JP2003172553A - Refrigerating cycle device and vehicular air-conditioner - Google Patents
Refrigerating cycle device and vehicular air-conditionerInfo
- Publication number
- JP2003172553A JP2003172553A JP2001372936A JP2001372936A JP2003172553A JP 2003172553 A JP2003172553 A JP 2003172553A JP 2001372936 A JP2001372936 A JP 2001372936A JP 2001372936 A JP2001372936 A JP 2001372936A JP 2003172553 A JP2003172553 A JP 2003172553A
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- seat side
- pressure
- air conditioning
- rear seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、並列に設けた第
１、第２の蒸発器を有する冷凍サイクル装置及び車両用
空調装置に関するもので、特に車室内前席側の領域を空
調する前席側空調ユニットと、車室内後席側の領域を空
調する後席側空調ユニットとを備える車両用空調装置に
適用して好適である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigeration cycle apparatus having first and second evaporators arranged in parallel and an air conditioner for a vehicle, and more particularly to a front seat for air conditioning an area on the front seat side of a passenger compartment. It is suitable to be applied to a vehicle air conditioner including a side air conditioning unit and a rear seat side air conditioning unit that air-conditions a rear seat side area in a vehicle compartment.
【０００２】[0002]
【従来の技術】近年、市場においてミニバン等の大型乗
用車の需要が高まり、この大型乗用車においては車室内
容積が大きいので、車両用空調装置にも大能力化が要求
され、それに伴って、車室内空調用のユニットも、車室
内前席側のみに空調ユニットを配置するシングルエアコ
ンから車室内の前席側と後席側の両方に空調ユニットを
配置するデュアルエアコンへと変化してきている。2. Description of the Related Art In recent years, the demand for large passenger cars such as minivans has increased in the market, and since the volume of the passenger compartment in these large passenger vehicles is large, it is required that the air conditioning system for the vehicle also has a large capacity. The unit for air conditioning has also changed from a single air conditioner in which the air conditioning unit is arranged only on the front seat side in the vehicle interior to a dual air conditioner in which air conditioning units are arranged on both the front seat side and the rear seat side in the vehicle compartment.
【０００３】このデュアルエアコンの冷凍サイクルで
は、前席側と後席側でそれぞれ蒸発器を独立に設けると
共に、圧縮機と凝縮器は共通使用している。また、従来
のデュアルエアコンは、車両熱負荷に応じて冷房性能が
決められ、前席側空調ユニットと後席側空調ユニットの
能力割合は、一般的に実車での室温が前席・中席・後席
でほぼ同じ温度となるよう決められている。また、車室
内後席側に乗員が居ない時には後席側空調ユニットの作
動を停止させ、前席側空調ユニットのみを作動させる前
席側単独運転モードがある。In the refrigeration cycle of this dual air conditioner, evaporators are provided independently on the front seat side and the rear seat side, and the compressor and condenser are commonly used. In addition, the conventional dual air conditioner has its cooling performance determined according to the heat load of the vehicle, and the capacity ratio of the front seat side air conditioning unit and the rear seat side air conditioning unit is generally the room temperature in the actual vehicle in the front seats / middle seats / It is decided that the rear seats will have almost the same temperature. Further, there is a front seat side independent operation mode in which the operation of the rear seat side air conditioning unit is stopped and only the front seat side air conditioning unit is operated when there is no passenger on the rear seat side of the passenger compartment.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、車両が
導入される国や地域、或いは車両のバリエーションによ
って、前席・中席側の室温が後席側の室温より低くなる
ような冷房能力の設定が好まれる場合がある。例えば、
ファミリーカーとしてのバージョンの場合は車室内を均
一に冷やし、スポーティカーとしてのバージョンの場合
は前席・中席側優先で後席側の能力はさほど必要ないと
いうような場合がある。However, depending on the country or region where the vehicle is introduced or the variation of the vehicle, it is necessary to set the cooling capacity such that the room temperature of the front seat / middle seat side is lower than the room temperature of the rear seat side. May be preferred. For example,
In the case of the version as a family car, the passenger compartment is cooled evenly, and in the case of the version as a sporty car, there is a case where the front seat / middle seat side is prioritized and the rear seat side is not so necessary.
