CN102353169B - Refrigeration system with low energy consumption and using method thereof - Google Patents
Refrigeration system with low energy consumption and using method thereof Download PDFInfo
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Abstract
The invention relates to a refrigeration system. The refrigeration system comprises an evaporator, a condenser, a compressor and a U-shaped tube or a straight tube, wherein the mounting position of the condenser is higher than that of the evaporator; and the height H of the U-shaped tube or the depth H that the straight tube is inserted below the liquid level of a refrigerant in the evaporator accords with a formula of rho gH>p2-p1, wherein rho is the density of the refrigerant. For a condition that indoor temperature T1 is lower than outdoor temperature T2, the refrigeration system adopts Carnot reverse cycle; and for a condition that the indoor temperature T1 is higher than the outdoor temperature T2, the refrigeration system adopts Carnot cycle, p2<p1, at the moment, refrigerant steam pushes the compressor to idle, and the refrigerant in the U-shaped tube or the straight pipe completes constant entropy compression by means of self gravity without energy consumption, so that the energy consumption of the system is extremely low. The refrigeration system can use other liquid with the boiling point between 20 and 100 DEG C, such as methanol, ethanol and the like as the refrigerant.
Description
Technical field
The invention belongs to the air conditioner refrigerating technical field, be specifically related to a kind of refrigeration system and using method thereof.
Background technology
At present, the kind of refrigeration cycle technology mainly adopts the contrary circulation in Kano, decide entropy compression, the condensation of cold-producing medium isothermal and refrigerant liquid by cold-producing medium isothermal evaporation, refrigerant vapour and decides four cyclic processes of entropy expansion and consist of.Correspondingly, operation of air conditioning systems mainly is comprised of evaporimeter, compressor, condenser, four parts of capillary expansion valve.Present Refrigeration Technique mainly is to be that the low-temperature heat source of T1 is transported to the high temperature heat source that temperature is T2 with heat from temperature, namely from low-temperature receiver heat source carrying heat, is commonly called as " heat pump ".
For the Summer Indoor refrigeration, evaporimeter is arranged on indoor, and condenser is arranged on outdoor; Indoor temperature is lower than outdoor, and room air is low-temperature receiver, and outdoor air is thermal source; Isothermal evaporation after cold-producing medium in the evaporimeter and the room air heat exchange, the compressor compresses refrigerant vapour enters isothermal condensation in the outdoor condenser, the heat transferred outdoor air that cold-producing medium carries in the condensation process, cold-producing medium are finished to decide to get back to after entropy expands in the capillary expansion valve and are repeated above-mentioned circulation in the evaporimeter.
For air conditioner for both cooling and heating, be used for refrigeration in summer, winter heating; From forming on the structure, it is compared with the air-conditioning that only has refrigeration, also is equipped with a cross valve.Summer, evaporimeter was arranged on indoor when freezing, and condenser is arranged on outdoor, and its action principle is the same.But during winter heating, because indoor temperature is higher than outdoorly, room air is thermal source, and outdoor air is low-temperature receiver; At this moment need to be under the transformation of cross valve, realize the conversion of the setting position of evaporimeter and condenser, being arranged on outdoor is evaporimeter, being arranged on indoor is condenser; Isothermal evaporation after cold-producing medium in the evaporimeter and the outdoor air heat exchange, the compressor compresses refrigerant vapour enters isothermal condensation in the indoor condenser, the heat transferred room air that cold-producing medium carries in the condensation process, cold-producing medium are finished to decide to get back to after entropy expands in the capillary expansion valve and are repeated above-mentioned circulation in the evaporimeter.
As seen, no matter present kind of refrigeration cycle technology is in refrigeration or heats that evaporimeter all is arranged in the environment that needs absorbing heat, namely in the low-temperature receiver environment, has so just formed the mode of operation of evaporimeter and low-temperature receiver heat exchange, condenser and thermal source heat exchange.In above-mentioned refrigeration with heat in the circulation, the general cold-producing medium that adopts is freon, according to measuring and calculating, in the air-conditioning of freon as cold-producing medium, because the latent heat of vaporization of freon is little, so that the coefficient of refrigerating performance of kind of refrigeration cycle is low, that is to say, when compressor consumes a particular energy, can be relatively less from the heat of low-temperature receiver carrying by cold-producing medium, so carry at needs under the prerequisite of a certain amount of heat, just need more frequently above-mentioned particular energy of the corresponding consumption of compressor, i.e. overall power consumption increases.
