KR100805423B1 - 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 greatly increase the condensation efficiency without relying on a cooling fan, thereby contributing to improvement of cooling performance, prevention of engine overload, and miniaturization of an 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 supplied to the compressor. The coolant flows in. Therefore, it is possible to maximize the cooling performance, to prevent the overload of the engine by reducing the role and / or removal of the cooling fan, and also to miniaturize the evaporator because there is no need to put a separate super heating section on the evaporator.

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 the connection state of the first tube and the second tube to the header tank in the dual flow 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.

<Description of Symbols for Main Parts of Drawings>

20,30; double flow header tank 21, 31; first header tank

22,32; 2nd header tank part 40, 50; 1st and 2nd tube

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 influence on the cooling performance, in order to increase the condensation efficiency of the condenser 12, the front or rear of the condenser 12. A cooling fan (not shown) is provided in the chamber to liquefy by forcibly cooling the refrigerant. Such a cooling fan, for example, is driven by the power of a vehicle engine in an automobile air conditioner, 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 the freezing and cooling performance, and thus, the engine overload and the excessive fuel consumption are inevitable.

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 enter the gaseous state completely in the compressor. For this purpose, in the general refrigerating unit, it is simply referred to as a super heating section for simply changing the refrigerant into a 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.

 SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has each refrigerant passage having 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, the condensation efficiency can be greatly increased without relying on the cooling fan, maximizing refrigeration and cooling performance, and reducing the role and / or elimination of the cooling fan to prevent overload of the engine and super It is an object of the present invention to provide a double flow condenser that can contribute to the miniaturization of an evaporator by changing the refrigerant flowing into the compressor into a completely gas state without having a heating section.

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

The dual flow path condenser according to the present invention for achieving the above object is a pair of double flow path header tank and a pair of double flow passages, each spaced apart at appropriate intervals and divided into first and second header tank portions by partitions, respectively. A plurality of first tubes which are joined to the double channel header tank so as to communicate between the first header tank portion of the flow path header tank and constitute the first refrigerant channel, and the second header tank portion of the pair of double flow channel header tank. A plurality of second tubes joined to the double channel header tank to form a second refrigerant channel, a plurality of heat dissipation fins for promoting heat dissipation interposed between the first tube and the second tubes, and the pair of dual channel headers A first refrigerant inlet pipe and a first refrigerant outlet pipe connected to an upper side and a lower side of the first header tank unit of any one of the double channel header tanks of the tank, and the second header tank unit of the one dual channel header tank It characterized in that it comprises a second refrigerant inlet pipe and the second refrigerant inlet pipe connected to the upper and lower, respectively.

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 are heat-exchanged with each other, a supercooled refrigerant flows into the evaporator, and a completely gasified refrigerant flows into the compressor.

Further, in the condenser according to the present invention, a plurality of first tubes and second tubes constituting the first and second refrigerant passages may be alternately arranged.

In addition, the condenser according to the present invention blocks at least a flow of the refrigerant in the header tank at a predetermined position inside the pair of double flow path header tanks, at least to induce the refrigerant to pass through the plurality of first or second tubes simultaneously. Three baffles can be staggered from each other.

On the other hand, a refrigerating device for achieving another object of the present invention, the compressor, the condenser, the expansion valve and the evaporator, wherein the condenser is spaced at appropriate intervals, respectively, the inside of the first and second header by a partition A pair of double flow path header tanks divided into tank sections; A plurality of first tubes joined to the double channel header tank so as to communicate between the first header tank portions of the pair of dual channel header tanks and constituting the first refrigerant channel; A plurality of second tubes joined to the double channel header tank so as to communicate between the second header tank portions of the pair of dual channel header tanks and constituting the second refrigerant channel; A plurality of heat dissipation fins for promoting heat dissipation interposed between the first tube and the second tube; 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 first refrigerant flow path of the compressor, the condenser, the expansion valve, the evaporator, the second refrigerant flow path of the condenser, the compressor, whereby the first refrigerant flow path from the condenser The high temperature refrigerant passing through and the low temperature refrigerant passing through the second refrigerant passage exchange heat 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 the engine from being overloaded by reducing the role and / or eliminating 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 first tube for a header tank in the double flow condenser shown in FIG. Some cut details showing the connection of the second tube.

As shown, the dual channel condenser according to an embodiment of the present invention a plurality of first tubes for heat exchange between the refrigerant and air between a pair of cylindrical dual channel header tanks 20, 30 spaced at appropriate intervals 40 and the second tube 50 are arranged at regular intervals and are joined to communicate with the double-sided flow channel header tanks 20 and 30, and between the tubes 40 and 50 to promote heat dissipation of the refrigerant. A plurality of heat dissipation fins 60 are interposed therebetween.

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. In addition, the plurality of first tubes 40 are joined to the double channel header tanks 20 and 30 so that the first header tanks 21 and 31 communicate with each other, and a high temperature refrigerant discharged from the compressor is provided. A first refrigerant flow passage is formed, and the plurality of second tubes 50 are joined to the double flow passage header tanks 20 and 30 so as to communicate between the second header tank portions 22 and 33. And constitutes a second refrigerant passage through which the low temperature refrigerant discharged from the evaporator passes. Preferably, the plurality of first and second tubes 40 and 50 are alternately arranged one by one, but are not necessarily limited thereto, and the two second tubes 40 may be disposed below one first tube 40. 50 may be arranged, and one or two first tubes 40 may be arranged below, and vice versa.

