JP6170742B2 - Air conditioner for vehicles - Google Patents
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- JP6170742B2 JP6170742B2 JP2013115218A JP2013115218A JP6170742B2 JP 6170742 B2 JP6170742 B2 JP 6170742B2 JP 2013115218 A JP2013115218 A JP 2013115218A JP 2013115218 A JP2013115218 A JP 2013115218A JP 6170742 B2 JP6170742 B2 JP 6170742B2
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Description
この発明は、自動車に搭載される車両用空調装置に関する。 The present invention relates to a vehicle air conditioner mounted on an automobile.
この明細書および特許請求の範囲において、車両用空調装置が用いられる車両の前方（図１および図４の左側）を前、同後方（図１および図４の右側）を後といい、車両の上下方向（図１および図４の上下）を上下といい、車両の左右方向（後方から前方を見た際の左右方向、図３の左右）を左右というものとする。 In this specification and claims, the front (the left side in FIGS. 1 and 4) of the vehicle in which the vehicle air conditioner is used is referred to as the front, and the rear (the right side in FIGS. 1 and 4) is referred to as the rear. The up and down direction (up and down in FIGS. 1 and 4) is referred to as up and down, and the left and right direction of the vehicle (left and right direction when looking forward from the rear, left and right in FIG. 3) is referred to as left and right.
なお、以下の説明において、全図面を通じて同一部分および同一物には同一符号を付す。 In the following description, the same parts and the same parts are denoted by the same reference symbols throughout the drawings.
従来、車両用空調装置として、図３および図４に示すように、空気導入口(1a)および空気送出口(1b)を有するとともに、内部に空気導入口(1a)と空気送出口とを通じさせる通風路(2)が形成されている合成樹脂製ケーシング(1)と、ケーシング(1)に設けられかつ通風路(2)内に送り込まれた空気の温度調節を行う温度調節部(3)と、温度調節部(3)に配置されたエバポレータ(4)と、空気導入口(1a)を通してケーシング(1)の通風路(2)内に空気を送り込むとともに、温度調節部(3)において温度調節が行われた空気を空気送出口(1b)を通して車室内に吹き出す送風機(5)とを備えており、温度調節部(3)が、ケーシング(1)内におけるエバポレータ(4)の空気流れ方向下流側に配置されたヒータコア(7)と、エバポレータ(4)を通過した後にヒータコア(7)に送られる空気量およびエバポレータ(4)を通過した後にヒータコア(7)を迂回する空気量の割合を調節するエアミックスダンパ(8)とを有している車両用空調装置が広く用いられている（たとえば特許文献１参照）。 Conventionally, as a vehicle air conditioner, as shown in FIGS. 3 and 4, the air inlet (1a) and the air outlet (1b) are provided, and the air inlet (1a) and the air outlet are passed inside. A synthetic resin casing (1) in which a ventilation path (2) is formed, and a temperature adjustment section (3) that is provided in the casing (1) and adjusts the temperature of the air sent into the ventilation path (2). In addition, air is sent into the ventilation path (2) of the casing (1) through the evaporator (4) disposed in the temperature control section (3) and the air inlet (1a), and the temperature control section (3) adjusts the temperature. And a blower (5) that blows out the air that has been discharged into the vehicle interior through the air delivery port (1b), and the temperature control unit (3) is downstream of the evaporator (4) in the air flow direction in the casing (1). Heater core (7) arranged on the side, the amount of air sent to the heater core (7) after passing through the evaporator (4) and A vehicle air conditioner having an air mix damper (8) that adjusts the ratio of the amount of air that bypasses the heater core (7) after passing through the vaporizer (4) is widely used (see, for example, Patent Document 1). ).
特許文献１記載の車両用空調装置において、ケーシング(1)の左端部におけるエバポレータ(4)よりも前側部分に空気導入口(1a)が設けられ、送風機(5)がケーシング(1)の左方でかつエバポレータ(4)よりも前側の部分に配置されるとともに、送風機(5)の空気吹き出し口(5a)が空気取導入口(1a)に通じさせられ、ケーシング(1)内の通風路(2)におけるエバポレータ(4)よりも前側部分に、空気導入口(1a)から通風路(2)内に導入された空気をエバポレータ(4)の前側部分に送る案内部分(6)が設けられている。 In the vehicle air conditioner described in Patent Document 1, an air introduction port (1a) is provided at a front portion of the left end portion of the casing (1) with respect to the evaporator (4), and the blower (5) is disposed on the left side of the casing (1). And the air blower (5a) of the blower (5) is connected to the air intake inlet (1a), and the ventilation path (in the casing (1)) ( A guide part (6) for sending the air introduced into the ventilation path (2) from the air inlet (1a) to the front part of the evaporator (4) is provided in the front part of the evaporator (4) in 2). Yes.
また、特許文献１記載の車両用空調装置において、ケーシング(1)内の通風路(2)におけるエバポレータ(4)よりも後流側に、空気加温部(9)および空気加温部(9)を迂回する迂回部(11)が設けられ、温度調節部(3)のヒータコア(7)がケーシング(1)内の通風路(2)の空気加温部(9)に配置されている。エアミックスダンパ(8)は、回転軸部(8a)と、回転軸部(8a)からエバポレータ(4)側に向けて延在しかつ回転軸部(8a)を中心として回転する遮蔽部(8b)とを有しており、エバポレータ(4)を通過したすべての空気を空気加温部(9)のヒータコア(7)に送る第１の位置（図４鎖線参照）と、エバポレータ(4)を通過したすべての空気を迂回部(11)に送ってヒータコア(7)を迂回させる第２の位置（図４実線参照）との間において遮蔽部(8b)の開度が適宜変更され、これによりヒータコア(7)を通過する空気の流量とヒータコア(7)を迂回する空気の流量との割合が調節される。 Further, in the vehicle air conditioner described in Patent Document 1, the air heating unit (9) and the air heating unit (9) are arranged downstream of the evaporator (4) in the ventilation path (2) in the casing (1). ) Is provided, and the heater core (7) of the temperature control unit (3) is disposed in the air heating unit (9) of the ventilation path (2) in the casing (1). The air mix damper (8) includes a rotating shaft portion (8a) and a shielding portion (8b) extending from the rotating shaft portion (8a) toward the evaporator (4) and rotating around the rotating shaft portion (8a). ), And a first position for sending all air that has passed through the evaporator (4) to the heater core (7) of the air heating section (9) (see the chain line in FIG. 4), and the evaporator (4) The opening of the shielding part (8b) is appropriately changed between the second position (see the solid line in FIG. 4) that sends all the air that has passed to the bypass part (11) to bypass the heater core (7). The ratio between the flow rate of air passing through the heater core (7) and the flow rate of air bypassing the heater core (7) is adjusted.