【０００５】この様な場合従来技術では、前席側蒸発器
の能力を向上させたり前席側送風機の性能を向上させた
りして前席側空調ユニットの冷房能力を向上させる対応
を取り、前席・中席側の室温が後席側の室温より低くな
るような冷房能力の割合設定が行われる。その結果、蒸
発器や送風機モータの仕様が特別なものになったり、場
合によってはクーラユニットや送風機ユニットのケース
を新設する必要が生じたりし、結果コストアップとなる
ことが問題となっている。In such a case, the prior art takes measures to improve the cooling capacity of the front seat side air conditioning unit by improving the capacity of the front seat side evaporator or the performance of the front seat side air blower. The cooling capacity ratio is set so that the room temperature on the seat / middle seat side is lower than the room temperature on the rear seat side. As a result, the specifications of the evaporator and the blower motor become special, and in some cases it is necessary to newly install a case for the cooler unit and the blower unit, resulting in an increase in cost.
【０００６】本発明は、上記従来技術の問題に鑑みて成
されたものであり、その目的は、並列に設けた第１、第
２蒸発器を有する冷凍サイクル装置において、その主要
冷凍サイクル機器の仕様を変更することなく、第１蒸発
器と第２蒸発器との冷却能力の割合を容易に変えられる
冷凍サイクル装置を提供することにある。更に、本発明
の他の目的は、この冷凍サイクル装置をデュアルエアコ
ンに適用可能とした車両用空調装置を提供することにあ
る。The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a refrigerating cycle apparatus having first and second evaporators provided in parallel with each other in the main refrigerating cycle equipment. It is an object of the present invention to provide a refrigeration cycle device that can easily change the ratio of the cooling capacities of the first evaporator and the second evaporator without changing the specifications. Another object of the present invention is to provide a vehicle air conditioner in which this refrigeration cycle device can be applied to a dual air conditioner.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本発明では以下の技術的手段を採用する。In order to achieve the above object, the present invention employs the following technical means.
【０００８】請求項１記載の発明では、冷媒を圧縮し吐
出する圧縮機（１６）と、この圧縮機（１６）から吐出
されたガス冷媒を冷却し凝縮させる凝縮器（１７）と、
この凝縮器（１７）で凝縮した液冷媒を減圧膨張させる
第１減圧手段（１９）と、この第１減圧手段（１９）に
て減圧膨張した冷媒を蒸発させる第１蒸発器（１５）
と、この第１蒸発器（１５）で蒸発したガス冷媒を圧縮
機（１６）へ戻す第１低圧配管部（４０）と、第１減圧
手段（１９）と並列に設けられ、凝縮器（１７）で凝縮
した液冷媒を減圧膨張させる第２減圧手段（３２）と、
第１蒸発器（１５）と並列に設けられ、第２減圧手段
（３２）にて減圧膨張した冷媒を蒸発させる第２蒸発器
（２８）と、第１低圧配管部（４０）と並列に設けら
れ、第２蒸発器（２８）で蒸発したガス冷媒を圧縮機
（１６）へ戻す第２低圧配管部（３４）とを備えて構成
する冷凍サイクル装置において、第２低圧配管部（３
４）の一部を交換可能な交換可能配管部（４１）で構成
し、この交換可能配管部（４１）は所定の圧力損失を生
じさせる圧力損失手段（４１ｂ、４１ｃ、４２）を有
し、この圧力損失手段（４１ｂ、４１ｃ、４２）によっ
て第１蒸発器（１５）と第２蒸発器（２８）との冷却能
力の割合を可変したことを特徴とする。According to the first aspect of the invention, a compressor (16) for compressing and discharging the refrigerant, and a condenser (17) for cooling and condensing the gas refrigerant discharged from the compressor (16),
A first decompression means (19) for decompressing and expanding the liquid refrigerant condensed by the condenser (17), and a first evaporator (15) for evaporating the refrigerant decompressed and expanded by the first decompressing means (19).
And a first low pressure pipe section (40) for returning the gas refrigerant evaporated in the first evaporator (15) to the compressor (16) and a first pressure reducing means (19), and the condenser (17). Second decompression means (32) for decompressing and expanding the liquid refrigerant condensed in),
A second evaporator (28) provided in parallel with the first evaporator (15) for evaporating the refrigerant decompressed and expanded by the second depressurizing means (32), and provided in parallel with the first low-pressure pipe section (40). And a second low-pressure pipe section (34) for returning the gas refrigerant evaporated in the second evaporator (28) to the compressor (16), the second low-pressure pipe section (3).
4) A part of 4) is composed of a replaceable pipe part (41), and this replaceable pipe part (41) has pressure loss means (41b, 41c, 42) for causing a predetermined pressure loss, This pressure loss means (41b, 41c, 42) is characterized in that the ratio of the cooling capacity of the first evaporator (15) and the second evaporator (28) is varied.
