TW500902B - Refrigeration system using non-azeotropic mixing refrigerants - Google Patents

Abstract

Disclosed is to provide a refrigerant mixture system having more than two components. Superlow temperature can be achieved by using simple refrigerator system construction. When using non-azeotropic mixing refrigerant of more than two refrigerant components, low temperature operation fluid which pass through compressor 1, condenser 2, throttling valve 4, evaporator 5 and feedback to the circulation path of said compressor can be cooled down by the operation fluid flowed between the said condenser and said throttling valve using heat exchanger 10, this cause the temperature and vapor pressure of refrigerant depressed and by using the depressed temperature and vapor pressure in the compression and condensation to make the operation pressure of refrigerator system lowered down, while to promote the refrigerant component of high vapor pressure and low boiling point to condense, liquefy. Lowering down the operation pressure of refrigerator system, meanwhile using refrigerant of high critical pressure and low critical temperature as mixing refrigerant components can easily achieve superlow temperature.

Description

500902 V. Description of the invention (1) Industrial use and leadership This invention relates to cold heading. v Tokiji ’s refrigeration system in the early stage, etc. Known skills Winter is good. From cold storage, cold (flon) has been widely destroyed by the upper body of the atmosphere, and it has become an indestructible and less greenhouse for the planet. However, in addition to the compatibility relationship between oils, the critical temperature point must be sufficient to the critical temperature range. Therefore, if the refrigerant is difficult, the pressure required for warming the refrigerator is difficult. Therefore, the The special features of the refrigerants used in its freezers are widely used. Although the U-layers of ozone are so-called specific fluorine cooling, they will be affected by the plastic film. The cooling system is the greenhouse effect. Fluoride cooling, such as I, slant, t, etc., which has become an internationally controlled effect, is a fluorine-free cooling system that does not cause the ozone layer. It is an attempt to replace fluorine cooling. The development of new refrigerants is being carried out. As a refrigerant, it needs to be borrowed from the chemical industry. The characteristics are good: it is stable, non-toxic, and low in moisture, and it is cold with purpose. The steam needs between the temperature of the agent, the magic point and the action at room temperature are: although the value of C Lintong Λ is ten on an absolute temperature scale, the standard Buddha is in the official H boundary. 〇 ～ 6 ～ 7 ， Especially A ^ It is used to reduce the refrigerant temperature below 2 ° C. The internal temperature is very low. The temperature of the I world needs to be low, and it is difficult to liquefy. The novel refrigerating system with consistent usability is composed of two or more adjustable cold mixes. Nettle properties were tried. this

V. Description of the invention (2): quasi-indicator = Π can be widely selected or the degree of each component substance = and the bud point curve is separated and under the condition of pressure solidification, the liquefaction start temperature and the beam temperature or gasification start temperature And the gasification end temperature is different Γ 掸 force two ^, the composition of the gas-liquid phases in the condenser under equal pressure changes, if ϋ; ϊ ΐ ΐ charge! And to improve the cooling capacity • ’In the second system of keeping the moist: In the state where the 4 hair dryers have been left, it will become a refrigerator system, and reduce the efficiency of the refrigerator system. In addition, in the ultra-low temperature refrigerator system, as for the refrigerator system that has adopted two or more non-co-hysteresis mixed refrigerants, the capacity of the condenser in the room temperature environment is eight due to the critical temperature at low boiling point. The liquefaction system with a low value of 1 is more difficult. For each component refrigerant, a multivariate method capable of condensing in multiple stages is used. Adding the one shown in Fig. 3 is an example of "using a mixed refrigerant composed of three kinds of refrigerants with different boiling points". After the mixed refrigerant compressed by a compressor 1 is passed through the condenser 2 to release heat, It is used for condensing the second cold coolant with low boiling point and the first cold bundle with higher boiling point, and it is also used by the user for the condensation of low boiling point refrigerant with cooling temperature for the purpose of the second refrigerant. Wait for the first and second refrigerants to be separated by gas-liquid separators 6 and 8 and gasified through the throttle valve 4 to be used in the heat exchanger? · 8 condensed into a low parent refrigerant. The third refrigerant with the lowest boiling point is vaporized in the evaporator 5 through a throttle valve and pre-cooled in a cooling tank (freezer) 50 to the purpose.