特許文献１には詳細な説明はないが、エバポレータ(4)としては、長手方向を左右方向に向けた状態で上下方向に互いに間隔をおいて配置され、かつ風下ヘッダ部(12a)(13a)および風下ヘッダ部(12a)(13a)の風上側に配置された風上ヘッダ部(12b)(13b)を有する上下１対のヘッダタンク(12)(13)と、両ヘッダタンク(12)(13)間に設けられ、かつ両端が両ヘッダタンク(12)(13)の風下ヘッダ部(12a)(13a)に通じる複数の風下側冷媒流通管部(15)および両端が両ヘッダタンク(12)(13)の風上ヘッダ部(12b)(13b)に通じる複数の風上側冷媒流通管部(16)を有する熱交換コア部(14)とを備えており、一方、ここでは上側ヘッダタンク(12)の風下ヘッダ部(12a)の一端部に冷媒入口が設けられるとともに、同じく風上ヘッダ部(12b)における冷媒入口と同一端部に冷媒出口が設けられており、冷媒入口に冷媒入口管(17)が接続されるとともに冷媒出口に出口管(18)が接続され、熱交換コア部(14)の左右方向に隣り合う冷媒流通管部(15)(16)どうしの間に前後両端が開口した通風間隙が形成されているものが広く用いられている。冷媒入口管(17)および出口管(18)は、ケーシング(1)の壁を貫通して外部に延ばされている。したがって、ケーシング(1)の通風路(2)の案内部分(6)は、空気導入口(1a)から通風路(2)内に導入された空気を、エバポレータ(4)のヘッダタンク(12)(13)の長手方向の片側でかつ冷媒流通管部(24)(25)の長手方向と直交する方向から熱交換コア部(14)の前側に送るようになっている。 Although there is no detailed description in Patent Document 1, the evaporator (4) is arranged with a space in the vertical direction with the longitudinal direction facing the left-right direction, and the leeward header portions (12a) (13a). And a pair of upper and lower header tanks (12) (13) having an upwind header section (12b) (13b) arranged on the leeward side of the leeward header sections (12a) (13a), and both header tanks (12) ( 13) a plurality of leeward refrigerant circulation pipes (15) provided at both ends and communicating with the leeward header portions (12a) (13a) of both header tanks (12) (13) and both header tanks (12 ) (13) and a heat exchange core section (14) having a plurality of upwind refrigerant flow pipe sections (16) communicating with the upwind header sections (12b) (13b), on the other hand, here the upper header tank A refrigerant inlet is provided at one end of the leeward header portion (12a) of (12), and a refrigerant outlet is also provided at the same end as the refrigerant inlet in the upwind header portion (12b). A refrigerant inlet pipe (17) is connected to the outlet and an outlet pipe (18) is connected to the refrigerant outlet, and the refrigerant flow pipe parts (15) (16) adjacent to each other in the left-right direction of the heat exchange core part (14) are connected. The thing in which the ventilation gap which the front and rear both ends opened between is formed is used widely. The refrigerant inlet pipe (17) and the outlet pipe (18) extend through the wall of the casing (1) to the outside. Therefore, the guide part (6) of the ventilation path (2) of the casing (1) is used to convert the air introduced into the ventilation path (2) from the air inlet (1a) into the header tank (12) of the evaporator (4). The refrigerant is sent from one side in the longitudinal direction of (13) to the front side of the heat exchange core portion (14) from a direction orthogonal to the longitudinal direction of the refrigerant flow pipe portions (24) and (25).
ところで、最近では、自動車の車室内の空間を確保する目的で、車両用空調装置の小型化が求められている。しかしながら、特許文献１記載の車両用空調装置においては、エアミックスダンパ(8)の遮蔽部(8b)とエバポレータ(4)の熱交換コア部(14)との干渉を避けるためには、ケーシング(1)の前後両端間の距離ｄを大きくする必要があり、車両用空調装置の小型化を図ることが困難である。 Recently, there has been a demand for miniaturization of a vehicle air conditioner for the purpose of securing a space in a vehicle cabin. However, in the vehicle air conditioner described in Patent Document 1, in order to avoid interference between the shielding part (8b) of the air mix damper (8) and the heat exchange core part (14) of the evaporator (4), the casing ( It is necessary to increase the distance d between the front and rear ends of 1), and it is difficult to reduce the size of the vehicle air conditioner.
