CN212274420U - Ultra-low temperature vacuum freeze dryer - Google Patents
Ultra-low temperature vacuum freeze dryer Download PDFInfo
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- CN212274420U CN212274420U CN202020052473.7U CN202020052473U CN212274420U CN 212274420 U CN212274420 U CN 212274420U CN 202020052473 U CN202020052473 U CN 202020052473U CN 212274420 U CN212274420 U CN 212274420U
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Abstract
The utility model relates to an ultra-low temperature vacuum freeze dryer relates to material drying equipment, especially material freeze drying equipment, including refrigerating system, cold and hot system, vacuum system and real empty room, characterized in that: refrigerating system comprises precooling system and cryrogenic system, the precooling system is including precooling compressor, precooling regenerator of group, the cryrogenic system is including cryrogenic compressor of group, intercooler, cryrogenic regenerator of group, evaporimeter, the cold and hot system is including the cold and hot compressor of group, cross valve, cold and hot material layer board, the middle part in the vacuum chamber is arranged in to cold and hot material layer board, the both sides of cold and hot material layer board are arranged in to the evaporimeter, vacuum system connects real empty room's top, the utility model discloses a precooling system 1 and 2 two systems of cryrogenic system overlap and realize that minimum temperature reaches-85 ℃, and ultra-low temperature vacuum freezes the technique, prevents that the material from "melting back" when the heating, reduces the refrigeration time simultaneously, improves refrigeration efficiency.
Description
Technical Field
The utility model relates to a material drying equipment, especially material freeze drying equipment.
Background
The freeze drying mechanism of the vacuum freeze dryer is that the material to be dried is firstly frozen to be below the eutectic point, so that the water in the material is changed into solid ice, and then the ice is directly sublimated into water vapor to be removed by heating in a proper vacuum environment, so that a dried product is obtained.
The structure of the sample is not destroyed during the freeze-drying process because the solid components are supported by the strong ice in their place, which leaves pores in the dried remaining mass as the ice sublimes, thus preserving the integrity of the biological and chemical structure and activity of the product.
However, the vacuum freeze-drying has very high requirements on freezing temperature, the material is frozen to at least-40 ℃, and the deep low temperature refrigerator is required to be carried out at the temperature of-70 ℃ or liquid nitrogen-196 ℃, if the material is heated, the material is in a 'melt-back' condition, and the solid ice in the material is melted and not sublimated. Most of the vacuum freeze-drying machines in the market at present have the lowest temperature of-60 ℃ and need to be frozen for a long time to freeze the materials to be below-40 ℃, thereby causing huge energy waste.
Such as: the cold and hot integrated vacuum freeze dryer disclosed in Shanghai satellite Equipment research institute (publication No. CN109883162A) of claim 6, wherein the minimum temperature of the refrigeration and heating integrated unit is-60 ℃ and the maximum temperature is 80 ℃.
Disclosure of Invention
The purpose of the present invention is to overcome the drawbacks of the prior art mentioned above, and this purpose is achieved by the following technical solution:
an ultra-low temperature vacuum freeze dryer, including refrigerating system, cold and hot system, vacuum system 41 and vacuum chamber 4, characterized by: refrigerating system comprises precooling system 1 and cryrogenic system 2, precooling system 1 is including precooling compressor 101, precooling heat regenerator 106 of group, cryrogenic system 2 is including cryrogenic compressor 201 of group, intercooler 205, cryrogenic heat regenerator 207, evaporimeter 212 of group, cold and hot system is including cold and hot compressor 301 of group, cross valve 302, cold and hot material layer board 312 arranges the middle part in vacuum chamber 4 in, the both sides of cold and hot material layer board 312 are arranged in to evaporimeter 212, vacuum system 41 connects the top of vacuum chamber 4.
