KR20130093229A - Heat exchanging device - Google Patents

Abstract

PURPOSE: A liquid heat device for a freezing device is provided to improve a freezing efficiency of a freezing device and a refrigerant compression efficiency of a compressor by cyclic-supplying a gas refrigerant evaporated through an exit of a liquid separator to a compressor. CONSTITUTION: A liquid heat device (1A) for a freezing device comprises a water liquid receiver (2), a gas refrigerant entrance (34), and a gas refrigerant exit (35). A liquid separator (3) in which a spiral heat radiation pin (36) is warp-formed with a spiral shape is formed as a dual pipe structure installed inside the liquid receiver in an outer periphery. Multiple partition walls (8a) in which a horizontal cross section is formed inside the liquid separator are installed separately with a constant interval while being inserted into a supporting shaft insert-installed inside the liquid separator. The horizontal cross section has an external diameter inserted in a state of contacting with an inner surface of the liquid separator. In a part of the horizontal cross section, a refrigerant flow path (9a) is formed between the inner surfaces of the liquid separator.

Description

[0001] Heat exchanging device [0002]

The present invention relates to a liquid heat exchanger for a refrigerating device, and more particularly, a heat exchange with a low temperature low pressure gas refrigerant stored in a liquid separator and a high temperature high pressure liquid refrigerant condensed in a condenser of a refrigeration cycle and stored in a receiver. By allowing the action to be well performed, the refrigerant in the mist state, which is contained in the evaporated gas that is not evaporated in the evaporator and mixed into the liquid separator, is evaporated by heat exchange with the high temperature and high pressure liquid refrigerant stored in the receiver. The side is to provide a circulating supply of only the evaporated gas refrigerant to increase the compression efficiency of the compressor and relates to a refrigerating device for a refrigerating device to improve the freezing capacity of the synchronous refrigeration device.

In general, a refrigeration cycle of a refrigerating device using a refrigerant includes a compressor for compressing a low temperature low pressure gas refrigerant evaporated in an evaporator at high temperature and high pressure, and a condenser for condensing the high temperature high pressure gas refrigerant compressed in the compressor with a high temperature and high pressure liquid medium. And temporarily storing the high temperature and high pressure liquid refrigerant condensed in the condenser and supplying the refrigerant in a mist state by rapidly expanding the high temperature and high pressure liquid refrigerant supplied from the receiver. An evaporator which takes the heat from the expansion valve and the mist-like refrigerant supplied from the expansion valve by heat exchange with an external heat exchange medium and vaporizes it (evaporates), and temporarily stores the evaporated gas (gas refrigerant) through the heat exchange action in the evaporator. It is composed of a liquid separator of a liquid heater supplied to a compressor.

The refrigerating device configured as described above is a refrigerant in a mist state that is not evaporated in the evaporator because the refrigerant which is transferred from the evaporator and flows into the outlet of the liquid separator through the liquid separator inlet of the liquid heater is quickly discharged. Since the heat exchange effect with the high-temperature high-pressure liquid refrigerant stored in the receiver of the heat exchanger formed in a double tube structure to wrap is not made well, the mist-like refrigerant flowing into the inlet of the liquid separator is not evaporated and discharged to the outlet This phenomenon causes a problem that the refrigerant is circulated and supplied to the compressor in a circulating state, which not only lowers the compression efficiency of the compressor but also causes a failure of the compressor.

Therefore, in order to solve the above disadvantages, the applicant of the present invention has proposed the prior art of the patent registration No. 1057337, 1059396.

The above-described liquid-liquid heater transfers the refrigerant flowing through the inlet of the liquid separator to the outlet side so that the high temperature and high pressure liquid refrigerant flowing through the inlet of the receiver contacts the outer circumferential surface of the liquid separator for a long time. While the heat exchange effect with the high temperature and high pressure liquid refrigerant stored in the receiver may be expected to some extent, it is not sufficient to evaporate (vaporize) the total amount of the refrigerant refrigerant flowing into the liquid separator. The problem that some of the refrigerant is supplied to the compressor still remains.

In particular, the invention of the prior art Patent No. 1059396 of the prior art relates to a small liquid-heater capable of extruding and molding aluminum, the invention of Patent No. 1057337 relates to a medium-large liquid-heater, the above-mentioned medium-large The receiver and the liquid separator formed by the double tube structure of the liquid heater are manufactured by welding a steel plate material, wherein the spiral heat dissipation fins formed on the outer circumferential surface of the liquid separator installed inside the receiver are wound spirally on the outer circumferential surface. While it can be fixed by means of spot welding, while a plurality of heat sink fins must be radially welded one by one to be spaced apart at regular intervals on the inner circumferential surface of the liquid separator, the production cost of the liquid separator is expensive due to the large amount of time and effort. It is pointed out as a problem.