特許文献１記載のケーシング(1)の前後両端間の距離ｄを小さくして車両用空調装置の小型化を図るためには、エアミックスダンパ(8)の回転軸部(8a)から遮蔽部(8b)先端までの長さL1を短くすることや、通風路(2)の案内部分(6)の前後方向の幅を小さくすることが有効であるが、前者の場合、空気加温部(9)および迂回部(11)の上流側端部の開口面積を小さくしなければならず、空気加温部(9)および迂回部(11)を空気が流れる際の空気側通路抵抗が大きくなり、後者の場合、案内部分(6)を空気が流れる際の空気側通路抵抗が大きくなるという問題がある。 In order to reduce the distance d between the front and rear ends of the casing (1) described in Patent Document 1 and to reduce the size of the vehicle air conditioner, the shielding unit (8a) is separated from the rotating shaft (8a) of the air mix damper (8). 8b) It is effective to shorten the length L1 to the tip or to reduce the width in the front-rear direction of the guide portion (6) of the ventilation path (2), but in the former case, the air heating section (9 ) And the opening area of the upstream end portion of the detour portion (11) must be reduced, and the air side passage resistance when air flows through the air heating portion (9) and the detour portion (11) is increased, In the latter case, there is a problem that the air-side passage resistance when air flows through the guide portion (6) increases.
さらに、特許文献１記載のケーシング(1)の前後両端間の距離ｄを小さくして車両用空調装置の小型化を図るためには、エバポレータ(4)のヘッダタンク(12)(13)および熱交換コア部(14)の前後方向の幅を小さくすることも有効であるが、この場合、ヘッダタンク(12)(13)の風下ヘッダ部(12a)(13a)および風上ヘッダ部(12b)(13b)の横断面積が小さくなるとともに、熱交換コア部(14)の冷媒流通管部(15)(16)の通路横断面積が小さくなり、冷媒側通路抵抗が大きくなって性能が低下する。 Furthermore, in order to reduce the distance d between the front and rear ends of the casing (1) described in Patent Document 1 and to reduce the size of the vehicle air conditioner, the header tanks (12) and (13) of the evaporator (4) and the heat It is also effective to reduce the width in the front-rear direction of the replacement core part (14), but in this case, the leeward header parts (12a) (13a) and the upwind header part (12b) of the header tanks (12) (13) As the cross-sectional area of (13b) becomes smaller, the cross-sectional area of the refrigerant flow pipe parts (15) and (16) of the heat exchange core part (14) becomes smaller, the refrigerant-side passage resistance becomes larger, and the performance deteriorates.
この発明の目的は、上記問題を解決し、前後方向の寸法を低減して小型化を図りうる車両用空調装置を提供することにある。 An object of the present invention is to provide a vehicle air conditioner that solves the above problems and that can be reduced in size by reducing the size in the front-rear direction.
本発明は、上記目的を達成するために以下の態様からなる。 In order to achieve the above object, the present invention comprises the following aspects.
1)空気導入口および空気送出口を有するとともに、内部に空気導入口と空気送出口とを通じさせる通風路が形成されているケーシングと、ケーシングに設けられかつ通風路内に送り込まれた空気の温度調節を行う温度調節部と、温度調節部に配置されたエバポレータと、空気導入口を通してケーシングの通風路内に空気を送り込むとともに、温度調節部において温度調節が行われた空気を空気送出口を通して車室内に吹き出す送風機とを備えており、ケーシングの通風路が、空気導入口から通風路内に導入された空気を、エバポレータのヘッダタンクの長手方向の片側でかつ冷媒流通管部の長手方向と直交する方向から熱交換コア部の前側に送る案内部分を有し、ケーシング内の通風路におけるエバポレータよりも後側に、空気加温部および空気加温部を迂回する迂回部が設けられ、温度調節部が、ケーシング内の通風路の空気加温部に配置されたヒータコアと、エバポレータを通過した後にヒータコアに送られる空気量およびエバポレータを通過した後にヒータコアを迂回する空気量の割合を調節するエアミックスダンパとを備えており、
温度調節部のエバポレータが、長手方向を同方向に向けた状態で互いに間隔をおいて配置され、かつ風下ヘッダ部および風下ヘッダ部の風上側に配置された風上ヘッダ部を有する１対のヘッダタンクと、当該１対のヘッダタンク間に設けられ、かつ両端が両ヘッダタンクの風下ヘッダ部に通じる複数の風下側冷媒流通管部および両端が両ヘッダタンクの風上ヘッダ部に通じる複数の風上側冷媒流通管部を有する熱交換コア部とを備えており、一方のヘッダタンクの風下ヘッダ部に冷媒入口が設けられるとともに、同じく風上ヘッダ部に冷媒出口が設けられており、冷媒入口に冷媒入口管が接続されるとともに冷媒出口に冷媒出口管が接続され、熱交換コア部の隣り合う冷媒流通管部どうしの間に通風方向両端が開口した通風間隙が形成され、風下側冷媒流通管部および風上側冷媒流通管部が長手方向を上下方向に向けるとともに幅方向を前後方向に向けた扁平状である車両用空調装置であって、
エバポレータの風下側冷媒流通管部の前後方向の中心が、両ヘッダタンクの風下ヘッダ部および冷媒入口管の前後方向の中心よりも前方に偏っており、風上側冷媒流通管の前後方向の中心が、両ヘッダタンクの風上ヘッダ部および冷媒出口管の前後方向の中心よりも後方に偏っており、熱交換コア部の通風方向の幅が、冷媒出口管の外径の２倍の寸法よりも小さく、ヘッダタンクの通風方向の幅が、冷媒出口管の外径の２倍の寸法よりも大きく、ヘッダタンクの風下ヘッダ部および風上ヘッダ部の内部横断面積が、それぞれ冷媒出口管の内部横断面積以上の大きさとなっている車両用空調装置。
1) A casing having an air inlet and an air outlet and having an air passage formed through the air inlet and the air outlet, and a temperature of air provided in the casing and fed into the air passage Air is sent into the ventilation path of the casing through the temperature adjusting unit for adjusting, the evaporator arranged in the temperature adjusting unit, and the air inlet, and the air whose temperature is adjusted in the temperature adjusting unit is passed through the air outlet. A blower that blows out into the room, and the ventilation path of the casing allows the air introduced into the ventilation path from the air introduction port to be on one side of the longitudinal direction of the header tank of the evaporator and orthogonal to the longitudinal direction of the refrigerant flow pipe section. A guide part to be sent from the direction to the front side of the heat exchange core part, and on the rear side of the evaporator in the ventilation path in the casing, the air heating part and A bypass unit is provided to bypass the air heating unit, and the temperature control unit passes through the heater core disposed in the air heating unit of the ventilation path in the casing, the amount of air sent to the heater core after passing through the evaporator, and the evaporator And an air mix damper that adjusts the ratio of the amount of air that bypasses the heater core.
