KR20210092477A - Heat exchanger and air conditioner for vehicle having the same - Google Patents

Abstract

The present invention relates to a vehicle heat exchanger and a vehicle air conditioner including the same. According to an embodiment of the present invention, a vehicle heat exchanger comprises: a housing having an inlet and an outlet formed to flow in and out of a coolant; a pair of header tanks having a flow path through which a refrigerant moves; and a plurality of tubes disposed inside the housing and disposed in communication between the header tanks. The end of the housing is coupled to a coupling part formed in the header tank to prevent leakage of the coolant flowing into the housing. Accordingly, the vehicle heat exchanger may improve the heat exchange efficiency of the refrigerant and the coolant.

Description

Heat exchanger and vehicle air conditioner including the same {HEAT EXCHANGER AND AIR CONDITIONER FOR VEHICLE HAVING THE SAME}

The embodiment relates to a vehicle heat exchanger and an air conditioner for a vehicle including the same. In detail, a heat exchanger for a vehicle in which thermal efficiency is improved through a coupling structure of a header tank and a housing, and an air conditioner for a vehicle including the same are provided.

The vehicle is provided with an air conditioner for adjusting the air temperature in the room.

An air conditioning system (HVAC: Heating, Ventilating & Air Conditioning system) installed in a vehicle for the purpose of cooling/heating and ventilation of the interior of the vehicle uses a duct that connects the interior and exterior of the vehicle to supply cold/hot air to the interior of the vehicle. Alternatively, it may perform a ventilation function. Here, the vehicle air conditioner may include a compressor, a condenser, an expansion valve, an evaporator, and a pipe connecting the same to circulate the refrigerant as a heat exchange medium, and use a plurality of heat exchangers such as the condenser and the evaporator to control the temperature of the vehicle interior can be adjusted

These heat exchangers perform heat exchange using different types of heat exchange media. For example, heat exchange may be performed through a heat exchange medium such as a refrigerant and a coolant.

Accordingly, the heat exchanger includes a housing, a pair of header tanks disposed with the housing therebetween, and a plurality of header tanks connected between the header tanks to move the refrigerant supplied from any one of the header tanks to the other header tank. It may include two tubes. Here, the tube may be disposed to pass through the housing, and the tube may be disposed to be spaced apart from each other for heat exchange between the refrigerant and the coolant supplied to the inside of the housing.

When the refrigerant is supplied in such a heat exchanger, there is a problem in that the end of the tube is exposed to the outside and heat loss occurs.

Accordingly, there is a need for a structure of a vehicle heat exchanger capable of protecting the tube while preventing heat loss due to the end of the tube exposed to the outside.

The embodiment provides a coupling structure between a header tank and a housing for supplying refrigerant to the tube, thereby improving heat exchange efficiency of the heat exchanger and protecting the tube using the housing, and a vehicle heat exchanger including the same It provides an air conditioning system for a vehicle.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned here will be clearly understood by those skilled in the art from the following description.

The object includes: a housing having an inlet and an outlet formed so that the coolant flows in and out; a pair of header tanks having a flow path through which the refrigerant moves; and a plurality of tubes disposed inside the housing and disposed in communication between the header tanks, wherein an end of the housing is coupled to a coupling portion formed in the header tank to leak coolant flowing into the housing. This is achieved by a vehicle heat exchanger to prevent

The object includes: a housing having an inlet and an outlet formed so that the coolant flows in and out; a pair of header tanks having a flow path through which the refrigerant moves; and a plurality of tubes disposed in communication between the header tanks, wherein the housing is disposed to surround only a portion of the plurality of tubes to form a water cooling region in which the refrigerant and the coolant exchange heat, and an air cooling region in which the air and the coolant exchange heat. and the end of the housing is achieved by a vehicle heat exchanger for preventing leakage of coolant flowing into the housing by engaging with a coupling portion formed in the header tank.

Here, the interval D1 between the tubes disposed in the air cooling region may be greater than the interval D2 between the tubes disposed in the water cooling region.

Also, the coolant moving in the housing may exchange heat with the refrigerant in the header tank while contacting one side of the header tank.

In addition, the coupling part may be formed as a hole into which an end of the housing is inserted and coupled, and the end of the housing may be exposed inside the header tank.

In addition, a portion of the hole may be disposed on the width direction side of the header tank corresponding to the protrusion of the case coupled in the width direction.

The task is a first circulation line arranged to circulate the refrigerant; a compressor, a heat exchanger, an expansion means, and an evaporator disposed on the first circulation line based on the flow of the refrigerant; and a second circulation line disposed to circulate the cooling water, wherein the heat exchanger includes: a housing having an inlet and an outlet formed to flow in and out of the cooling water; a pair of header tanks having a flow path through which the refrigerant moves; and a plurality of tubes disposed in communication between the header tanks, wherein the housing is disposed to surround only a portion of the plurality of tubes to form a water cooling region in which the refrigerant and the coolant exchange heat, and an air cooling region in which the air and the coolant exchange heat. and the end of the housing is coupled to a coupling part formed in the header tank to prevent leakage of the coolant flowing into the housing.

