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KR101569478B1 - Dual type air conditioner for car - Google Patents

Dual type air conditioner for car Download PDF

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Publication number
KR101569478B1
KR101569478B1 KR1020090080170A KR20090080170A KR101569478B1 KR 101569478 B1 KR101569478 B1 KR 101569478B1 KR 1020090080170 A KR1020090080170 A KR 1020090080170A KR 20090080170 A KR20090080170 A KR 20090080170A KR 101569478 B1 KR101569478 B1 KR 101569478B1
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refrigerant
compressor
evaporator
air conditioning
heat exchanger
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KR20110022765A (en
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변상철
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한온시스템 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00942—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising a plurality of heat exchangers, e.g. for multi zone heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00949—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising additional heating/cooling sources, e.g. second evaporator

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

본 발명은 차량용 듀얼 타입 공조장치에 관한 것으로서, 후석부분의 냉방성능을 향상시킬 수 있고, 압축기로 도입되는 냉매의 온도 상승을 방지하여 냉매의 온도 상승으로 인한 압축기의 내구성 약화 및 수명의 단축 현상을 방지하는 것을 목적으로 한다.The present invention relates to a dual type air conditioner for a vehicle, which can improve the cooling performance of a rear portion and prevent a rise in the temperature of the refrigerant introduced into the compressor, thereby reducing the durability of the compressor and shortening the service life And to prevent such problems.

이러한 목적을 달성하기 위하여 본 발명은, 압축기와, 응축기와, 압축기와 응축기를 거치면서 압축 및 응축된 냉매를 도입하여 냉기를 발생시키는 증발기를 각각 포함하는 전,후석 공조유닛과, 응축기로부터 토출된 고온냉매와 압축기에 도입되는 저온냉매를 상호 열교환시키는 내부열교환기를 포함하는 차량용 듀얼 타입 공조장치에 있어서, 전석 공조유닛의 증발기에서 토출된 냉매는 내부열교환기를 통과하도록 함과 아울러, 내부열교환기를 통과한 냉매가 후석 공조유닛의 증발기에서 토출된 냉매와 혼합되어 압축기로 도입될 수 있게 하는 구조를 갖는다.In order to achieve the above object, the present invention provides an air conditioning system comprising: a front and rear air conditioning units each including a compressor, a condenser, an evaporator for introducing refrigerant compressed and condensed while passing through a compressor and a condenser, A dual type air conditioner for a vehicle, comprising: an internal heat exchanger for exchanging heat between a high temperature refrigerant and a low temperature refrigerant introduced into a compressor, wherein the refrigerant discharged from the evaporator of the electric air conditioning unit passes through an internal heat exchanger, So that the refrigerant can be mixed with the refrigerant discharged from the evaporator of the aft air conditioning unit and introduced into the compressor.

Description

차량용 듀얼 타입 공조장치{DUAL TYPE AIR CONDITIONING SYSTEM FOR AUTOMOTIVE VEHICLES}BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual type air conditioner for a vehicle,

본 발명은 차량용 듀얼 타입 공조장치에 관한 것으로서, 보다 상세하게는, 후석부분의 냉방성능을 향상시킬 수 있고, 압축기로 도입되는 냉매의 온도 상승을 방지하여 냉매의 온도 상승으로 인한 압축기의 내구성 약화 및 수명의 단축 현상을 방지할 수 있는 차량용 듀얼 타입 공조장치에 관한 것이다. The present invention relates to a dual type air conditioner for a vehicle, and more particularly, to a dual type air conditioner for a vehicle, and more particularly, to a dual type air conditioner for a vehicle which can improve the cooling performance of a rear portion and prevent the temperature rise of the refrigerant introduced into the compressor, And more particularly, to a dual type air conditioner for a vehicle that can prevent a shortening of life.

최근의 차량용 공조장치는, 차실내의 앞부분과 뒷부분을 독립적으로 냉, 난방하는 듀얼 타입으로 개발되고 있다. Background Art [0002] Recent automotive air conditioners have been developed as a dual type in which the front and rear portions of a car are independently cooled and heated.