A pair of headers in which the evaporator of the temperature control unit has a windward header portion disposed on the leeward header portion and the leeward header portion on the leeward header portion , with the longitudinal direction being directed in the same direction and spaced apart from each other A plurality of leeward refrigerant flow pipes provided between the tank and the pair of header tanks, both ends of which communicate with the leeward headers of both header tanks, and a plurality of winds of which both ends communicate with the leeward headers of both header tanks. A heat exchange core portion having an upper refrigerant flow pipe portion, a refrigerant inlet is provided in the leeward header portion of one header tank, and a refrigerant outlet is also provided in the upwind header portion. refrigerant outlet pipe is connected to the refrigerant outlet together with the refrigerant inlet pipe is connected, ventilation gap ventilating direction opposite open ends between the refrigerant flow tube portions to each other adjacent the heat exchange core portion is formed, Lower refrigerant flow tube portion and the windward side refrigerant flow tube portions is a vehicle air-conditioning system has a flat shape oriented in the longitudinal direction in the width direction with directing the longitudinal direction in the vertical direction,
The center in the front-rear direction of the leeward refrigerant flow pipe part of the evaporator is biased forward from the center in the front-rear direction of the leeward header part and the refrigerant inlet pipe of both header tanks, and the center in the front-rear direction of the windward refrigerant flow pipe is The upstream header portions of both header tanks and the center of the refrigerant outlet pipe are biased rearward, and the width of the heat exchange core portion in the ventilation direction is more than twice the outer diameter of the refrigerant outlet pipe. Small, the width of the header tank in the ventilation direction is larger than twice the outer diameter of the refrigerant outlet pipe, and the internal cross-sectional areas of the leeward header part and the windward header part of the header tank respectively cross the refrigerant outlet pipe. A vehicle air conditioner that is larger than the area.
2)エバポレータの熱交換コア部の通風方向の幅が２８ｍｍ以下である上記1)記載の車両用空調装置。 2) The vehicle air conditioner according to 1) above, wherein the width of the heat exchange core portion of the evaporator in the ventilation direction is 28 mm or less.
3)エバポレータのヘッダタンクの通風方向の幅が３２ｍｍ以上である上記1)または2)記載の車両用空調装置。 3) The vehicle air conditioner according to 1) or 2) above, wherein the width of the evaporator header tank in the ventilation direction is 32 mm or more.
4)エバポレータが、ヘッダタンクの長手方向を左右方向に向けるとともに冷媒流通管部を上下方向に向けた状態でケーシング内に配置され、ケーシング内の通風路の案内部分が、空気導入口から通風路内に導入された空気を左右いずれか一方から熱交換コア部の前側に送るようになっている上記1)〜3)のうちのいずれかに記載の車両用空調装置。 4) Eve porator is disposed in the casing in a state with its refrigerant flow tube portion in the vertical direction with directing the longitudinal direction in the lateral direction of the header tanks, the guide portion of the air passage in the casing, the ventilation from the air inlet air-conditioning system according to any one of the above 1) to 3) arranged to send to the front side of the heat exchange core air introduced into the road right from either.
上記1)〜4)の車両用空調装置によれば、エバポレータの風下側冷媒流通管部の前後方向の中心が、両ヘッダタンクの風下ヘッダ部および冷媒入口管の前後方向の中心よりも前方に偏っており、風上側冷媒流通管の前後方向の中心が、両ヘッダタンクの風上ヘッダ部および冷媒出口管の前後方向の中心よりも後方に偏っており、熱交換コア部の通風方向の幅が、冷媒出口管の外径の２倍の寸法よりも小さいので、特許文献１記載の車両用空調装置に用いた場合、エアミックスダンパの回転軸部から遮蔽部先端までの長さを短くすることなく、エアミックスダンパの遮蔽部とエバポレータの熱交換コア部との干渉を避けることができ、その結果空気加温部および迂回部の上流側端部の開口面積を、特許文献１記載の車両用空調装置に比べて大きくすることが可能になる。しかも、ケーシングの通風路における案内部分の前後方向の幅を小さくすることなく、ケーシングの前後両端間の距離を特許文献１記載の車両用空調装置に比べて、小さくすることが可能になる。したがって、ケーシングの通風路の空気加温部および迂回部を空気が流れる際の空気側通路抵抗、および通風路の案内部分を空気が流れる際の空気側通路抵抗の増大を抑制した上で、ケーシングの前後両端間の距離を小さくして車両用空調装置の小型化を図ることが可能になる。 According to the vehicle air conditioners of 1) to 4) above, the center in the front-rear direction of the leeward refrigerant circulation pipe part of the evaporator is ahead of the center in the front-rear direction of the leeward header part of both header tanks and the refrigerant inlet pipe. The center of the upwind refrigerant flow pipe in the front-rear direction is biased to the rear of the upwind header part of both header tanks and the center of the refrigerant outlet pipe in the front-rear direction, and the width of the heat exchange core part in the ventilation direction Is smaller than twice the outer diameter of the refrigerant outlet pipe, so when used in the vehicle air conditioner described in Patent Document 1, the length from the rotating shaft portion of the air mix damper to the tip of the shielding portion is shortened. Without interference between the shielding portion of the air mix damper and the heat exchange core portion of the evaporator, and as a result, the opening area of the upstream side end portion of the air heating portion and the detour portion can be reduced according to the vehicle described in Patent Document 1. Larger than air conditioning equipment Rukoto becomes possible. Moreover, the distance between the front and rear ends of the casing can be made smaller than the vehicle air conditioner described in Patent Document 1 without reducing the width in the front-rear direction of the guide portion in the ventilation path of the casing. Therefore, after suppressing the increase of the air side passage resistance when air flows through the air heating portion and the bypass portion of the ventilation path of the casing, and the air side passage resistance when air flows through the guide portion of the ventilation path, The distance between the front and rear ends of the vehicle can be reduced to reduce the size of the vehicle air conditioner.