Here, a radiator may be disposed on the second circulation line, and the radiator may be disposed to overlap the air cooling area based on the flow of air.

The coupling part may be formed as a hole into which an end of the housing is inserted and coupled, and the end of the housing may be exposed inside the header tank.

On the other hand, the object is a first circulation line arranged to circulate the refrigerant; a compressor, at least two heat exchangers, expansion means and an evaporator disposed on the first circulation line based on the flow of the refrigerant; and a second circulation line disposed to circulate the cooling water, wherein each of the heat exchangers includes: a housing having an inlet and an outlet formed to flow in and out of the cooling water; a pair of header tanks having a flow path through which the refrigerant moves; and a plurality of tubes disposed in communication between the header tanks, wherein the housing disposed to surround a portion of the tubes is detachably disposed in the header tank, and when the housing and the header tank are coupled, the The end of the housing is achieved by an air conditioner for a vehicle that is coupled to a coupling portion formed in the header tank to prevent leakage of coolant flowing into the housing.

The vehicle heat exchanger and the vehicle air conditioner including the same according to the embodiment improve the heat exchange efficiency of refrigerant and coolant supplied through a tube by using a housing disposed in contact with one side of a header tank, and at the same time, use the housing to improve the heat exchange efficiency. The tube can be protected.

Various and advantageous advantages and effects of the embodiments are not limited to the above, and will be more easily understood in the course of describing specific embodiments of the embodiments.

1 is a view showing an air conditioner for a vehicle according to a first embodiment;
2 is a perspective view showing a heat exchanger of the vehicle air conditioner according to the first embodiment;
3 is an exploded perspective view showing the heat exchanger of the vehicle air conditioner according to the first embodiment;
Figure 4 (a) is an enlarged view showing the area A1 of Figure 2,
Figure 4 (b) is an enlarged view showing the area A2 of Figure 3,
5 is a cross-sectional view taken along line AA of FIG. 2,
6 is a cross-sectional view taken along line BB of FIG. 2,
7 is a perspective view showing the housing of the heat exchanger;
8 is an exploded perspective view showing the housing of the heat exchanger;
9 is a view showing a header tank of the heat exchanger,
10 is a view showing an air conditioner for a vehicle according to a second embodiment;
11 is a perspective view illustrating a heat exchanger of an air conditioner for a vehicle according to a second embodiment;
12 is an exploded perspective view showing a heat exchanger of an air conditioner for a vehicle according to a second embodiment;
13 is a front view showing a heat exchanger of an air conditioner for a vehicle according to a second embodiment;
14 is a cross-sectional view taken along line A'-A' of FIG. 11;
15 is a cross-sectional view taken along line B'-B' of FIG. 11;
16 is a perspective view illustrating an arrangement relationship between a heat exchanger and a radiator of an air conditioner for a vehicle according to a second embodiment;
17 is a rear perspective view showing the arrangement relationship between the heat exchanger and the radiator of the vehicle air conditioner according to the second embodiment;
18 is a partially cut and enlarged view showing the coupling relationship between the heat exchanger and the radiator of the vehicle air conditioner according to the second embodiment in area A3 of FIG. 17;
19 is a partially cut-out enlarged view illustrating a coupling relationship between a heat exchanger and a radiator of the air conditioner for a vehicle according to the second embodiment in area A4 of FIG. 17 .

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

In the description of the embodiment, in the case where one component is described as being formed on "on or under" of another component, above (above) or below (below) (on or under) includes both components in which two components are in direct contact with each other or in which one or more other components are disposed between the two components indirectly. In addition, when expressed as 'up (up) or (down)' (on or under), the meaning of not only an upward direction but also a downward direction based on one component may be included.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, the embodiment will be described in detail with reference to the accompanying drawings, but regardless of the reference numerals, the same or corresponding components are given the same reference numerals, and the overlapping description thereof will be omitted.

The air conditioner for a vehicle according to an embodiment may improve air conditioning quality in the vehicle by controlling an air conditioning condition inside the vehicle by using various air conditioning modes. In this case, the vehicle air conditioner may be controlled by an ECU of the vehicle.

Here, the vehicle heat exchanger used in the vehicle air conditioner includes a housing, a pair of header tanks disposed with the housing therebetween, and the header to move the refrigerant supplied from one of the header tanks to the other header tank. It may include a plurality of tubes connecting between the tanks.