【０００９】これは、第１蒸発器（１５）で蒸発したガ
ス冷媒を圧縮機（１６）へ戻す第１低圧配管部（４０）
と、第２蒸発器（２８）で蒸発したガス冷媒を圧縮機
（１６）へ戻す第２低圧配管部（３４）とで、いずれか
一方の圧力損失を変化させることで冷媒流量の割合が変
化し、第１蒸発器（１５）と第２蒸発器（２８）との冷
却能力の割合を変化させることができることに着目した
ものである。This is the first low-pressure pipe section (40) for returning the gas refrigerant evaporated in the first evaporator (15) to the compressor (16).
And the second low-pressure pipe section (34) that returns the gas refrigerant evaporated in the second evaporator (28) to the compressor (16), the ratio of the refrigerant flow rate changes by changing the pressure loss of one of them. However, the present invention focuses on the fact that the cooling capacity ratios of the first evaporator (15) and the second evaporator (28) can be changed.
【００１０】よって、本冷凍サイクル装置を構成する圧
縮機（１６）、凝縮器（１７）、第１・第２減圧手段
（１９、３２）、第１・第２蒸発器（１５、２８）等の
主要冷凍サイクル機器は、第１蒸発器（１５）と第２蒸
発器（２８）とで略均等な冷却能力が発揮できるよう各
仕様を決めたうえ、第１蒸発器（１５）と第２蒸発器
（２８）とで冷却能力に差を設けたい場合、いずれか一
方の低圧配管部、本発明では第２低圧配管部（３４）に
圧力損失手段（４１ｂ、４１ｃ、４２）を設けるように
しており、その圧力損失手段（４１ｂ、４１ｃ、４２）
が組み込み容易なように第２低圧配管部（３４）の一部
に交換可能な交換可能配管部（４１）を設けている。Therefore, the compressor (16), the condenser (17), the first and second depressurizing means (19, 32), the first and second evaporators (15, 28), etc. which compose the present refrigeration cycle apparatus. In the main refrigeration cycle equipment of No. 1, the respective specifications are determined so that the first evaporator (15) and the second evaporator (28) can exhibit substantially equal cooling capacity, and then the first evaporator (15) and the second evaporator (15) When it is desired to provide the evaporator (28) with a difference in cooling capacity, the pressure loss means (41b, 41c, 42) should be provided in either one of the low pressure pipe parts, that is, the second low pressure pipe part (34) in the present invention. And its pressure loss means (41b, 41c, 42)
A replaceable pipe part (41) is provided in a part of the second low-pressure pipe part (34) so that it can be easily assembled.
【００１１】これにより、主要冷凍サイクル機器の仕様
を変更することなく交換可能配管部（４１）の仕様を変
更するだけで、第１蒸発器（１５）と第２蒸発器（２
８）との冷却能力の割合を容易に変えることができる。As a result, the first evaporator (15) and the second evaporator (2) can be simply changed by changing the specifications of the replaceable pipe section (41) without changing the specifications of the main refrigeration cycle equipment.
The ratio of the cooling capacity with 8) can be easily changed.
【００１２】請求項２記載の発明では、圧力損失手段
（４１ｂ）として、交換可能配管部（４１）を配管径の
小さなものと組み替えたことを特徴とする。これによ
り、第１低圧配管部（４０）に対して第２低圧配管部
（３４）の圧力損失が大きくなり、冷媒流量の割合が変
わることから第１蒸発器（１５）と第２蒸発器（２８）
との冷却能力の割合を変えることができる。The invention according to claim 2 is characterized in that the replaceable pipe portion (41) is replaced with a small pipe diameter as the pressure loss means (41b). As a result, the pressure loss of the second low-pressure pipe section (34) becomes larger than that of the first low-pressure pipe section (40), and the ratio of the refrigerant flow rate changes, so that the first evaporator (15) and the second evaporator ( 28)
It is possible to change the ratio of the cooling capacity with.
【００１３】請求項３記載の発明では、圧力損失手段
（４２）として、交換可能配管部（４１）に絞り部品
（４２）を組み込んだことを特徴とする。また、請求項
４記載の発明では、圧力損失手段（４１ｃ）として、交
換可能配管部（４１）の一部に絞り形状（４１ｃ）を形
成したことを特徴とする。The invention according to claim 3 is characterized in that, as the pressure loss means (42), a throttle component (42) is incorporated in the replaceable pipe portion (41). Further, the invention according to claim 4 is characterized in that, as the pressure loss means (41c), a narrowed shape (41c) is formed in a part of the replaceable pipe part (41).
