WO2017219694A1 - 冷藏冷冻设备 - Google Patents
冷藏冷冻设备 Download PDFInfo
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- WO2017219694A1 WO2017219694A1 PCT/CN2017/074604 CN2017074604W WO2017219694A1 WO 2017219694 A1 WO2017219694 A1 WO 2017219694A1 CN 2017074604 W CN2017074604 W CN 2017074604W WO 2017219694 A1 WO2017219694 A1 WO 2017219694A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
- B01D53/053—Pressure swing adsorption with storage or buffer vessel
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/0438—Physical processing only by making use of membranes
- C01B21/0444—Physical processing only by making use of membranes characterised by the membrane
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/045—Physical processing only by adsorption in solids
- C01B21/0455—Physical processing only by adsorption in solids characterised by the adsorbent
- C01B21/0461—Carbon based materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
- F25D23/126—Water cooler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/116—Molecular sieves other than zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/10—Nitrogen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/104—Oxygen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40035—Equalization
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/402—Further details for adsorption processes and devices using two beds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0001—Separation or purification processing
- C01B2210/0009—Physical processing
- C01B2210/0014—Physical processing by adsorption in solids
- C01B2210/0015—Physical processing by adsorption in solids characterised by the adsorbent
- C01B2210/0017—Carbon-based materials
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0045—Oxygen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/061—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation through special compartments
Definitions
- the invention relates to the field of article storage, and in particular to a refrigerating and freezing device.
- the present invention has been made in order to provide a refrigerating and freezing apparatus that overcomes the above problems or at least partially solves the above problems.
- a further object of the invention is to enable a refrigerated freezer to maintain the biological activity of the food.
- Another further object of the present invention is to miniaturize the nitrogen generator of a refrigerating and freezing apparatus.
- a refrigerating and freezing apparatus comprising: a casing defining a storage compartment, a first sealed space and a second sealed space being disposed inside the storage compartment; and a nitrogen generating device,
- the utility model comprises an adsorption device and a pneumatic compressor, the air compressor is controlled to supply compressed air to the adsorption device, and the adsorption device is configured to prepare nitrogen gas for supplying to the first closed space and for supplying to the second closed space by using compressed air. Oxygen-rich gas.
- the adsorption device further includes: a first cylinder defining a first adsorption chamber and a nitrogen chamber separated from each other, wherein the nitrogen chamber communicates with the first sealed space; and the second barrel defines an interior thereof An isolated second adsorption chamber and an air chamber; and the air compressor communicates with the air chamber through the air intake tube to controlably supply compressed air to the air chamber; the first adsorption chamber and the second adsorption chamber are each provided with a carbon molecular sieve, air
- the storage tank alternately supplies compressed air to the first adsorption tank and the second adsorption tank, so that one of the first adsorption tank and the second adsorption tank adsorbs oxygen-rich gas to prepare nitrogen gas, and another adsorption tank pair completes adsorption.
- the carbon molecular sieve is desorbed, wherein the adsorption chamber for preparing nitrogen is connected to the nitrogen chamber, and the adsorption chamber for desorption is connected to the second sealed space.
- the nitrogen generator further comprises: a gas path reversing valve having five gas delivery ports, wherein the first gas delivery port is connected to the first adsorption reservoir, and the second gas delivery port is connected to the second adsorption reservoir, and the third The air inlet port communicates with the air chamber, and the air path switching valve is further configured to alternately connect the third air inlet to the first air outlet and the second air outlet, and when the third air outlet is connected to the first air outlet
- the fourth gas delivery port is connected to the second gas delivery port, the air storage chamber supplies compressed air to the first adsorption chamber, and the fourth gas delivery port discharges the oxygen-enriched gas desorbed by the second adsorption chamber, and the third gas delivery port
- the fifth gas delivery port is connected to the first gas delivery port
- the air storage chamber supplies compressed air to the second adsorption storage chamber
- the fifth gas delivery port discharges the oxygen-enriched gas desorbed by the first adsorption storage tank.
- the nitrogen generator further includes: a tee pipe connecting the fourth gas outlet port and the fifth gas delivery port, and configured to combine the fourth gas outlet port and the fifth gas delivery port into one oxygen-rich gas exhaust gas mouth.