The present invention has been proposed in view of the above-mentioned problems in the prior art, and is a high temperature in which a mist of refrigerant mixed in the evaporated gas evaporated in the evaporator and transferred to the liquid separator of the column is stored in the receiver of the column. In order to ensure good heat exchange with the high pressure liquid refrigerant, the evaporation gas transferred from the evaporator to the inlet of the liquid separator is a means for delaying the residence time in the liquid separator. The present invention has been invented for the purpose that only the evaporated gas refrigerant is circulated and supplied to the compressor through the outlet of the liquid separator by sufficiently performing heat exchange with the high temperature and high pressure liquid refrigerant stored in the receiver. In addition, liquid heat by reducing the manufacturing cost of the liquid separator The invention is one with a different purpose in order to provide an affordable price.

The present invention, as a means for realizing the above object,

In the present invention, the liquid heater of the embodiment installed in the horizontal type,

The liquid refrigerant inlet connected to the outlet line of the condenser to store the liquid refrigerant of the high temperature and high pressure condensed in the condenser and the inlet line of the expansion valve are connected to transfer the liquid refrigerant flowing from the liquid refrigerant inlet to the expansion valve. A liquid coolant outlet is formed, a gas coolant inlet connected to an outlet line of the evaporator to store gas coolant evaporated in the evaporator, and a gas coolant flowing from the gas coolant inlet to the compressor. The gas coolant outlet is connected to the inlet line of the inlet, and the outer circumferential surface is formed in a double tube structure in which the spiral separator is wound spirally formed inside the receiver.

The liquid refrigerant spray pipe and the receiver are formed with a plurality of refrigerant injection holes for evenly spraying the liquid refrigerant flowing into the liquid refrigerant inlet from the upper side of the liquid separator in a horizontal state installed in the upper portion of the receiver In a horizontal type liquid heater comprising a liquid refrigerant suction pipe for sucking the liquid refrigerant stored in the receiver in a state installed horizontally in the lower side and transferring the liquid refrigerant to the expansion valve inlet line through the liquid refrigerant outlet,

The liquid separator has a plurality of diaphragms having a horizontal cross-section which allows a refrigerant flow passage to be formed between the inner surface of the liquid separator and the outer diameter of the liquid separator, which is inserted in contact with the inner surface of the liquid separator. It is spaced at regular intervals while being fitted to the support shaft inserted into the separator.

The plurality of diaphragms are installed in such a manner that horizontal sections of the neighboring ones are symmetrically up and down so that the refrigerant flow path is formed in a zigzag shape from the gas refrigerant inlet to the gas refrigerant outlet so that the liquid flows through the gas refrigerant inlet. The gas refrigerant flowing into the separator is characterized in that it is configured to be transferred while flowing in the upper, lower zigzag phase from the inside of the liquid separator toward the gas refrigerant outlet.

In addition, each of the plurality of diaphragm which is spaced at a predetermined interval to contact the lower portion of the inner surface of the plurality of diaphragm is characterized in that the groove for oil recovery is formed.

In addition, each of the plurality of diaphragm is characterized in that the arc surface for increasing the heat transfer area with the inner surface of the liquid separator is formed.

An embodiment of the vertical columnar heater of the present invention,

The liquid refrigerant inlet connected to the outlet line of the condenser to store the liquid refrigerant of the high temperature and high pressure condensed in the condenser and the inlet line of the expansion valve are connected to transfer the liquid refrigerant introduced from the liquid refrigerant inlet to the expansion valve. A liquid coolant outlet is formed, a gas coolant inlet connected to an outlet line of the evaporator to store gas coolant evaporated in the evaporator, and a gas coolant flowing from the gas coolant inlet to the compressor. Gas coolant outlet is connected to the inlet of the inlet, the outer circumferential surface of the vertical type heat sink is formed in a double pipe structure in which the spiral separator is wound spirally formed inside the receiver.