듀얼 타입 공조장치의 일례로서, 일본 공개특허 제2000-118231호가 있다. 이 기술은, 도 1에 도시된 바와 같이, 압축기(1)와, 응축기(2) 및, 실내의 앞부분을 냉방하기 위한 주증발기(3)와, 실내의 뒷부분을 냉방하기 위한 부증발기(4)를 구비한다.As an example of the dual-type air conditioner, Japanese Laid-Open Patent Publication No. 2000-118231 is available. 1, the technique includes a compressor 1, a condenser 2, a main evaporator 3 for cooling the front part of the room, a sub evaporator 4 for cooling the rear part of the room, Respectively.

이러한 듀얼 타입 공조장치에 의하면, 압축기(1)로부터 토출된 고온·고압의 냉매가 응축기(3)를 통과하면서 저온·고압으로 응축되고, 응축된 저온·고압의 냉매가 주증발기(3)와 부증발기(4)의 상류측에 설치된 팽창밸브(3a, 4a)를 통과하면 서 저온·저압으로 팽창된다.According to this dual type air conditioner, the high temperature and high pressure refrigerant discharged from the compressor 1 is condensed at a low temperature and a high pressure while passing through the condenser 3, and the condensed low temperature and high pressure refrigerant is introduced into the main evaporator 3 The refrigerant passes through the expansion valves 3a and 4a provided on the upstream side of the evaporator 4 and is expanded to a low temperature and a low pressure.

그리고 팽창된 저온·저압의 냉매는, 주증발기(3)와 부증발기(4)를 통과하면서 기화되며, 이렇게 기화된 냉매는 주변의 열을 흡수하면서 냉기를 발생시킨다.The expanded low-temperature and low-pressure refrigerant is vaporized while passing through the main evaporator 3 and the secondary evaporator 4, and the vaporized refrigerant absorbs the surrounding heat and generates cold air.

이때, 주증발기(3)에서 발생된 냉기는 실내의 앞부분으로 공급되면서 차실내의 앞부분을 냉방한다. 그리고 부증발기(4)에서 발생된 냉기는 실내의 뒷부분으로 공급되면서 차실내의 뒷부분을 냉방한다.At this time, the cool air generated in the main evaporator 3 is supplied to the front part of the room, and the front part of the room is cooled. The cool air generated by the secondary evaporator 4 is supplied to the rear portion of the room, thereby cooling the rear portion of the room.

그런데, 이러한 종래의 공조장치는, 응축기(3)를 통과한 냉매가 주증발기(3)와 부증발기(4)로 나눠지면서 공급되므로, 증발기(3, 4)의 냉각효율이 낮아진다는 단점이 있으며, 이러한 단점 때문에 차실내의 전석, 후석 냉방성능이 저하된다는 문제점이 있다.However, such a conventional air conditioner is disadvantageous in that the cooling efficiency of the evaporators 3 and 4 is lowered because the refrigerant having passed through the condenser 3 is divided into the main evaporator 3 and the secondary evaporator 4 , And the drawbacks are that the cooling performance of all seats and seats in the passenger compartment is deteriorated.

본 발명은 상기와 같은 종래의 문제점을 해결하기 위해 안출된 것으로서, 그 목적은, 장치의 구조를 개선함으로써, 차실내의 전석, 후석 냉방성능을 최대한 향상시킬 수 있는 차량용 듀얼 타입 공조장치를 제공하는 데 있다. SUMMARY OF THE INVENTION It is an object of the present invention to provide a dual type air conditioner for a vehicle capable of maximizing the cooling performance of the passenger compartment and the rear passenger compartment by improving the structure of the apparatus There is.

이러한 목적을 달성하기 위하여, 본 발명의 차량용 듀얼 타입 공조장치는, 압축기와, 응축기와, 상기 압축기와 응축기를 거치면서 압축 및 응축된 냉매를 도입하여 냉기를 발생시키는 증발기를 각각 포함하는 전,후석 공조유닛과, 상기 응축기로부터 토출된 고온냉매와 상기 압축기에 도입되는 저온냉매를 상호 열교환시키 는 내부열교환기를 포함하는 차량용 듀얼 타입 공조장치에 있어서, 상기 전석 공조유닛의 증발기에서 토출된 냉매는 상기 내부열교환기를 통과하도록 함과 아울러, 상기 내부열교환기를 통과한 냉매가 상기 후석 공조유닛의 증발기에서 토출된 냉매와 혼합되어 상기 압축기로 도입될 수 있게 하는 구조를 갖는 것을 특징으로 한다.In order to achieve this object, a dual type air conditioner for a vehicle according to the present invention comprises a compressor, a condenser, and an evaporator for introducing a refrigerant compressed and condensed while passing through the compressor and the condenser, A dual type air conditioner for an automotive vehicle, comprising: an air conditioning unit; and an internal heat exchanger for exchanging heat between the high temperature refrigerant discharged from the condenser and the low temperature refrigerant introduced into the compressor, wherein the refrigerant discharged from the evaporator of the pre- The refrigerant passing through the heat exchanger and the refrigerant having passed through the internal heat exchanger can be mixed with the refrigerant discharged from the evaporator of the aft air conditioning unit and introduced into the compressor.