In order to solve the problems of the technologies described above, Chinese patent literature CN201706615U discloses a kind of low energy consumption air conditioner, and it is comprised of evaporimeter and piston type compressed pump and condenser.Low energy consumption air conditioner described in this technology is compared with traditional air conditioner, its principle is identical with working procedure basically, just adopt water as cold-producing medium, because glassware for drinking water has the very large latent heat of vaporization, maximum in the known all substances, per kilogram is about 2400 kilojoules, and the latent heat of vaporization per kilogram of most of cold-producing mediums only has hundreds of kilojoules, mean that ability that water vapour carries heat is several times as much as other cold-producing medium, that is to say and make water as cold-producing medium so that the coefficient of refrigerating performance of kind of refrigeration cycle is high, so correspondingly when compressor consumes a particular energy, can be relatively many from the heat of low-temperature receiver carrying by cold-producing medium, so carry at needs under the prerequisite of a certain amount of heat, just need the less inferior above-mentioned particular energy of the corresponding consumption of compressor, for the refrigeration system of aforementioned use freon, its overall less energy intensive.
Therefore, adopt water minimum as the cold-producing medium energy consumption of air-conditioning system.
What above-mentioned technology was applicable is the situation of the carrying heat from low-temperature heat source to high temperature heat source, and in actual production process, such as cigar mill, textile mills, larger owing to the machine release heat in its factory, often indoor temperature is higher than outdoor temperature far away, need this moment to be disposed to indoor heat outdoor, so just the evaporimeter of absorbing heat need to be arranged in the thermal source environment, because the temperature T 1 of this thermal source environment is high than outdoor environment temperature T2, so corresponding pressure P 2 greater than the outdoor cold source environment of its pressure P 1 meeting, like this in adopting prior art during the EGR of the contrary circulation in Kano, become refrigerant vapour behind the heat of the cold-producing medium absorption thermal source environment in the evaporimeter, but because steam pressure P1 is greater than the pressure P 2 that enters the cold-producing medium in the condenser, so need not compressor refrigerant vapour is done work this moment, only need to utilize above-mentioned pressure reduction to promote compressor rotates, its pressure of cold-producing medium that obtains behind the condenser of flowing through still remains P2, when but the cold-producing medium behind the condenser of flowing through wants to loop back evaporimeter inside, need through being arranged on the capillary expansion valve between described condenser and the described evaporimeter, but also just because of P2 less than P1, so the capillary expansion valve can't return refrigerant circulation in the evaporimeter, so that the contrary circulation in basic Kano can't be carried out.
But, if under above-mentioned specific environment, realize normally carrying out of the contrary circulation in Kano, so just need to reactivate compressor work, so just so that the P2 that pressure is lower originally can the rear acquisition of compressed machine acting greater than the pressure value of P1; Cold-producing medium just can waltz through the capillary expansion valve and loops back in the evaporimeter like this.But in said process, compressor is in case acting will consumes energy, can promote voluntarily compressor in the time of so just can't embodying pressure P 1 greater than P2 and rotate and need not the advantage of using compressor to do work.
Summary of the invention
For this reason, technical problem to be solved by this invention is to be higher than outdoor environment temperature and need to be from the indoor environment release heat when outdoor at indoor environment temperature in the prior art, if adopt the EGR of the contrary circulation in Kano, and utilize P1 to need not compressor work greater than the advantage of P2, then the contrary circulation in Kano can't realize; When adopting compressor to do work to realize that the contrary circulation in Kano is carried out smoothly, because compressor work consumes energy, so that energy consumption increases, and then provide a kind of and be higher than outdoor environment temperature and need to be from the indoor environment temperature release heat under outdoor operating mode above-mentioned at indoor environment temperature, namely need not to utilize compressor work and can realize equally the energy circulation system of indoor environment thermal release in the outdoor environment.