Inside the liquid separator, a plurality of diaphragms having a vertical section for forming a refrigerant flow passage between the inner surface of the liquid separator and a portion having an outer diameter inserted in contact with the inner surface of the liquid separator are formed. It is arranged at regular intervals,

The plurality of diaphragms are installed in such a manner that the vertical sections of the neighboring ones are symmetrical to the left and the right, so that the refrigerant flow passage flows from the lower side to the upper side of the liquid separator from the lower side to the upper side in a zigzag direction, through the boil-off gas discharge pipe. Characterized in that configured to be circulated supply to the outlet line of.

In addition, each of the plurality of diaphragm is fixed in such a state that the boil-off gas inlet pipe connected to the gas coolant inlet of the liquid separator and the boil-off gas outlet pipe connected in a U-shape to the gas coolant outlet of the liquid separator are penetrated. It is characterized by.

According to the present invention, the horizontal column type heater and the vertical column type evaporator are evaporated gas evaporated by the heat exchange action with the external heat exchange medium in the evaporator is introduced into the interior through the gas coolant inlet of the liquid separator and flows in a zigzag shape toward the gas coolant outlet. As the time for staying inside the liquid separator becomes longer and the time for contacting with a plurality of diaphragms arranged at a predetermined interval inside the liquid separator becomes longer, the evaporator does not evaporate and is mixed into the evaporation gas and thus inside the liquid separator. It is effective to make the heat exchange action with the high temperature and high pressure liquid refrigerant stored in the receiver in the mist state flowing into the liquid receiver, and this effect is only the gas refrigerant evaporated through the gas refrigerant outlet of the liquid separator. Compressor compression efficiency and freezer The advantage of that would greatly improve the efficiency of refrigeration.

1 is a refrigeration cycle system diagram of a refrigeration apparatus for explaining the present invention
Figure 2 is a cross-sectional view of the assembled state of the horizontal heat exchanger of one embodiment of the present invention
Figure 3 is a perspective view of the diaphragm installed in the liquid separator of the horizontal column of the present invention
4 is a cross-sectional view taken along the line AA of FIG.
5 is an assembled state cross-sectional view of another embodiment of the vertical columnar heater of the present invention;

Specific embodiments of the refrigerating apparatus for a refrigerator according to the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 1A denotes a horizontal columnar heater, 1B a vertical columnar column, and each of the horizontal columnar column array 1A and the vertical columnar column 1B is a receiver 2 installed in an exposed state, and The liquid separator 3 which is internally concealed inside the receiver 2 has a double pipe structure.

In addition, each of the horizontal columner 1A and the vertical columner 1B is a high-temperature, high-pressure gas refrigerant compressed in the compressor 4 of the refrigeration cycle as shown in FIG. 1 is transferred to the condenser 5, the condenser ( In 5), the gas refrigerant is condensed into a liquid refrigerant having a high temperature and high pressure, and then transferred to the receiver 2, and the liquid refrigerant having a high temperature and high pressure stored in the receiver 2 is transferred to an expansion valve 6. (6) rapidly expands the liquid refrigerant to transfer the refrigerant in the fog state to the evaporator (7), the evaporator (7) is a liquid separator for the evaporated gas evaporated by the action of heat exchange of the refrigerant in the fog state with the external heat exchange medium (3), the boil-off gas sent to the liquid separator (3) repeats the circulation action to the compressor (4), in which the evaporator (7) evaporates by heat exchange with an external heat exchange medium Evaporator (7) to the evaporated gas (gas refrigerant) As a result, the phenomenon that the refrigerant is not evaporated is transferred to the liquid separator 3 while the refrigerant is mixed, and thus the liquid liquid refrigerant in the mist transferred to the liquid separator 3 is transferred to the compressor 4. When the supply phenomenon is repeated, the compressor compression efficiency of the compressor 4 not only decreases but also causes a problem.

Therefore, the heat exchange action of the liquid refrigerant in the mist state mixed with the gas refrigerant transferred into the liquid separator 3 and stored with the high temperature and high pressure liquid refrigerant stored in the receiver 2 is actively performed. In (4), it is possible to protect the compressor 4 from the cause of failure by not supplying the liquid refrigerant in the mist state.

Therefore, a feature of the present invention is a means for laying a plurality of diaphragms 8a, 8b for retarding the flow of gas refrigerant in the liquid separator 3, and the gas refrigerant flowing into the liquid separator 3. The evaporated gas in the liquid separator 3 is increased by increasing the time for which the gas stays inside the liquid separator 3 and the heat exchange action with the high temperature and high pressure liquid refrigerant stored in the receiver 2 at the same time. Only the refrigerant can be transferred to the compressor (4) side.