바람직하게는, 상기 응축기로부터 토출된 냉매가 상기 내부열교환기를 통과한 후, 상기 전,후석 공조유닛의 증발기로 각각 분기되어 공급되도록 하는 구조를 갖는 것을 특징으로 한다.Preferably, after the refrigerant discharged from the condenser passes through the internal heat exchanger, the refrigerant is branched and supplied to the evaporator of the front / rear airconditioning unit, respectively.

그리고 상기 내부열교환기는, 이중관 구조로서, 상기 전석 공조유닛의 증발기로부터 상기 압축기로 이송되는 냉매가 통과할 수 있는 내부유로와, 상기 응축기로부터 상기 전,후 공조유닛의 증발기로 이송되는 냉매가 통과할 수 있는 외부유로를 포함하는 것을 특징으로 한다.The internal heat exchanger has a double pipe structure including an inner flow passage through which the refrigerant conveyed from the evaporator of the electric air conditioning unit to the compressor can pass and a refrigerant conveyed from the condenser to the evaporator of the front and rear air conditioning units And an outer flow path which can be opened and closed.

본 발명에 따른 차량용 듀얼 타입 공조장치에 의하면, 내부열교환기를 이용하여 증발기로 도입되는 냉매의 온도를 낮추어주는 구조이므로, 증발기의 냉각능력을 향상시킬 수 있으며, 따라서, 전석 및 후석의 냉방성능을 향상시킬 수 있는 효과가 있다. According to the dual type air conditioner for a vehicle according to the present invention, since the temperature of the refrigerant introduced into the evaporator is lowered by using the internal heat exchanger, it is possible to improve the cooling capacity of the evaporator and thus improve the cooling performance of all seats and rear seats There is an effect that can be made.

또한, 본 발명은, 내부열교환기를 통과한 냉매를 후석 공조유닛에 공급하는 구조이므로, 내부열교환기에 의해 온도가 낮아진 냉매를 후석 공조유닛에 공급할 수 있다. 따라서, 후석 공조유닛의 냉방효율을 최대한 향상시킬 수 있는 효과가 있다.Further, the present invention is a structure that supplies the refrigerant that has passed through the internal heat exchanger to the aft air conditioning unit, so that the refrigerant whose temperature has been lowered by the internal heat exchanger can be supplied to the aft air conditioning unit. Therefore, the cooling efficiency of the rear seat air-conditioning unit can be maximized.

또한, 본 발명은, 후석 공조유닛으로부터 토출된 저온냉매를 내부열교환기를 통과시키지 않고 내부열교환기를 통과한 전석 공조유닛의 냉매와 혼합시키는 구조이므로, 전석 공조유닛의 냉매가 온도 상승된 채로 압축기에 직접 도입되는 것을 방지할 수 있으며, 이로써, 압축기로 도입되는 냉매의 온도를 낮출 수 있는 효과가 있다Further, the present invention is a structure in which the low-temperature refrigerant discharged from the rear seat air-conditioning unit is mixed with the refrigerant of the air-conditioning unit passing through the internal heat exchanger without passing through the internal heat exchanger, It is possible to reduce the temperature of the refrigerant introduced into the compressor

또한, 압축기로 도입되는 냉매의 온도를 낮출 수 있으므로, 온도 상승된 냉매의 유입으로 인한 압축기의 내구성 저하와 그로 인한 압축기의 수명 저하를 미연에 방지할 수 있는 효과가 있다. Further, since the temperature of the refrigerant introduced into the compressor can be lowered, it is possible to prevent the durability of the compressor due to the inflow of the refrigerant whose temperature has been raised and the deterioration of the service life of the compressor.