さらに、上記1)〜4)の車両用空調装置によれば、ヘッダタンクの通風方向の幅が、出口管の外径の２倍の寸法よりも大きく、ヘッダタンクの風下ヘッダ部および風上ヘッダ部の内部横断面積が、それぞれ出口管の内部横断面積以上となっているので、ヘッダタンクの風下ヘッダ部および風上ヘッダ部の横断面積の減少を抑制することが可能になり、冷媒側通路抵抗の増大を最小限に抑えることができる。 Furthermore, according to the vehicle air conditioners of 1) to 4) above, the width of the header tank in the ventilation direction is larger than twice the outer diameter of the outlet pipe, and the leeward header portion and the windward header of the header tank Since the internal cross-sectional area of each section is equal to or greater than the internal cross-sectional area of the outlet pipe, it is possible to suppress a decrease in the cross-sectional area of the leeward header section and the upwind header section of the header tank, and the refrigerant side passage resistance Can be minimized.
上記2)の車両用空調装置によれば、ケーシングの通風路の空気加温部および迂回部を空気が流れる際の空気側通路抵抗、および通風路の案内部分を空気が流れる際の空気側通路抵抗の増大を効果的に抑制した上で、ケーシングの前後両端間の距離を小さくして車両用空調装置の小型化を図ることが可能になる。 According to the vehicle air conditioner of 2) above, the air-side passage resistance when air flows through the air heating portion and the bypass portion of the ventilation passage of the casing, and the air-side passage when air flows through the guide portion of the ventilation passage While effectively suppressing the increase in resistance, the distance between the front and rear ends of the casing can be reduced to reduce the size of the vehicle air conditioner.
上記3)の車両用空調装置によれば、ヘッダタンクの風下ヘッダ部および風上ヘッダ部の横断面積の減少を効果的に抑制することが可能になり、冷媒側通路抵抗の増大を最小限に抑えることができる。 According to the vehicle air conditioner of 3) above, it is possible to effectively suppress a reduction in the cross-sectional area of the leeward header portion and the leeward header portion of the header tank, minimizing an increase in refrigerant side passage resistance. Can be suppressed.
上記4)の車両用空調装置によれば、エアミックスダンパの回転軸部から遮蔽部先端までの寸法を短くしたり、通風路の案内部分の前後方向の幅を小さくしたりすることなく、ケーシングの前後両端間の距離を小さくすることが可能になる。したがって、ケーシングの通風路の空気加温部および迂回部を空気が流れる際の空気側通路抵抗、および通風路の案内部分を空気が流れる際の空気側通路抵抗の増大を抑制した上で、ケーシングの前後両端間の距離を小さくして車両用空調装置の小型化を図ることが可能になる。 According to the vehicle air conditioner of 4) above, the casing can be formed without shortening the dimension from the rotating shaft portion of the air mix damper to the front end of the shielding portion or reducing the width in the front-rear direction of the guide portion of the ventilation path. It becomes possible to reduce the distance between the front and rear ends. Therefore, after suppressing the increase of the air side passage resistance when air flows through the air heating portion and the bypass portion of the ventilation path of the casing, and the air side passage resistance when air flows through the guide portion of the ventilation path, The distance between the front and rear ends of the vehicle can be reduced to reduce the size of the vehicle air conditioner.
しかも、エバポレータのヘッダタンクにおける風下ヘッダ部および風上ヘッダ部の横断面積の減少を抑制することが可能になり、冷媒側通路抵抗の増大を最小限に抑えることができる。 In addition, it is possible to suppress a decrease in the cross-sectional area of the leeward header portion and the leeward header portion in the header tank of the evaporator, and the increase in the refrigerant side passage resistance can be minimized.
以下、この発明の実施形態を、図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
なお、以下の説明において、「アルミニウム」という用語には、純アルミニウムの他にアルミニウム合金を含むものとする。 In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.
図１はこの発明によるエバポレータを用いた車両用空調装置の全体構成を概略的に示す。また、図２は図１の車両用空調装置に用いられるエバポレータの要部の構成を示す。 FIG. 1 schematically shows the overall configuration of a vehicle air conditioner using an evaporator according to the present invention. FIG. 2 shows the structure of the main part of the evaporator used in the vehicle air conditioner of FIG.
図１において、車両用空調装置の構成は、ケーシング(1)の通風路(2)に配置されるエバポレータ(20)および一部の寸法を除いては、図３および図４に示す車両用空調装置の構成と同じである。なお、この発明によるエバポレータ(20)を用いた車両用空調装置を概略的に示す水平断面図は図示していないが、図３と同じである。 In FIG. 1, the configuration of the vehicle air conditioner is the same as that of the vehicle air conditioner shown in FIGS. 3 and 4, except for the evaporator (20) disposed in the ventilation path (2) of the casing (1) and some dimensions. The configuration of the apparatus is the same. A horizontal sectional view schematically showing a vehicle air conditioner using the evaporator (20) according to the present invention is not shown, but is the same as FIG.