【００１４】これらいずれの技術的手段によっても、第
１低圧配管部（４０）に対して第２低圧配管部（３４）
の圧力損失が大きくなり、冷媒流量の割合が変わること
から第１蒸発器（１５）と第２蒸発器（２８）との冷却
能力の割合を変えることができる。By any of these technical means, the second low-pressure pipe section (34) is set to the first low-pressure pipe section (40).
Since the pressure loss of the refrigerant increases and the ratio of the refrigerant flow rate changes, the ratio of the cooling capacities of the first evaporator (15) and the second evaporator (28) can be changed.
【００１５】請求項５記載の発明では、車室内前席側を
空調する前席側空調ユニット（１２）と、車室内後席側
を空調する後席側空調ユニット（２５）と、請求項１な
いし請求項４のいずれかに記載の冷凍サイクル装置とを
備え、第１蒸発器（１５）を前席側空調ユニット（１
２）内の前席側蒸発器（１５）として配置し、第２蒸発
器（２８）を後席側空調ユニット（２５）内の後席側蒸
発器（２８）として配置したことを特徴とする。According to a fifth aspect of the present invention, a front seat side air conditioning unit (12) for air conditioning the front seat side of the vehicle interior, a rear seat side air conditioning unit (25) for air conditioning the rear seat side of the vehicle interior, The refrigeration cycle apparatus according to any one of claims 1 to 4, wherein the first evaporator (15) is provided in the front seat side air conditioning unit (1).
2) is arranged as a front seat side evaporator (15), and the second evaporator (28) is arranged as a rear seat side evaporator (28) in the rear seat side air conditioning unit (25). .
【００１６】これにより、前席側と後席側に空調ユニッ
トを備えるデュアルエアコンタイプの車両用空調装置に
おいて、前席・中席側の室温が後席側の室温より低くな
るよう冷房能力の割合を設定したい場合、蒸発器や送風
機等主要空調機器の仕様を変更することなく、交換可能
配管部（４１）の仕様を変更するだけで、前席側空調ユ
ニット（１２）と後席側空調ユニット（２５）との冷房
能力の割合を容易に変えることができる。As a result, in a dual air-conditioner type vehicle air conditioner having air conditioning units on the front seat side and the rear seat side, the cooling capacity is controlled so that the room temperature on the front seat / middle seat side becomes lower than the room temperature on the rear seat side. If you want to set, you can change the specifications of the replaceable piping section (41) without changing the specifications of the main air conditioning equipment such as the evaporator and blower. The ratio of the cooling capacity to (25) can be easily changed.
【００１７】その結果、蒸発器や送風機モータの仕様を
特別なものにしたり、クーラユニットや送風機ユニット
のケースを新設したりする必要がなく、前後空調ユニッ
トで冷房能力の割合を可変する場合のコストを抑えるこ
とができる。因みに、上記各手段の括弧内の符号は、後
述する実施形態に記載の具体的手段との対応関係を示す
一例である。As a result, there is no need to specialize the specifications of the evaporator or the blower motor or to install a new case for the cooler unit or the blower unit, and the cost for varying the cooling capacity ratio between the front and rear air conditioning units. Can be suppressed. Incidentally, the reference numerals in parentheses of the above-mentioned respective means are examples showing the corresponding relationship with the concrete means described in the embodiments described later.
【００１８】[0018]
【発明の実施の形態】以下、本発明の実施形態を、図面
に基づき説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００１９】（第１実施形態）図１は、ミニバンタイプ
の乗用車の車両用空調装置に本発明を適用した一実施形
態の全体システム模式図であり、図２は図１の車両用空
調装置のシステム構成図である。ミニバンタイプの車両
１０の車室１１は前席（運転席及び助手席）の後方側に
２番目、３番目の座席（後席）を配置するようになって
おり、車両前後方向に長い空間を形成している。１１ａ
は車室１１の床面である。(First Embodiment) FIG. 1 is a schematic view of an entire system of an embodiment in which the present invention is applied to a vehicle air conditioner for a minivan type passenger car, and FIG. 2 shows a vehicle air conditioner of FIG. It is a system configuration diagram. The passenger compartment 11 of the minivan type vehicle 10 is arranged such that the second and third seats (rear seats) are arranged behind the front seats (driver's seat and passenger seat), and a long space is provided in the front-rear direction of the vehicle. Is forming. 11a
Is the floor of the passenger compartment 11.