이하, 본 발명에 따른 차량용 듀얼 타입 공조장치의 바람직한 실시예를 첨부한 도면에 의거하여 상세히 설명한다(종래와 동일한 구성요소는 동일한 부호를 사용하여 설명한다). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a dual-type air conditioner for a vehicle according to the present invention will now be described in detail with reference to the accompanying drawings (the same components as those in the prior art are denoted by the same reference numerals).

도 2는 본 발명에 따른 차량용 듀얼 타입 공조장치를 나타내는 도면이다. 먼저, 본 발명에 따른 듀얼 타입 공조장치의 특징부를 살펴보기에 앞서, 도 2를 참조하여 듀얼 타입 공조장치에 대해 간략하게 살펴본다. 2 is a view showing a dual type air conditioner for a vehicle according to the present invention. First, a dual type air conditioner will be briefly described with reference to FIG. 2 before a description of the features of the dual type air conditioner according to the present invention.

차량용 듀얼 타입 공조장치는, 압축기(10)와 응축기(20)와 전석 공조유닛(30)과 후석 공조유닛(40)을 구비한다.A dual type air conditioner for a vehicle has a compressor (10), a condenser (20), an electric air conditioning unit (30) and a rear air conditioning unit (40).

압축기(10)는 기화된 냉매를 고온·고압의 가스로 압축하고, 응축기(20)는 고온,고압의 냉매를 액화시킨다. The compressor (10) compresses the vaporized refrigerant into high temperature and high pressure gas, and the condenser (20) liquefies the high temperature and high pressure refrigerant.

전석 공조유닛(30)은, 팽창밸브(32)와 증발기(34)와 상기 증발기(34)에 공기 를 송풍하는 송풍기(36)를 구비하며, 증발기(34)의 냉기를 실내의 앞부분으로 송풍한다. The air conditioning unit 30 includes an expansion valve 32 and an evaporator 34 and an air blower 36 for blowing air to the evaporator 34. The air in the evaporator 34 is blown to the front of the room .

후석 공조유닛(40)은, 응축기(20)를 통과한 냉매를 바이패스하는 바이패스 라인(42)과, 바이패스 라인(42)에 설치되는 팽창밸브(44)와 증발기(45) 및, 증발기(45)에 공기를 송풍하는 송풍기(46)를 구비한다. 이러한 후석 공조유닛(40)은 증발기(45)의 냉기를 실내의 뒷부분으로 송풍한다. The rear seat air conditioning unit 40 includes a bypass line 42 for bypassing the refrigerant that has passed through the condenser 20, an expansion valve 44 and an evaporator 45 provided in the bypass line 42, And an air blower (46) for blowing air to the air blower (45). The back air conditioning unit (40) blows the cold air of the evaporator (45) to the rear portion of the room.

그리고 듀얼 타입 공조장치는, 내부열교환기(50)를 구비한다. 내부열교환기(50)는 이중관 구조로서, 내부관(52)과 외부관(54)을 갖는다. The dual type air conditioner includes an internal heat exchanger (50). The internal heat exchanger 50 has a double pipe structure and has an inner pipe 52 and an outer pipe 54. [

내부관(52)은, 내부유로(52a)를 갖추고 있으며, 이 내부유로(52a)에는 전석 공조유닛(30)의 증발기(34)를 통과한 저온의 냉매가 도입되어 흐른다. The inner pipe 52 has an inner passage 52a into which the low temperature refrigerant having passed through the evaporator 34 of the electric vehicle air conditioning unit 30 is introduced and flows.

외부관(54)은, 내부관(42)과의 사이에 외부유로(54a)가 형성되도록 내부관(52)의 외면 둘레에 설치된다. 내부관(52)과 외부관(54) 사이의 외부유로(54a)에는 응축기(20)를 통과한 고온의 냉매가 도입되어 흐른다.The outer tube 54 is installed around the outer surface of the inner tube 52 so that the outer tube 54 is formed between the outer tube 54 and the inner tube 42. The high-temperature refrigerant that has passed through the condenser 20 flows into the external flow path 54a between the inner pipe 52 and the outer pipe 54 and flows.