In this case, the heat exchanger for a vehicle according to the embodiment may provide a coupling structure between the header tank and the housing to improve thermal efficiency of the heat exchanger and protect the tube using the housing.

first embodiment

1 is a view showing an air conditioner for a vehicle according to a first embodiment, and FIG. 2 is a perspective view showing a heat exchanger of the air conditioner for a vehicle according to the first embodiment. In FIG. 2, based on the longitudinal direction of the tube 300 disposed in the heat exchanger 10 of the vehicle air conditioner 1, the x direction shown in FIG. 2 is the longitudinal direction, the y direction is the width direction, and The z-direction may indicate an up-down direction or a vertical direction.

Referring to FIG. 1 , in the vehicle air conditioner 1 according to the embodiment, a first circulation line L1 through which a second heat exchange medium such as a refrigerant circulates and a second circulation line through which a first heat exchange medium such as a coolant circulates ( L2) may be included. In addition, the first heat exchange medium and the second heat exchange medium may exchange heat in the heat exchanger 10 of the vehicle air conditioner 1 . Accordingly, the second heat exchange medium may cool the interior of the vehicle. Here, a pipe may be used as the first circulation line L1 and the second circulation line L2. In addition, the heat exchanger 10 that cools the refrigerant using cooling water may be referred to as a water-cooled heat exchanger.

At this time, on the first circulation line (L1) on the basis of the flow of the refrigerant, the heat exchanger 10 according to the embodiment, the expansion means 20 for throttling the refrigerant condensed and liquefied in the heat exchanger 10, It may include an evaporator 30 for cooling the air by exchanging the low-pressure liquid refrigerant throttled by the expansion means 20 with air supplied to the interior of the vehicle, and a compressor 40 for compressing and discharging the refrigerant. there is. Here, the heat exchanger 10 may condense the refrigerant discharged from the compressor 40 . In addition, as the expansion means 20 , a mechanical expansion valve or an electronic expansion valve for expanding the refrigerant may be used.

In addition, a radiator 50 and a battery module B may be disposed on the second circulation line L2 . Accordingly, in the radiator 50 , the outside air and the cooling water may exchange heat. In addition, the heat-exchanged coolant may control the temperature of the battery module (B). Here, the outdoor air may mean air introduced from the outside of the vehicle toward the radiator 50, and the outdoor air may be referred to as a third heat exchange medium. In this case, the radiator 50 may be disposed not to overlap the heat exchanger 10 so that the flow of the outside air is not interfered with by the heat exchanger 10 .

Referring to FIG. 1 , in the vehicle air conditioner 1, since the refrigerant and the coolant can exchange heat in the heat exchanger 10, the heat exchanger 10 disposed in the vehicle air conditioner 1 is a water-cooled heat exchanger. can

Referring to FIG. 2 , the vehicle air conditioner 1 may include the two heat exchangers 10 . Accordingly, the cooling performance of the vehicle air conditioner 1 may be improved compared to a case in which one heat exchanger 10 is disposed.

Here, as shown in FIG. 2 , the vehicle air conditioner 1 exemplifies the arrangement of the two heat exchangers 10 , but is not limited thereto. For example, one heat exchanger 10 may be installed in the vehicle in consideration of the arrangement relationship of the vehicle air conditioner 1 and other components disposed inside the vehicle.

3 is an exploded perspective view showing the heat exchanger of the vehicle air conditioner according to the first embodiment, FIG. 4 is an enlarged view showing the coupling relationship between the housing of the heat exchanger and the header tank, and FIG. 5 is a cross-sectional view taken along line AA of FIG. and FIG. 6 is a cross-sectional view taken along line BB of FIG. 2 . In FIG. 4 , FIG. 4A is an enlarged view illustrating area A1 of FIG. 2 , and FIG. 4B is an enlarged view illustrating area A2 of FIG. 3 .

2 to 6 , the heat exchanger 10 includes a housing 100 having an inlet 130 and an outlet 140 formed to flow in and out of cooling water, and a pair of header tanks having a flow path through which the refrigerant moves. 200 , and a plurality of tubes 300 disposed inside the housing 100 and disposed in communication between the header tanks 200 . In addition, a fin 400 may be further disposed between the tubes 300 . In addition, the heat exchanger 10 may further include a receiver dryer (not shown) connected in communication with the header tank 200 to separate the refrigerant in the vapor phase and the refrigerant in the liquid phase.

In this case, an end of the housing 100 may be coupled to a coupling portion formed in the header tank 200 . Accordingly, since leakage of the coolant introduced into the housing 100 can be prevented, the coolant moving in the space S formed inside the housing 100 is separated from one side of the header tank 200 . While in contact, heat exchange with the refrigerant inside the header tank 200 is possible.

Referring to FIG. 4 , the x-direction end of the housing 100 is coupled to the coupling part, so that the housing 100 may directly contact one side of the header tank 200 . In addition, the end of the tube 300 may be prevented from being exposed to the outside by the contact arrangement between the housing 100 and the header tank 200 . Furthermore, leakage of the coolant moving in the space S formed inside the housing 100 may also be prevented by the arrangement.

