is continuously operated, it can continuously cool the ambient environment, so that the ambient environment is kept at a relatively low temperature.
In fig. 3, a schematic cross-sectional view of an exemplary embodiment of a reduced pressure refrigeration apparatus of the present invention is illustrated. As shown in fig. 3, a plurality of decompression refrigeration units 13 of the present invention are uniformly distributed on three inner walls of the thermal insulation box 14, thereby cooling the thermal insulation box.
In fig. 4, a schematic front view of an exemplary embodiment of a reduced-pressure refrigeration apparatus of the present invention is illustrated. As shown in fig. 4, a plurality of decompression refrigeration units 13 of the present invention are uniformly distributed on the inner wall of the thermal insulation box 14, thereby cooling the thermal insulation box.
Claims (9)
1. A reduced-pressure refrigeration apparatus, characterized by comprising:
a water tank;
a vacuum chamber having an air exhaust hole and a water inlet hole;
the water distributor is positioned in the vacuum cavity and is connected with the water tank through a water inlet pipe, and the water inlet pipe extends into the vacuum cavity through the water inlet hole of the vacuum cavity;
the steam-water separator is connected with the air exhaust hole of the vacuum cavity through an air exhaust pipe and is connected with the water tank through a pipeline;
the flow control valve is positioned on the water inlet pipe;
the pressure control valve is positioned on the extraction pipe between the vacuum cavity and the steam-water separator; and
a vacuum pump connected to the steam-water separator through a pipeline.
2. A reduced pressure chiller as claimed in claim 1 further comprising a water pump on said inlet conduit between said flow control valve and said water tank.
3. A reduced pressure refrigeration apparatus as set forth in claim 1 further including a filter located within said tank and connected to the end of said inlet pipe.
4. A reduced pressure refrigeration apparatus as set forth in claim 1 further including a second filter disposed on said inlet conduit between said flow control valve and said moisture diverter.
5. The reduced pressure refrigeration apparatus according to claim 1, further comprising a relief valve connected at both ends thereof to the water tank and to a water inlet pipe between the flow control valve and the water tank, respectively, through a pipeline.
6. The reduced pressure refrigeration apparatus according to claim 1, further comprising a moisture disperser installed within the vacuum cavity, and a lower surface of the moisture disperser being in contact with an upper surface of the moisture diverter.
7. The decompression refrigeration device according to claim 1, wherein the upper surface of the moisture splitter has a plurality of water outlets or water outlet nozzles, and the diameter of the water outlets or the diameter of the water outlet nozzles is 0.001mm to 0.1 mm.
8. A reduced-pressure refrigeration apparatus according to claim 1 wherein said vacuum chamber surface has ribs.
9. A reduced-pressure refrigeration apparatus comprising a thermal insulated cabinet, characterized in that it further comprises one or more reduced-pressure refrigeration devices according to claims 1-8, located inside said thermal insulated cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822087342.8U CN209877473U (en) | 2018-12-13 | 2018-12-13 | Decompression refrigerating device and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822087342.8U CN209877473U (en) | 2018-12-13 | 2018-12-13 | Decompression refrigerating device and equipment thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209877473U true CN209877473U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822087342.8U Expired - Fee Related CN209877473U (en) | 2018-12-13 | 2018-12-13 | Decompression refrigerating device and equipment thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN209877473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076475A (en) * | 2020-08-21 | 2022-02-22 | 汉达精密电子(昆山)有限公司 | Cooling system and method for mold |
-
2018
- 2018-12-13 CN CN201822087342.8U patent/CN209877473U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076475A (en) * | 2020-08-21 | 2022-02-22 | 汉达精密电子(昆山)有限公司 | Cooling system and method for mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20191231 Termination date: 20201213 |