이러한 내부열교환기(50)는, 외부유로(54a)를 따라 흐르는 고온의 냉매와, 내부유로(52a)를 따라 흐르는 저온 냉매를 상호 열교환시킨다. 따라서, 외부유로(54a)를 따라 흐르는 냉매의 온도를 낮추어 준다. 이로써, 응축기(20)로부터 전석 공조유닛(30)의 증발기(40)로 도입되는 냉매의 온도를 추가적으로 낮추어 준다. The internal heat exchanger 50 exchanges heat between the high-temperature refrigerant flowing along the outer flow path 54a and the low-temperature refrigerant flowing along the inner flow path 52a. Accordingly, the temperature of the refrigerant flowing along the outer flow path 54a is lowered. Thus, the temperature of the refrigerant introduced from the condenser 20 to the evaporator 40 of the electric vehicle air conditioning unit 30 is further lowered.

다음으로, 본 발명에 따른 차량용 듀얼 타입 공조장치의 특징부를 도 2를 참조하여 상세하게 살펴본다. Next, a feature of a dual type air conditioner for a vehicle according to the present invention will be described in detail with reference to FIG.

먼저, 본 발명의 듀얼 타입 공조장치는, 응축기(20)를 통과한 냉매를 후석 공조유닛(40)으로 바이패스하는 바이패스 라인(42)을 구비하되, 상기 바이패스 라인(42)이 내부열교환기(50)의 외부유로(54a) 출구측(54b)으로부터 분기되는 구성을 갖는다.The dual type air conditioner of the present invention includes a bypass line 42 for bypassing the refrigerant that has passed through the condenser 20 to the aft air conditioning unit 40, From the outlet side (54b) of the outer flow path (54a) of the flow path (50).

이렇게, 내부열교환기(50)의 외부유로(54a) 출구측(54b)으로부터 분기되는 바이패스 라인(42)은, 내부열교환기(50)를 통과한 응축기(20)의 냉매를 바이패스 하게 된다. The bypass line 42 branched from the outlet side 54b of the external flow passage 54a of the internal heat exchanger 50 bypasses the refrigerant of the condenser 20 passing through the internal heat exchanger 50. [

따라서, 내부열교환기(50)에서 열교환된 냉매가 후석 공조유닛(40)에 공급될 수 있게 한다. 이로써, 온도가 낮춰진 냉매가 후석 공조유닛(40)의 증발기(45)에 공급될 수 있게 한다. 그 결과, 후석 공조유닛(40)의 냉방효율을 향상시키며, 이에 따라, 후석부분의 냉방효과가 증진된다.Thus, refrigerant heat-exchanged in the internal heat exchanger (50) can be supplied to the aft air conditioning unit (40). Thereby, the refrigerant whose temperature has been lowered can be supplied to the evaporator 45 of the aft air conditioning unit 40. As a result, the cooling efficiency of the rear seat air-conditioning unit 40 is improved, and thus the cooling effect of the rear seat portion is enhanced.

다시, 도 2를 참조하면, 본 발명의 듀얼 타입 공조장치는, 후석 공조유닛(40)을 통과한 냉매를 압축기(10)측으로 리턴시키는 리턴라인(60)을 구비한다.Referring again to FIG. 2, the dual type air conditioner of the present invention includes a return line 60 that returns the refrigerant that has passed through the rear air conditioning unit 40 to the compressor 10 side.

리턴라인(60)은, 내부열교환기(50)의 내부유로(52a) 출구측(52b)에 직접 연결된다. 따라서, 후석 공조유닛(40)을 통과한 냉매가 내부열교환기(50)를 거치지 않게 한다. The return line 60 is directly connected to the outlet side 52b of the internal flow path 52a of the internal heat exchanger 50. [ Therefore, the refrigerant that has passed through the rear seat air-conditioning unit 40 is prevented from passing through the internal heat exchanger 50.

그 결과, 열교환되지 않은 후석 공조유닛(40)의 저온 냉매가 내부열교환기(50)의 내부유로(52a)를 통과한 냉매와 혼합될 수 있게 한다. 이로써, 내부유로(52a)를 통과하는 과정에서 온도가 상승된 냉매의 온도를 낮추어 준다.As a result, the low-temperature refrigerant of the back-side air conditioning unit (40) that has not been heat-exchanged can be mixed with the refrigerant that has passed through the internal flow path (52a) of the internal heat exchanger (50). Thus, the temperature of the refrigerant whose temperature has risen in the process of passing through the internal flow path 52a is lowered.