- the nitrogen generator further comprises: a three-way solenoid valve having three vents, the first vent of which communicates with the oxygen-enriched gas exhaust port through the oxygen-rich gas output pipe, and the second vent port communicates with the second seal a space, the third vent communicates with the outside air of the refrigerating and freezing device; and the first vent selectively communicates with the second vent or the third vent, and in the case where the first vent communicates with the second vent, the oxygen is rich The body is transported to the inside of the second sealed space, and in the case where the first vent is connected to the third vent, the oxygen-rich gas is discharged to the outside air.
- a three-way solenoid valve having three vents, the first vent of which communicates with the oxygen-enriched gas exhaust port through the oxygen-rich gas output pipe, and the second vent port communicates with the second seal a space, the third vent communicates with the outside air of the refrigerating and freezing device; and the first vent selectively communicates with the second vent or the third vent, and in the case where the first vent
- the nitrogen generator further includes: a connecting pipe connecting the first adsorption tank and the second adsorption tank; and a pressure equalizing valve serially connected to the connecting pipe and configured to be in the first adsorption tank and the second adsorption tank One of the stops adsorbs and prepares to desorb when the connecting pipe is opened to equalize the internal pressure of the first adsorption tank and the second adsorption tank.
- the nitrogen generator further comprises: a first outlet pipe connecting the first adsorption tank and the nitrogen chamber; a second outlet pipe connecting the second adsorption chamber and the nitrogen chamber; and two check valves respectively disposed at the first
- the air outlet pipe and the second air outlet pipe are configured to allow gas to flow in one direction from the first adsorption tank or the second adsorption tank toward the nitrogen chamber to prevent gas backflow in the nitrogen chamber.
- the nitrogen generator further includes: a water-oil separator disposed on the air intake pipe and configured to Filter the air entering the air compartment.
- the first cylinder and the second cylinder are arranged side by side inside the refrigerating and freezing equipment, the first adsorption tank and the nitrogen chamber are arranged along the extending direction of the first cylinder, and the second adsorption tank and the air chamber are along the second cylinder.
- the extending direction of the body is arranged;
- the first adsorption tank and the second adsorption chamber are respectively adjacent to the ends of the first cylinder and the second cylinder in the same direction, and the nitrogen chamber and the air chamber are respectively adjacent to the other end of the first cylinder and the second cylinder in the same direction. .
- the present invention provides a refrigerating and freezing apparatus in which an internal storage space is provided with a first sealed space and a second sealed space.
- the refrigerating and freezing apparatus is also provided with a nitrogen generating device.
- the nitrogen generator includes an adsorption device and an air compressor, and the adsorption device is configured to prepare nitrogen gas for supplying to the first sealed space and oxygen-rich gas for supplying to the second closed space by using compressed air supplied from the air compressor. .
- the refrigerating and freezing apparatus of the present invention increases the oxygen content of the second sealed space by supplying an oxygen-rich gas to the second sealed space, so that the refrigerating and freezing apparatus can ensure the biological activity of the food in the second sealed space.
- the first sealed space is filled with nitrogen gas, which improves the fresh-keeping ability of the first sealed space, and the nitrogen gas and the remaining oxygen-enriched gas produced by the nitrogen generator are used for preservation and preservation of the refrigerating and freezing equipment, respectively, and the system is fully utilized.
- the function of the nitrogen plant and the saving of air feedstock are used for preservation and preservation of the refrigerating and freezing equipment, respectively, and the system is fully utilized.
- the refrigerating and freezing apparatus of the present invention wherein the nitrogen generating device integrates the first adsorption tank and the nitrogen chamber into a first cylinder, and integrates the second adsorption chamber and the air tank into a second cylinder, thereby simplifying the nitrogen generating device Structure.
- the main body of the entire nitrogen generator has only two cylinders, and the miniaturization of the nitrogen generator is realized so as to be disposed inside the storage device.
- FIG. 1 is a schematic view of a refrigerating and freezing apparatus according to an embodiment of the present invention
- FIG. 2 is a schematic view of a nitrogen generator of a refrigerating and freezing apparatus according to an embodiment of the present invention
- FIG. 3 is a schematic view showing a direction of a pneumatic directional control valve of a refrigerating and freezing apparatus according to an embodiment of the present invention
- FIG. 4 is a schematic view showing another direction of a pneumatic directional control valve of a refrigerating and freezing apparatus according to an embodiment of the present invention
- Figure 5 is a schematic illustration of the control principle of a pneumatic reversing valve of a refrigerating and freezing apparatus in accordance with one embodiment of the present invention.
