KR20160053368A - Air conditioner for vehicle - Google Patents

Abstract

Disclosed is an air conditioning device for a vehicle, which integrally has a fixing unit for fixing refrigerant and cooling water inflow and outflow pipes in a case. The air conditioning device for a vehicle includes: a case main body having an air path formed inside and discharging inner air or outer air to the inside of the vehicle by sucking the air or the outer air; an evaporator and a heater core installed on the air path of the case main body in order in an air flowing direction; the refrigerant inflow and outflow pipes circulating a refrigerant by the evaporator; the cooling water inflow and outflow pipes circulating cooling water by the heater core; and a cooling and heating pipe fixing unit fixed to the refrigerant inflow and outflow pipes and the cooling water inflow and outflow pipes and installed in the case main body. Therefore, the air conditioning device for a vehicle can reduce manufacturing costs by reducing an assembly man-hour and the number of components as there is no need to individually include the fixing unit of a refrigerant pipe and the fixing unit of a cooling water pipe. Also, the air conditioning device for a vehicle can prevent the refrigerant or the cooling water from leaking due to the vibration of the vehicle and can improve assembly performance.

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioner for an automobile,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner having a fixing structure of a cooling water inlet / outlet pipe connected to a refrigerant inlet / outlet pipe and a heater nose connected to an evaporator.

2. Description of the Related Art Generally, an air conditioner of a vehicle is an apparatus for cooling or heating a vehicle interior by introducing air outside the vehicle into a vehicle interior or heating or cooling the air in a vehicle interior, A heater core for heating operation, and an air blowing mode switching door for blowing air cooled or heated by the evaporator or the heater core to each part of the interior of the vehicle.

FIG. 1 is a perspective view of a conventional air conditioner for a vehicle, FIG. 2 is an exploded perspective view of a conventional air conditioner for a vehicle, and FIG. 3 is a perspective view showing a conventional air conditioner for a vehicle.

1 to 3, a conventional automotive air conditioner 1 includes an air blowing device 10 and an air conditioning case 40. The air blowing device 10 is provided with an inside air inlet 21 and an outside air inlet 22 at one side and an inside and outside air switching door 23 for selectively opening and closing the inside and outside air inflow ports 21 and 22, And a blowing fan 35 for forcedly blowing the inside and outside air toward the air inlet 43 side of the air conditioning case 40.

The air conditioning case 40 is provided with an air inlet 43 through which the air blown from the air blowing device 10 flows and an air outlet 44 through which the air is discharged. The air conditioning case 40 includes an evaporator 41, And a heater core 42 are provided. A temperature control door 45 is provided between the evaporator 41 and the heater core 42 to adjust the opening degree of the cold air passage for bypassing the hot air passage passing through the heater core 42 and the heater core 42. [ To adjust the temperature. A mode door 46 is provided in each of the plurality of air discharge openings 44 to open and close the corresponding air discharge opening 44 according to various air conditioning modes.

The air conditioner case 40 has a structure in which the upper case 40a and the lower case 40c are coupled to each other to prevent leakage of the condensed water. An evaporator 41 is assembled between the upper and lower cases 40a and 40b and the lower case 40c. In this case, the upper cases 40a and 40b are composed of a left case 40a and a right case 40b and are fastened to each other.

The evaporator 41 is provided with a refrigerant inlet / outlet pipe 47 at one side thereof for introducing and discharging the refrigerant, and an external refrigerant pipe (not shown) is provided at the end of the refrigerant inlet / outlet pipe 47, The flange 49 is engaged. In addition, the heater core 42 is provided with a cooling water inlet / outlet pipe 48 on one side so as to allow the cooling water to flow in and out. The cooling water flowing through the engine flows into the inside of the cooling water inlet / outlet pipe 48.

However, in the conventional vehicle air conditioner, the air conditioning case 40 is fixed to the vehicle body through grooves or a separate compression type seal to fix the refrigerant and cooling water inlet / outlet pipes 47 and 48 , The refrigerant and cooling water inlet and outlet pipes 47 and 48 as well as to increase the cost and limit the position of the refrigerant and cooling water inlet and outlet pipes 47 and 48 So that there is a problem that the degree of freedom in design is lowered. Further, when a separate fixing member such as a bracket is omitted, there is a problem that the refrigerant or cooling water leaks because it is vulnerable to vehicle vibration.