JUU ^ UZ

The f-type system is unavoidable. There are high manufacturing costs, or maintenance costs for maintenance and repair. They are often limited in their promotion. The invention is to be solved The present invention is a refrigerator system that can be easily realized by using a non-structure. An azeotropic mixed refrigerant, through a simple system to produce a high-efficiency refrigeration system, especially a compressor for the cryogenic component of the present invention that solves the cryogenic component of the present invention, the steam condenser to the throttling in the condensation path. The low-temperature operating flow state can effectively feed the working fluid of the compressor. The low-zero refrigeration system, non-azeotropic mixer, and throttle valve send feedback to the valve. The action will be cooled from the upper body, depending on the liquid state. The high-cooling and low-temperature action flow can make the low fluid which is characterized by refrigerant, evaporator and compressor low to promote the high Buddha point of the evaporator, and the body is cooled by the shrinking machine. At first glance, there are two systems of low-boiling-point throttle valves with feedback from the refrigeration system to warm-action operation. The condenser fluid has two systems. By using the compressor fluid, the movement between the components is adjusted to the above-mentioned steaming to throttling and discharge pressure. The above is cooled by passing through the liquefaction. The working fluid is to reduce the force between the valve of the hair dryer and the freezer system by setting the above-mentioned boundary temperature to about room temperature. At least one of the non-common Buddhist mixed refrigerants can achieve the temperature of the ultra-low composition easily.

From the M Ξ L picture ^ \ Ben Moming concept illustration of an embodiment of the freezer system, the machine tool is prepared by a mixture of non-common Buddha system ^, and the night 彳 jealous, condensed state 2 exotherm and give Cool to about room temperature and give it on the second month, 2 dryer 3 and send it to the evaporator 5 through the throttle valve 4 to restore the pressure. 1 Xi Xishu absorbs the heat in the freezer and returns it to the compressor, but the system is omitted. Set the travel temperature in its steady state, and set 1 of 4 on the path between the throttles to effectively cool the refrigerant entering the other port of the throttle from the dryer in the figure and Lowering the temperature to below room temperature is ^ This compressor and the evaporation system itself has been written by Haruyamada for a long time, issued by Yakendo Co., Ltd. 10th, 7th edition, page 77) The outflowing gas system uses liquid The saturation temperature is below and within the range of 'compressor and evaporator ^ However, this is due to the fact that the use of sensible heat alone does not make it possible for a refrigerator to have a heat exchanger installed between the appliances. (For example, "Cold Coil and Air Conditioning" Co., Ltd., Showa June 5 (1970)) During the process, the high-temperature refrigerant in the evaporator is properly supercooled to enter the throttle valve without any residual gas. Both components can run smoothly. The operation cycle goes smoothly, as in the present invention, in the case of two or more ingredients,% Λ, > & For effective cooling, the slave's green point and dew point curve will separate due to the cold bath in the condensation process

91057-DR-P001.ptd

Jade, invention description (5)

The system promotes the boiling point of the liquid to promote the progress of the boiling point and minimizes the recirculation. The system is oriented at low pressure and the pressure of the phase is reduced. The pressure can be reduced, such as the boiling point of the refrigerant side, and it acts with cooling. The temperature of the other system is increased when the insulation is compressed, and the boiling point of the composition that can be subdivided is different with the composition of the liquid phase, and the low has shifted to low; the boiling point of the second has become lower, so Degree of exertion;! ^ 纟 and formed cold health agent, it can be 7 / fruit capacity in the evaporation process. In this way, the stroke & + Α Yangmiaoxi, Tian = mixed cooling that has been pre-cooled during the condensation process 1 ^ will reduce the pressure of steam lice, the condensation process becomes faster and faster, h flat and

Cooling under low pressure on the car; the overall system of the Dongji system is possible. M, that is, when the pressure of the condensation process is increased for a long time and the low-boiling-point refrigerant side composition is liquefied, it becomes possible to reduce the discharge pressure of the compressor and reduce its load. From this fact, the use of compressors of the same capacity means that a mixed refrigerant containing a refrigerant component having a relatively high vapor pressure can be used, and it is possible to increase the capacity of the refrigerator. By using this heat exchanger to cool the mixed refrigerant, the boiling point of the mixed refrigerant is reduced, and the components with a lower critical temperature are condensed. By cooling the temperature of the mixed refrigerant to below room temperature, In the warm operating environment, the refrigerant that fails to make the critical temperature of direct condensation lower can be used. For this kind of refrigerant with a low boiling point, a condenser with a high boiling point and a critical temperature and operating at room temperature is used, and a refrigerant that can be easily condensed is combined to make it from two or more refrigerants. Mixed refrigerant, by means of a unit that has adopted a condenser that operates at room temperature