- FIG. 1 is a schematic view of a refrigerating and freezing apparatus according to an embodiment of the present invention.
- the refrigerating and freezing apparatus may be a refrigerating apparatus such as a refrigerator or a freezer, and includes a tank 10 and a nitrogen generator 13.
- the casing 10 defines a storage compartment, and the interior of the storage compartment is provided with a first sealed space 11 and a second sealed space 12.
- the inside of the first sealed space 11 is filled with nitrogen gas for preserving the food inside thereof, and the first sealed space 11 can be used for storing vegetables, fruits and the like.
- the inside of the second sealed space 12 is filled with an oxygen-rich gas for maintaining the biological activity of the food therein, and the second sealed space 12 can be used for storing aquatic products such as fish.
- the nitrogen generator 13 of the present embodiment uses the PSA nitrogen production method to remove oxygen in the air to produce pure nitrogen.
- PSA Pressure Swing Adsorption is currently a mainstream technology for producing gases. Pressure swing adsorption specifically refers to pressurizing the mixed gas under the condition of constant temperature, and adsorbing excess impurity gas by the adsorbent to obtain a relatively pure single gas, and then using reduced pressure (vacuum) or atmospheric pressure. The method desorbs the impurity gas in the adsorbent to make secondary use of the adsorbent.
- Carbon molecular sieve is a common adsorbent for achieving oxygen-nitrogen separation and extracting nitrogen from air.
- the PSA nitrogen production method utilizes this principle to produce pure nitrogen by using air as a raw material and using pressure swing adsorption technology to selectively adsorb oxygen and nitrogen by carbon molecular sieves to separate nitrogen and oxygen in the air.
- the nitrogen generator 13 of the present embodiment fills the remaining air after nitrogen production, that is, oxygen-enriched gas, into the second sealed space 12 to maintain the biological activity of the food therein and to ensure the cleanliness of the food.
- the nitrogen generator 13 of the present embodiment includes an adsorption device 21 and an air compressor 20, wherein the air compressor 20 is configured to supply compressed air to the adsorption device 21 in a controlled manner, and the adsorption device 21 is configured to be prepared by using compressed air for supply to the first Nitrogen in a confined space 11 and an oxygen-rich gas for supplying to the second enclosed space 12.
- the refrigerating and freezing apparatus of the present invention increases the nitrogen content of the first sealed space 11 and the oxygen content of the second sealed space 12 by supplying nitrogen gas to the first sealed space 11 and supplying oxygen-enriched gas to the second sealed space 12, so that the refrigeration is frozen.
- the device can improve the fresh-keeping ability of the first sealed space 11 and ensure the biological activity of the food in the second sealed space 12.
- the adsorption device 21 in this embodiment further includes a first cylinder 211 and a second cylinder 212.
- the first cylinder 211 defines a first adsorption tank 213 and a nitrogen chamber 214 separated from each other, and the nitrogen chamber 214 communicates with the first sealed space 11;
- the second cylinder 212 defines a second adsorption chamber 215 and an air chamber separated from each other. 216.
- the air compressor 20 communicates with the air tank 216 through the air intake pipe to controlly supply compressed air to the air tank 216; the first adsorption tank 213 and the second adsorption tank 215 are each provided with a carbon molecular sieve, and the air tank 216 is controlled alternately.
- the first adsorption tank 213 and the second adsorption tank 215 are supplied with compressed air, so that one of the first adsorption tank 213 and the second adsorption tank 215 adsorbs the oxygen-rich gas to prepare nitrogen gas, and the other adsorption tank completes the adsorption.
- the carbon molecular sieve is desorbed.
- the adsorption chamber for preparing nitrogen gas is connected to the nitrogen chamber 214, and the adsorption chamber for desorption is connected to the second sealed space 12.
- the air compressor 20 supplies compressed air to the first adsorption chamber 213, the air pressure in the first adsorption chamber 213 rises, the carbon molecular sieve inside adsorbs the oxygen-rich gas in the air, and the remaining nitrogen gas is input into the nitrogen chamber.
- nitrogen gas is further introduced into the first sealed space 11 by the nitrogen chamber 214.
- the air pressure in the second adsorption chamber 215 is lowered, and the carbon molecular sieve inside thereof desorbs the adsorbed oxygen-rich gas and supplies it to the second sealed space 12.