【００２０】前席側空調ユニット１２は、車室１１内の
最前部の計器盤（図示せず）の内側部に配設されて、車
室内前席側の領域を空調するものである。前席側空調ユ
ニット１２は、空気通路を形成するケース１３を有し、
このケース１３の上流部に送風機１４を配置している。
この送風機１４は図示しない内外気切替箱から切替導入
される内気または外気を送風する。The front seat side air conditioning unit 12 is arranged inside the forefront instrument panel (not shown) in the vehicle compartment 11 and air-conditions the area on the front seat side of the vehicle compartment. The front seat side air conditioning unit 12 has a case 13 forming an air passage,
A blower 14 is arranged upstream of the case 13.
The blower 14 blows the inside air or the outside air switched and introduced from an inside / outside air switching box (not shown).
【００２１】送風機１４の下流には送風空気を冷却する
冷却用熱交換器として冷凍サイクルＲの蒸発器（第１蒸
発器）１５が配置されている。ここで、冷凍サイクルＲ
は周知の構成であり、車両エンジン（図示せず）により
電磁クラッチ１６ａを介して駆動される圧縮機１６を備
えている。この圧縮機１６により冷媒は高温高圧に圧縮
され、この圧縮機１６から吐出されたガス冷媒は凝縮器
１７に導入され、この凝縮器１７にてガス冷媒は図示し
ない冷却ファンにより送風される外気と熱交換して凝縮
する。An evaporator (first evaporator) 15 of the refrigeration cycle R is arranged downstream of the blower 14 as a cooling heat exchanger for cooling the blown air. Here, the refrigeration cycle R
Has a known structure, and includes a compressor 16 driven by a vehicle engine (not shown) via an electromagnetic clutch 16a. The refrigerant is compressed to a high temperature and high pressure by the compressor 16, the gas refrigerant discharged from the compressor 16 is introduced into the condenser 17, and the gas refrigerant is discharged to the outside air blown by a cooling fan (not shown) in the condenser 17. Heat exchange to condense.
【００２２】凝縮器１７を通過した冷媒を受液器１８に
て液相冷媒と気相冷媒とに分離すると共に、液相冷媒を
受液器１８内に貯留する。受液器１８からの液冷媒は前
席側温度式膨張弁（第１減圧手段）１９にて低圧の気液
二相冷媒に減圧し、この減圧後の低圧冷媒を上記蒸発器
１５において空調空気から吸熱して蒸発させるようにな
っている。The refrigerant that has passed through the condenser 17 is separated into a liquid phase refrigerant and a vapor phase refrigerant by the liquid receiver 18, and the liquid phase refrigerant is stored in the liquid receiver 18. The liquid refrigerant from the liquid receiver 18 is decompressed to a low-pressure gas-liquid two-phase refrigerant by the front seat temperature type expansion valve (first decompression means) 19, and the decompressed low-pressure refrigerant is conditioned air in the evaporator 15. It absorbs heat and evaporates.
【００２３】前席側温度式膨張弁１９は周知のごとく蒸
発器１５出口の冷媒過熱度が所定値に維持されるように
弁開度を自動調整するものである。そのため、前席側温
度式膨張弁１９は、蒸発器１５出口の冷媒温度を感知す
る感温部と、この感温部の感知した冷媒温度に対応した
圧力が加えられる第１圧力室と、蒸発器１５の冷媒圧力
（サイクル低圧）が加えられる第２圧力室と、この第
１、第２圧力室を仕切るダイヤフラムとを備え、第１、
第２圧力室の圧力差とばね力とに応じてダイヤフラム及
び弁体が変位して冷媒流量を調整するようになってい
る。As is well known, the front seat side thermal expansion valve 19 automatically adjusts the valve opening so that the refrigerant superheat at the outlet of the evaporator 15 is maintained at a predetermined value. Therefore, the front seat side thermal expansion valve 19 includes a temperature sensing unit that senses the refrigerant temperature at the outlet of the evaporator 15, a first pressure chamber to which a pressure corresponding to the refrigerant temperature sensed by the temperature sensing unit is applied, and evaporation. A second pressure chamber to which the refrigerant pressure (cycle low pressure) of the container 15 is applied; and a diaphragm for partitioning the first and second pressure chambers,
The diaphragm and the valve body are displaced according to the pressure difference of the second pressure chamber and the spring force to adjust the refrigerant flow rate.
【００２４】蒸発器１５において蒸発した後のガス冷媒
は前席側低圧配管部（第１低圧配管部）４０及び１６ｂ
を通って再度圧縮機１６に吸入され、圧縮される。尚、
冷凍サイクルＲのうち、圧縮機１６、凝縮器１７、受液
器１８等の機器は、車室１１より前方側のエンジンルー
ム２０内に搭載されている。The gas refrigerant after being evaporated in the evaporator 15 is the low pressure piping section (first low pressure piping section) 40 and 16b on the front seat side.