91057-DR-POOl.ptd Page 8 V. Description of the invention (6), the single structure is cold; the Eastern Orthodox system can easily use the ultra-low temperature cold beam energy. Ϊ́ϊΐΐ: Compare the above-mentioned conventional multiple methods, in the middle The extension of the process uses the condensation heat and sensible heat directly in front of the throttle valve to promote: = = course; cold, latent extremely effective cooling. Just here; between: two low, can suppress the reverse pressure drop of thermal insulation compression =: heat and sensible heat 'and increase cooling capacity-= and quickly enter the steady state operation-things are possible. Into the characteristics of the Guyi dynamic cooling beam machine system, it is cold-replaced before the throttle; the temperature of the mixed refrigerant from r 1 / melon to the compressor will increase, but the Compressor = Upper Degree and? Force can be observed to all decrease ", that is, due to: a significant reduction in pressure '& limited by the insulation compression degree rise, this process will immediately return to the mixed cold beam caused by the increase in the cold bead cycle The agent is added in the same way by heat exchange, but the remaining liquid phase with more high-boiling components is also converted into a liquid that does not hinder the operation of the compressor. To the second true: This: The cold of the present invention; the operation of the East system, and the heat exchange between the return of the cooling beam agent without the compressor before returning to the compressor not shown in Figure 2.

91057-DR-pnni ntH

Page 9 5 Description of the invention (7) I use a form of cold bead system to make comparisons, and progress ~ every experimental aspect of grasping these characteristics is not consistent. The detailed physical properties of the refrigerant can be achieved by the operation of the actual machine.:, Analysis: The second side of the machine is a commercial machine made by the UNIMD company, which is a commercially available machine 'Freezing House II = Model Name: GL99EJ)' ... It uses D, R_116 (c6F6) 45% mixed cold beam agent, and the filling amount of the cold beam machine is changed within the consumption range of 2000 ~ 237g. It is expected that the temperature and pressure of each part of the Ab of the cold machine system value. As for the heat exchanger ί, a commercially-available copper double-layer pipe 3111 length 'outer pipe is also used as the refrigerant return flow path. The pressure and temperature of these actual machines are shown in Table 1. Discharge pressure Λ (kg / cm2) Discharge temperature (° C) Suction pressure (cmHg) Recovery temperature (° c) Heat exchanger inlet temperature (° C) Heat exchanger outlet temperature (° C) Evaporator inlet temperature (° C ) 塡 Charge (g) The present invention 16.5 62.7 10 35.9 29.8 23.9 -70.0 200 15.0 63.4 10 35.3 29.5 18.6 -71.6 219 8.0 Ί 62.2 0 32.1 31 -12.3 1 -68.9 237 Comparative Example 19.5 66.9 0 26.5 1 -55.0 200 19.0 68.9 0 22.4 -70.0 219 19.5 69.4 0.05 18.9 -70.7 237 The measurement points of the values in the table are as follows 91057-DR-P001.ptd Page 10 500902 V. Description of the invention (8) Discharge pressure (A), discharge temperature (A), suction pressure, degree (B), heat exchanger outlet temperature (E), 蒗 $, recovery temperature ", and state inlet temperature (G) As shown in Table 1, the cooling is just at the throttle valve positive The previous recovery cold bead agent absorbs the cold from the condenser; as shown in the column of the complex temperature used by the agent, it is directly in front of the compressor and returns to UW4X; and the compressor is used to make This = = the temperature rises but decreases by 7.2 ~ 4.2. (:. At the same time, the temperature N 4 after shrinking with \ ^ There is a hot parent converter, and the west and the west are reduced and cold; the east agent is just before the throttling 7 and the pressure is reduced and spitting: =] ... the pressure is reduced and the spit is generated. The effect can be made cold; The filling amount of the agent is increased from 200g to ^^ 1. The increase in the filling amount of the refrigerant is to directly improve the cooling effect of the agent at the node &valve; the cooling effect of the agent is known to make the heat exchange The temperature at the outlet of the device will decrease. As for the arrival temperature, the slope of the boiling point curve will gradually decrease as the condensation temperature decreases. Therefore, near the boiling point of the filling gas composition, the difference in the arrival temperature will become smaller, and even if The specified low temperature can also be effectively achieved within a relatively small range of the filling amount or the discharge pressure. Y, this is to observe the relationship between the refrigerant filling amount and the cooling effect. When the relationship between the temperature of the refrigerant and the filling amount is compared, it is shown in Table 2.