- the nitrogen generating device 13 of the present embodiment integrates the first adsorption chamber 213 and the nitrogen chamber 214 into a first cylinder 211, and integrates the second adsorption chamber 215 and the air chamber 216 into a second cylinder 212, compared to conventional nitrogen production.
- the device 13 simplifies the structure and realizes miniaturization of the nitrogen generator 13.
- the nitrogen generator 13 of the present embodiment further includes a gas passage switching valve 22.
- 3 is a schematic view showing one direction of the air passage switching valve 22 of the refrigerating and freezing apparatus according to an embodiment of the present invention
- FIG. 4 is a schematic view showing another direction of the air passage switching valve 22 of the refrigerating and freezing apparatus according to an embodiment of the present invention.
- the gas path switching valve 22 has five gas delivery ports, the first gas delivery port 221 communicates with the first adsorption reservoir 213, the second gas delivery port 222 communicates with the second adsorption reservoir 215, and the third gas delivery port 223 communicates with the air.
- Warehouse 216 communicates with the air.
- the gas path switching valve 22 is also configured such that the third gas delivery port 223 alternately communicates with the first gas delivery port 221 and the second gas delivery port 222.
- the third air inlet 223 communicates with the first gas delivery port 221
- the fourth gas delivery port 224 communicates with the second gas delivery port 222
- the air storage chamber 216 supplies compressed air to the first adsorption reservoir 213, and is supplied by the fourth gas delivery port.
- the port 224 discharges the oxygen-enriched gas desorbed by the second adsorption chamber 215; when the third gas delivery port 223 communicates with the second gas delivery port 222, the fifth gas delivery port 225 communicates with the first gas delivery port 221, and the air storage chamber 216
- the second adsorption chamber 215 supplies compressed air, and is discharged from the fifth adsorption port 225 by the oxygen-enriched gas desorbed by the first adsorption chamber 213.
- the air passage switching valve 22 in this embodiment is a three-position five-way solenoid valve
- FIG. 5 is a schematic diagram showing the control principle of the air passage switching valve of the refrigerating and freezing apparatus according to an embodiment of the present invention.
- Pneumatic reversing valve 22 There is a first coil 226 and a second coil 227. When the first coil 226 is energized, the third air inlet 223 communicates with the first air inlet 221, the fourth air inlet 224 communicates with the second air inlet 222, and the air enters the first adsorption chamber 213 by the air chamber 216, first The internal pressure of the adsorption chamber 213 is increased, and the carbon molecular sieve adsorbs the oxygen-rich gas.
- the air chamber 216 stops supplying air to the second adsorption chamber 215, the air pressure in the second adsorption chamber 215 is lowered, and desorption is started, and the oxygen-enriched gas desorbed by the second adsorption chamber 215 enters the air path reversing valve through the second gas delivery tube. Within 22, it is finally discharged by the fourth gas delivery port 224.
- the communication mode is changed accordingly, and the first adsorption chamber 213 is desorbed and the second adsorption chamber 215 is adsorbed, which is not described herein.
- the first air inlet 221 and the second air inlet 222 are both closed, and the air chamber 216 does not supply air to the first adsorption tank 213 and the second adsorption tank 215.
- the nitrogen generator 13 of the present embodiment further includes a tee pipe 23.
- the tee 23 communicates with the fourth gas delivery port 224 and the fifth gas delivery port 225, and is configured to combine the two gas delivery ports (ie, the fourth gas delivery port 224 and the fifth gas delivery port 225) into one oxygen-rich gas.
- the oxygen-enriched gas generated by the nitrogen generator 13 of the present embodiment is alternately discharged from the fourth gas delivery port 224 and the fifth gas delivery port 225, and the three-way pipe 23 collects the oxygen gas discharged from the two gas delivery ports together, and then The oxygen-rich gas exhaust port 231 is discharged.
- the nitrogen generator 13 of the present embodiment further includes a three-way solenoid valve 24.
- the three-way solenoid valve 24 has three vents, and the first vent 241 communicates with the oxygen-enriched gas exhaust port 231 through the oxygen-rich gas output pipe, and the second vent port 242 communicates with the second sealed space 12, and the third vent thereof 243 Connect the outside air of the refrigerating and freezing equipment.