Preferably, a high-pressure end of a pre-cooling group compressor 101 of the pre-cooling system 1 is connected to both a pre-cooling group high-pressure gauge 103 and a pre-cooling group oil separator 102, an oil discharge port of the pre-cooling group oil separator 102 is connected to an oil recovery port of the pre-cooling group compressor 101, an air outlet port of the pre-cooling group oil separator 102 is connected to one end of a pre-cooling group condenser 104, the other end of the pre-cooling group condenser 104 is connected to one end of a pre-cooling group liquid accumulator 105, the other end of the pre-cooling group liquid accumulator 105 is connected to an air inlet port of a pre-cooling group heat regenerator 106 and one end of a first solenoid valve 111, an air outlet port of the pre-cooling group heat regenerator 106 is connected to one end of a pre-cooling group filter 107, the other end of the pre-cooling group filter 107 is connected to one end of a second solenoid valve 108, the other end of the second solenoid valve 108 is connected to one end of, a first outlet of the intercooler 205 is connected to a liquid inlet of the pre-cooling group heat regenerator 106, a liquid outlet of the pre-cooling group heat regenerator 106 is connected to a first inlet of the pre-cooling group vapor-liquid separator 113, the other end of the first electromagnetic valve 111 is connected to one end of the pre-cooling group throttle valve 112, the other end of the pre-cooling group throttle valve 112 is connected to a second inlet of the pre-cooling group vapor-liquid separator 113, and an outlet of the pre-cooling group vapor-liquid separator 113 is simultaneously connected to the pre-cooling group low-pressure meter 114 and the low-pressure.
Preferably, the cryogenic system 2 is provided with a cryogenic group compressor 201, the high-pressure end of the cryogenic group compressor 201 is connected with a cryogenic group high-pressure gauge 203 and one end of a precooler 202 at the same time, the other end of the precooler 202 is connected with the inlet of a cryogenic group oil separator 204, the oil discharge port of the cryogenic group oil separator 204 is connected with the oil recovery port of the cryogenic group compressor 201, the gas outlet port of the cryogenic group oil separator 204 is connected with the second inlet of an intercooler 205, the second outlet of the intercooler 205 is connected with one end of a cryogenic group reservoir 206, the other end of the cryogenic group reservoir 206 is connected with the gas inlet port of the cryogenic group heat regenerator 207, one end of a safety valve 215 and one end of a third electromagnetic valve 214, the gas outlet port of the cryogenic group heat regenerator 207 is connected with one end of a cryogenic group filter 208, the other end of the cryogenic group filter 208 is connected with one end of a fourth electromagnetic valve 209, the other end, the other end of the cryogenic liquid combination mirror 210 is connected with one end of a cryogenic liquid combination expansion valve 211, the other end of the cryogenic liquid combination expansion valve 211 is connected with one end of an evaporator 212, the other end of the evaporator 212 is connected with a liquid inlet of a cryogenic liquid combination heat regenerator 207, a liquid outlet of the cryogenic liquid combination heat regenerator 207 is connected with a first inlet of a cryogenic gas-liquid separator 217, the other end of a third electromagnetic valve 214 is connected with one end of a cryogenic liquid combination throttle 213, the other end of the cryogenic liquid combination throttle 213 is connected with a second inlet of the cryogenic liquid combination gas-liquid separator 217, the other end of a safety valve 215 is connected with one end of an expansion container 216, the other end edge of the expansion container 216 is connected with the second inlet of the cryogenic liquid combination gas-liquid separator 217, and an outlet of the cryogenic liquid combination gas.
Preferably, the high pressure end of the cold and hot group compressor 301 in the cold and hot system is connected to the high pressure interface of the four-way valve 302, the low pressure end of the cold and hot group compressor 301 is connected to the low pressure interface of the four-way valve 302, the air outlet end of the four-way valve 302 is connected to one end of the cold and hot group condenser 303, the other end of the cold and hot group condenser 303 is connected to one end of the cold and hot group reservoir 304, the other end of the cold and hot group reservoir 304 is connected to one end of the first filter 305, the other end of the first filter 305 is simultaneously connected to one end of the fifth solenoid valve 307, one end of the expansion valve 306 and one end of the pressure release valve 308, the other end of the fifth solenoid valve 307 is connected to one end of the first capillary tube 309, the other end of the first capillary tube 309 is connected to one end of the second filter 311, the other end of the, the other end of the second filter 311 is connected to one end of a cold and hot material supporting plate 312, and the other end of the cold and hot material supporting plate 312 is connected to the air inlet end of the four-way valve 302.
Preferably, precooling system 1 precools compressor 201 of cryogenic system 2 through intercooler 205 to make the lowest temperature of evaporator 212 reach-85 ℃.
Preferably, the deep cooling compressor 201 switches to supply cold or heat to the cold and hot material supporting plate 312 through the four-way valve 302, the lowest cold supply temperature of the cold and hot material supporting plate 312 reaches-50 ℃, the highest heat supply temperature reaches 80 ℃, and only 20-30% of the power consumption of the traditional electric heating wire is needed under the same condition.