It is again sucked into the compressor 16 through the compressor and compressed. still,
In the refrigeration cycle R, devices such as the compressor 16, the condenser 17, and the liquid receiver 18 are mounted in an engine room 20 on the front side of the vehicle interior 11.
【００２５】前席側空調ユニット１２内において、蒸発
器１５の空気吹出部には温度センサ２１が配置され、こ
の温度センサ２１により検出される蒸発器吹出空気温度
（蒸発器冷却温度）が所定値以下に低下すると、電磁ク
ラッチ１６ａへの通電を遮断して圧縮機１６の運転を停
止することにより蒸発器１５のフロストを防止するよう
になっている。In the front seat side air conditioning unit 12, a temperature sensor 21 is arranged at the air blowing portion of the evaporator 15, and the temperature of the air blown from the evaporator (evaporator cooling temperature) detected by the temperature sensor 21 is a predetermined value. When it drops below, the electromagnetic clutch 16a is de-energized to stop the operation of the compressor 16 to prevent the frost of the evaporator 15.
【００２６】次に、蒸発器１５の空気流れ下流側には、
車両エンジンからの温水により空調空気を加熱するヒー
タコア（加熱用熱交換器）２２が配置されている。この
ヒータコア２２の側方にはバイパス路２３が形成されて
いる。そして、ヒータコア２２に隣接し板状のエアミッ
クスドア２４が回動可能に配置され、このエアミックス
ドア２４の回動位置の選択により、ヒータコア２２を通
過して加熱される温風とバイパス路２３を通過する冷風
との風量割合を調整して吹出空気温度を調整する。Next, on the downstream side of the evaporator 15 in the air flow,
A heater core (heating heat exchanger) 22 for heating the conditioned air with hot water from the vehicle engine is arranged. A bypass 23 is formed on the side of the heater core 22. A plate-shaped air mix door 24 is rotatably arranged adjacent to the heater core 22, and the hot air heated by passing through the heater core 22 and the bypass passage 23 are selected by selecting the rotating position of the air mix door 24. The blown air temperature is adjusted by adjusting the air volume ratio with the cold air passing through.
【００２７】前席側空調ユニット１２の下流端には、図
示しないデフロスタ吹出開口部、フェイス吹出開口部及
びフット吹出開口部が開口しており、これらの開口部は
図示しない吹出モードドアにより切替開閉され、各開口
部を通過した空調空気は、それぞれ車両窓ガラスの内
面、前席側乗員の頭部、足元部に向けて吹き出される。A defroster blow-out opening, a face blow-out opening and a foot blow-out opening (not shown) are opened at the downstream end of the front seat side air conditioning unit 12, and these openings are opened and closed by a blow-out mode door (not shown). The conditioned air that has passed through the openings is blown out toward the inner surface of the vehicle window glass, the head of the front-side occupant, and the feet.
【００２８】次に、後席側空調ユニット２５は車室内の
後席側を空調するように車室１１内の後部、例えば、後
席の側方部位等に配置される。この後席側空調ユニット
２５のケース２６内には、内気を吸入して送風する送風
機２７が備えられ、この送風機２７の下流側に後席側蒸
発器（第２蒸発器）２８が配置されている。Next, the rear seat side air conditioning unit 25 is arranged in the rear part of the vehicle compartment 11, for example, at a side portion of the rear seat so as to air-condition the rear seat side of the vehicle compartment. In the case 26 of the rear seat side air conditioning unit 25, there is provided a blower 27 that sucks and blows the inside air, and a rear seat side evaporator (second evaporator) 28 is arranged downstream of the blower 27. There is.
【００２９】次に、蒸発器２８の空気流れ下流側には、
車両エンジンからの温水により空調空気を加熱するヒー
タコア（加熱用熱交換器）２９が配置されている。この
ヒータコア２９の側方にはバイパス路３０が形成されて
いる。そして、ヒータコア２９に隣接し板状の冷風バイ
パスドア３１が回動可能に配置され、この冷風バイパス
ドア３１によりバイパス路３０を後席側空調ユニット２
５の吹き出しモードと風量レベルに応じて開閉する。Next, at the air flow downstream side of the evaporator 28,
A heater core (heating heat exchanger) 29 for heating the conditioned air with hot water from the vehicle engine is arranged. A bypass passage 30 is formed on the side of the heater core 29. Then, a plate-shaped cold air bypass door 31 is rotatably arranged adjacent to the heater core 29, and the cold air bypass door 31 causes the bypass passage 30 to move through the rear seat side air conditioning unit 2.
