KR100805424B1 - Condenser having double refrigerant pass and refrigerating plant used the condenser - Google Patents

Abstract

Disclosed are a dual flow path condenser and a refrigerating device using the same, which can significantly increase condensation efficiency without relying on a cooling fan, thereby contributing to the improvement of refrigeration and cooling performance, as well as to overloading the engine and miniaturizing the evaporator. The double channel condenser according to the present invention includes a first refrigerant passage through which a high temperature refrigerant discharged from the compressor passes and a second refrigerant passage through a low temperature refrigerant discharged from the evaporator. In the refrigerating device using the dual flow path condenser, the refrigerant circulates in the order of the compressor, the first refrigerant passage of the condenser, the expansion valve, the evaporator, the second refrigerant passage of the condenser, and the compressor. According to this, since the low-temperature refrigerant discharged from the evaporator exchanges heat with the high-temperature refrigerant passing through the first refrigerant passage while passing through the second refrigerant passage of the condenser, a more supercooled refrigerant flows into the evaporator, and the gas is completely filled into the compressor. The coolant flows in. Therefore, not only can the refrigeration and cooling performance be maximized, but the overload of the engine can be prevented by reducing and / or eliminating the role of the cooling fan, and the evaporator can be miniaturized since there is no need for a separate super heating section on the evaporator. Can be.

Refrigerator, condenser, condenser, air conditioner, dual flow condenser

Description

Dual channel condenser and refrigeration system using same {CONDENSER HAVING DOUBLE REFRIGERANT PASS AND REFRIGERATING PLANT USED THE CONDENSER}

1 is a front view showing the structure of a general condenser,

2 is a cycle configuration diagram of a general refrigeration apparatus to which the condenser shown in FIG. 1 is applied,

3 is a front view showing the structure of a dual flow condenser according to an embodiment of the present invention,

4 is a plan view of FIG.

FIG. 5 is a partial cutaway detailed view showing a state of joining of a double channel tube to a header tank in the dual channel condenser shown in FIG. 3;

6 is a cycle configuration diagram of a refrigerating device using the double channel condenser shown in FIG. 3, and

7 is a view showing an example of piping of each component of the refrigeration apparatus using a double channel condenser according to the present invention.

Explanation of symbols on the main parts of the drawings

20,30; double flow header tank 20a, 30a; partition

21,31; first header tank portion 22,32; second header tank portion

40; double flow path tube 40a, 40b; first and second refrigerant flow path                 

60; heat dissipation fin 71, 81; first and second refrigerant inlet pipe

72,82; First and second refrigerant outlets 91, 92, 93; Baffle

100; compressor 200; double flow condenser

300; expansion valve 400; evaporator

The present invention relates to a condenser for a refrigerating device, and more particularly, to a double channel condenser having a first refrigerant passage through which a high temperature refrigerant discharged from the compressor passes and a second refrigerant passage through a low temperature refrigerant discharged from the evaporator, and a refrigeration using the same. Relates to a device.

In general, the refrigerating device liquefies a refrigerant gas compressed at a high temperature and high pressure in a compressor in a condenser, and then vaporizes the refrigerant gas by an evaporator through an expansion valve to perform freezing and cooling by the heat of vaporization of the refrigerant. Thus, since the refrigerating device performs the freezing and cooling operations by the heat of vaporization of the refrigerant, it is particularly important to increase the condensation efficiency of the refrigerant gas in order to improve its performance.

To this end, in a general refrigerating device, a cooling fan is installed at the front or rear of the condenser to forcibly cool the liquid to liquefy it. Also, the refrigerant flow path of the condenser is changed to facilitate condensation of the refrigerant, or the receiver drier is integrated into the condenser. Composed products are appearing.                         

A typical example of such a condenser for a refrigerating device is shown in FIG. 1, which is briefly described as follows.

As shown, the condenser of a conventional refrigeration system is arranged between two pairs of cylindrical header tanks (1) (2) spaced at appropriate intervals, and a plurality of tubes (3) for heat-exchanging refrigerant with air are arranged at regular intervals. The heat dissipation fins 4 are joined to communicate with the tanks 1 and 2, and the heat dissipation fins 4 which promote heat dissipation of the refrigerant are interposed between the tubes 3. In addition, a baffle 5 for blocking the flow of the refrigerant in the header tanks 1 and 2 at a predetermined position of each of the header tanks 1 and 2 to induce the refrigerant to pass through the plurality of tubes 3 simultaneously. (6) (7) are provided staggered with each other. In addition, the refrigerant inlet pipe 8 and the refrigerant outlet pipe 9 are respectively connected to the upper and lower sides of the header tank 1 on one side. Each component of this condenser is constructed by brazing welding through the cladding material.