Preferably, the power of the deep cooling group compressor 201 is greater than that of the cold and hot group compressor 301, and the power of the cold and hot group compressor 301 is greater than that of the pre-cooling group compressor 101.
The utility model discloses a precooling system 1 and 2 dual system overlap of cryrogenic system realize that minimum temperature reaches-85 ℃, and the technique is frozen in ultra-low temperature vacuum, prevents that the material from "melting back" when the heating, reduces the refrigeration time simultaneously, improves refrigeration efficiency.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of the vacuum system of the present invention.
Fig. 2 is a schematic diagram of the structure frame structure of the refrigeration system of the present invention.
Fig. 3 is a schematic diagram of the structure of the cooling and heating system of the present invention.
Detailed Description
The following further describes the practice of the present invention in conjunction with the accompanying drawings:
example one, see fig. 1-3: the utility model provides an ultra-low temperature vacuum freeze dryer, is including refrigerating system, cold and hot system, vacuum system 41 and vacuum chamber 4, refrigerating system comprises precooling system 1 and cryrogenic system 2, precooling system 1 is including precooling group compressor 101, precooling group regenerator 106, cryrogenic system 2 is including cryrogenic group compressor 201, intercooler 205, cryrogenic group regenerator 207, evaporimeter 212, cold and hot system is including cold and hot group compressor 301, cross valve 302, cold and hot material layer board 312, middle part in vacuum chamber 4 is arranged in to cold and hot material layer board 312, the both sides of cold and hot material layer board 312 are arranged in to evaporimeter 212, vacuum system 41 connects the top of vacuum chamber 4.
Example two, with reference to fig. 1-3: the utility model provides an ultra-low temperature vacuum freeze dryer, is including refrigerating system, cold and hot system, vacuum system 41 and vacuum chamber 4, refrigerating system comprises precooling system 1 and cryrogenic system 2, precooling system 1 is including precooling group compressor 101, precooling group regenerator 106, cryrogenic system 2 is including cryrogenic group compressor 201, intercooler 205, cryrogenic group regenerator 207, evaporimeter 212, cold and hot system is including cold and hot group compressor 301, cross valve 302, cold and hot material layer board 312, middle part in vacuum chamber 4 is arranged in to cold and hot material layer board 312, the both sides of cold and hot material layer board 312 are arranged in to evaporimeter 212, vacuum system 41 connects the top of vacuum chamber 4.
The high-pressure end of a cold and hot set compressor 301 in the cold and hot system is connected with the high-pressure interface of a four-way valve 302, the low-pressure end of the cold and hot set compressor 301 is connected with the low-pressure interface of the four-way valve 302, the air outlet end of the four-way valve 302 is connected with one end of a cold and hot set condenser 303, the other end of the cold and hot set condenser 303 is connected with one end of a cold and hot set liquid storage device 304, the other end of the cold and hot set liquid storage device 304 is connected with one end of a first filter 305, the other end of the first filter 305 is simultaneously connected with one end of a fifth electromagnetic valve 307, one end of an expansion valve 306 and one end of a pressure release valve 308, the other end of the fifth electromagnetic valve 307 is connected with one end of a first capillary tube 309, the other end of the first capillary tube 309 is connected with one end of a second filter, the other end of the second filter 311 is connected to one end of a cold and hot material supporting plate 312, and the other end of the cold and hot material supporting plate 312 is connected to the air inlet end of the four-way valve 302.
The deep cooling compressor 201 switches to supply cold or heat for the cold and hot material supporting plates 312 through the four-way valve 302, the lowest cold supply temperature of the cold and hot material supporting plates 312 reaches-50 ℃, the highest heat supply temperature reaches 80 ℃, and only 20-30% of the power consumption of the traditional electric heating wire is needed under the same condition.
Example three, with reference to fig. 1-3: an ultra-low temperature vacuum freeze dryer, including refrigerating system, cold and hot system, vacuum system 41 and vacuum chamber 4, refrigerating system comprises precooling system 1 and cryrogenic system 2, precooling system 1 is including precooling compressor 101, precooling group regenerator 106, cryrogenic system 2 is including cryrogenic compressor 201, intercooler 205, cryrogenic group regenerator 207, evaporimeter 212 of organizing, cold and hot system is including cold and hot compressor 301 of organizing, cross valve 302, cold and hot material layer board 312, the middle part in vacuum chamber 4 is arranged in to cold and hot material layer board 312, the both sides of cold and hot material layer board 312 are arranged in to evaporimeter 212, vacuum system 41 connects the top of vacuum chamber 4.