juuyuz V. Description of the invention (9) Restore the refrigerant heat exchanger inlet temperature CF) The recooling roller heat exchanger outlet temperature (D), that is, if the refrigerant filling amount increases, the appropriate filling amount on the The inlet force of the device is low, and the temperature of π 许 介 π 攸 in the freezer will increase significantly. _ Only the refrigeration at the outlet of the heat exchanger interrupts the circulation under the interruption of evaporation and contains the inevitable replacement in the heat exchanger with the compressor from the compressor: u 'borrowing greatly helps the cooling of the refrigerant. This state is in a non-azeotropic mixed system, and a state called frosting often occurs. The coldness of the agent, the machine system does not help the freezing capacity of the refrigerator. When it is not only in this state, the operating efficiency from the evaporator to the piping around the compressor will be reduced, causing damage. The door solidifies ... phase, also becomes the freezing equipment break. The present invention not only eliminates the frost phenomenon, but also restores the cooling capacity of the refrigerant component and makes? Helping 5 freeze can reduce its negative m, can improve the operating efficiency of the refrigerator. The pressure is significantly reduced by R-116.

500902 V. Description of the invention (ίο) As stated in the table, the boiling point of butane is ~ 0 · 5 X :, so when the filling amount is 2 3 7 g, the refrigerant temperature of -2 4 · 7 ° C is added with Ding. It is known that the latent heat of alkanes is larger from the sensible heat of the refrigerant. " Table 3: Physical properties of butane and R-116 Chemical formula Boiling point (〇C, laTM) Critical temperature ΓΟ Vapor pressure

The butane-R116 mixed refrigerant has a low vapor pressure as described above. Therefore, even if the system according to the present invention does not comply with the present invention, although the freezer system can be operated continuously, the freezer system of the present invention may Effectively reduce the temperature f and pressure of the condensing process, so under normal room temperature environment, the condensing process requires 咼 ® 'Critical temperature is low, the use of non-liquefiable refrigerant in the capacity of the conventional refrigerator can be achieved Very low temperature. Therefore, instead of butane-R1 丨 6-series mixed refrigerants for butane R23 series refrigerants, the refrigeration system also uses the cold beam machine named F ^ 4 (cold heading machine name: GL99EJ) manufactured by UNIDAD Company. And made of commercially available copper layer officials ^ & ,,,, and parent converters, made of butane (dark heart mouth redundant and Bu "dingding. And-the rW refrigerant as a mixed refrigerant, in 140 ~ Within the range of 27 g, more: The filling amount of the V two machine is measured at the temperature and pressure of part A ~.

Page 13 500902 V. Description of the invention (11) The data and physical properties of butane and R-23 are shown in Tables 4 and 5 ° Measurement point: Restore the refrigerant heat exchanger inlet (F), restore the refrigerant heat exchange The outlet (D), the temperature in the storehouse (H), the discharge pressure (kg / cm2), the suction pressure (cmHg), the heat exchanger inlet temperature (° C), and the heat exchanger outlet temperature CC) return the refrigerant heat exchange inlet (). 〇a Recooler heat exchanger outlet rc) Temperature in the warehouse Γ 塡 Charge (g) The present invention imitates 1 15.5 20 30.4 24.4 17.9 30.2 -27 140 14.5 5 29.8 -0.8 -17.0 29.2 -50 150 11.0 0 29.7 -17.5 -26.7 26.8 -69.7 160 10.0 0 29.8 -22 19.3 r -73.5 170 9.5 0 30.2 -24 -30.9 -0.9 -74.2 180 9.5 0.1 30.3 -23.4 -30.9 -1.9 -73.4 190 9.5 0.2 31.3 -23.3 -30.2 -4.8- 72.0 200 1 10.0 Γ 0.3 32.9 -22.3 -29.2 -2.6 -70.1 210 10.5 0.5 34.6 -21.4 -28.9 -0.4 -67.9 220 11.0 0.6 35.0 -21.6 -28.9 1.7 -66.5 230 11.25 0.6 35.3 -22.5 -29.5 2.8 -66.0 240 12.0 0.7 35.8 -24.2 -30.7 3.4 -65.5 250 ^ 12.25 0.8 35.6 -24.7 -30.7 3.5 -65.0 260 '12 .5 1: n ~ kLpJif. 0.8 " h, ItR H M 35.3 -25.4 -31.4 3.7 -64.4 270 Table 5: Physical properties of Ding Yuan, R-23