- the first vent 241 selectively communicates with the second vent 242 or the third vent 243, and in the case where the first vent 241 communicates with the second vent 242, the oxygen-enriched gas is delivered to the inside of the second sealed space 12, In the case where the first vent 241 communicates with the third vent 243, the oxygen-rich gas is discharged to the outside air.
- the refrigerating and freezing apparatus of the present embodiment can selectively charge the oxygen-enriched gas generated by the nitrogen generating unit 13 into the outside air of the second sealed space 12 or the refrigerating and freezing apparatus.
- the second vent 242 communicates with the inside of the second sealed space 12, and when the first vent 241 of the three-way solenoid valve 24 communicates with the second vent 242, the oxygen-rich gas is discharged from the second vent 242 and is input to the second sealed space 12 internal.
- the third vent 243 of the three-way solenoid valve 24 communicates with the outside of the refrigerating and freezing apparatus. When the first vent 241 communicates with the third vent 243, the oxygen-enriched gas is discharged into the outside air by the third vent 243.
- the discharge of oxygen-rich gas into the outside air can increase the oxygen concentration in the user's room and improve the user's comfort.
- the nitrogen generator 13 further includes a connecting pipe 25 and a pressure equalizing valve 26.
- the connecting pipe 25 communicates with the first adsorption tank 213 and the second adsorption tank 215.
- the pressure equalizing valve 26 is serially connected to the connecting pipe 25 and configured to be in the first When one of the adsorption tank 213 and the second adsorption tank 215 stops adsorbing and prepares to desorb, the connection pipe 25 is opened to equalize the air pressure inside the first adsorption tank 213 and the second adsorption tank 215.
- the second adsorption chamber 215 ends the desorption process, ready to enter the adsorption process, at which time the pressure equalization valve 26 is opened, the first adsorption chamber 213 and the first The two adsorption chambers 215 are in communication. Since the first adsorption chamber 213 is in a high air pressure state, the second adsorption chamber 215 is in a low air pressure state, and the gas in the first adsorption chamber 213 rapidly flows into the second adsorption chamber 215, and the internal pressures of the two adsorption chambers are the same. The air pressure in the first adsorption chamber 213 drops rapidly, which is favorable for subsequent desorption, and the air pressure in the second adsorption chamber 215 rises rapidly, which is favorable for subsequent oxygen adsorption.
- the nitrogen generator 13 further includes a first air outlet pipe 271, a second air outlet pipe 272, and two check valves 28.
- the first air outlet pipe 271 communicates with the first adsorption tank 213 and the nitrogen gas tank 214.
- the second outlet pipe 272 is connected to the second adsorption tank 215 and the nitrogen tank 214.
- the first adsorption chamber 213 and the second adsorption chamber 215 will generate nitrogen gas into the nitrogen chamber 214 through the above two tubes.
- Two check valves 28 are respectively disposed on the first air outlet pipe 271 and the second air outlet pipe 272 to allow gas to flow in one direction from the first adsorption tank 213 or the second adsorption tank 215 toward the nitrogen gas tank 214 to prevent the nitrogen gas tank 214 from flowing. Internal gas reflux.
- the nitrogen generator 13 further includes a water separator, and the oil water separator is disposed on the air intake pipe to filter the air entering the air tank 216.
- an air intake filter is added to the suction end of the air compressor 20 to remove impurities from the air to prevent the carbon molecular sieve from deactivating.
- first cylinder 211 and the second cylinder 212 are juxtaposed inside the casing 10 of the refrigerating and freezing apparatus, and one ends of the first adsorption tank 213 and the second adsorption tank 215 are disposed in the same direction, and the air One end of the bin 216 and the nitrogen bunker 214 are oriented in the other direction to facilitate pipe routing. That is, the first adsorption chamber 213 and the nitrogen chamber 214 are arranged in the extending direction of the first cylinder 211, and the second adsorption chamber 215 and the air chamber 216 are arranged in the extending direction of the second cylinder 212.
- first adsorption chamber 213 at the end of the first cylindrical body 211 is disposed in the same direction as the end of the second adsorption chamber 215 at the end of the second cylindrical body 212, and the nitrogen chamber 214 is located at the end of the first cylindrical body 211.
- One end is disposed in the same direction as the end of the air chamber 216 at the end of the second cylinder 212.