A high-pressure end of a pre-cooling group compressor 101 of the pre-cooling system 1 is simultaneously connected with a pre-cooling group high-pressure gauge 103 and a pre-cooling group oil separator 102, an oil discharge port of the pre-cooling group oil separator 102 is connected with an oil recovery port of the pre-cooling group compressor 101, an air outlet port of the pre-cooling group oil separator 102 is connected with one end of a pre-cooling group condenser 104, the other end of the pre-cooling group condenser 104 is connected with one end of a pre-cooling group liquid accumulator 105, the other end of the pre-cooling group liquid accumulator 105 is simultaneously connected with an air inlet interface of a pre-cooling group heat regenerator 106 and one end of a first electromagnetic valve 111, an air outlet interface of the pre-cooling group heat regenerator 106 is connected with one end of a pre-cooling group filter 107, the other end of the pre-cooling group filter 107 is connected with one end of a second electromagnetic valve 108, the other end of the second electromagnetic valve 108 is connected with one, a first outlet of the intercooler 205 is connected to a liquid inlet of the pre-cooling group heat regenerator 106, a liquid outlet of the pre-cooling group heat regenerator 106 is connected to a first inlet of the pre-cooling group vapor-liquid separator 113, the other end of the first electromagnetic valve 111 is connected to one end of the pre-cooling group throttle valve 112, the other end of the pre-cooling group throttle valve 112 is connected to a second inlet of the pre-cooling group vapor-liquid separator 113, and an outlet of the pre-cooling group vapor-liquid separator 113 is simultaneously connected to the pre-cooling group low-pressure meter 114 and the low-pressure.
Preferably, the cryogenic system 2 is provided with a cryogenic group compressor 201, the high-pressure end of the cryogenic group compressor 201 is connected with a cryogenic group high-pressure gauge 203 and one end of a precooler 202 at the same time, the other end of the precooler 202 is connected with the inlet of a cryogenic group oil separator 204, the oil discharge port of the cryogenic group oil separator 204 is connected with the oil recovery port of the cryogenic group compressor 201, the gas outlet port of the cryogenic group oil separator 204 is connected with the second inlet of an intercooler 205, the second outlet of the intercooler 205 is connected with one end of a cryogenic group reservoir 206, the other end of the cryogenic group reservoir 206 is connected with the gas inlet port of the cryogenic group heat regenerator 207, one end of a safety valve 215 and one end of a third electromagnetic valve 214, the gas outlet port of the cryogenic group heat regenerator 207 is connected with one end of a cryogenic group filter 208, the other end of the cryogenic group filter 208 is connected with one end of a fourth electromagnetic valve 209, the other end, the other end of the cryogenic liquid combination mirror 210 is connected with one end of a cryogenic liquid combination expansion valve 211, the other end of the cryogenic liquid combination expansion valve 211 is connected with one end of an evaporator 212, the other end of the evaporator 212 is connected with a liquid inlet of a cryogenic liquid combination heat regenerator 207, a liquid outlet of the cryogenic liquid combination heat regenerator 207 is connected with a first inlet of a cryogenic gas-liquid separator 217, the other end of a third electromagnetic valve 214 is connected with one end of a cryogenic liquid combination throttle 213, the other end of the cryogenic liquid combination throttle 213 is connected with a second inlet of the cryogenic liquid combination gas-liquid separator 217, the other end of a safety valve 215 is connected with one end of an expansion container 216, the other end edge of the expansion container 216 is connected with the second inlet of the cryogenic liquid combination gas-liquid separator 217, and an outlet of the cryogenic liquid combination gas.
Precooling system 1 precools deep cooling group compressor 201 of deep cooling system 2 through intercooler 205 to make the lowest temperature of evaporator 212 reach-85 ℃, realizes the ultra-low temperature vacuum freezing technology, prevents the material from "melting back" when heating, reduces the refrigeration time simultaneously, improves the refrigeration efficiency.