2 shows a cycle of a refrigeration apparatus to which a general condenser as described above is applied. Here, the refrigerant is discharged from the compressor 11 to the condenser 12 in a gas state compressed at high temperature and high pressure, liquefied through heat exchange with the atmosphere while flowing through the predetermined flow path in the condenser 12, and then expands the expansion valve ( 13). The expansion valve 13 decompresses and expands the refrigerant to a low-temperature, low-pressure wetted vapor state that is easy to evaporate. The refrigerant discharged from the expansion valve 13 is vaporized by absorbing ambient heat in the evaporator 14. Then, it is sent to the compressor 11 again and converted into a refrigerant gas of high temperature and high pressure to repeat the cycle described above.

In the refrigerating device as described above, as mentioned above, the condensation efficiency of the condenser 12 has a great effect on the freezing and cooling performance, so as to increase the condensation efficiency of the condenser 12, the front of the condenser 12. Alternatively, a cooling fan (not shown) is provided at the rear to forcibly cool the liquid to liquefy it. Such a cooling fan, for example, in a vehicle air conditioner is driven by the power of the engine, and acts as a factor of engine overload. Thus, if the role of the cooling fan can be reduced and / or eliminated, not only the engine can be overloaded, but also the fuel consumption can be reduced. However, in the present refrigeration system, it is impossible to remove or reduce the role of the cooling fan which is closely related to its performance, so that the engine is overloaded and the fuel consumption is excessive.

In addition, in the general refrigerating device, as described above, in order to increase the condensation efficiency of the condenser, a cooling fan or the like is provided, but even in this case, since it is only heat exchange by atmospheric temperature (that is, room temperature), the condenser efficiency of the condenser is increased. There is a limit, and therefore, it does not contribute significantly in terms of maximizing the freezing and cooling performance.

Meanwhile, the refrigerant discharged from the evaporator and introduced into the compressor must be in a gaseous state. Because the liquid is incompressible, the compressor will be fatally damaged if liquid refrigerant is introduced into the compressor. Therefore, it is necessary to allow the refrigerant to be completely gaseous in the compressor. For this purpose, a general refrigeration unit is called a super heating section for changing the refrigerant into a completely gaseous state irrelevant to the cooling performance of the evaporator. As a result, the size of the evaporator cannot be unnecessarily increased compared to the performance.

The present invention has been made in view of the above-described problems of the conventional refrigerating device, and includes a first refrigerant passage through a high temperature refrigerant discharged from a compressor and a second refrigerant passage through a low temperature refrigerant discharged from an evaporator. By exchanging the refrigerant passing through each refrigerant path, the condensation efficiency can be greatly increased without relying on the cooling fan, maximizing refrigeration and cooling performance, and preventing overload of the engine by reducing and / or eliminating the role of the cooling fan. In addition, an object of the present invention is to provide a double channel condenser that can contribute to the miniaturization of the evaporator by changing the refrigerant flowing into the compressor into a completely gas state without having a super heating section in the evaporator.

Another object of the present invention to provide a refrigeration apparatus using a double flow condenser having the above characteristics.

Double flow channel condenser according to the present invention for achieving the above object, a pair of double flow path header tank spaced at appropriate intervals, each divided into a first and second header tank portion by a partition; The first refrigerant passage and the second header, which are joined to the dual channel header tank to communicate the first header tank portions and the second header tank portions of the pair of dual channel header tanks, and communicate with the first header tank portions. A plurality of double channel tubes formed integrally with a second refrigerant channel communicating the tank portions; A plurality of heat dissipation fins for promoting heat dissipation interposed between the plurality of double flow channel tubes; A first refrigerant inlet pipe and a first refrigerant outlet pipe connected to upper and lower sides of the first header tank part of any one of the pair of dual channel header tanks; And a second refrigerant inlet pipe and a second refrigerant outlet pipe respectively connected to upper and lower sides of the second header tank part of the one dual channel header tank.