Accordingly, since the heat exchange area of the refrigerant and the cooling water is improved by the arrangement, the thermal efficiency of the heat exchanger 10 may be improved. And, the end of the tube 300 may be protected by the arrangement.

As shown in FIG. 4 , the coupling part may be provided with a hole formed to correspond to an end of the housing 100 . Accordingly, an end of the housing 100 may be inserted into the hole and coupled thereto. Here, a hole formed in the header tank 200 and coupled to an end of the housing 100 may be referred to as a first hole.

Meanwhile, since one region of the end of the housing 100 may be disposed to be exposed in the header tank 200 , it may come into contact with the refrigerant moving in the header tank 200 .

The housing 100 and the header tank 200 may form an outer shape of the heat exchanger 10 . In this case, the housing 100 may be disposed to surround the tube 300 and the fin 400 . Accordingly, the tube 300 may be prevented from being exposed to the outside by the housing 100 . Here, the housing 100 may be formed in a structure of a pair of plate-shaped plates coupled to the side surface of the tube 300 .

The housing 100 may be disposed between a pair of header tanks 200 . Here, the housing 100 may be formed in a cylindrical shape with openings formed on one side and the other side, and an end of the housing 100 having the openings formed thereon may be coupled to the header tank 200 . That is, the header tank 200 may be disposed to cover the opening of the housing 100 .

Accordingly, by the arrangement of the housing 100 and the header tank 200 , a space S may be formed inside the housing 100 to allow the coolant to move.

7 is a perspective view showing the housing of the heat exchanger, and FIG. 8 is an exploded perspective view showing the housing of the heat exchanger.

7 and 8 , the housing 100 includes a pair of cases 110 and a supporter 120 disposed to be spaced apart from each other in the vertical direction so as to cover the upper and lower portions of the pair of cases 110 . may include. In addition, the housing 100 may include an inlet 130 and an outlet 140 formed in the case 110 for the inlet and outlet of the coolant. In this case, the inlet 130 and the outlet 140 are formed in the case 110 as an example, but is not necessarily limited thereto. For example, the inlet 130 and the outlet 140 may be formed in the supporter 120 . Here, the supporter 120 may be referred to as a cover.

The pair of cases 110 may be disposed to be spaced apart from each other in the width direction. In addition, the case 110 may be formed in a 'C' shape in consideration of coupling with the coupling portion of the hater tank 200 .

As shown in FIG. 8 , the case 110 may include a case body 111 and a protrusion 112 formed to protrude from an end of the case body 111 .

The case body 111 may be formed in a plate shape. At this time, the case body 111 may serve as a side wall so that the refrigerant moves in the space (S).

In addition, the inlet 130 and the outlet 140 may be formed in at least one of the case body 111 . Here, it is exemplified that both the inlet 130 and the outlet 140 are formed in one case body 111, but the present invention is not limited thereto. For example, the inlet 130 may be formed in one of the case body 111 and the outlet 140 may be formed in the other.

In addition, the protrusions 112 formed on each of the pair of cases 110 may protrude to face each other. In addition, the protrusion 112 may be coupled to a coupling portion formed in the header tank 200 .

The supporter 120 may be disposed on the upper and lower portions of the case 110 , and may be formed in a plate shape. In this case, the supporter 120 may be coupled to the case 110 by a coupling method such as brazing welding.

In addition, the longitudinal end of the supporter 120 may be coupled to the coupling portion. Here, the supporter 120 may be preferentially coupled to the header tank 200 than the case 110 so as to support a state in which the plurality of tubes 300 are coupled to the header tank 200 . For example, when the tube 300 is coupled to the header tank 200 , the supporter 120 may also be coupled to the header tank 200 .

The header tank 200 may be disposed on one side and the other side of the housing 100 . In this case, the header tank 200 may be provided as a pair.

In addition, a refrigerant passage, which is a passage through which the refrigerant may move, may be formed in the header tank 200 . Accordingly, the header tank 200 may be formed in a cylindrical shape including a refrigerant passage.

A plurality of tubes 300 may be connected between the header tanks 200 . Accordingly, the refrigerant introduced into the header tank 200 may be supplied to the tube 300 through the refrigerant passage.

9 is a view showing a header tank of the heat exchanger.

9, the header tank 200 includes a side plate 210 forming one side of the space S, and a cover that is coupled to the side plate 210 to form a passage through which the refrigerant can move therein. 220), a first hole 230 to which the housing 100 is coupled, and a second hole 240 to which the tube 300 is coupled. In addition, the header tank 200 may further include a diaphragm 250 disposed to guide the movement of the refrigerant inside the header tank 200 .

The side plate 210 and the cover 220 may form the outer shape of the header tank 200 . In addition, a passage through which the refrigerant can move may be formed by the coupling of the side plate 210 and the cover 220 . Here, the side plate 210 and the cover 220 may be integrally formed.