The embodiment is four, refers to fig. 1-3, an ultra-low temperature vacuum freeze dryer, including refrigerating system, cold and hot system, vacuum system 41 and vacuum chamber 4, refrigerating system comprises precooling system 1 and cryrogenic system 2, precooling system 1 is including precooling compressor 101, precooling group regenerator 106, cryrogenic system 2 is including cryrogenic compressor 201, intercooler 205, cryrogenic group regenerator 207, evaporimeter 212, cold and hot system is including cold and hot compressor 301, cross valve 302, cold and hot material layer board 312, the middle part in vacuum chamber 4 is arranged in to cold and hot material layer board 312, the both sides of cold and hot material layer board 312 are arranged in to evaporimeter 212, vacuum system 41 connects the top in vacuum chamber 4.
A high-pressure end of a pre-cooling group compressor 101 of the pre-cooling system 1 is simultaneously connected with a pre-cooling group high-pressure gauge 103 and a pre-cooling group oil separator 102, an oil discharge port of the pre-cooling group oil separator 102 is connected with an oil recovery port of the pre-cooling group compressor 101, an air outlet port of the pre-cooling group oil separator 102 is connected with one end of a pre-cooling group condenser 104, the other end of the pre-cooling group condenser 104 is connected with one end of a pre-cooling group liquid accumulator 105, the other end of the pre-cooling group liquid accumulator 105 is simultaneously connected with an air inlet interface of a pre-cooling group heat regenerator 106 and one end of a first electromagnetic valve 111, an air outlet interface of the pre-cooling group heat regenerator 106 is connected with one end of a pre-cooling group filter 107, the other end of the pre-cooling group filter 107 is connected with one end of a second electromagnetic valve 108, the other end of the second electromagnetic valve 108 is connected with one, a first outlet of the intercooler 205 is connected to a liquid inlet of the pre-cooling group heat regenerator 106, a liquid outlet of the pre-cooling group heat regenerator 106 is connected to a first inlet of the pre-cooling group vapor-liquid separator 113, the other end of the first electromagnetic valve 111 is connected to one end of the pre-cooling group throttle valve 112, the other end of the pre-cooling group throttle valve 112 is connected to a second inlet of the pre-cooling group vapor-liquid separator 113, and an outlet of the pre-cooling group vapor-liquid separator 113 is simultaneously connected to the pre-cooling group low-pressure meter 114 and the low-pressure.
The cryogenic system 2 is provided with a cryogenic group compressor 201, the high-pressure end of the cryogenic group compressor 201 is connected with one end of a cryogenic group high-pressure gauge 203 and a precooler 202 at the same time, the other end of the precooler 202 is connected with the inlet of a cryogenic group oil separator 204, the oil discharge port of the cryogenic group oil separator 204 is connected with the oil recovery port of the cryogenic group compressor 201, the air outlet port of the cryogenic group oil separator 204 is connected with the second inlet of an intercooler 205, the second outlet of the intercooler 205 is connected with one end of a cryogenic group reservoir 206, the other end of the cryogenic group reservoir 206 is connected with the air inlet port of the cryogenic group heat regenerator 207 at the same time, one end of a safety valve 215 and one end of a third electromagnetic valve 214, the air outlet port of the cryogenic group heat separator 207 is connected with one end of a cryogenic group filter 208, the other end of the cryogenic group filter 208 is connected with one end of a fourth electromagnetic valve, the other end of the cryogenic liquid combination mirror 210 is connected with one end of a cryogenic liquid combination expansion valve 211, the other end of the cryogenic liquid combination expansion valve 211 is connected with one end of an evaporator 212, the other end of the evaporator 212 is connected with a liquid inlet of a cryogenic liquid combination heat regenerator 207, a liquid outlet of the cryogenic liquid combination heat regenerator 207 is connected with a first inlet of a cryogenic gas-liquid separator 217, the other end of a third electromagnetic valve 214 is connected with one end of a cryogenic liquid combination throttle 213, the other end of the cryogenic liquid combination throttle 213 is connected with a second inlet of the cryogenic liquid combination gas-liquid separator 217, the other end of a safety valve 215 is connected with one end of an expansion container 216, the other end edge of the expansion container 216 is connected with the second inlet of the cryogenic liquid combination gas-liquid separator 217, and an outlet of the cryogenic liquid combination gas.