According to the present invention, the first refrigerant inlet pipe is connected to the compressor discharge side, the first refrigerant outlet pipe is the expansion valve inlet side, the second refrigerant inlet pipe is the evaporator discharge side, and the second refrigerant outlet pipe is connected to the compressor inlet side, respectively. Therefore, the high temperature and high pressure refrigerant discharged from the compressor passes through the first refrigerant passage, and the low temperature low pressure refrigerant discharged from the evaporator passes through the second refrigerant passage, whereby the high temperature refrigerant passing through each refrigerant passage and As the low-temperature refrigerants exchange with each other, a more supercooled refrigerant flows into the evaporator and a completely gasified refrigerant flows into the compressor.

In addition, the dual flow path condenser according to the present invention blocks at least a predetermined flow in the header tank at a predetermined position inside the pair of double flow path header tanks, and at least three to direct the refrigerant to pass through the plurality of double flow path tubes at the same time. The baffles may be staggered from each other.

On the other hand, the refrigerating device for achieving another object of the present invention, the compressor, the condenser, the expansion valve and the evaporator, where the condenser is spaced at a suitable interval and the inside of the first and second header tanks by partitions, respectively A pair of double flow path header tanks divided into negative parts; The first refrigerant passage and the second header, which are joined to the dual channel header tank to communicate the first header tank portions and the second header tank portions of the pair of dual channel header tanks, and communicate with the first header tank portions. A plurality of double channel tubes formed integrally with a second refrigerant channel communicating the tank portions; A plurality of heat dissipation fins for promoting heat dissipation interposed between the plurality of double flow channel tubes; A first refrigerant inlet pipe and a first refrigerant outlet pipe connected to upper and lower sides of the first header tank part of any one of the pair of dual channel header tanks; And a second coolant inlet pipe and a second coolant outlet pipe connected to upper and lower sides of the second header tank part of the single double channel header tank, respectively.

In the refrigeration apparatus according to the present invention as described above, the refrigerant is circulated in the order of the compressor, the first refrigerant flow path of the condenser, the expansion valve, the evaporator, the second refrigerant flow path of the condenser, the compressor, whereby the first refrigerant in the double flow condenser The high temperature refrigerant passing through the flow path and the low temperature refrigerant passing through the second refrigerant flow path exchange with each other. Therefore, high condensation efficiency can be obtained without depending on the cooling fan, thereby improving the freezing and cooling performance as well as preventing overload of the engine by reducing and / or eliminating the role of the cooling fan. In addition, since the refrigerant discharged from the evaporator changes to a completely gaseous state by heat exchange with a high temperature refrigerant passing through the first refrigerant passage while passing through the second refrigerant passage of the condenser, it is necessary to install a separate super heating section in the evaporator. Therefore, miniaturization of the evaporator can be achieved and damage to the compressor due to inflow of the liquid refrigerant can be prevented since liquid refrigerant does not flow into the compressor.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a front view showing the structure of a double flow condenser according to an embodiment of the present invention, FIG. 4 is a plan view of FIG. 3, and FIG. 5 is a view of a double flow path tube for a header tank in the double flow condenser shown in FIG. 3. Some cutaway details showing connections.

As shown, the dual channel condenser according to an embodiment of the present invention is a plurality of dual channels for heat exchange between the refrigerant and air between the pair of cylindrical double channel header tank 20, 30 spaced at a suitable interval The tubes 40 are arranged at regular intervals and are joined to communicate with the double channel header tanks 20 and 30 at both sides, and the plurality of heat dissipation fins 60 for promoting heat dissipation of the refrigerant between the dual channel tubes 40. ) Is intervened.

The double channel header tanks 20 and 30 are divided into first header tanks 21 and 31 and second header tanks 22 and 32 by partitions 20a and 30a, respectively. It is.

The double channel tube 40 is a second refrigerant channel 40a for communicating the first header tank portions 21 and 31 and a second header tank portion 22 and 32 for communicating with each other. The refrigerant passage 40b is integrally formed, and the first refrigerant passage 40a and the second refrigerant passage 40b are separated from each other by the partition 40c.