The side plate 210 may be formed in a plate shape. In addition, the housing 100 may be coupled to the side plate 210 . Accordingly, the side plate 210 may function as a side wall forming the space S together with the case 110 and the supporter 120 .

As shown in FIG. 9 , the side plate 210 is a plate-shaped side plate body 211 that functions as a side wall to form the space S, and from both sides of the side plate body 211 in the longitudinal direction. It may include a protruding side plate protrusion 212 . Here, the side plate protrusion 212 may be formed to protrude in a plate shape from both sides of the side plate body 211 to form a passage through which the refrigerant can move and coupled with the cover 220 .

The cover 220 may be coupled to one side of the side plate 210 in the longitudinal direction. In this case, the cover 220 may form a passage through which the refrigerant can move therein by combining the side plate protrusion 212 and the side plate protrusion 212 of the side plate 210 through brazing welding.

And, as shown in FIG. 9 , a hole or a groove may be formed in the cover 220 for fixing the diaphragm 250 .

The first hole 230 may serve as a coupling portion provided for coupling with the housing 100 . Accordingly, the first hole 230 and the end of the housing 100 may form a coupling structure that guides the coupling between the housing 100 and the header tank 200 .

Also, the first hole 230 may be a hole formed to pass through the side plate 210 in the longitudinal direction. Here, the first hole 230 may be formed in the side plate body 211 . However, when the supporter 120 is coupled to the header tank 200 in a state in which the plurality of tubes 300 are coupled to the header tank 200, the protrusion 112 of the case 110 is The first hole 230 may extend from the side plate body 211 to the side plate protrusion 212 so as to be coupled to the first hole 230 .

That is, a portion of the first hole 230 may be disposed to extend to the width direction side of the header tank 200 to correspond to the protrusion 112 of the case 110 coupled in the width direction. For example, in consideration of coupling with the case 110 , the first hole 230 may be formed up to one area in the width direction of the side plate protrusion 212 of the header tank 200 .

Here, the first hole 230 has a hole shape in consideration of thermal efficiency and compatibility with the housing 100 as an example, but is not limited thereto. For example, the coupling portion may be formed in a groove shape. When the coupling portion is provided as a groove, the contact area between the housing 100 and the header tank 200 may be sealed through brazing welding or a sealing member.

The second hole 240 may be formed in the side plate 210 for coupling with the tube 300 . As shown in FIG. 9 , a plurality of second holes 240 may be formed in the side plate 210 to be spaced apart from each other in the vertical direction.

The diaphragm 250 may be disposed inside the header tank 200 to form a refrigerant flow path for guiding the refrigerant flowing into the header tank 200 . In this case, a plurality of the diaphragms 250 may be disposed to be spaced apart from each other in the vertical direction. Accordingly, when viewed from the width direction, the heat exchanger 10 may guide the refrigerant in a zigzag shape using the diaphragm 250 and the tube 300 .

The tube 300 is disposed between the header tanks 200 to guide the refrigerant to move along the inside. In this case, the end of the tube 300 may be coupled to the second hole 240 of the header tank 200 . Accordingly, the heat exchanger 10 may induce heat exchange between the refrigerant moving through the tube 300 and the cooling water moving through the space between the tubes 300 inside the housing 100 .

The tube 300 may be formed in an elongated shape, and a plurality of flow paths may be formed therein in consideration of heat exchange efficiency.

The fins 400 are provided in plurality, and are disposed between the plurality of tubes 300 to increase heat exchange efficiency. Here, the fin 400 may be provided to have a zigzag shape or a wavy cross-sectional structure, and both sides may be disposed to contact the outer surface of the tube 300 . For example, the fin 400 may be a louver fin.

second embodiment

10 is a view showing an air conditioner for a vehicle according to a second embodiment, FIG. 11 is a perspective view showing a heat exchanger of the air conditioner for a vehicle according to the second embodiment, and FIG. 12 is a heat exchange of the air conditioner for a vehicle according to the second embodiment It is an exploded perspective view showing the air conditioner, FIG. 13 is a front view showing a heat exchanger of an air conditioner for a vehicle according to the second embodiment, FIG. 14 is a cross-sectional view taken along line A'-A' of FIG. 11, and FIG. 15 is a view B'- of FIG. 11 . It is a cross-sectional view taken along line B'.

1 and 10, when comparing the vehicle air conditioner 1 according to the first embodiment and the vehicle air conditioner 1a according to the second embodiment, the vehicle air conditioner 1a according to the second embodiment ), the heat exchanger 10a is different in that it is a water-cooled/air-cooled combined heat exchanger that uses air and cooling water to cool a refrigerant.