The high-pressure end of a cold and hot set compressor 301 in the cold and hot system is connected with the high-pressure interface of a four-way valve 302, the low-pressure end of the cold and hot set compressor 301 is connected with the low-pressure interface of the four-way valve 302, the air outlet end of the four-way valve 302 is connected with one end of a cold and hot set condenser 303, the other end of the cold and hot set condenser 303 is connected with one end of a cold and hot set liquid storage device 304, the other end of the cold and hot set liquid storage device 304 is connected with one end of a first filter 305, the other end of the first filter 305 is simultaneously connected with one end of a fifth electromagnetic valve 307, one end of an expansion valve 306 and one end of a pressure release valve 308, the other end of the fifth electromagnetic valve 307 is connected with one end of a first capillary tube 309, the other end of the first capillary tube 309 is connected with one end of a, the other end of the second filter 311 is connected to one end of a cold and hot material supporting plate 312, and the other end of the cold and hot material supporting plate 312 is connected to the air inlet end of the four-way valve 302.
The precooling system 1 precools the cryogenic compressor 201 of the cryogenic system 2 through the intercooler 205 to enable the lowest temperature of the evaporator 212 to reach-85 ℃.
The deep cooling compressor 201 switches to supply cold or heat for the cold and hot material supporting plates 312 through the four-way valve 302, the lowest cold supply temperature of the cold and hot material supporting plates 312 reaches-50 ℃, the highest heat supply temperature reaches 80 ℃, and only 20-30% of the power consumption of the traditional electric heating wire is needed under the same condition.
The power of the deep cooling group compressor 201 is larger than that of the cold and hot group compressor 301, and the power of the cold and hot group compressor 301 is larger than that of the pre-cooling group compressor 101.
The utility model discloses a precooling system 1 and 2 dual system overlap of cryrogenic system realize that minimum temperature reaches-85 ℃, and the technique is frozen in ultra-low temperature vacuum, prevents that the material from "melting back" when the heating, reduces the refrigeration time simultaneously, improves refrigeration efficiency.
Claims (7)
1. An ultra-low temperature vacuum freeze dryer, including refrigerating system, cold and hot system, vacuum system (41) and vacuum chamber (4), characterized by: refrigerating system comprises precooling system (1) and cryrogenic system (2), precooling system (1) is including precooling compressor (101), precooling group regenerator (106), cryrogenic system (2) is including cryrogenic compressor (201), intercooler (205), cryrogenic group regenerator (207), evaporimeter (212), the cryrogenic system is including the cryrogenic compressor (301), cross valve (302), cold and hot material layer board (312), the middle part in vacuum chamber (4) is arranged in to cold and hot material layer board (312), the both sides of cold and hot material layer board (312) are arranged in evaporimeter (212), the top of vacuum chamber (4) is connected in vacuum system (41).
2. An ultra-low temperature vacuum freeze dryer according to claim 1, wherein: the high-pressure end of a precooling group compressor (101) of the precooling system (1) is simultaneously connected with a precooling group high-pressure gauge (103) and a precooling group oil separator (102), the oil discharge port of the precooling group oil separator (102) is connected with an oil recovery port of the precooling group compressor (101), the gas outlet port of the precooling group oil separator (102) is connected with one end of a precooling group condenser (104), the other end of the precooling group condenser (104) is connected with one end of a precooling group liquid accumulator (105), the other end of the precooling group liquid accumulator (105) is simultaneously connected with the gas inlet port of a precooling group heat regenerator (106) and one end of a first electromagnetic valve (111), the gas outlet port of the precooling group heat regenerator (106) is connected with one end of a precooling group filter (107), the other end of the precooling group filter (107) is connected with one end of a second electromagnetic valve (108), the other end of the second electromagnetic valve (, the other end of the precooling group liquid mirror (109) is connected with one end of a precooling group expansion valve (110), the other end of the precooling group expansion valve (110) is connected with a first inlet of an intercooler (205), a first outlet of the intercooler (205) is connected with a liquid inlet of a precooling group heat regenerator (106), a liquid outlet of the precooling group heat regenerator (106) is connected with a first inlet of a precooling group vapor-liquid separator (113), the other end of a first electromagnetic valve (111) is connected with one end of a precooling group throttle valve (112), the other end of the precooling group throttle valve (112) is connected with a second inlet of the precooling group vapor-liquid separator (113), and an outlet of the precooling group vapor-liquid separator (113) is simultaneously connected with a precooling group low-pressure meter (114) and a low-.