따라서, 압축기(10)로 도입되는 냉매의 온도를 낮추어 준다. 그 결과, 냉매의 온도 상승으로 인해 발생되는 압축기(10)의 내구성 저하현상과, 그로 인한 수명 저하현상을 미연에 방지할 수 있다. Thus, the temperature of the refrigerant introduced into the compressor 10 is lowered. As a result, the durability of the compressor 10, which is caused by the temperature rise of the refrigerant, can be prevented and the lifetime of the compressor 10 can be prevented.

이와 같은 구성의 본 발명에 의하면, 내부열교환기를 이용하여 증발기로 도입되는 냉매의 온도를 낮추어주는 구조이므로, 증발기의 냉각능력을 향상시킬 수 있으며, 따라서, 전석 및 후석의 냉방성능을 향상시킬 수 있다.According to the present invention, the cooling capacity of the evaporator can be improved and the cooling performance of the ovens and the rear seats can be improved by using the internal heat exchanger to lower the temperature of the refrigerant introduced into the evaporator. .

또한, 본 발명은, 내부열교환기(50)를 통과한 냉매를 후석 공조유닛(40)에 바이패스하는 구조이므로, 내부열교환기(50)에 의해 온도가 낮아진 냉매를 후석 공조유닛(40)의 증발기(45)에 공급할 수 있다. 따라서, 후석 공조유닛(40)의 냉방효율을 최대한 향상시키고, 이로써, 후석부분의 냉방효과가 증진된다. Since the refrigerant having passed through the internal heat exchanger 50 is bypassed to the aft air conditioning unit 40, the refrigerant whose temperature has been lowered by the internal heat exchanger 50 is supplied to the evaporator (not shown) of the aft air conditioning unit 40 45). Therefore, the cooling efficiency of the rear seat air-conditioning unit 40 is maximally improved, whereby the cooling effect of the rear seat portion is enhanced.

또한, 본 발명은, 후석 공조유닛(40)을 통과한 저온의 냉매를 내부열교환기(50)를 통과시키지 않고 압축기(10)로 직접 도입시키는 구조이므로, 압축기(10)로 도입되는 냉매의 온도를 낮출 수 있다.Further, since the present invention is a structure in which the low temperature refrigerant that has passed through the back air conditioning unit 40 is directly introduced into the compressor 10 without passing through the internal heat exchanger 50, the temperature of the refrigerant introduced into the compressor 10 Can be lowered.

따라서, 내부열교환기(50)를 통과한 전석 공조유닛(30)의 냉매가 온도 상승된 채로 압축기(10)에 직접 도입되는 것을 방지할 수 있다. 이로써, 온도 상승된 냉매의 유입 및 오일 순환성 저하로 인한 압축기(10)의 내구성 저하와 그로 인한 압축기(10)의 수명 저하현상을 미연에 방지할 수 있다.Therefore, it is possible to prevent the refrigerant of the electric ostomy unit 30 that has passed through the internal heat exchanger 50 from being introduced directly into the compressor 10 while the temperature is raised. As a result, the durability of the compressor 10 due to the inflow of the refrigerant whose temperature has been increased and the deterioration of the oil circulation can be prevented and the life of the compressor 10 due to the deterioration can be prevented in advance.

이상에서는 본 발명의 바람직한 실시예를 예시적으로 설명하였으나, 본 발명의 범위는 이와 같은 특정 실시예에만 한정되는 것은 아니며, 특허청구범위에 기재된 범주내에서 적절하게 변경 가능한 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

도 1은 종래의 차량용 듀얼 타입 공조장치를 나타내는 도면,1 is a view showing a conventional dual type air conditioner for a vehicle,

도 2는 본 발명에 따른 차량용 듀얼 타입 공조장치를 나타내는 도면이다.2 is a view showing a dual type air conditioner for a vehicle according to the present invention.