In addition, the first refrigerant inlet pipe 71 and the first refrigerant outlet pipe 72 are respectively connected to the upper and lower sides of the first header tank 21 of the one side double flow channel header tank 20, and one side of the double flow path header tank 20 is connected to each other. The second refrigerant inlet pipe 81 and the second refrigerant outlet pipe 82 are respectively connected to the upper and lower sides of the second header tank 22 of the header 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 flows along the first tubes 40 in the first header tank 21 of the condenser 200 through the first refrigerant inlet pipe 71. The low temperature low pressure refrigerant discharged from the evaporator 400 flows along the second tubes 50 in the second header tank part 22 of the condenser 200 through the second refrigerant inlet pipe 81. After the refrigerant having a different temperature passing through the first tube 40 and the second tube 50 in the heat exchange, the evaporator 400 and the compressor 100 are respectively introduced. At this time, the liquefied refrigerant flowing into the evaporator 400 is introduced into a more subcooled state by heat exchange with the low temperature refrigerant passing through the second tube 50, and the refrigerant flowing into the compressor 100 is first Heat exchanges with the high temperature refrigerant passing through the tubes 40 and enters the complete gas state. Therefore, it is possible to reduce the role of the cooling fan or, in other words, to achieve high condensation efficiency even by using a small capacity cooling fan or even removing the cooling fan. 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 may be installed which induces simultaneous passage through a plurality of tubes 40, 50.

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 in the drawing, a refrigeration apparatus using a dual flow condenser according to the present invention includes a plurality of first tubes 40 in which a refrigerant compressed at high temperature and high pressure in the compressor 100 constitutes a first refrigerant passage of the condenser 200. A plurality of second tubes constituting the second refrigerant flow path of the condenser 200 in the evaporator 400 is introduced into the expansion valve 300 through the expansion, and then flows into the evaporator 400 to absorb the heat around the vaporized state ( Through 50), the refrigerant is introduced into the compressor 100 and the refrigeration and cooling are performed while repeating the cycle of being compressed again at high temperature and high pressure. At this time, according to the characteristics of the double channel condenser 200 according to the present invention, the double channel condenser 200 is discharged from the compressor 100 to the first tube 40 which is the first refrigerant channel of the condenser 200. The low temperature and low pressure refrigerant flowing along the second tube 50, which is discharged from the evaporator 400 and flows along the second tube 50 of the condenser 200, performs heat exchange. As a result, the high temperature and high pressure refrigerant passing through the first tube 40 is introduced into the evaporator 400 in a more supercooled state while performing heat exchange with the low temperature refrigerant passing through the second tube 50 at the same time as the heat exchange with the atmosphere. The refrigerant having a low temperature and low pressure passing through the second tube 40 is introduced into the compressor 100 in a completely gaseous state while performing heat exchange with the high temperature refrigerant passing through the first tube 40.

Therefore, the refrigerating and cooling performance of the refrigerating apparatus 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, thereby preventing overload of the engine. In addition, since it is not necessary to provide a separate super heating section for gasifying the refrigerant discharged therefrom, the evaporator can be miniaturized.

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 in the condenser via the first refrigerant passage and the second refrigerant passage, respectively, The supercooled refrigerant is introduced to improve the refrigerating 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 channel condenser exchange with each other, high condensation efficiency is achieved without depending on the cooling fan. It is thus possible to avoid overloading the engine by reducing and / or eliminating the role of the cooling fan.

In addition, according to the present invention, since the refrigerant discharged from the evaporator changes into a completely gaseous state and flows into the compressor while exchanging heat with a high temperature refrigerant passing through the first refrigerant passage while passing through the second refrigerant passage of the double channel condenser, Likewise, miniaturization of the evaporator can be achieved because there is no need to install a separate super heating section on the evaporator.

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 (4)

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 plurality of first tubes joined to the double channel header tank to form a first refrigerant channel to communicate between the first header tank portions of the pair of dual channel header tanks; A plurality of second tubes joined to the double channel header tank so as to communicate between a second header tank portion of the pair of dual channel header tanks, and configured to constitute a second refrigerant channel; A plurality of heat dissipation fins for promoting heat dissipation interposed between the first tube and the second tube; 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, And a plurality of the first and second tubes constituting the first refrigerant passage and the second refrigerant passage are alternately arranged. The method according to claim 1 or 2, At a predetermined position inside the pair of double flow path header tanks, at least three baffles are disposed to alternate with each other to block the flow of the refrigerant in the header tank and to cause the refrigerant to pass through the plurality of first or second tubes simultaneously. Dual flow condenser characterized in that. 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 plurality of first tubes joined to the double channel header tank to form a first refrigerant channel to communicate between the first header tank portions of the pair of dual channel header tanks; A plurality of second tubes joined to the double channel header tank so as to communicate between a second header tank portion of the pair of dual channel header tanks, and configured to constitute a second refrigerant channel; A plurality of heat dissipation fins for promoting heat dissipation interposed between the first tube and the second tube; 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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