3. An ultra-low temperature vacuum freeze dryer according to claim 1, wherein: the cryogenic system (2) is provided with a cryogenic group compressor (201), the high-pressure end of the cryogenic group compressor (201) is connected with one end of a cryogenic group high-pressure gauge (203) and a precooler (202) at the same time, the other end of the precooler (202) is connected with the inlet of a cryogenic group oil separator (204), the oil discharge port of the cryogenic group oil separator (204) is connected with the oil recovery port of the cryogenic group compressor (201), the air outlet port of the cryogenic group oil separator (204) is connected with the second inlet of an intercooler (205), the second outlet of the intercooler (205) is connected with one end of a cryogenic group liquid storage device (206), the other end of the cryogenic group liquid storage device (206) is connected with the air inlet port of the cryogenic group heat regenerator (207), one end of a safety valve (215) and one end of a third electromagnetic valve (214), the air outlet port of the cryogenic group heat regenerator (207) is connected with one end of a cryogenic group filter (208), and the other end of the air outlet group filter (208) is connected with, the other end of a fourth electromagnetic valve (209) is connected with one end of a cryogenic liquid combination mirror (210), the other end of the cryogenic liquid combination mirror (210) is connected with one end of a cryogenic liquid combination expansion valve (211), the other end of the cryogenic liquid combination expansion valve (211) is connected with one end of an evaporator (212), the other end of the evaporator (212) is connected with a liquid inlet of a cryogenic liquid combination heat regenerator (207), a liquid outlet of the cryogenic liquid combination heat regenerator (207) is connected with a first inlet of a cryogenic gas-liquid separator (217), the other end of a third electromagnetic valve (214) is connected with one end of a cryogenic liquid combination throttle valve (213), the other end of the cryogenic liquid combination throttle valve (213) is connected with a second inlet of the cryogenic gas-liquid separator (217), the other end of a safety valve (215) is connected with one end of an expansion container (216), the other end of the expansion container (216) is connected with the second inlet of the cryogenic liquid-liquid combination gas-liquid separator (217), and an outlet of the cryogenic liquid combination gas-liquid separator (217 And (5) pressing the end.
4. An ultra-low temperature vacuum freeze dryer according to claim 1, wherein: the high-pressure end of a cold and hot set compressor (301) in the cold and hot system is connected with the high-pressure interface of a four-way valve (302), the low-pressure end of the cold and hot set compressor (301) is connected with the low-pressure interface of the four-way valve (302), the air outlet end of the four-way valve (302) is connected with one end of a cold and hot set condenser (303), the other end of the cold and hot set condenser (303) is connected with one end of a cold and hot set liquid storage device (304), the other end of the cold and hot set liquid storage device (304) is connected with one end of a first filter (305), the other end of the first filter (305) is simultaneously connected with one end of a fifth electromagnetic valve (307), one end of an expansion valve (306) and one end of a pressure release valve (308), the other end of the fifth electromagnetic valve (307) is connected with one end of a first capillary tube (309), the other end of the first capillary, the other end of the pressure release valve (308) is connected with one end of a second capillary tube (310), the other end of the second capillary tube (310) is connected with one end of a second filter (311), the other end of the second filter (311) is connected with one end of a cold and hot material supporting plate (312), and the other end of the cold and hot material supporting plate (312) is connected with the air inlet end of the four-way valve (302).
5. An ultra-low temperature vacuum freeze dryer according to claim 1, wherein: the precooling system (1) precools a cryogenic compressor (201) of the cryogenic system (2) through an intercooler (205) to enable the lowest temperature of an evaporator (212) to reach-85 ℃.
6. An ultra-low temperature vacuum freeze dryer according to claim 1, wherein: the deep cooling compressor (201) supplies cold or heat to the cold and hot material supporting plate (312) through switching of the four-way valve (302), the lowest cold supply temperature of the cold and hot material supporting plate (312) reaches-50 ℃, and the highest heat supply temperature reaches 80 ℃.
7. An ultra-low temperature vacuum freeze dryer according to claim 1, wherein: the power of the deep cooling group compressor (201) is larger than that of the cold and hot group compressor (301), and the power of the cold and hot group compressor (301) is larger than that of the pre-cooling group compressor (101).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020052473.7U CN212274420U (en) | 2020-01-10 | 2020-01-10 | Ultra-low temperature vacuum freeze dryer |
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| CN202020052473.7U CN212274420U (en) | 2020-01-10 | 2020-01-10 | Ultra-low temperature vacuum freeze dryer |
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2020
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