Patent Document: Japanese Patent Publication No. 3900392 (Jan. 12, 2007)

In order to solve such a conventional problem, the present invention provides a vehicle air conditioner in which a fixing means for fixing a refrigerant and a cooling water inlet and outlet pipe are integrally formed in a case.

The air conditioner for a vehicle according to the present invention includes a case body formed with an air passage formed therein to discharge air or outside air into a vehicle cabin, an evaporator and a heater disposed in sequence in the air flow direction on the air passage of the case body, And a cooling water inlet and outlet pipe for circulating cooling water to the heater core, the pipe support portion protruding from the outer surface of the case main body, and the coolant inlet and outlet pipe, And a cooling / heating pipe fixing unit installed on the case body for fixing the bracket to the upper and lower portions of the outlet pipe, the cooling water inlet / outlet pipe, and fixing the refrigerant inlet / outlet pipe and the cooling water inlet / outlet pipe together.

The case body is provided with a support portion having a first refrigerant pipe fixing groove and a first cooling water pipe fixing groove formed therein; A first bracket having a second refrigerant pipe fixing groove for fixing a refrigerant inlet and an outlet pipe, and a second bracket having a second cooling water pipe fixing groove for fixing the cooling water inlet and outlet pipe.

In the above, the support portion is integrally formed or detachable from the case body.

In this case, the refrigerant inlet / outlet pipe and the cooling water inlet / outlet pipe are mounted on the support portion protruding from the outer surface of the case body, and then the first bracket and the second bracket are fastened to the upper and lower portions.

The support portion includes an upper support portion having an upper surface formed with the first refrigerant pipe fixing groove and a lower support portion facing the upper support portion and formed on the lower surface of the first cooling water pipe fixing groove.

The first bracket has a second refrigerant pipe fixing groove facing the first refrigerant pipe fixing groove, and the second bracket has a second cooling water pipe fixing groove facing the first cooling water pipe fixing groove.

In the above, the first and second brackets support the refrigerant inlet, outlet pipe, and cooling water inlet and outlet pipes from outside in the vehicle width direction.

In the above, the second bracket having the second cooling water pipe fixing groove is integrally formed with the heat insulating cover covering the cooling water inlet and outlet pipes.

Since the vehicle air conditioning system according to the present invention does not need to include the fixing means for the refrigerant pipe and the fixing means for the cooling water pipe, the manufacturing cost can be reduced by reducing the number of components and assembling air, And the assembling property is improved.

Fig. 1 shows a schematic configuration of a conventional automotive air conditioner,
2 is an exploded perspective view showing a conventional automotive air conditioner,
3 is a perspective view showing a conventional air conditioner for a vehicle,
4 is a cross-sectional view showing the inside of the air conditioner according to the embodiment of the present invention,
5 is an exploded perspective view illustrating a vehicle air conditioning system according to an embodiment of the present invention,
6 is a perspective view showing a vehicle air conditioning system according to an embodiment of the present invention,
7 is a front view showing a support portion of a vehicle air conditioner according to an embodiment of the present invention,
8 is a front view showing a first bracket of a vehicle air conditioning system according to an embodiment of the present invention,
9 is a front view showing a second bracket of the vehicle air conditioning system according to the embodiment of the present invention,
10 is a perspective view illustrating a state in which a first bracket of a vehicle air conditioner according to an embodiment of the present invention is coupled to a support portion,
FIG. 11 is a front view showing a cooling / heating pipe fixing unit of the automotive air conditioner according to the embodiment of the present invention. FIG.

Hereinafter, the technical configuration of the air conditioner for a vehicle will be described in detail with reference to the accompanying drawings.

FIG. 4 is a cross-sectional view illustrating the inside of a vehicle air conditioner according to an embodiment of the present invention, FIG. 5 is an exploded perspective view illustrating a vehicle air conditioner according to an embodiment of the present invention, 1 is a perspective view showing a vehicle air conditioner according to an embodiment.