Hereinafter, in the description of the vehicle air conditioner 1a according to the second embodiment and the heat exchanger 10a disposed in the vehicle air conditioner 1a, the vehicle air conditioner 1 and the vehicle air conditioner 1 according to the first embodiment Elements identical to those of the heat exchanger 10 disposed in the air conditioner 1 may be denoted by the same reference numerals, and a detailed description thereof will be omitted.

Referring to FIG. 10 , the vehicle air conditioner 1a according to the second embodiment may include a first circulation line L1 through which a refrigerant circulates and a second circulation line L2 through which a coolant circulates. In addition, in the heat exchanger 10a of the vehicle air conditioner 1a, the refrigerant may exchange heat with the coolant and air. Accordingly, the heat exchanger 10a of the vehicle air conditioner 1a may be a water-air-cooling combined heat exchanger.

At this time, on the first circulation line (L1) on the basis of the flow of the refrigerant, the heat exchanger (10a) according to the embodiment, the expansion means (20) for throttling the refrigerant condensed and liquefied in the heat exchanger (10a), It may include an evaporator 30 for cooling the air by exchanging the low-pressure liquid refrigerant throttled by the expansion means 20 with air supplied to the interior of the vehicle, and a compressor 40 for compressing and discharging the refrigerant. there is. Here, the heat exchanger 10a may condense the refrigerant discharged from the compressor 40 .

In addition, a radiator 50 and a battery module B may be disposed on the second circulation line L2 . In this case, based on the flow of air introduced into the vehicle from the outside, the radiator 50 may be disposed to overlap the air cooling area of the heat exchanger 10a. For example, the air that has exchanged heat with the heat exchanger 10a using a duct (not shown) and a door (not shown) for opening and closing the duct is supplied to the radiator 50 and cooling water passing through the radiator 50 . can exchange heat with Accordingly, the temperature of the battery module B may be more effectively controlled by controlling the coolant moving along the second circulation line L2 according to the air conditioning mode of the vehicle air conditioner 1a.

The heat exchanger 10a may include an air-cooling region 11 in which air and refrigerant exchange heat and a water-cooling region 12 in which cooling water and refrigerant exchange heat. Accordingly, the refrigerant heat-exchanged with the air in the air-cooling region 11 moves to the water-cooling region 12 and then exchanges heat with the cooling water, so that the thermal efficiency of the heat exchanger 10a may be improved. Here, the refrigerant of the heat exchanger 10a moves from the air-cooling region 11 to the water-cooling region 12 as an example, but is not necessarily limited thereto. For example, the refrigerant may move from the water cooling area 12 to the air cooling area 11 by the arrangement and the air conditioning mode of the vehicle air conditioner 1a.

Also, the air cooling region 11 of the heat exchanger 10a may be disposed to overlap the radiator 50 based on the flow of air. Accordingly, the air heat-exchanged with the second heat exchanger 10a may be supplied to the radiator 50 to exchange heat with the coolant passing through the radiator 50 .

11 to 15 , the heat exchanger 10a includes a housing 100 having an inlet 130 and an outlet 140 formed to flow in and out of the coolant, and a pair of header tanks in which a flow path for the coolant is formed. 200 , and a plurality of tubes 300 disposed in communication between the header tank 200 .

Here, the housing 100 may be disposed to surround only a portion of the plurality of tubes 300 to form the water cooling region 12 . Accordingly, the plurality of tubes 300 on which the housing 100 is not disposed may form the air cooling region 11 .

Meanwhile, the heat exchanger 10a may further include a fin 400 disposed between the tubes 300 disposed in the water cooling region 12 . In addition, the heat exchanger 10a may further include a receiver dryer (not shown) that is connected in communication with the header tank 200 to separate a gaseous refrigerant and a liquid refrigerant.

The housing 100 may be disposed only in the water cooling region 12 .

And, like the heat exchanger 10 of the vehicle air conditioner 1 according to the first embodiment, the housing 100 constituting the heat exchanger 10a of the vehicle air conditioner 1a according to the second embodiment. The end may be coupled to the first hole 230 provided as a coupling part formed in the header tank 200 . Accordingly, since leakage of the coolant introduced into the housing 100 can be prevented, the coolant moving in the space S formed inside the housing 100 is separated from one side of the header tank 200 . While in contact, heat exchange with the refrigerant inside the header tank 200 is possible.

In addition, the housing 100 includes a pair of cases 110 , a supporter 120 disposed to be spaced apart in the vertical direction to cover the upper and lower portions of the pair of cases 110 , and a case for inflow and outflow of coolant. It may include an inlet 130 and an outlet 140 formed at 110 .

The header tank 200 includes a side plate 210 , a cover 220 which is coupled to the side plate 210 to form a passage through which the refrigerant can move therein, and a first hole 230 to which the housing 100 is coupled. ), a second hole 240 to which the tube 300 is coupled, and a diaphragm 250 disposed to guide the movement of the refrigerant in the space formed by the side plate 210 and the cover 220 . can do. In this case, one area of the side plate 210 may form one side of the space S so that the coolant can move.