It opens and closes according to the blowing mode of 5 and the air volume level.
【００３０】後席側蒸発器２８の冷媒入口部には後席側
温度式膨張弁３２（第２減圧手段）が備えられている。
この後席側温度式膨張弁３２は、前席側温度式膨張弁１
９と同様のものであり、受液器１８からの高温高圧の液
冷媒を低温低圧の気液二相冷媒に減圧する減圧手段を成
すもので、後席側蒸発器２８の出口部の冷媒の過熱度が
予め設定した所定値となるように弁開度を調整して、冷
媒流量を調整するものである。A rear seat side thermal expansion valve 32 (second pressure reducing means) is provided at the refrigerant inlet of the rear seat evaporator 28.
The rear seat side thermal expansion valve 32 is the front seat side thermal expansion valve 1
9 is the same as that of FIG. 9, and constitutes a pressure reducing means for reducing the high-temperature high-pressure liquid refrigerant from the liquid receiver 18 to a low-temperature low-pressure gas-liquid two-phase refrigerant. The valve opening is adjusted so that the degree of superheat becomes a preset value, and the refrigerant flow rate is adjusted.
【００３１】尚、冷凍サイクルＲにおいて、後席側の温
度式膨張弁３２の入口側は後席側高圧配管部（第２高圧
配管部）３３を介して前席側の温度式膨張弁１９の入口
側と分岐接続され、また、後席側の蒸発器２８の出口側
は後席側低圧配管部（第２低圧配管部）３４を介して前
席側の蒸発器１５の出口側の前席側低圧配管部（第１低
圧配管部）４０と合流接続されている。これにより、後
席側の蒸発器２８及び温度式膨張弁３２は前席側の蒸発
器１５及び温度式膨張弁１９と並列に接続されている。In the refrigeration cycle R, the inlet side of the thermal expansion valve 32 on the rear seat side is connected to the thermal expansion valve 19 on the front seat side via a rear high pressure pipe section (second high pressure piping section) 33. It is branched and connected to the inlet side, and the outlet side of the evaporator 28 on the rear seat side is connected to the front seat on the outlet side of the evaporator 15 on the front seat side via the rear seat side low-pressure pipe section (second low-pressure pipe section) 34. The side low-pressure piping section (first low-pressure piping section) 40 is joined and connected. As a result, the evaporator 28 and the thermal expansion valve 32 on the rear seat side are connected in parallel with the evaporator 15 and the thermal expansion valve 19 on the front seat side.
【００３２】後席側高圧配管部３３及び後席側低圧配管
部３４は、車室１１の床面１１ａの下側に形成される床
下空間３５に配置され、実際は図２に示すように、何本
かの高低圧配管を接続して構成している。The rear seat side high-pressure pipe section 33 and the rear seat side low-pressure pipe section 34 are arranged in an underfloor space 35 formed below the floor surface 11a of the passenger compartment 11, and as shown in FIG. It is configured by connecting several high and low pressure pipes.
【００３３】また、図２に示すように、前席側空調ユニ
ット１３内の前席側蒸発器１５で蒸発したガス冷媒を圧
縮機１６へ戻す前席側低圧配管部４０は三方分岐配管と
なっており、一方に後席側空調ユニット２５内の後席側
蒸発器２８で蒸発したガス冷媒を圧縮機１６へ戻す後席
側低圧配管部３４が接続され、配管４０内でガス冷媒が
合流し、もう一方に接続された圧縮機１６への吸入配管
１６ｂへと流れるようになっている。As shown in FIG. 2, the front seat low-pressure pipe section 40 for returning the gas refrigerant evaporated in the front seat evaporator 15 in the front seat air conditioning unit 13 to the compressor 16 is a three-way branch pipe. On the other hand, the rear seat low-pressure pipe section 34 for returning the gas refrigerant evaporated in the rear seat evaporator 28 in the rear seat air conditioning unit 25 to the compressor 16 is connected to one side, and the gas refrigerant merges in the pipe 40. , To the suction pipe 16b to the compressor 16 connected to the other side.