4 to 6, a vehicle air conditioner 100 according to an embodiment of the present invention includes a case body formed with an air passage therein and configured to discharge indoor air or outdoor air into a vehicle interior, An evaporator 101 and a heater core 102 which are installed in order in the air flow direction on the air passage of the evaporator 101, a refrigerant inlet and outlet pipe 147 for circulating the refrigerant to the evaporator 101, And a cooling water inlet and outlet pipe 148 for circulating the cooling water.

In this case, the case body forms an outer housing of the air conditioner, and includes the air conditioning case 110 and the scroll case 155. That is, the air conditioner of this embodiment is a semi-center mounting type in which an air blowing unit and an air conditioning unit are combined, and can be largely divided into an air blowing unit and an air conditioning unit. However, the scroll case of the air blowing unit and the air- .

The air conditioning case 110 has an air inlet 112 formed at an inlet side thereof and an air outlet port formed at the outlet thereof with a defrost vent 113, a face vent 114 and a floor vent 115, And each of the vents 113, 114 and 115 is communicated with each other. The air conditioner case 110 may include an upper case 110a and a lower case 110b.

The evaporator 101 and the heater core 102 are sequentially installed on the air passage of the air conditioning case 110. [ Between the evaporator 101 and the heater core 102 is provided a passage for bypassing the heater core 102 and a temperature control door 116 for regulating the opening of the passage through the heater core 102. A plurality of mode doors 113a, 114a, and 115a are provided in the vents 113, 114, and 115, respectively. The air inlet 112 of the air conditioning case 110 is provided with an air blowing unit 120 for blowing air or outside air into the air conditioning case 110.

Since the blowing unit 120 is a well-known technique, a detailed description thereof will be omitted. The blowing unit 120 is composed of an intake duct and a scroll case 155. The intake unit and the outside air inlet 122 are formed in the upper portion of the intake unit, and the lower portion is opened. Inside the intake unit, an inside / outside switching door for opening / closing the inside / outside air inlet 122 is installed. The scroll case 155 is coupled to the lower portion of the intake duct and is provided therein with a blowing fan for forcibly blowing air to the air conditioning case 110 side. The scroll case 155 is divided into an upper scroll case 156 and a lower scroll case 157 and assembled with each other.

The vehicle air conditioning system 100 according to an embodiment of the present invention includes cooling / heating pipe fixing parts 500, 600, and 800. The cooling / heating pipe fixing portions 500 (600) and 800 are installed in the case body, and fix the refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148 together.

Therefore, since it is not necessary to provide each of the fixing means for the coolant pipe and the fixing means for the cooling water pipe, the number of parts and the number of assembling steps can be reduced, and the manufacturing cost can be reduced.

8 is a front view showing a first bracket of a vehicle air conditioning system according to an embodiment of the present invention, FIG. 9 is a front view of the present invention FIG. 10 is a perspective view illustrating a state in which a first bracket of a vehicle air conditioner according to an embodiment of the present invention is coupled to a support portion, FIG. 10 11 is a front view showing a cooling / heating pipe fixing portion of the automotive air conditioner according to the embodiment of the present invention.

7 and 11, the cooling / heating pipe fixing portions 500, 600, and 800 include a support portion 500 and first and second brackets 600 and 800. The support part 500 is provided in the case body, and the first refrigerant pipe fixing grooves 501 and 502 and the first cooling water pipe fixing grooves 503 and 504 are formed. The first refrigerant pipe fixing grooves 501 and 502 and the first cooling water pipe fixing grooves 503 and 504 are each formed into a cut groove having a substantially semicircular shape.

The first and second brackets 600 and 800 are configured to be detachable from the support 500 and the second refrigerant pipe fixing grooves 601 and 602 and the second cooling water pipe fixing grooves 803 and 804 . The second refrigerant pipe fixing grooves 601 and 602 fix the refrigerant inlet / outlet pipe 147 between the first refrigerant pipe fixing grooves 501 and 502 and the second refrigerant pipe fixing grooves 803, (804) fixedly supports a cooling water inlet / outlet pipe (148) between the first cooling water pipe fixing grooves (503) and (504).