- the first adsorption chamber 213 and the second adsorption chamber 215 are respectively adjacent to the ends of the first cylinder 211 and the second cylinder 212 in the same direction
- the nitrogen chamber 214 and the air chamber 216 are adjacent to the first cylinder 211 and The other end of the second cylinder 212 in the same direction.
- the present embodiment provides a refrigerating and freezing apparatus in which an internal storage space is provided with a first sealed space 11 and a second sealed space 12.
- the refrigerating and freezing apparatus is also provided with a nitrogen generator 13.
- the nitrogen generator 13 includes an adsorption device 21 configured to be prepared using compressed air for supply to the first dense The nitrogen in the closed space 11 and the oxygen-rich gas for supplying to the second closed space 12.
- the refrigerating and freezing apparatus of the present invention increases the oxygen content of the second sealed space 12 by supplying the oxygen-enriched gas to the second sealed space 12, thereby ensuring the biological activity of the food in the second sealed space 12.
- the first sealed space 11 is filled with nitrogen gas, which improves the fresh-keeping ability of the first sealed space 11.
- the nitrogen gas and the remaining oxygen-enriched gas produced by the nitrogen generator 13 are used for preservation and preservation of the refrigerating and freezing equipment, respectively, and fully utilized.
- the function of the nitrogen generator 13 is saved, and the air raw material is saved.
- the nitrogen generator 13 integrates the first adsorption tank 213 and the nitrogen chamber 214 into the first cylinder 211, and the second adsorption tank 215 and the air tank 216 into the second cylinder. 212, thereby simplifying the structure of the nitrogen generator 13.
- the main body of the entire nitrogen generator 13 has only two cylinders, and the miniaturization of the nitrogen generator 13 is realized so as to be disposed inside the storage device.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Separation Of Gases By Adsorption (AREA)
- Storage Of Fruits Or Vegetables (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Claims (9)
- 一种冷藏冷冻设备,包括:箱体,其内限定有储物间室,所述储物间室内部设置有第一密封空间和第二密封空间;以及制氮装置,其包括吸附装置以及空压机,所述空压机配置成受控地向所述吸附装置提供压缩空气,所述吸附装置配置成利用压缩空气制备用于提供至所述第一密闭空间的氮气和用于提供至所述第二密闭空间的富氧气体。
- 根据权利要求1所述的冷藏冷冻设备,其中,所述吸附装置还包括:第一筒体,其内部限定有相互隔离的第一吸附仓以及氮气仓,所述氮气仓连通所述第一密封空间;第二筒体,其内部限定有相互隔离的第二吸附仓以及空气仓;并且所述空压机通过空气进气管连通所述空气仓,以受控地向所述空气仓提供压缩空气;所述第一吸附仓和所述第二吸附仓内均设置有碳分子筛,所述空气仓受控地交替向所述第一吸附仓和所述第二吸附仓提供压缩空气,使所述第一吸附仓和所述第二吸附仓中的一个吸附仓吸附富氧气体以制备氮气时,另一个吸附仓对完成吸附的所述碳分子筛进行解吸,其中制备氮气的吸附仓连通至所述氮气仓,进行解吸的吸附仓连通至所述第二密封空间。
- 根据权利要求2所述的冷藏冷冻设备,其中,所述制氮装置还包括:气路换向阀,具有五个输气口,其第一输气口连通所述第一吸附仓,其第二输气口连通所述第二吸附仓,其第三输气口连通所述空气仓,并且所述气路换向阀还配置成使所述第三输气***替地连通所述第一输气口以及所述第二输气口,在所述第三输气口连通所述第一输气口时,其第四输气口连通所述第二输气口,所述空气仓向所述第一吸附仓提供压缩空气,并由所述第四输气口排出所述第二吸附仓解吸出的富氧气体,在所述第三输气口连通所述第二输气口时,其第五输气口连通所述第一输气口,所述空气仓向所述第二吸附仓提供压缩空气,并由所述第五输气口排出所述第一吸附仓解吸出的富氧气体。