エバポレータ(20)は、長手方向を左右方向に向けた状態で上下方向に互いに間隔をおいて配置され、かつ風下ヘッダ部(21a)(22a)および風下ヘッダ部(21a)(22a)の風上側に配置された風上ヘッダ部(21b)(22b)を有する上下１対のアルミニウム製ヘッダタンク(21)(22)と、両ヘッダタンク(21)(22)間に設けられた熱交換コア部(23)とを備えている。 The evaporator (20) is spaced apart from each other in the vertical direction with the longitudinal direction facing the left-right direction, and the windward side of the leeward header portions (21a) (22a) and the leeward header portions (21a) (22a) A pair of upper and lower aluminum header tanks (21), (22) having an upwind header section (21b, 22b) disposed in the heat exchanger core section provided between the header tanks (21, 22) (23).
上側ヘッダタンク(21)の風下ヘッダ部(21a)の一端に冷媒入口（図示略）が設けられるとともに、同じく風上ヘッダ部(21b)における冷媒入口と同一端部に冷媒出口（図示略）が設けられており、冷媒入口に冷媒入口管(17)が接続されるとともに冷媒出口に冷媒出口管(18)が接続されている。 A refrigerant inlet (not shown) is provided at one end of the lee header portion (21a) of the upper header tank (21), and a refrigerant outlet (not shown) is provided at the same end as the refrigerant inlet in the upwind header portion (21b). The refrigerant inlet pipe (17) is connected to the refrigerant inlet, and the refrigerant outlet pipe (18) is connected to the refrigerant outlet.
熱交換コア部(23)は、幅方向を前後方向に向けるとともに長手方向を上下方向に向けた状態で左右方向に間隔をおいて配置され、かつ上下両端が両ヘッダタンク(21)(22)の風下ヘッダ部(21a)(22a)に通じる複数の扁平状アルミニウム製風下側冷媒流通管部(24)と、幅方向を前後方向に向けるとともに長手方向を上下方向に向けた状態で左右方向に間隔をおいて配置され、かつ上下両端が両ヘッダタンク(21)(22)の風上ヘッダ部(21b)(22b)に通じる複数の扁平状アルミニウム製風上側冷媒流通管部(25)とを有しており、左右方向に隣り合う冷媒流通管部(24)(25)どうしの間に通風間隙(26)が形成されている。図示は省略したが、各通風間隙(26)に、風下側冷媒流通管部(24)および風上側冷媒流通管部(25)にまたがるようにアルミニウム製コルゲートフィンが配置されている。 The heat exchange core part (23) is arranged with a space in the left-right direction with the width direction facing in the front-rear direction and the longitudinal direction facing in the up-down direction, and the upper and lower ends are both header tanks (21) (22) A plurality of flat aluminum leeward refrigerant flow pipe portions (24) communicating with the leeward header portions (21a) and (22a) of the leeward header portions (21a) and (22a) in the left-right direction with the width direction facing the front-rear direction and the longitudinal direction facing the up-down direction A plurality of flat aluminum upwind refrigerant flow pipe sections (25) which are arranged at intervals and whose upper and lower ends communicate with the upwind header sections (21b) and (22b) of both header tanks (21) and (22). A ventilation gap (26) is formed between the refrigerant flow pipe portions (24) and (25) adjacent to each other in the left-right direction. Although not shown, aluminum corrugated fins are arranged in each ventilation gap (26) so as to straddle the leeward refrigerant circulation pipe part (24) and the windward refrigerant circulation pipe part (25).
エバポレータ(20)の風下側冷媒流通管部(24)の前後方向の中心が、両ヘッダタンク(21)(22)の風下ヘッダ部(21a)(22a)および冷媒入口管(17)の前後方向の中心よりも前方に偏っており、風上側冷媒流通管(25)の前後方向の中心が、両ヘッダタンク(21)(22)の風上ヘッダ部(21b)(22b)および冷媒出口管(18)の前後方向の中心よりも後方に偏っている。熱交換コア部(23)の通風方向の幅Ｂは、出口管(18)の外径Ａの２倍の寸法よりも小さく、ヘッダタンク(21)(22)の通風方向の幅Ｃは、出口管(18)の外径Ａの２倍の寸法よりも大きくなっている。また、風下ヘッダ部(21a)(22a)および風上ヘッダ部(21b)(22b)の内部横断面積は、相互に等しくなっているとともに、出口管(18)の内部横断面積以上の大きさとなっている。熱交換コア部(23)の通風方向の幅Ｂは２８ｍｍ以下であることが好ましい。また、ヘッダタンク(21)(22)の通風方向の幅は３２ｍｍ以上であることが好ましい。すなわち、出口管(18)の外径をＡｍｍ、出口管(18)の肉厚をｔｍｍ、熱交換コア部(23)の通風方向の幅をＢｍｍ、ヘッダタンク(21)(22)の通風方向の幅をＣｍｍ、風下ヘッダ部(21a)(22a)および風上ヘッダ部(21b)(22b)の内部横断面積をＤｍｍ2とした場合、２Ａ＞Ｂ、Ｃ＞２Ａ、Ｄ＞｛（Ａ−２ｔ）／２｝2×π、Ｂ≦２８ｍｍ、Ｃ≧３２ｍｍである。 The longitudinal center of the leeward refrigerant flow pipe part (24) of the evaporator (20) is the longitudinal direction of the leeward header parts (21a) (22a) and the refrigerant inlet pipe (17) of both header tanks (21) (22). The center of the windward side refrigerant distribution pipe (25) in the front-rear direction is the windward header portions (21b) (22b) and the refrigerant outlet pipes of the header tanks (21) (22). It is biased to the rear than the center of 18). The width B in the ventilation direction of the heat exchange core section (23) is smaller than twice the outer diameter A of the outlet pipe (18), and the width C in the ventilation direction of the header tanks (21) and (22) is It is larger than twice the outer diameter A of the pipe (18). In addition, the internal cross-sectional areas of the leeward header portions (21a) (22a) and the leeward header portions (21b) (22b) are equal to each other and larger than the internal cross-sectional area of the outlet pipe (18). ing. The width B in the ventilation direction of the heat exchange core portion (23) is preferably 28 mm or less. Moreover, it is preferable that the width | variety of the ventilation direction of a header tank (21) (22) is 32 mm or more. That is, the outer diameter of the outlet pipe (18) is Amm, the thickness of the outlet pipe (18) is tmm, the width in the ventilation direction of the heat exchange core (23) is Bmm, and the ventilation direction of the header tanks (21) and (22) Cmm width of, if leeward header portion inside cross-sectional area of (21a) (22a) and the windward header section (21b) (22b) was Dmm 2, 2A> B, C > 2A, D> {(A- 2t) / 2} 2 × π, B ≦ 28 mm, and C ≧ 32 mm.