The present invention for this purpose is divided into a horizontal columnar heater 1A of the embodiment shown in Figures 2 to 4 and the vertical columnar heater (1B) shown in FIG.

First, the horizontal liquid heat exchanger 1A will be described.

The horizontal heat receiver 1A has a receiver 2 installed to be exposed to the outside and a liquid separator 3 installed inside the receiver 2 so as to be concealed in a double pipe structure. 1A) is fixed to the bottom of the refrigerator 2 in a horizontal state by a pedestal 20 fixedly attached to the bottom of the receiver 2 by welding.

The receiver 2 is formed in a sealed structure by the cylindrical body 21 and both sealing portions 22 and 23 welded to each of both ends thereof, and the liquid separator 3 also has a cylindrical body 31. ) And both sealing portions 32 and 33 welded to both ends thereof.

The liquid coolant inlet 24 and the liquid coolant outlet 25 are formed at both upper sides of the cylindrical body 21 of the receiver 2, and the outlet line 51 of the condenser 5 is formed at the liquid coolant inlet 24. ) Is connected to the liquid refrigerant outlet 25 is connected to the inlet line 61 of the expansion valve (6).

The liquid refrigerant injection pipe 26 is formed horizontally toward the axial direction of the liquid separator 3 so as to be located above the liquid separator 3 above the inner side of the receiver 2. The inlet pipe 261 formed at one end of the yarn pipe 26 (left end in the drawing) is connected to the liquid coolant inlet 24, and the liquid coolant spray pipe 26 is introduced through the inlet pipe 261. A plurality of refrigerant injection holes 262 are formed for injecting the liquid refrigerant to the upper side of the liquid separator 3.

In addition, the liquid refrigerant suction pipe 27 is disposed below the liquid separator 2 to transfer the liquid refrigerant stored in the fluid receiver 2 to the expansion valve 6 under the liquid separator 3. It is formed in a horizontal direction toward the direction, the other end (right side in the drawing) of the liquid refrigerant suction pipe 27 is formed with a discharge pipe 271 connected to the liquid refrigerant outlet 25, the liquid refrigerant suction pipe 27 ) Is formed with a plurality of refrigerant suction holes 272 for sucking the liquid refrigerant stored in the receiver 2.

A gas coolant inlet 34 and a gas coolant outlet 35 are connected to both sealing portions 32 and 33 welded to both ends of the cylindrical body 31 of the liquid separator 3, respectively. 34 is connected to the other side (right side in the drawing) sealing portion 33 to introduce the evaporation gas (gas refrigerant) transferred from the outlet line 71 of the evaporator 7 into the liquid separator 3, the gas The refrigerant outlet 35 penetrates the seal 22 of one side (left side of the drawing) of the receiver 2 and the seal 32 of one side (left side of the drawing) of the liquid separator 3 so as to pass through the liquid separator 3. It is formed in a structure entered into the inside, the entry end 351 of the gas coolant outlet 35 entered into the liquid separator (3) is U-shaped so that the end is located above the inside of the liquid separator (3). The oil recovery hole 352 is formed at the lower portion of the liquid separator 3, and the gas coolant outlet 35 is the compressor 4. It is connected to the inlet line 41.

The horizontal liquid column 1A is characterized in that a gas coolant outlet is generated by a resistance to a flow rate of the gas refrigerant flowing into the liquid separator 3 through the gas coolant inlet 34 of the liquid separator 3. The high temperature and high pressure at which the low temperature and low pressure gas refrigerant flowing into the liquid separator 3 is stored in the receiver 2 by delaying the time that the gas refrigerant stays inside the liquid separator 3 until discharged through the 35. The heat exchange effect with the liquid refrigerant of the well made through the gas refrigerant outlet 35 is to discharge only the gas refrigerant evaporated (vaporized).

To this end, a plurality of diaphragms 8a having an outer diameter contacting their inner surfaces are inserted into the liquid separator 3 at regular intervals, and each of the plurality of diaphragms 8a has a horizontal cross section formed as if partially cut. 81 is formed, and on the outer circumferential surface of each of the plurality of diaphragms 8a is formed an arc surface 82 for increasing the heat transfer area by making the contact surface with the inner surface of the liquid separator 3 wider.

In addition, the plurality of diaphragms 8a are fixedly installed to maintain a predetermined interval on the support shaft 83, wherein the support shaft 83 is inserted into a state penetrating through the center of each of the plurality of diaphragms 8a, In addition, each center of the plurality of diaphragms 8a is fixed to the support shaft 83 by welding.