The present invention adopts following technical scheme:
A kind of refrigeration system comprises evaporimeter, and the pressure of cold-producing medium in described evaporimeter is p1, and temperature is t1; Condenser, the pressure of cold-producing medium in described condenser is p2, temperature is t2; The setting position of described condenser is higher than the setting position of described evaporimeter; Compressor, the inlet end of described compressor connects described evaporimeter, and the outlet side connects described condenser; Comprise also that be used to the U-shaped pipe or the straight tube that connect described evaporimeter and condenser the depth H in the height H of described U-shaped pipe or the described straight tube insertion evaporimeter under the cold-producing medium liquid level satisfies ρ gH〉p2-p1, wherein ρ is the density of cold-producing medium.
Described height or depth H are 0.5-1m.
Also be provided with gas-liquid separator between described condenser and described U-shaped pipe or the straight tube.
Described gas-liquid separator top is provided with exhaust outlet, and described exhaust outlet is connected with vavuum pump by switching control pilot.
Described switching control pilot is magnetic valve.
Described evaporimeter comprises the evaporimeter casing, and described evaporimeter memory box has cold-producing medium, and described evaporimeter casing inner bottom part is furnished with the First Heat Exchanger coil pipe that air to be cooled passes through, and described First Heat Exchanger coil pipe places in the described cold-producing medium.
Described condenser comprises the condenser casing, and described condenser casing internal memory has cooling medium, and described condenser casing inner bottom part is furnished with the second heat exchanger coils that described cold-producing medium passes through, and described the second heat exchanger coils places described cooling medium; Offer air intlet and air outlet slit at described condenser casing, described air outlet slit is connected with air-introduced machine.
Described condenser is provided with medium import and media outlet, and described media outlet is connected with cooling tower by pump, and described cooling tower links to each other with described medium import, forms a cooling medium circulation.
Described cold-producing medium is that boiling point is 20-100 ℃ liquid.
Described cold-producing medium is water or methyl alcohol or ethanol.
Technique scheme has following advantage compared to existing technology:
(1) refrigeration system of the present invention, comprise evaporimeter, condenser, compressor, U-shaped pipe or straight tube, depth H in the height H of described U-shaped pipe or the described straight tube insertion evaporimeter under the cold-producing medium liquid level satisfies ρ gH〉p2-p1, wherein ρ is the density of cold-producing medium, because the setting of above-mentioned U-shaped pipe or straight tube, can regulate well the pressure reduction that is positioned at described U-shaped pipe or straight tube two ends, thereby guaranteed to be lower than for indoor temperature T1 the situation of outdoor temperature T2, refrigeration system of the present invention can adopt the contrary circulation in Kano as the prior art, p2〉p1, the acting of compressor compresses refrigerant vapour, U-shaped pipe or straight tube play the effect of expansion valve; Be higher than the situation of outdoor temperature T2 for indoor temperature T1, refrigeration system of the present invention then can adopt Carnot cycle, p2＜p1, and at this moment, refrigerant vapour promotes compressor idle running, does not need power consumption; In addition, because the present invention further limits the setting position that the setting position of described condenser is higher than described evaporimeter, so cold-producing medium through condenser in the evaporimeter process, in the time of in flow through described U-shaped pipe or straight tube, cold-producing medium can rely on self gravitation to finish to decide the entropy compression to need not simultaneously power consumption, like this with regard to so that the whole energy consumption of system reduce.
(2) refrigeration system of the present invention, it is 0.5-1m that described height or depth H are set, like this for general cold-producing medium, guaranteed above-mentioned height or depth H can the described evaporimeter of balance and described condenser in pressure differential between the cold-producing medium so that cold-producing medium is successfully finished the process of throttling expansion or isentropic Compression in described U-shaped pipe or straight tube.
(3) refrigeration system of the present invention also is provided with gas-liquid separator between described condenser and described U-shaped pipe or the straight tube.Described gas-liquid separator is set can make cold-producing medium realize better separating of refrigerant gas and liquid after the condensation in described condenser, when in the middle of the extraneous incoagulable gas infiltration system, gas-liquid separator also can be realized incoagulable gas to separate with refrigerant liquid.