♣ 도면의 주요부분에 대한 부호의 설명 ♣DESCRIPTION OF REFERENCE NUMERALS

10: 압축기 20: 응축기10: compressor 20: condenser

30: 전석 공조유닛 32: 팽창밸브30: an all-wheel air conditioning unit 32: an expansion valve

34: 증발기 36: 송풍기34: Evaporator 36: Blower

40: 후석 공조유닛 42: 바이패스 라인(Bypass Line) 40: aft air conditioning unit 42: Bypass line

44: 팽창밸브 45: 증발기44: expansion valve 45: evaporator

46: 송풍기 50: 내부열교환기 46: blower 50: internal heat exchanger

52: 내부관 52a: 내부유로 52: inner tube 52a: inner tube

52b: 내부유로의 출구측 54: 외부관 52b: outlet side of the internal flow passage 54:

54a: 외부유로 54b: 외부유로의 출구측54a: External flow path 54b: Outlet side of the external flow path

60: 리턴라인(Return Line)60: Return Line

Claims (3)

압축기(10)와, 응축기(20)와, 상기 압축기(10)와 응축기(20)를 거치면서 압축 및 응축된 냉매를 도입하여 냉기를 발생시키는 증발기(34, 45)를 각각 포함하는 전,후석 공조유닛(30, 40)과, 상기 응축기(20)로부터 토출된 고온냉매와 상기 압축기(10)에 도입되는 저온냉매를 상호 열교환시키는 내부열교환기(50)를 포함하는 차량용 듀얼 타입 공조장치에 있어서,A refrigerator comprising a compressor (10), a condenser (20), and an evaporator (34, 45) for introducing refrigerant compressed and condensed through the compressor (10) And a heat exchanger (50) for exchanging heat between the high temperature refrigerant discharged from the condenser (20) and the low temperature refrigerant introduced into the compressor (10), the dual type air conditioner comprising: 상기 전,후석 공조유닛(30, 40)의 증발기(34, 45)에서 토출된 냉매의 일부만 상기 내부열교환기(50)를 통과할 수 있도록, 상기 전석 공조유닛(30)의 증발기(34)에서 토출된 냉매는 상기 내부열교환기(50)를 통과하도록 하고, 상기 후석 공조유닛(40)의 증발기(45)에서 토출된 냉매는 상기 내부열교환기(50)를 통과하지 않고 상기 내부열교환기(50)를 통과한 상기 전석 공조유닛(30)의 증발기(34)의 냉매와 혼합되어 상기 압축기(10)로 직접 도입될 수 있게 하는 구조를 가지며;The evaporator (34) of the electric air conditioning unit (30) discharges the refrigerant discharged from the evaporator (34, 45) of the front and rear air conditioning units (30, 40) so that only a part of the refrigerant discharged from the evaporator The refrigerant discharged from the evaporator 45 of the rear air-conditioning unit 40 passes through the internal heat exchanger 50 without passing through the internal heat exchanger 50, Has a structure to be mixed with the refrigerant of the evaporator (34) of the electric air conditioning unit (30) so as to be introduced directly into the compressor (10); 상기 응축기(20)로부터 토출된 냉매 전체가 상기 내부열교환기(50)를 통과한 후, 상기 전,후석 공조유닛(30, 40)의 증발기(34, 45)로 각각 분기되어 공급되도록 하는 구조를 갖는 것을 특징으로 하는 차량용 듀얼 타입 공조장치.The entire refrigerant discharged from the condenser 20 is branched and supplied to the evaporators 34 and 45 of the front and rear air conditioning units 30 and 40 after passing through the internal heat exchanger 50 Wherein the air conditioner is a dual type air conditioner for a vehicle. 삭제delete 제 1항에 있어서,The method according to claim 1, 상기 내부열교환기(50)는, 이중관 구조로서, 상기 전석 공조유닛(30)의 증발기(34)로부터 상기 압축기(10)로 이송되는 냉매가 통과할 수 있는 내부유로(52a)와, 상기 응축기(20)로부터 상기 전,후 공조유닛(30, 40)의 증발기(34, 45)로 이송되는 냉매가 통과할 수 있는 외부유로(54a)를 포함하는 것을 특징으로 하는 차량용 듀얼 타입 공조장치.The internal heat exchanger 50 has a double pipe structure and includes an internal passage 52a through which a refrigerant conveyed from the evaporator 34 of the electric air conditioning unit 30 to the compressor 10 can pass, And an external flow path (54a) through which the refrigerant transferred to the evaporators (34, 45) of the front and rear air conditioning units (30, 40) can pass.
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