In addition, the plurality of diaphragms 8a are assembled to the support shaft 83 so that neighboring ones of the plurality of diaphragms 8 are alternately positioned above and below, and at least a liquid separator of the plurality of diaphragms 8a. An oil recovery recess 84 for recovering oil that collects on the inner bottom of the liquid separator 3 is formed on the circular arc surface 82 of the diaphragms 8a which are in contact with the inner surface lower side of 3). 2 to 4)

The spiral heat dissipation fins 36 spirally wound are formed on the outer circumferential surface of the cylindrical body 31 of the liquid separator 3.

On the other hand, the plurality of diaphragms 8a fixed to the support shaft 83 at a predetermined interval are inserted first in a state in which both ends of the cylindrical body 31 of the liquid separator 3 open, and the plurality of diaphragms 8a. Of the diaphragms 8a-1 and 8a-2 located at both ends of each of the two ends) are each fixed by welding to the inner surface of the cylindrical body 31 of the liquid separator 3. The support shaft 83 and the plurality of diaphragms 8a are fixedly installed in the liquid separator 3.

As described above, the refrigerant flow passage 9a is formed inside the liquid separator 3 by a plurality of diaphragms 8a in the liquid separator 3 in a state of being fixedly attached to the support shaft 83 at a predetermined interval. It is formed in a zigzag shape up and down. Therefore, the gas refrigerant flowing into the liquid separator 3 through the gas refrigerant inlet 34 흐르 flows up and down in a zigzag shape along the refrigerant flow passage 9a formed by the plurality of diaphragms 8a. Not only the length of time of staying in (3) is longer but also the time of contacting the plurality of diaphragms 8a is increased, so that the heat exchange action with the high temperature and high pressure liquid refrigerant stored in the receiver 2 is performed well. Only the vaporized evaporated gas (gas refrigerant) is discharged through the gas refrigerant outlet 35 of the separator 3, and thus, only the gas refrigerant is supplied and supplied to the compressor 4. The freezing capacity of the freezer is also improved.

Next, the mouth liquid type heat exchanger 1B will be described.

In describing the vertical columnar heater 1B, the same parts as those of the above-described horizontal columnar chamber 1A will be described with the same reference numerals and names.

The vertical columnar heater 1B includes a receiver 2 installed to be exposed to the outside and a liquid separator 3 installed to conceal the inside of the receiver 2 in a double pipe structure. 1B) is fixedly installed in a vertical state to the bottom of the refrigerating device by a pedestal 20 fixedly attached to the bottom of the receiver 2 by welding.

The receiver 2 of the vertical columnar heater 1B is formed by the cylindrical body 21, one sealing part 22 welded to the upper end thereof, and the other sealing part 23 welded to the lower end as shown in FIG. It is formed in a sealed structure, the liquid separator 3 also has a cylindrical body 31 and one side (top view) seal 32 and the other side (lower view) seal 33 welded to the upper and lower ends thereof. The liquid receiver 2 and the liquid separator 3 are formed in a double pipe structure similarly to the above-described horizontal column heater 1A.

The liquid refrigerant inlet 24 is connected to the outlet line 51 of the condenser 5 at an upper portion of the receiver 2 of the vertical receiver 1B, and an expansion valve is located below the receiver 2. The liquid refrigerant outlet 25 to which the inlet line 61 of (6) is connected is formed.

A liquid refrigerant injection pipe 26 is formed between an inner upper side of the receiver 2, that is, one sealing part 22 and one sealing beam 32 of the liquid separator 3, and the liquid refrigerant injection pipe ( 26, the inlet pipe 261 is connected to the liquid refrigerant inlet 24, and the liquid refrigerant injection pipe 26 is a liquid refrigerant flowing from the liquid refrigerant inlet 24 to one side seal portion of the liquid separator 3 A coolant spray hole 262 is formed to spray the 32 evenly.

In addition, between the lower side of the receiver 2, that is, between the other side sealing part 23 and the other side sealing part 33 of the liquid separator 3, the liquid refrigerant stored in the inside of the receiver 2 is expanded to the valve 6. Liquid refrigerant suction pipe 27 for the transfer to the formed is formed, the discharge pipe 271 of the liquid refrigerant suction pipe 27 is connected to the liquid refrigerant outlet 25, and the liquid refrigerant suction pipe 27 in the receiver (2) A plurality of refrigerant suction holes 272 are formed for sucking liquid refrigerant stored therein.