- 根据权利要求3所述的冷藏冷冻设备,其中,所述制氮装置还包括:三通管,连通所述第四输气口和所述第五输气口,并配置成将所述第四输气口和所述第五输气口合并为一个富氧气体排气口。
- 根据权利要求4所述的冷藏冷冻设备,其中,所述制氮装置还包括:三通电磁阀,其具有三个通气口,其第一通气口通过富氧气体输出管连通所述富氧气体排气口,其第二通气口连通所述第二密封空间,其第三通气口连通所述冷藏冷冻设备的外界空气;并且所述第一通气口可选择地连通所述第二通气口或所述第三通气口,在所述第一通气口连通所述第二通气口的情况下,富氧气体输送至所述第二密封空间内部,在所述第一通气口连通所述第三通气口的情况下,富氧气体排放至所述外界空气。
- 根据权利要求2所述的冷藏冷冻设备,其中,所述制氮装置还包括:连接管,连通所述第一吸附仓与所述第二吸附仓;以及均压阀,串接在所述连接管上,并配置成在所述第一吸附仓与所述第二吸附仓中的一个停止吸附并准备解吸时打开所述连接管,以使得所述第一吸附仓与所述第二吸附仓内部气压均衡。
- 根据权利要求2所述的冷藏冷冻设备,其中,所述制氮装置还包括:第一出气管,连通所述第一吸附仓和所述氮气仓;第二出气管,连通所述第二吸附仓和所述氮气仓;以及两个单向阀,分别设置于所述第一出气管、所述第二出气管上,配置成,允许气体由所述第一吸附仓或所述第二吸附仓朝向所述氮气仓单向流通,以防止所述氮气仓内气体回流。
- 根据权利要求2所述的冷藏冷冻设备,其中,所述制氮装置还包括:油水分离器,设置于所述空气进气管上,配置成对进入所述空气仓的空气进行过滤。
- 根据权利要求2所述的冷藏冷冻设备,其中所述第一筒体和所述第二筒体并排设置于所述冷藏冷冻设备内部,所述 第一吸附仓和所述氮气仓沿所述第一筒体的延伸方向排列布置,所述第二吸附仓和所述空气仓沿所述第二筒体的延伸方向排列布置;且所述第一吸附仓和所述第二吸附仓分别邻近所述第一筒体和所述第二筒体的同一方向的端部,所述氮气仓和所述空气仓分别邻近所述第一筒体和所述第二筒体的同一方向的另一端部。
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KR1020187031583A KR102142203B1 (ko) | 2016-06-20 | 2017-02-23 | 냉장 냉동 디바이스 |
JP2018560935A JP6665320B2 (ja) | 2016-06-20 | 2017-02-23 | 冷蔵冷凍機器 |
US16/302,089 US10890369B2 (en) | 2016-06-20 | 2017-02-23 | Refrigerating and freezing device |
EP17814433.3A EP3473956B1 (en) | 2016-06-20 | 2017-02-23 | Refrigeration and freezing device |
AU2017282744A AU2017282744B2 (en) | 2016-06-20 | 2017-02-23 | Refrigerating and freezing device |
RU2018141470A RU2716113C1 (ru) | 2016-06-20 | 2017-02-23 | Холодильное и морозильное устройство |
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CN201610443121.2A CN106115637B (zh) | 2016-06-20 | 2016-06-20 | 冷藏冷冻设备 |
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US (1) | US10890369B2 (zh) |
EP (1) | EP3473956B1 (zh) |
JP (1) | JP6665320B2 (zh) |
KR (1) | KR102142203B1 (zh) |
CN (1) | CN106115637B (zh) |
AU (1) | AU2017282744B2 (zh) |
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CN106115637B (zh) | 2016-06-20 | 2018-04-20 | 青岛海尔股份有限公司 | 冷藏冷冻设备 |
CN113446800B (zh) * | 2020-03-24 | 2022-05-31 | 合肥华凌股份有限公司 | 保鲜装置及冰箱 |
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- 2017-02-23 AU AU2017282744A patent/AU2017282744B2/en active Active
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JP6665320B2 (ja) | 2020-03-13 |
AU2017282744A1 (en) | 2018-11-22 |
US20190145691A1 (en) | 2019-05-16 |
US10890369B2 (en) | 2021-01-12 |
AU2017282744B2 (en) | 2019-09-26 |
JP2019518190A (ja) | 2019-06-27 |
EP3473956B1 (en) | 2020-06-24 |
RU2716113C1 (ru) | 2020-03-05 |
EP3473956A1 (en) | 2019-04-24 |
CN106115637B (zh) | 2018-04-20 |
CN106115637A (zh) | 2016-11-16 |
EP3473956A4 (en) | 2019-04-24 |
KR102142203B1 (ko) | 2020-08-07 |
KR20180133875A (ko) | 2018-12-17 |
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