The second refrigerant pipe fixing grooves 601 and 602 and the second cooling water pipe fixing grooves 803 and 804 have a substantially semicircular groove shape. The first and second brackets 600 and 800 are coupled to the supporting part 500 so that the first and second refrigerant pipe fixing grooves 501 and 502 and the second refrigerant pipe fixing grooves 601 and 602 face each other, The first cooling water pipe fixing grooves 503 and 504 and the second cooling water pipe fixing grooves 803 and 804 are fixedly supported by the refrigerant pipe fixing hole 690, And the cooling water inlet / outlet pipe 148 is fixedly supported as the circular cooling water pipe fixing hole 890 is formed.

In this manner, leakage of refrigerant or cooling water due to vehicle vibration can be prevented through strengthening of the fixed portion strength of the refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148.

The support portion 500 is integrally formed with the case body. Since the support part 500 is formed integrally with the case body, the support part 500 can be molded together during the injection molding of the case body, so that the support part can be easily formed by slightly changing the design of the mold. As a result, separate members and processes can be omitted to form the support, which can contribute to the reduction of the manufacturing cost.

In this case, the support part 500 is formed on the front surface of the scroll case 155 in the vehicle longitudinal direction. The evaporator 101 and the heater core 102 are all installed inside the air conditioning case 110. When the supporting part 500 is disposed on the side of the air conditioning case 110, the refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148 (both of which are coupled to the side surfaces of the evaporator 101 and the heater core 102) ) Must have one or more bending intervals. That is, when the support part 500 is formed in the scroll case 155, it is possible to stably fix the refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148 while minimizing the bending section.

More specifically, the support part 500 includes an upper support part 520 having one of the first refrigerant pipe fixing grooves 501 and 502 and the first cooling water pipe fixing grooves 503 and 504 formed on the upper surface thereof, The other of the first refrigerant pipe fixing grooves 501 and 502 and the first cooling water pipe fixing grooves 503 and 504 faces the support part 520 and is formed of a lower support part 530 formed on the lower surface. In an embodiment of the present invention, the first refrigerant pipe fixing grooves 501 and 502 are formed in the upper support portion 520 and the first cooling water pipe fixing grooves 503 and 504 are formed in the lower support portion 530 do. However, the vertical position of the fixing groove can be changed.

The upper support part 520 is integrally formed with the upper scroll case 156 and the lower support part 530 is formed integrally with the lower scroll case 157. When the upper scroll case 156 and the lower scroll case 157 are fastened together, the upper support 520 and the lower support 530 are coupled to each other to form a single support 500. The clamping force between the upper support part 520 and the lower support part 530 can be enhanced through the clip 510.

The bracket includes a first bracket 600 having one of the second refrigerant pipe fixing grooves 601 and 602 and the second cooling water pipe fixing grooves 803 and 804 and a second bracket 600 having a second refrigerant pipe fixing groove 601, And a second bracket 800 having the other of the first cooling water pipe fixing grooves 602 and the second cooling water pipe fixing grooves 803 and 804 formed therein. In an embodiment of the present invention, second refrigerant pipe fixing grooves 601 and 602 are formed in the first bracket 600, second cooling water pipe fixing grooves 803 and 804 are formed in the second bracket 800, .

The first bracket 600 has a plate shape having a predetermined thickness and a plurality of assembly holes 605 are formed and screwed to the assembly hole 505 formed in the support portion 500. A support bracket 650 is formed on the first bracket 600 and supported on the upper surface of the upper support 520. The second bracket 800 has a plate shape having a predetermined thickness and a plurality of assembly holes 805 are formed and screwed to the assembly hole 505 formed in the support portion 500. A support bracket 850 is formed on the second bracket 800 and supported on the lower surface of the lower support part 530.

The refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148 are mounted on the supporting part 500 protruding from the outer surface of the case body and then the first bracket 600 and the second bracket 800 ).

That is, the first bracket 600 is screwed to the upper support 520 in a state where the refrigerant inlet / outlet pipe 147 is positioned in the first refrigerant pipe fixing grooves 501, 502 of the upper support 520, And the fixing of the refrigerant inlet / outlet pipe 147 is completed. The second bracket 800 is screwed to the lower support portion 530 in a state where the cooling water inlet and outlet pipes 148 are positioned in the first cooling water pipe fixing grooves 503 and 504 of the lower support portion 530, The fixing of the cooling water inlet / outlet pipe 148 is completed.