A gas coolant inlet 34 and a gas coolant outlet 35 are connected to both seal parts 32 and 33 welded to the upper and lower ends of the cylindrical body 31 of the liquid separator 3, respectively. The inlet 34 penetrates one side (upper side in the drawing) seal 22 of the receiver 2 and is connected to one side (upper side in the drawing) seal part 32 of the liquid separator 3, The evaporated gas (gas refrigerant) transferred from the outlet line 71 is introduced into the liquid separator 3, and the gas coolant outlet 35 is also sealed at one side (upper side in the drawing) of the receiver 2. The gas coolant flowing into the liquid separator 3 is connected to the sealing part 32 of the liquid separator 3 and discharged to the inlet line 41 of the compressor 4. It is configured to.

On the outer circumferential surface of the cylindrical body 31 of the liquid separator 3, a spiral heat dissipation fin 36 wound in a spiral manner is formed in the same manner as the horizontal liquid heater 1A described above.

The gas refrigerant inlet (34) is connected to the evaporation gas inlet pipe (37) installed vertically downward toward the liquid separator (3), and the gas refrigerant outlet (35) toward the inside of the liquid separator (3). The boil-off gas discharge pipe 38 installed downward in a U-shape is connected.

A characteristic of the vertical columnar heater 1B is that a gas coolant outlet may be generated by a resistance to a flow rate of the gas refrigerant flowing into the liquid separator 3 through the gas refrigerant inlet 34 of the liquid separator 3. The high temperature and high pressure at which the low temperature and low pressure gas refrigerant flowing into the liquid separator 3 is stored in the receiver 2 by delaying the time that the gas refrigerant stays inside the liquid separator 3 until discharged through the 35. The heat exchange effect with the liquid refrigerant of the well made through the gas refrigerant outlet 35 is to discharge only the gas refrigerant evaporated (vaporized).

To this end, a plurality of diaphragms 8b having an outer diameter contacting their inner surfaces are inserted into the liquid separator 3 at regular intervals, and each of the plurality of diaphragms 8b has a vertical section formed as if partially cut. 85 is formed, and the outer peripheral surface of each of the plurality of diaphragms 8b is formed with an arc surface 82 for increasing the heat transfer area by making the contact surface with the inner surface of the liquid separator 3 wider.

In addition, since each of the plurality of diaphragms 8b is provided with a plurality of holes (not shown) through which the boil-off gas inlet pipe 37 and the boil-off gas discharge pipe 38 installed vertically in the liquid separator 3 are formed. Each of the diaphragms 8b is fitted to each of the boil-off gas inlet pipe 37 and the boil-off gas discharge pipe 38 so as to be fixed to maintain a predetermined interval.

In addition, the plurality of diaphragms 8b are installed so that vertical sections 81 are alternately positioned at left and right sides of neighboring each other up and down, and the discharge end 371 of the boil-off gas inlet pipe 37 is It is installed to be located at the lower side of the diaphragm 8b-1 formed at the bottom side (represented by reference numeral '8b'), and the inlet end 381 of the boil-off gas discharge pipe 38 is formed at the top side. (8b-2: denoted by reference numeral '8b' when representatively described), and the lowest side of the boil-off gas discharge pipe 38 so as to recover oil accumulated in the liquid separator 3. An oil recovery hole 382 is formed below the diaphragm 8b-1.

As described above, the refrigerant flow passage 9b is formed in a left and right zigzag shape in the liquid separator 3 by a plurality of diaphragms 8b fixedly installed at predetermined intervals in the liquid separator 3 as described above. Accordingly, the gas refrigerant introduced into the liquid separator 3 through the gas refrigerant inlet 34 유입 is introduced into the lower portion of the lowermost plate 8b-1 through the discharge end 371 of the boil-off gas inlet pipe 37 and is thus plural. It flows in the left and right zigzag along the refrigerant flow passage (9b) formed alternately left and right by the diaphragm (8b) of not only increases the time to stay inside the liquid separator (3) but also a plurality of Since the time for contacting the diaphragms 8b increases, heat exchange with the liquid refrigerant of the high temperature and high pressure stored in the receiver 2 is performed well, and thus, the gas coolant outlet of the liquid separator 3 35) Only vaporized evaporated gas (gas refrigerant) is discharged Since it is also improved refrigeration efficiency of the refrigerant compression efficiency of the compressor and the refrigerating apparatus (4) being fed only the feed gas, the refrigerant compressor (4).