The tube 300 is disposed between the header tanks 200 to guide the refrigerant to move. In this case, the end of the tube 300 may be coupled to the second hole 240 of the header tank 200 . Accordingly, in the case of some tubes 300 disposed inside the housing 100 , the refrigerant moving through the tube 300 and the tube 300 in the housing 100 move through the space. It can induce heat exchange between the coolants. Here, the tube 300 may be formed in an elongated shape, and a plurality of flow paths may be formed therein in consideration of heat exchange efficiency.

The plurality of tubes 300 may be disposed to be spaced apart from each other in the vertical direction.

14 and 15 , the vertical distance D1 of the tube 300 disposed in the air cooling region 11 is the vertical spacing D1 of the tube 300 disposed in the water cooling region 12 ( D2) and may be different. Here, the interval D1 between the tubes 300 arranged in the air cooling region 11 may be referred to as a first interval, and the interval D2 between the tubes 300 arranged in the water cooling region 12 is the second interval. It can be called gap.

In detail, in consideration of the sequential heat exchange amount of the refrigerant and the effect of the heat exchange amount on the vehicle air conditioner due to heat exchange between air and refrigerant and heat exchange between coolant and refrigerant, the first interval D1 is the second interval It can be adjusted based on (D2). For example, the first interval D1 may be formed to be 2 to 3 times larger than the second interval D2.

The fins 400 are provided in plurality, and are disposed between the plurality of tubes 300 disposed inside the housing 100 to increase heat exchange efficiency. Here, the fin 400 may be provided to have a zigzag shape or a wavy cross-sectional structure, and both sides may be disposed to contact the outer surface of the tube 300 . In this case, the pin 400 may be a louver pin.

Meanwhile, referring to the above embodiments, some configurations of the heat exchanger according to the embodiment may be shared. For example, by detachably installing the housing 100 of the heat exchanger, some configurations of the heat exchanger can be shared, and thus can be installed in response to various vehicles. Accordingly, the productivity of the heat exchanger can be improved.

1 to 15 , in the vehicle air conditioner according to the embodiment, a first circulation line L1 through which a refrigerant circulates is disposed on the first circulation line L1 based on the flow of the refrigerant. It may include a compressor 40, at least two heat exchangers, an expansion means 20, an evaporator 30, and a second circulation line L2 arranged to circulate the coolant.

Here, each of the heat exchangers includes a housing 100 having an inlet 130 and an outlet 140 formed to flow in and out of the coolant, a pair of header tanks 200 having a flow path through which the coolant moves, and the header tank It may include a plurality of tubes (300) disposed in communication between the (200). In this case, the housing 100 is disposed to surround a part of the tube 300 , and may be detachably disposed in the header tank 200 . When the housing 100 and the header tank 200 are coupled, the end of the housing 100 is coupled to the coupling part formed in the header tank 200 to prevent leakage of the coolant flowing into the housing. can

Accordingly, the vehicle heat exchanger may implement a water-cooled heat exchanger or a water-cooled/air-cooled combined heat exchanger using at least two housings 100 that are detachably disposed to surround a portion of the plurality of tubes 300 .

For example, if the housing 100 is added to the air-cooling region 11 of the heat exchanger 10a disposed in the vehicle air conditioner 1a according to the second embodiment, the vehicle air conditioner 1 according to the first embodiment A pair of heat exchangers 10 to be disposed may be implemented. In this case, before disposing the housing 100 in the air cooling region 11 , the fins 400 may be disposed between the tubes 300 .

That is, since the housing 100 can be selectively used in the air cooling region 11 of the heat exchanger 10a disposed in the vehicle air conditioner 1a according to the second embodiment, the housing 100 may be used in some cases. It is possible to implement a heat exchanger module in which the common structure of the heat exchanger is modularized to be detachable. Accordingly, the productivity of the heat exchanger and the vehicle air conditioner including the same according to the embodiment may be improved.

17 is a rear perspective view showing the arrangement relationship between the heat exchanger and the radiator of the vehicle air conditioner according to the second embodiment, and FIG. 18 is a coupling relationship between the heat exchanger and the radiator of the vehicle air conditioner according to the second embodiment in area A3 of FIG. is a partially cut-away enlarged view, and FIG. 19 is a partially cut-away enlarged view showing the coupling relationship between the heat exchanger and the radiator of the vehicle air conditioner according to the second embodiment in area A4 of FIG. 17 .

Referring to FIG. 10 , based on the flow of air introduced into the vehicle from the outside, the radiator 50 may be disposed to overlap the air cooling region 11 of the heat exchanger 10a. At this time, the air heat-exchanged with the heat exchanger 10a may be supplied to the radiator 50 to exchange heat with the cooling water passing through the radiator 50 .