上述した条件を満たすことによって、車両用空調装置のエアミックスダンパ(8)における回転軸部(8a)から遮蔽部(8b)先端までの長さＬを短くすることなく、エアミックスダンパ(8)の遮蔽部(8b)とエバポレータ(20)の熱交換コア部(23)との干渉を避けることができ、ケーシング(1)の通風路の空気加温部(9)および迂回部(11)を空気が流れる際の空気側通路抵抗の増大を抑制することができる。しかも、ケーシング(1)の通風路(2)における案内部分(6)の前後方向の幅を小さくすることなく、ケーシング(1)の前後両端間の距離Ｄを小さくすることが可能になる。したがって、ケーシング(1)の通風路(2)の空気加温部(9)および迂回部(11)を空気が流れる際の空気側通路抵抗、および通風路(2)の案内部分(6)を空気が流れる際の空気側通路抵抗の増大を抑制した上で、ケーシング(1)の前後両端間の距離Ｄを小さくして車両用空調装置の小型化を図ることが可能になる。しかも、ヘッダタンク(21)(22)の風下ヘッダ部(21a)(22a)および風上ヘッダ部(21b)(22b)の横断面積の減少を抑制することが可能になり、冷媒側通路抵抗の増大を最小限に抑えることができる。 By satisfying the above-described conditions, the air mix damper (8) can be used without shortening the length L from the rotating shaft (8a) to the tip of the shielding part (8b) in the air mix damper (8) of the vehicle air conditioner. Between the heat shield core (23) of the evaporator (20) and the heat exchange core (23) of the evaporator (20), and the air heating part (9) and bypass part (11) of the ventilation path of the casing (1) An increase in air side passage resistance when air flows can be suppressed. Moreover, the distance D between the front and rear ends of the casing (1) can be reduced without reducing the width in the front-rear direction of the guide portion (6) in the ventilation path (2) of the casing (1). Therefore, the air-side passage resistance when air flows through the air heating section (9) and the bypass section (11) of the ventilation path (2) of the casing (1) and the guide portion (6) of the ventilation path (2) It is possible to reduce the distance D between the front and rear ends of the casing (1) and to reduce the size of the vehicle air conditioner while suppressing an increase in air-side passage resistance when air flows. In addition, it is possible to suppress a reduction in the cross-sectional area of the leeward header portions (21a) (22a) and the leeward header portions (21b) (22b) of the header tanks (21) and (22). The increase can be minimized.
車両用空調装置の稼働時には、圧縮機、コンデンサおよび膨張弁を通過した冷媒が、エバポレータ(20)の冷媒入口から流入するとともにすべての冷媒流通管部(24)(25)内を流れて冷媒出口から流出する。一方、送風機(5)により空気導入口(1a)を通してケーシング(1)の通風路(2)内に送り込まれた空気が、案内部分(6)を経てエバポレータ(20)の前側に送られ、エバポレータ(20)の熱交換コア部(23)の通風間隙(26)を前端から後端に通過する。そして、エバポレータ(20)の風下側冷媒流通管部(24)内および風上側冷媒流通管部(25)内を流れる冷媒と、熱交換コア部(23)の通風間隙(26)を通過する空気とが熱交換をして空気は冷却され、冷媒は気相となって流出する。 During operation of the vehicle air conditioner, the refrigerant that has passed through the compressor, the condenser, and the expansion valve flows in from the refrigerant inlet of the evaporator (20) and flows through all the refrigerant flow pipe sections (24) and (25) to exit the refrigerant. Spill from. On the other hand, the air sent into the ventilation path (2) of the casing (1) through the air inlet (1a) by the blower (5) is sent to the front side of the evaporator (20) through the guide portion (6), and the evaporator It passes through the ventilation gap (26) of the heat exchange core part (23) of (20) from the front end to the rear end. The refrigerant flowing in the leeward refrigerant circulation pipe (24) and the windward refrigerant circulation pipe (25) of the evaporator (20) and the air passing through the ventilation gap (26) of the heat exchange core (23) Exchanges heat, the air is cooled, and the refrigerant flows out as a gas phase.
冷却された空気は、空気加温部(9)および迂回部(11)のうちの少なくともいずれか一方を通るとともに、エアミックスダンパ(8)によりヒータコア(7)を通過する空気の流量とヒータコア(7)を迂回する空気の流量との割合が調節されることによって温度が調節され、温度が調節された空気が空気送出口(1b)から車室内に吹き出される。 The cooled air passes through at least one of the air heating unit (9) and the detour unit (11), and the flow rate of air passing through the heater core (7) by the air mix damper (8) and the heater core ( The temperature is adjusted by adjusting the ratio with the flow rate of air that bypasses 7), and the air whose temperature has been adjusted is blown into the vehicle interior from the air outlet (1b).
この発明によるエバポレータを用いた車両用空調装置は、車室内への吹き出し空気の温度調整機能が優れたエアミックス方式の車両用空調装置として好適に用いられる。 The vehicle air conditioner using the evaporator according to the present invention is suitably used as an air mix type vehicle air conditioner having an excellent function of adjusting the temperature of air blown into the passenger compartment.