The effect of the horizontal columnar heater 1A and the vertical columnar heater 1B of the present invention configured as described above will be described.

The outlet line 51 of the condenser 5 is connected to the liquid refrigerant inlet 24 formed in the receiver 2 of each of the horizontal columner 1a and the vertical columner 1b, and the liquid refrigerant outlet 25 ), The inlet line 61 of the expansion valve 6 is connected, so that the liquid refrigerant condensed at high temperature and high pressure in the condenser 5 is introduced into the receiver 2 through the liquid refrigerant inlet 24 and then stored. It is conveyed to the expansion valve 6 side through the liquid refrigerant outlet 25, and the gas refrigerant inlet 34 formed in the liquid separator 3 of each of the horizontal column heater 1A and the vertical column heater 1B is an evaporator ( The outlet line 71 of 7) is connected, and the inlet line 41 of the compressor 4 is connected to the gas refrigerant outlet 35 so that the gas refrigerant transferred to the evaporator 7 is the gas refrigerant inlet 24. Into the inside of the liquid separator (3) is stored and then transferred to the compressor (4) through the gas refrigerant outlet (35), where A plurality of diaphragms 8a and 8b are provided inside the liquid separator 3 through the gas coolant inlets 24 and 34 in the liquid separator 3 of each of the horizontal lateral column heater 1A and the vertical column 1B. The high temperature and high pressure at which the gas refrigerant flowing into the liquid separator 3 is stored in the receiver 2 by delaying the time of staying inside the liquid separator 3 by inducing the gas refrigerant flowing into the zigzag phase to flow. Heat exchange effect with the liquid refrigerant of the evaporator (7) is not enough to evaporate (vaporize) in the evaporation gas mixed in the evaporation gas into the liquid separator (3) to completely evaporate the refrigerant to the compressor (4) It will be able to transfer.

That is, the horizontal liquid heater (1A) is a flow rate of the resistance by a plurality of diaphragm (8a) is installed at a predetermined interval the gas refrigerant introduced into the liquid separator (3) through the gas refrigerant inlet (34) While receiving the refrigerant flow passage (9a) formed in the upper and lower zigzag phase flows at a slow speed, the gas refrigerant flowing into the liquid separator (3) through the gas refrigerant inlet 34 is a gas refrigerant outlet Since the time for staying inside the liquid separator 1 until discharge through the 35 is increased, the time for contacting each of the plurality of diaphragms 8a also increases, so that the high temperature and high pressure stored in the receiver 2 are increased. The heat exchange effect with the liquid refrigerant is made well, and the liquid separator 3 is heat from the high temperature and high pressure liquid refrigerant stored in the receiver 2 by spiral heat radiating fins 36 formed spirally on the outer circumferential surface thereof. Getting passed Since the heat transfer area is increased, the gas coolant flowing actively into the liquid separator 3 is actively heated, and thus the gas refrigerant flowing into the liquid separator 3 is stored at the high temperature and high pressure. Heat exchanged sufficiently with the liquid refrigerant is discharged through the gas refrigerant outlet 35 only the gas refrigerant completely evaporated (vaporized).

Therefore, the refrigerant in the fog state contained in the gas refrigerant circulating inside the liquid separator 3 of the horizontal column heater 1A is completely evaporated by the heat exchange action with the high temperature and high pressure liquid refrigerant stored in the receiver 2. Since it is discharged, only the evaporated gas refrigerant is transferred to the compressor (4).

In addition, the gas coolant introduced into the liquid separator 3 through the gas coolant inlet 34 of the liquid separator 3 is also supplied by the evaporative gas inlet pipe 37 to the liquid separator 1B. The flow rate is resisted by the plurality of diaphragms 8b which flow into the lower portion of the lower diaphragm 8b-1 and are spaced apart at a predetermined interval upward. By flowing at a slow speed along the coolant flow path 9b formed in the left and right zigzag shape, the time to move to the upper part of the uppermost plate 8b-2 becomes long and the plurality of plates 8b are simultaneously contacted. As the time increases, the gas refrigerant finally introduced into the liquid separator 3 performs heat exchange with the liquid refrigerant of the high temperature and high pressure stored in the receiver 2. The gas refrigerant outlet 35 is pure without the refrigerant in the mist state By discharging only the gas refrigerant, the refrigerant compression efficiency of the compressor 4 and the refrigeration efficiency of the refrigerating device are improved.