Also, the cooling water supplied to the radiator 50 through the second circulation line L2 may exchange heat with the refrigerant through the water cooling region 12 of the heat exchanger 10a.

10 and 17 to 19 , the radiator 50 may include a radiator body 51 and a pair of radiator tanks 52 disposed with the radiator body 51 therebetween. Accordingly, the coolant supplied to one of the radiator tanks 52 may pass through the radiator body 51 and move to the other radiator tank 52 to exchange heat with air. Here, the radiator tank 52 is a first radiator tank 52a that receives coolant through the second circulation line L2 and delivers it to the radiator body 51 and receives coolant from the radiator body 51 . It may include a second radiator tank (52b).

Referring to FIG. 18 , the second radiator tank 52b, which is one of the radiator tanks 50 , may communicate with the inlet 130 of the heat exchanger 10a. Accordingly, the coolant heat-exchanged in the radiator body 51 may be supplied to the inlet of the heat exchanger 10a through the second radiator tank 52b.

Referring to FIG. 19 , the outlet 140 of the heat exchanger 10a may be connected to one side of a pipe forming the second circulation line L2 . Accordingly, the cooling water passing through the radiator 50 may move to the pipe of the second circulation line L2 through the water cooling region 12 .

Although the above has been described with reference to the embodiments of the present invention, those of ordinary skill in the art can variously modify and modify the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be changed. And, it should be construed as being included in the scope of the present invention defined in the appended claims for differences related to such modifications and changes.

1, 1a: vehicle air conditioning system
10: first heat exchanger 10a: second heat exchanger
20: connection
100: housing 110: case
120: supporter 130: entrance
140: exit
200: header tank
230: first hole 240: second hole
300: tube
400: pin

Claims (10)

a housing having an inlet and an outlet formed to flow in and out of the coolant;
a pair of header tanks having a flow path through which the refrigerant moves; and
A plurality of tubes disposed inside the housing and disposed in communication between the header tanks,
The end of the housing is coupled to a coupling part formed in the header tank to prevent leakage of coolant flowing into the housing. a housing having an inlet and an outlet formed to flow in and out of the coolant;
a pair of header tanks having a flow path through which the refrigerant moves; and
A plurality of tubes disposed in communication between the header tanks,
The housing is disposed to surround only a portion of the plurality of tubes to form a water-cooling region in which the refrigerant and the coolant exchange heat, and an air-cooling region in which the air and the coolant exchange heat,
The end of the housing is coupled to a coupling part formed in the header tank to prevent leakage of coolant flowing into the housing. 3. The method of claim 1 or 2
A heat exchanger for a vehicle in which the coolant moving in the housing is in contact with one side of the header tank and heat-exchanges with the refrigerant in the header tank. 3. The method of claim 1 or 2,
The coupling part is formed with a hole into which the end of the housing is inserted and coupled,
An end of the housing is disposed to be exposed inside the header tank. 5. The method of claim 4,
A portion of the hole is disposed on the width direction side of the header tank corresponding to the protrusion of the case coupled in the width direction. 3. The method of claim 2,
The distance (D1) between the tubes disposed in the air-cooling region is greater than the distance (D2) between the tubes disposed in the water-cooling region. a first circulation line arranged to circulate the refrigerant;
a compressor, a heat exchanger, an expansion means, and an evaporator disposed on the first circulation line based on the flow of the refrigerant; and
It includes a second circulation line arranged to circulate the cooling water,
the heat exchanger
a housing having an inlet and an outlet formed to flow in and out of the coolant;
a pair of header tanks having a flow path through which the refrigerant moves; and
A plurality of tubes disposed in communication between the header tanks,
The housing is disposed to surround only a portion of the plurality of tubes to form a water-cooling region in which the refrigerant and the coolant exchange heat, and an air-cooling region in which the air and the coolant exchange heat,
An end of the housing is coupled to a coupling part formed in the header tank to prevent leakage of coolant flowing into the housing. 8. The method of claim 7,
A radiator is disposed on the second circulation line,
The radiator is disposed to overlap the air cooling area based on the air flow. 8. The method of claim 7,
The coupling part is formed with a hole into which the end of the housing is inserted and coupled,
An end of the housing is disposed to be exposed inside the header tank. a first circulation line arranged to circulate the refrigerant;
a compressor, at least two heat exchangers, expansion means, and an evaporator disposed on the first circulation line based on the flow of the refrigerant; and
It includes a second circulation line arranged to circulate the cooling water,
Each of the heat exchangers,
a housing having an inlet and an outlet formed to flow in and out of the coolant;
a pair of header tanks having a flow path through which the refrigerant moves; and
A plurality of tubes disposed in communication between the header tanks,
The housing disposed to surround a portion of the tube is detachably disposed in the header tank,
When the housing and the header tank are coupled, an end of the housing is coupled to a coupling part formed in the header tank to prevent leakage of coolant flowing into the housing.

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