(1)：ケーシング
(1a)：空気導入口
(2)：通風路
(3)：温度調節部
(5)：送風機
(6)：案内部分
(7)：ヒータコア
(8)：エアミックスダンパ
(9)：空気加温部
(11)：迂回部
(20)：エバポレータ
(21)(22)：ヘッダタンク
(21a)(22a)：風下ヘッダ部
(21b)(22b)：風上ヘッダ部
(23)：熱交換コア部
(24)：風下側冷媒流通管部
(25)：風上側冷媒流通管部
(26)：通風間隙
(1): Casing
(1a): Air inlet
(2): Ventilation path
(3): Temperature control unit
(5): Blower
(6): Guidance part
(7): Heater core
(8): Air mix damper
(9): Air heating unit
(11): Detour section
(20): Evaporator
(21) (22): Header tank
(21a) (22a): leeward header
(21b) (22b): Upwind header
(23): Heat exchange core
(24): Downstream refrigerant distribution pipe
(25): Upwind refrigerant distribution pipe
(26): Ventilation gap
Claims (4)
温度調節部のエバポレータが、長手方向を同方向に向けた状態で互いに間隔をおいて配置され、かつ風下ヘッダ部および風下ヘッダ部の風上側に配置された風上ヘッダ部を有する１対のヘッダタンクと、当該１対のヘッダタンク間に設けられ、かつ両端が両ヘッダタンクの風下ヘッダ部に通じる複数の風下側冷媒流通管部および両端が両ヘッダタンクの風上ヘッダ部に通じる複数の風上側冷媒流通管部を有する熱交換コア部とを備えており、一方のヘッダタンクの風下ヘッダ部に冷媒入口が設けられるとともに、同じく風上ヘッダ部に冷媒出口が設けられており、冷媒入口に冷媒入口管が接続されるとともに冷媒出口に冷媒出口管が接続され、熱交換コア部の隣り合う冷媒流通管部どうしの間に通風方向両端が開口した通風間隙が形成され、風下側冷媒流通管部および風上側冷媒流通管部が長手方向を上下方向に向けるとともに幅方向を前後方向に向けた扁平状である車両用空調装置であって、
エバポレータの風下側冷媒流通管部の前後方向の中心が、両ヘッダタンクの風下ヘッダ部および冷媒入口管の前後方向の中心よりも前方に偏っており、風上側冷媒流通管の前後方向の中心が、両ヘッダタンクの風上ヘッダ部および冷媒出口管の前後方向の中心よりも後方に偏っており、熱交換コア部の通風方向の幅が、冷媒出口管の外径の２倍の寸法よりも小さく、ヘッダタンクの通風方向の幅が、冷媒出口管の外径の２倍の寸法よりも大きく、ヘッダタンクの風下ヘッダ部および風上ヘッダ部の内部横断面積が、それぞれ冷媒出口管の内部横断面積以上の大きさとなっている車両用空調装置。 A casing having an air inlet and an air outlet and having a ventilation passage through which the air inlet and the air outlet are formed, and temperature adjustment of the air provided in the casing and fed into the ventilation passage The temperature control unit to be performed, the evaporator disposed in the temperature control unit, and air are fed into the ventilation passage of the casing through the air inlet, and the air whose temperature has been adjusted in the temperature control unit is fed into the vehicle interior through the air outlet. A blower that blows out air, and a direction in which the ventilation path of the casing is perpendicular to the longitudinal direction of the refrigerant distribution pipe section on one side of the evaporator header tank in the longitudinal direction of the air introduced into the ventilation path To the front side of the heat exchanging core part, and the air heating part and the empty part on the rear side of the evaporator in the ventilation path in the casing. A bypass part is provided to bypass the heating part, and the temperature adjustment part passes through the heater core disposed in the air heating part of the ventilation path in the casing, the amount of air sent to the heater core after passing through the evaporator, and the evaporator And an air mix damper that adjusts the ratio of the amount of air that bypasses the heater core later.
A pair of headers in which the evaporator of the temperature control unit has a windward header portion disposed on the leeward header portion and the leeward header portion on the leeward header portion , with the longitudinal direction being directed in the same direction and spaced apart from each other A plurality of leeward refrigerant flow pipes provided between the tank and the pair of header tanks, both ends of which communicate with the leeward headers of both header tanks, and a plurality of winds of which both ends communicate with the leeward headers of both header tanks. A heat exchange core portion having an upper refrigerant flow pipe portion, a refrigerant inlet is provided in the leeward header portion of one header tank, and a refrigerant outlet is also provided in the upwind header portion. refrigerant outlet pipe is connected to the refrigerant outlet together with the refrigerant inlet pipe is connected, ventilation gap ventilating direction opposite open ends between the refrigerant flow tube portions to each other adjacent the heat exchange core portion is formed, Lower refrigerant flow tube portion and the windward side refrigerant flow tube portions is a vehicle air-conditioning system has a flat shape oriented in the longitudinal direction in the width direction with directing the longitudinal direction in the vertical direction,
The center in the front-rear direction of the leeward refrigerant flow pipe part of the evaporator is biased forward from the center in the front-rear direction of the leeward header part and the refrigerant inlet pipe of both header tanks, and the center in the front-rear direction of the windward refrigerant flow pipe is The upstream header portions of both header tanks and the center of the refrigerant outlet pipe are biased rearward, and the width of the heat exchange core portion in the ventilation direction is more than twice the outer diameter of the refrigerant outlet pipe. Small, the width of the header tank in the ventilation direction is larger than twice the outer diameter of the refrigerant outlet pipe, and the internal cross-sectional areas of the leeward header part and the windward header part of the header tank respectively cross the refrigerant outlet pipe. A vehicle air conditioner that is larger than the area.
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| JP2013115218A JP6170742B2 (en) | 2013-05-31 | 2013-05-31 | Air conditioner for vehicles |
| CN201420287192.4U CN203928504U (en) | 2013-05-31 | 2014-05-30 | Evaporimeter and air conditioner for vehicles |
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