In addition, a first refrigerant inlet pipe 71 and a first refrigerant outlet pipe 72 are respectively connected to upper and lower sides of the first header tank 21 of the one side dual flow channel header tank 20, and one side dual flow channel headers. The second refrigerant inlet pipe 81 and the second refrigerant outlet pipe 82 are respectively connected to upper and lower sides of the second header tank 22 of the tank 20. Here, the first refrigerant inlet pipe 71 is shown in FIGS. 6 and 7, the discharge side 101 of the compressor 100, and the first refrigerant outlet tube 72 is the inlet side of the expansion valve 300. 302, the second refrigerant inlet pipe 81 is connected to the discharge side 401 of the evaporator 400, and the second refrigerant outlet pipe 82 is connected to the inlet side 102 of the compressor 100, respectively. . In FIG. 6 and FIG. 7, reference numeral 200 denotes a double flow condenser according to the present invention.

Therefore, the high temperature and high pressure refrigerant discharged from the compressor 100 is transferred from the first header tank 21 of the condenser 200 through the first refrigerant inlet pipe 71 to the first refrigerant passage of the double channel tube 40. The low-temperature low-pressure refrigerant flowing along 40a and discharged from the evaporator 400 passes through the second refrigerant tank 22 in the second header tank part 22 of the condenser 200 through the second refrigerant inlet pipe 81. The second refrigerant flow path 40b of the fluid flows, and in this process, the refrigerant having different temperatures passing through the first refrigerant path 40a and the second refrigerant path 40b of the double channel tube 40 is After the heat exchange, the evaporator 400 and the compressor 100 are respectively introduced. At this time, the liquefied refrigerant flowing into the evaporator 400 through the first refrigerant passage 40a is introduced into a more subcooled state by heat exchange with a low temperature refrigerant passing through the second refrigerant passage 40b. 2 The refrigerant flowing into the compressor 100 through the refrigerant passage 40b is exchanged with the high temperature refrigerant passing through the first refrigerant passage 40a to be introduced into a completely gaseous state. Therefore, reducing the role of the cooling fan, or in other words, high condensation efficiency can be obtained by using a small capacity cooling fan or removing the cooling fan at all, and the liquid refrigerant can be transferred to the compressor without a separate super heating section. It does not flow in. That is, according to the double flow path condenser of the present invention, it is possible to prevent the overload of the engine while greatly improving the freezing and cooling performance of the refrigerating device, and also to prevent the liquid refrigerant from flowing into the compressor while miniaturizing the evaporator. Damage to the compressor due to inflow can be prevented.

Meanwhile, as shown in FIG. 3, the double flow path condenser according to the present invention blocks the flow of the coolant in the header tanks 20 and 30 at predetermined positions in the double flow path header tanks 20 and 30 on both sides. At least three baffles 91, 92, 93 can be installed which induces simultaneous passage through a plurality of dual flow channel tubes 40.

6 is a cycle configuration diagram of a refrigeration apparatus using a double flow path condenser according to the present invention shown in FIG. 3 and described above, and FIG. 7 is a view showing an example of piping of each component of a refrigeration apparatus using a double flow path condenser according to the present invention. Referring to this, referring to the operation of the refrigeration apparatus using a double channel condenser according to the present invention as follows.

As shown, the refrigeration apparatus using a double channel condenser according to the present invention, the refrigerant compressed to high temperature and high pressure in the compressor (100) is a first refrigerant channel configured in the double channel tube 40 of the double channel condenser 200 ( After the gas flows into the expansion valve 300 through 40a and expands, the gas flows into the evaporator 400 and absorbs heat from the surroundings, and is formed in the double flow channel tube 40 of the double flow condenser 200 in a vaporized state. 2 The refrigerant flows into the compressor 100 via the refrigerant passage 40b and is refrigerated and cooled while repeating a cycle of being compressed again at high temperature and high pressure. At this time, according to the feature of the double channel condenser 200 according to the present invention, in the double channel condenser 200, is discharged from the compressor 100 along the first refrigerant channel 40a of the double channel condenser 200 The low temperature and low pressure refrigerant flowing from the evaporator 400 and the low temperature and low pressure refrigerant flowing along the second refrigerant passage 40b of the double channel condenser 200 form heat exchange. As a result, the high temperature and high pressure refrigerant via the first refrigerant path 40a of the double channel tube 40 is a low temperature refrigerant via the second refrigerant channel 40b of the double channel tube 40 at the same time as heat exchange with the atmosphere. The heat exchanger is introduced into the evaporator 400 in a more supercooled state, and the low temperature low pressure refrigerant passing through the second refrigerant passage 40b forms a heat exchange with the high temperature refrigerant passing through the first refrigerant passage 40a. The gas flows into the compressor 100.