It can be seen from Table 5 that R-23 also has a lower boiling point than R-116, and is critical and strict. On the other hand, the vapor pressure is quite high. Therefore, even as a μ two-shirt Xqiao 'beam agent, the temperature and pressure of the condensation process rise. As for the cooling capacity of the hybrid system, it is difficult to use the upper system. Of cold beam machine

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V. Description of the invention (12)

In the refrigerating system of the present invention, it can be seen from the above Table 4 that as the refrigerant filling amount increases, the temperature of the returning refrigerant in the heat exchanger decreases significantly. It can be seen that the refrigerant that is linked to these and discharges pressure and the heat exchanger outlet is The temperature will decrease significantly. In this way, the freezing capacity of the butane-R2 3 series refrigerant can be maximized. This situation is also the same as the above situation. It can be learned from the filling amount that the cooling power of the refrigerant is approximately within a certain appropriate range, even if it is increased. The amount of refrigerant filled above fe does not increase the freezing capacity. In the above example, a commercially available freezer is filled with a two-component mixed agent and the actual effect can be confirmed by running the actual machine, but these Lu :: 3 in non :: boiling ^ " combination of refrigerant Or the type of these refrigerants: the number of types of refrigerants that are common, and the combination of refrigerants is also more than two, and Yu Lu is fine. I have the same effect and effectiveness. It is also known that the boiling point is also the temperature drop. It is possible to use the liquid to freeze the energy point, or to hold the temperature and pressure, but the curve can be low, the liquid phase can boil at the same time. In addition, it is basically based on the relationship between the steam and the cold image. If the non-phase composition will be reduced, the required refrigerant can be selected as the seed compressor of the refrigerant. The combination refrigeration system is such as the mixed Buddha shrine. The desired compression effect is the ability to mix cold types or numbers. It can be appropriately composed of the cold bundle agent. The mixed cold bundle has a low boiling point and the freezing temperature is reduced. The pressure is not frozen at room temperature. The amount of the agent depends on the combination of the boiling points. It is also based on the condensing side of the gas-liquid leveling agent, which is relatively lower and can be liquefied easily. The cold heading and critical temperature equilibrium curve process of the easy-to-handle process can be improved by improving the low boiling point. Dimensions • Describe the examples, compare

500902 V. Description of the invention (13) In the aspect of low temperature, in order to promote the condensation process of the low-temperature boiling point refrigerant in the heat exchanger, in order to make a heat exchanger with a large capacity and a compact structure, a spiral can also be used. Tube or laminated construction to replace the double tube.

91057-DR-P001.ptd Page 16 500902 Brief description of the drawings Brief description of the drawings Fig. 1 is a structural diagram of a refrigerator system of the present invention. Fig. 2 is a comparative example to which the present invention is not applied. Figure 3 is a conventional multi-temperature (three-element) freezer system for ultra-low temperature. Explanation of drawings 1 compressor 2 condenser 3 dryer 4 throttle (capillary) 5 evaporator 6 first gas-liquid separator 7 first heat exchanger 8 second gas-liquid separator 9 second gas-liquid separator 1 0 heat exchanger 5 0 cold beam warehouse

91057-DR-P001.ptd Page 17

Claims (1)

500902 VI. Application for patent scope 1 / Kind of cold health system, which is characterized by the use of a # azeotrope-based mixed refrigerant refrigeration system containing more than one refrigerant component, by passing through a compressor, condenser, throttle valve, evaporation The low-temperature working fluid fed back from the evaporator to the compressor in the circulation path of the compressor is cooled by the condenser i to throttle the working fluid between the thighs to promote the liquefaction of low-boiling components. 2 · If the difference in the dynamic boiling point components between the sender and the throttle valve is applied in the scope of the patent application, a refrigeration system of item 1 is used, in which the low-temperature operating flow system cooling the above 蒎 φ \% \ as the fluid depends on the liquid height as Wet state. 3 · If the scope of the patent application, the force of the working fluid between the transmitter and the compressor valve is reduced. The refrigerating system of item 1, the low-temperature operating fluid, can make the discharge pressure from the compressor, which is from the above steaming 2 to the condenser to the throttling fluid 4. As the scope of the patent application 1 it; , Human soil ... Z or 3 is cold at least the azeotropic system of the refrigerant system, where the above temperature is below. Cheng Jie Duo is in the approximate room