(4) refrigeration system of the present invention, described gas-liquid separator top is provided with exhaust outlet, and described exhaust outlet is connected with vavuum pump by switching control pilot.Described gas-liquid separator top arranges exhaust outlet and is connected with vavuum pump, when work, a certain amount of extraneous on-condensible gas enters internal system, cause the pressure p 2 of cold-producing medium in condenser to increase, work as like this system and carry out the contrary circulation time in Kano, refrigerant vapour is compressed in the process of condenser compressor by evaporimeter at compressor and need to does more merit, the energy consumption of system just can increase; And when system carried out Carnot cycle, pressure p 2 increased and causes reducing of cold-producing medium pressure reduction in evaporimeter and the condenser, and what be unfavorable for circulating normally carries out, so incoagulable gas need to be discharged system.Incoagulable gas is accumulated to when a certain amount of before refrigeration system is carried out work and in the course of work, opening vavuum pump vacuumizes various parts, guaranteed that described refrigeration system can be extraneous with intrasystem on-condensible gas discharge easily, so that described refrigeration system is vacuum environment, thereby reduced the energy consumption of system when work.
(5) refrigeration system of the present invention, described switching control pilot is magnetic valve, opens described magnetic valve system is vacuumized processing, vacuumizes it to be closed after complete, has guaranteed to keep in the refrigeration system subnormal ambient.
(6) refrigeration system of the present invention, described evaporimeter comprises the evaporimeter casing, described evaporimeter memory box has cold-producing medium, and described evaporimeter casing inner bottom part is furnished with the First Heat Exchanger coil pipe that air to be cooled passes through, and described First Heat Exchanger coil pipe places in the described cold-producing medium.Cold-producing medium is in the described evaporimeter, when room air flows through described First Heat Exchanger coil pipe, realizes heat transmission between room air and the cold-producing medium.
(7) refrigeration system of the present invention, described condenser comprises the condenser casing, described condenser casing internal memory has cooling medium, and described condenser casing inner bottom part is furnished with the second heat exchanger coils that described cold-producing medium passes through, and described the second heat exchanger coils places described cooling medium; Offer air intlet and air outlet slit at described condenser casing, described air outlet slit is connected with air-introduced machine.From evaporimeter cold-producing medium out through entering described Secondary Heat Source heat exchanger coils behind the compressor, with the cooling medium heat exchange in the condenser casing, cooling medium again with the outdoor air heat exchange, thereby heat is discharged outdoor.
(8) refrigeration system of the present invention, described condenser is provided with medium import and media outlet, and described media outlet is connected with cooling tower by pump, and described cooling tower links to each other with described medium import, forms a cooling medium circulation.Along with constantly carrying out of exchange heat, the temperature of cooling medium can constantly raise in the condenser casing, this set so that in the condenser casing cooling medium can enter in the cooling tower and cool off, guaranteed that cooling medium has very low temperature all the time in the condenser casing.
(9) refrigeration system of the present invention, described cold-producing medium is the boiling points such as water or methyl alcohol, ethanol at 20-100 ℃ liquid, because above-mentioned cold-producing medium has the larger latent heat of vaporization, so that the coefficient of refrigerating performance of kind of refrigeration cycle is high, so that the overall power consumption of refrigeration system reduces, and these cold-producing mediums are environmentally friendly, can not cause harmful effect to environment.
Description of drawings
Content of the present invention is easier to be expressly understood in order to make, and the below is described in further detail content of the present invention according to the specific embodiment of the present invention also by reference to the accompanying drawings, wherein,
Fig. 1 is the structural representation that is provided with the refrigeration system of U-shaped pipe of the present invention;
Fig. 2 is the schematic diagram of U-shaped tube refrigerant pressure reduction in the refrigeration system of the present invention;
Fig. 3 is the structural representation of the refrigeration system of employing straight tube of the present invention;
Fig. 4 is the structural representation that the present invention has the refrigeration system of condenser cooling medium closed circuit;
Reference numeral is expressed as among the figure: 1-evaporimeter, 101-First Heat Exchanger coil pipe, 102-evaporimeter casing, 2-condenser, 201-the second heat exchanger coils, 202-condenser casing, 203-air intlet, 204-air outlet slit, the import of 205-medium, 206-media outlet, 3-compressor, the 4-air-introduced machine, 5-U shape pipe, 6-straight tube, the 7-gas-liquid separator, 701-exhaust outlet, 8-magnetic valve, the 9-vavuum pump, 10-pump, 11-cooling tower.