1A: Horizontal liquid opening 1B: Liquid opening
2: receiver 3: liquid separator
21,31: cylindrical body 22,32 one side seal
23,33: other side sealing part 24: liquid refrigerant inlet
25: liquid refrigerant outlet 26: liquid refrigerant injection pipe
27: liquid refrigerant suction pipe 34: gas refrigerant inlet
35 gas coolant outlet 36 spiral fin
37: boil-off gas inlet pipe 38: boil-off gas discharge pipe
4: compressor 5: condenser
6: expansion valve 7: evaporator
8a, 8b: Plate 9a, 9b: Refrigerant flow passage

Claims (5)

The liquid refrigerant inlet connected to the outlet line of the condenser to store the liquid refrigerant of the high temperature and high pressure condensed in the condenser and the inlet line of the expansion valve are connected to transfer the liquid refrigerant flowing from the liquid refrigerant inlet to the expansion valve. A liquid coolant outlet is formed, a gas coolant inlet connected to an outlet line of the evaporator to store gas coolant evaporated in the evaporator, and a gas coolant flowing from the gas coolant inlet to the compressor. The gas coolant outlet is connected to the inlet line of the inlet, and the outer circumferential surface is formed in a double tube structure in which the spiral separator is wound spirally formed inside the receiver.
The liquid refrigerant spray pipe and the receiver are formed with a plurality of refrigerant injection holes for evenly spraying the liquid refrigerant flowing into the liquid refrigerant inlet from the upper side of the liquid separator in a horizontal state installed in the upper portion of the receiver In a horizontal type liquid heater comprising a liquid refrigerant suction pipe for sucking the liquid refrigerant stored in the receiver in a state installed horizontally in the lower side and transferring the liquid refrigerant to the expansion valve inlet line through the liquid refrigerant outlet,
The liquid separator has a plurality of diaphragms having a horizontal cross-section which allows a refrigerant flow passage to be formed between the inner surface of the liquid separator and the outer diameter of the liquid separator, which is inserted in contact with the inner surface of the liquid separator. It is spaced at regular intervals while being fitted to the support shaft inserted into the separator.
The plurality of diaphragms are installed in such a manner that horizontal sections of the neighboring ones are symmetrically up and down so that the refrigerant flow path is formed in a zigzag shape from the gas refrigerant inlet to the gas refrigerant outlet so that the liquid flows through the gas refrigerant inlet. And a gas refrigerant flowing into the separator to be transported from the inside of the liquid separator toward the gas refrigerant outlet in an up-and-down zigzag shape.
The method of claim 1,
And a portion of the plurality of diaphragms which are spaced at regular intervals so as to contact a lower portion of the inner surface of the plurality of diaphragms, each of which has an oil return groove formed therein.
The liquid refrigerant inlet connected to the outlet line of the condenser to store the liquid refrigerant of the high temperature and high pressure condensed in the condenser and the inlet line of the expansion valve are connected to transfer the liquid refrigerant introduced from the liquid refrigerant inlet to the expansion valve. A liquid coolant outlet is formed, a gas coolant inlet connected to an outlet line of the evaporator to store gas coolant evaporated in the evaporator, and a gas coolant flowing from the gas coolant inlet to the compressor. Gas coolant outlet is connected to the inlet of the inlet, the outer circumferential surface of the vertical type heat sink is formed in a double pipe structure in which the spiral separator is wound spirally formed inside the receiver.
Inside the liquid separator, a plurality of diaphragms having a vertical section for forming a refrigerant flow passage between the inner surface of the liquid separator and a portion having an outer diameter inserted in contact with the inner surface of the liquid separator are formed. It is arranged at regular intervals,
The plurality of diaphragms are installed in such a manner that the vertical sections of the neighboring ones are symmetrical to the left and the right, so that the refrigerant flow passage flows from the lower side to the upper side of the liquid separator from the lower side to the upper side in a zigzag direction, through the boil-off gas discharge pipe. Refrigerant liquid heater, characterized in that configured to be circulated supply to the outlet line of.
The method of claim 3, wherein
Each of the plurality of diaphragms is fixed in such a state that the boil-off gas inlet pipe connected to the gas coolant inlet of the liquid separator and the boil-off gas outlet pipe connected in a U-shape to the gas coolant outlet of the liquid separator are penetrated. Liquid heater for freezer.
The method according to claim 1 or 3,
And each of the plurality of diaphragms is formed with an arc surface for increasing the heat transfer area with the inner surface of the liquid separator.

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