Therefore, the refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148 can be easily fixed at the upper and lower portions, respectively, without interference, thereby improving assembling performance.

The first and second brackets 600 and 800 support the refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148 from outside in the vehicle width direction. Accordingly, the refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148 are stably supported in the vehicle width direction and the clearance is reduced, thereby minimizing the lateral vibration due to the vehicle vibration.

The second bracket 800 formed with the second cooling water pipe fixing grooves 803 and 804 is integrally formed with a heat insulating cover 810 covering the cooling water inlet and outlet pipe 148. The heat insulating cover 810 protects the outside from the high temperature of the cooling water and is integrally formed with the second bracket 800 so that the number of components and the number of assembly processes can be further reduced.

Although the vehicle air-conditioning apparatus according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100: Vehicle air conditioner
101: evaporator 102: heater core
110: air conditioning case 112: air inlet
113: De-Frost Vents 114: Face Vents
115: Floor Vents 113a, 114a, 115a: Mode Door
116: Temperature control door 120: Air blowing unit
155: scroll case 156: upper scroll case
157: lower scroll case 147: refrigerant inlet, outlet pipe
148: cooling water inlet / outlet pipe 500: support
501, 502: first refrigerant pipe fixing grooves 503, 504: first cooling water pipe fixing groove
520: upper support portion 530: lower support portion
600: first bracket 601, 602: second refrigerant pipe fixing groove
800: second bracket 803, 804: second cooling water pipe fixing groove
810: Insulation cover

Claims (8)

An evaporator 101 and a heater core 102, which are sequentially disposed in the air flow direction on the air passage of the case body, A refrigerant inlet and outlet pipe 147 for circulating the refrigerant to the evaporator 101 and a cooling water inlet and outlet pipe 148 for circulating the cooling water to the heater core 102, And a bracket is fastened to upper and lower portions of the refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148,
And a cooling / heating pipe fixing unit installed in the case body for fixing the refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148 together. The method according to claim 1,
The case body is provided with a support part 500 having first refrigerant pipe fixing grooves 501 and 502 and first cooling water pipe fixing grooves 503 and 504 formed therein;
A first bracket 600 having second refrigerant pipe fixing grooves 601 and 602 for fixing the refrigerant inlet / outlet pipe 147,
And a second bracket (800) formed with second cooling water pipe fixing grooves (803) and (804) for fixing and supporting the cooling water inlet / outlet pipe (148). 3. The method of claim 2,
Wherein the support part (500) is integrally formed or detachable from the case body. 3. The method of claim 2,
The refrigerant inlet / outlet pipe 147 and the cooling water inlet / outlet pipe 148 are mounted on the supporting part 500 protruding from the outer surface of the case body and then the first bracket 600 and the second bracket 800 Wherein the airbag is connected to the airbag. 3. The method of claim 2,
The support portion 500 includes an upper support portion 520 having upper surfaces formed with first refrigerant pipe fixing grooves 501 and 502 and a first cooling water pipe fixing grooves 503 and 504 facing the upper support portion 520 And a lower support portion (530) formed on a lower surface of the lower support portion (530). 6. The method of claim 5,
The first bracket 600 is formed with second refrigerant pipe fixing grooves 601 and 602 facing the first refrigerant pipe fixing grooves 501 and 502 and the second cooling water pipe fixing grooves 601 and 602 are formed in the second bracket 800, And second cooling water pipe fixing grooves (803) and (804) facing the pipe fixing grooves (503) and (504) are formed. 3. The method of claim 2,
Wherein the first and second brackets (600, 800) support the refrigerant inlet / outlet pipe (147) and the cooling water inlet / outlet pipe (148) from outside in the vehicle width direction. The method according to claim 6,
And a heat insulating cover (810) covering the cooling water inlet / outlet pipe (148) is integrally formed in the second bracket (800) formed with the second cooling water pipe fixing grooves (803, 804) .

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