The specific embodiment
As shown in Figure 1, refrigeration system of the present invention comprises evaporimeter 1, and the pressure of cold-producing medium in described evaporimeter 1 is p1, and temperature is t1; Condenser 2, the pressure of cold-producing medium in described condenser 2 is p2, temperature is t2; The setting position of described condenser 2 is higher than the setting position of described evaporimeter 1; Compressor 3, the inlet end of described compressor 3 connect described evaporimeter 1, and the outlet side connects described condenser 2; Comprise that also the height H of described U-shaped pipe 5 satisfies ρ gH be used to the U-shaped pipe 5 that connects described evaporimeter 1 and condenser 2〉p2-p1, wherein ρ is the density of cold-producing medium.In the present embodiment, described evaporimeter 1 comprises evaporimeter casing 102, have cold-producing medium in the described evaporimeter casing 102, described evaporimeter casing 102 inner bottom parts are furnished with the First Heat Exchanger coil pipe 101 that air to be cooled passes through, and described First Heat Exchanger coil pipe 101 places in the described cold-producing medium.Described condenser 2 comprises condenser casing 202, there is cooling medium in the described condenser casing 202, described condenser casing 202 inner bottom parts are furnished with the second heat exchanger coils 201 that described cold-producing medium passes through, and described the second heat exchanger coils 201 places described cooling medium; Offer air intlet 203 and air outlet slit 204 at described condenser casing 202, described air outlet slit 204 is connected with air-introduced machine 4.Select water as cold-producing medium and cooling medium in the present embodiment.
During work, as shown in Figure 1, when flow is that Q1, temperature are that the air-flow of T1 is during through First Heat Exchanger coil pipe 101, because gas flow temperature is higher than the water cold-producing medium, the heat that air-flow carries is through First Heat Exchanger coil pipe 101 heating water cold-producing mediums, and air-flow is lowered the temperature, and the saturation state of water cold-producing medium is broken, start vaporizer, simultaneously, compressor 3 is constantly taken the water vapour that the evaporation of water cold-producing medium produces away.When the heat that the heat that obtains from low-temperature receiver heat exchanger coils 101 when the water cold-producing medium and water vapour are taken away is identical, reach balance, at this moment, evaporimeter casing 102 interior saturated pressure are p1, and saturation temperature is t1, and this saturation temperature is exactly the evaporating temperature t1 of evaporimeter.When the gases flow flow is that Q1, temperature are T1, and the capacity of compressor 3 is when remaining unchanged, and the system held evaporating temperature is the isothermal evaporation of t1.Change the capacity of compressor 3, can be issued to balance at new state.
Then, water vapour enters the second heat exchanger coils 201, water vapour passes through the second heat exchanger coils 201 with the heat transferred cooling water, cooling water is heated up, the water vapour cooling, when steam temperature when the p2 pressure condition drops to or be lower than saturation temperature t2, water vapour is condensed into liquid state, this saturation temperature t2 is condensation temperature t2.Simultaneously, it is that Q2, temperature are that the air-flow of T2 enters condenser casing 202 from air intlet 203 that air-introduced machine 4 drives flows, and with the cooling water heat exchange, gas flow temperature raises, cooling water temperature reduces, and then air-flow carries heat and discharges atmosphere via air outlet slit 204 by air-introduced machine 4.
Aqueous water passes back in the evaporimeter casing 102 via U-shaped pipe 5 afterwards, and again evaporation forms circulation, constantly obtains heat under indoor temperature is the environment of T1, then sends in the environment that outdoor temperature is T2.