Therefore, the refrigerating and cooling performance of the refrigerating device can be greatly improved, and the capacity of the cooling fan that acts as an overload factor of the vehicle engine can be reduced or eliminated at all, thereby preventing overload of the engine. In addition, the evaporator can be miniaturized because it is not necessary to provide a separate super heating section for completely gasifying the refrigerant discharged therefrom.

According to the present invention as described above, since the high-temperature refrigerant discharged from the compressor and the low-temperature refrigerant discharged from the evaporator heat exchange with each other via the first refrigerant passage and the second refrigerant passage in the double flow path condenser, respectively, Since the supercooled refrigerant is introduced to improve the freezing and cooling performance, and the compressor is completely gasified refrigerant flows into the compressor to prevent damage to the compressor that can be caused by the liquid refrigerant is introduced.

In addition, according to the present invention, since the high-temperature refrigerant passing through the first refrigerant passage and the low-temperature refrigerant passing through the second refrigerant passage in the double flow path condenser exchange with each other, high condensation efficiency can be obtained without depending on the cooling fan. Therefore, the overload of the engine can be prevented by reducing and / or eliminating the role of the cooling fan.

Further, according to the present invention, since the refrigerant discharged from the evaporator changes into a completely gaseous state and enters the compressor while exchanging heat with the high temperature refrigerant passing through the first refrigerant passage while passing through the second refrigerant passage of the condenser, the evaporator as in the prior art. There is no need to install a separate super heating section in the evaporator can be miniaturized.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (3)

A pair of double flow path header tanks disposed at appropriate intervals, each of which is divided into first and second header tank portions by partitions; A first refrigerant flow path joined to the dual flow path header tank so as to communicate the first header tank parts and the second header tank parts of the pair of double flow path header tanks, and the first header tank parts communicate with each other; A plurality of double channel tubes formed integrally with a second refrigerant channel communicating the second header tank portions; A plurality of heat dissipation fins for promoting heat dissipation interposed between a plurality of the double flow channel tubes; A first refrigerant inlet pipe and a first refrigerant outlet pipe connected to upper and lower sides of the first header tank part of any one of the pair of dual channel header tanks; And, And a second refrigerant inlet pipe and a second refrigerant outlet pipe connected to the upper and lower sides of the second header tank part of the one double channel header tank, respectively. The first refrigerant inlet pipe is connected to the compressor discharge side, the first refrigerant outlet pipe is the expansion valve inlet side, the second refrigerant inlet pipe is the evaporator discharge side, and the second refrigerant outlet pipe is connected to the compressor inlet side, respectively And a high temperature refrigerant via the first refrigerant passage and a low temperature refrigerant via the second refrigerant passage are mutually heat exchanged. The method of claim 1, At a predetermined position inside the pair of double flow channel header tanks, at least three baffles are provided in a staggered manner to block the flow of the coolant in the header tank so that the coolant passes through the plurality of double flow channel tubes at the same time. Double euro condenser. In the refrigerating apparatus for performing the refrigeration and cooling by the heat of vaporization of the refrigerant by liquefying the refrigerant compressed to high temperature and high pressure in the compressor in the condenser, and then vaporized in the evaporator through the expansion valve, The condenser, A pair of double flow path header tanks disposed at appropriate intervals, each of which is divided into first and second header tank portions by partitions; A first refrigerant flow path joined to the dual flow path header tank so as to communicate the first header tank parts and the second header tank parts of the pair of double flow path header tanks, and the first header tank parts communicate with each other; A plurality of double channel tubes formed integrally with a second refrigerant channel communicating the second header tank portions; A plurality of heat dissipation fins for promoting heat dissipation interposed between a plurality of the double flow channel tubes; A first refrigerant inlet pipe and a first refrigerant outlet pipe connected to upper and lower sides of the first header tank part of any one of the pair of dual channel header tanks; And, And a second refrigerant inlet pipe and a second refrigerant outlet pipe connected to the upper and lower sides of the second header tank part of the single dual channel header tank, respectively. Here, the refrigerant is circulated in the order of the first refrigerant passage of the compressor, the condenser, the second refrigerant passage of the expansion valve, the evaporator, the condenser, and the compressor, so that the high temperature refrigerant and the second refrigerant passage passing through the first refrigerant passage in the condenser. Refrigeration apparatus characterized in that the low-temperature refrigerant passing through the heat exchange with each other.

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