As indoor temperature T1 during less than outdoor temperature T2, the described refrigeration system of present embodiment is identical with prior art, carries out the contrary circulation in Kano.At this moment, p2＞p1,3 pairs of water vapour actings of compressor make the pressure of water vapour be elevated to p2 by p1, finish and decide the entropy compression process.As shown in Figure 2, when system carries out the contrary circulation time in Kano, because p2＞p1, U-shaped pipe 5 middle water level p2 sides are low, the p1 side is high, is the density of water cold-producing medium when the poor h of height of water level satisfies ρ gh=p2-p1(ρ) time reach balance, at this moment, the water cold-producing medium is unimpededly in the refluxed evaporator device casing 102, finishes to decide entropy and expand.
As indoor temperature T1 during greater than outdoor temperature T2, what the described refrigeration system of present embodiment was carried out is Carnot cycle.At this moment, p1＞p2, the air inlet lateral pressure of compressor 3 is high, and the lateral pressure of giving vent to anger is low.In this case, compressor 3 dallies under the impetus of water vapour pressure reduction p1-p2, and water vapour is decided entropy and expanded.As shown in Figure 2, when system carries out Carnot cycle, because p1＞p2, U-shaped pipe 5 middle water level p1 sides are low, the p2 side is high, is the density of water cold-producing medium when the poor h of height of water level satisfies ρ gh=p1-p2(ρ) time reach balance, at this moment, the water cold-producing medium can unimpededly be back in the evaporimeter casing 102, finishes and decides the entropy compression.Compare with prior art, compressor 3 dallies under the impetus of pressure reduction, and this process does not consume energy, and the water cold-producing medium relies on to conduct oneself with dignity to finish decides the entropy compression, also do not consume energy, the energy consumption of cyclic process makes the energy consumption of system held negative pressure state, thereby greatly reduces the energy consumption of system.
As embodiment that can conversion, the pipe of U-shaped described in above-described embodiment can be substituted by straight tube 6, and described straight tube 6 inserts that the depth H under the cold-producing medium liquid level satisfies ρ gH in the evaporimeters 1〉p2-p1, wherein ρ is the density of cold-producing medium.
Wherein, select for the numerical value of H, generally selecting described height or depth H is 0.5-1m, this settings for general cold-producing medium, guaranteed highly or depth H can the described evaporimeter of balance and described condenser in pressure differential between the cold-producing medium.
As embodiment preferably, enter in the refrigeration system for fear of extraneous incoagulable gas, affect internal system pressure, must realize that incoagulable gas is with the separation of refrigerant liquid, on above-described embodiment basis, further between described condenser 2 and described U-shaped pipe 5 or straight tube 6, also be provided with gas-liquid separator 7, see as shown in figures 1 and 3.After using 7 pairs of described incoagulable gas of above-mentioned gas-liquid separator to separate, exhaust outlet 701 dischargings of incoagulable gas through being arranged on described gas-liquid separator 7 tops; In order to realize better the discharging to incoagulable gas, the setting that is connected with vavuum pump 9 of preferred described exhaust outlet 701 more is conducive to the discharging of incoagulable gas like this by the suction function of vavuum pump.
In the above-mentioned process that incoagulable gas is discharged, in order to control better gas purging, close exhaust outlet in good time, avoid the leakage of refrigeration system internal negative pressure, described exhaust outlet 701 is connected with vavuum pump 9 by switching control pilot.In the present embodiment preferably described switching control pilot be magnetic valve 8(as shown in figures 1 and 3).When 9 pairs of systems of vavuum pump vacuumize, magnetic valve 8 is opened, and evaporimeter casing 102, compressor 3, the second heat exchanger coils 201, gas-liquid separator 7, U-shaped pipe 5 or straight tube 6 etc. is vacuumized, when vacuum reaches predetermined state, magnetic valve 8 cuts out, and system will keep vacuum state.
In the above-described embodiments, described condenser 2 be can be chosen in and medium import 205 and media outlet 206 are provided with, in described condenser 2, add cooling medium by medium import 205, as preferred embodiment, as shown in Figure 4, described media outlet 206 is connected with cooling tower 11 by pump 10, and described cooling tower 11 links to each other with described medium import 205, forms a cooling medium circulation.This is arranged so that cooling medium can enter in the cooling tower 11 in the condenser casing 202 and cools off, has guaranteed that cooling medium has very low temperature all the time in the condenser casing 202.
The cold-producing medium that adopts in above-described embodiment is water, and as embodiment that can conversion, it is other liquid of 20-100 ℃ that described cold-producing medium can also be chosen as boiling point, such as methyl alcohol or ethanol.Cooling medium in the described condenser casing 202 can be chosen as other cooling effect other liquid preferably such as ethanol.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive, and the apparent variation of being extended out thus or the change still be among the protection domain of claim of the present invention.
Claims (10)
1. a refrigeration system comprises
Evaporimeter (1), the pressure of cold-producing medium in described evaporimeter (1) is p1, temperature is t1;
Condenser (2), the pressure of cold-producing medium in described condenser (2) is p2, temperature is t2;
The setting position of described condenser (2) is higher than the setting position of described evaporimeter (1);
Compressor (3), the inlet end of described compressor (3) connects described evaporimeter (1), and the outlet side connects described condenser (2);
It is characterized in that:
Also comprise be used to the U-shaped pipe (5) that connects described evaporimeter (1) and condenser (2) or straight tube (6), the depth H that the height H of described U-shaped pipe (5) or described straight tube (6) insert under the middle cold-producing medium liquid level of evaporimeter (1) satisfies ρ gH〉p2-p1, wherein ρ is the density of cold-producing medium.
2. refrigeration system according to claim 1, it is characterized in that: described height or depth H are 0.5-1m.
3. refrigeration system according to claim 1 and 2 is characterized in that: also be provided with gas-liquid separator (7) between described condenser (2) and described U-shaped pipe (5) or the straight tube (6).
4. refrigeration system according to claim 3, it is characterized in that: described gas-liquid separator (7) top is provided with exhaust outlet (701), and described exhaust outlet (701) is connected with vavuum pump (9) by switching control pilot (8).
5. refrigeration system according to claim 4, it is characterized in that: described switching control pilot is magnetic valve (8).
6. according to claim 1 and 2 or 4 or 5 described refrigeration systems, it is characterized in that: described evaporimeter (1) comprises evaporimeter casing (102), described evaporimeter memory box has cold-producing medium, described evaporimeter casing (102) inner bottom part is furnished with the First Heat Exchanger coil pipe (101) that air to be cooled passes through, and described First Heat Exchanger coil pipe (101) places in the described cold-producing medium.
7. according to claim 1 and 2 or 4 or 5 described refrigeration systems, it is characterized in that: described condenser (2) comprises condenser casing (202), there is cooling medium in the described condenser casing (202), described condenser casing (202) inner bottom part is furnished with the second heat exchanger coils (201) that described cold-producing medium passes through, and described the second heat exchanger coils (201) places described cooling medium; Offer air intlet (203) and air outlet slit (204) at described condenser casing (202), the same air-introduced machine of described air outlet slit (204) (4) is connected.
8. refrigeration system according to claim 7, it is characterized in that: described condenser (2) is provided with medium import (205) and media outlet (206), described media outlet (206) is connected with cooling tower (11) by pump (10), described cooling tower (11) links to each other with described medium import (205), forms a cooling medium circulation.
9. according to claim 1 and 2 or 4 or 5 or 8 described refrigeration systems, it is characterized in that: described cold-producing medium is that boiling point is 20-100 ℃ liquid.
10. refrigeration system according to claim 9, it is characterized in that: described cold-producing medium is water or methyl alcohol or ethanol.
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| CN108504561B (en) * | 2018-05-24 | 2024-03-26 | 南京紫晶藤节能科技有限公司 | Alcohol fermentation cooling system and method |
| CN108955014B (en) * | 2018-09-18 | 2023-12-01 | 江苏允微流体科技有限公司 | Closed vacuum refrigeration cold accumulation equipment and method |
| CN110598322B (en) * | 2019-09-12 | 2023-05-12 | 揭阳市美度实业有限公司 | Simulation evaluation and optimization design method for integrated downward-convex type voltage-stabilizing and current-distributing automobile condenser |
| CN111059662A (en) * | 2019-12-24 | 2020-04-24 | 孔令桃 | Ground cooling air conditioner |
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