【００３４】そして、後席側空調ユニット２５におい
て、蒸発器２８の下流直後の部位にフェイス吹出開口部
３６及び吹出モードドア３７が配置され、後席側蒸発器
２８で冷却された冷風はフェイス吹出開口部３６から後
席側フェイスダクト３８を通って天井吹出口３８ａから
後席側乗員の頭部に向けて吹き出す。また、ヒータコア
２９で加熱された温風は、後席側フットダクト３９を通
って後席側フット吹出口３９ａから後席側乗員の足元部
に向けて吹き出される。In the rear seat side air conditioning unit 25, the face outlet 36 and the outlet mode door 37 are arranged immediately downstream of the evaporator 28 so that the cool air cooled by the rear evaporator 28 is discharged from the face. The air is blown from the opening 36 through the rear seat side face duct 38 toward the head of the rear seat occupant from the ceiling outlet 38a. The warm air heated by the heater core 29 passes through the rear seat foot duct 39 and is blown from the rear seat foot outlet 39a toward the foot portion of the rear seat occupant.
【００３５】次に、上記構成において作動を説明する。
先ず、前席側空調ユニット１２及び後席側空調ユニット
２５を共に作動させる時は、前後両方の送風機１４、２
７が作動して、両空調ユニット１２、２５に送風する。
そして、前席側操作パネル（図示せず）のエアコンスイ
ッチ（圧縮機作動スイッチ）が投入されると、電磁クラ
ッチ１６ａが通電され接続状態になるので、圧縮機１６
が車両エンジンにより駆動される。Next, the operation of the above structure will be described.
First, when operating both the front seat side air conditioning unit 12 and the rear seat side air conditioning unit 25, both the front and rear blowers 14, 2
7 operates to blow air to both air conditioning units 12 and 25.
Then, when the air conditioner switch (compressor operation switch) on the front seat side operation panel (not shown) is turned on, the electromagnetic clutch 16a is energized and brought into a connected state.
Is driven by the vehicle engine.
【００３６】これにより、前席側空調ユニット１２にお
いては、送風空気を蒸発器１５により冷却、除湿した後
に、ヒータコア２２により再加熱することができる。前
席側空調ユニット１２では、エアミックスドア２４によ
り冷風と温風の風量割合を任意に調整して車室内への吹
出温度を調整できる。As a result, in the front seat side air conditioning unit 12, the blower air can be cooled and dehumidified by the evaporator 15 and then reheated by the heater core 22. In the front seat side air conditioning unit 12, the temperature of air blown into the passenger compartment can be adjusted by arbitrarily adjusting the air flow rate of cool air and warm air by the air mix door 24.
【００３７】後席側空調ユニット２５では、吹出モード
ドア３７により、吹き出しモードをフェイスモードとフ
ットモードとに切り替えることができ、フェイスモード
時には蒸発器２８により冷却、除湿した冷風を後席側フ
ェイスダクト３８を通して後席側の天井吹出口３８ａか
ら車室内後席側へ吹き出す。In the rear seat side air conditioning unit 25, the blowing mode door 37 can switch the blowing mode between the face mode and the foot mode. In the face mode, the cool air cooled and dehumidified by the evaporator 28 is used for the rear seat face duct. The air is blown out from the ceiling air outlet 38a on the rear seat side to the rear seat side in the passenger compartment through 38.
【００３８】また、フットモード時には送風空気が蒸発
器２８を通過した後ヒータコア２９により加熱されて温
風となり、この温風は後席側フットダクト３９を通して
後席側のフット吹出口３９ａから乗員足元部に吹き出
す。In the foot mode, the blown air passes through the evaporator 28 and is heated by the heater core 29 to become warm air, which passes through the rear seat foot duct 39 and the rear seat foot outlet 39a to the passenger's feet. Blow out to the club.
【００３９】次に、本実施形態の特徴を述べる。本実施
形態では、後席側低圧配管部３４の一部を交換可能にす
ると共に所定の圧力損失を生じさせる交換可能配管部４
１より構成し、この交換可能配管部４１は前記所定の圧
力損失を生じさせる圧力損失手段４１ｂ、４１ｃ、４２
を有し、この圧力損失手段４１ｂ、４１ｃ、４２によっ
て前席側蒸発器１５と後席側蒸発器２８との冷却能力の
割合を可変している。Next, the features of this embodiment will be described. In this embodiment, a part of the rear seat side low-pressure pipe part 34 is replaceable and a replaceable pipe part 4 that causes a predetermined pressure loss.
1 and the replaceable pipe portion 41 is pressure loss means 41b, 41c, 42 for causing the predetermined pressure loss.
The pressure loss means 41b, 41c, 42 change the cooling capacity ratio of the front seat side evaporator 15 and the rear seat side evaporator 28.
【００４０】具体的に本実施形態では、三方分岐配管４
０に接続する後席側低圧配管部３４の最終部分を交換可
能配管部４１としている。図３はその本実施形態におけ
る交換可能配管部４１近傍の構成図であり、圧力損失手
段として交換可能配管部４１を径の小さな配管４１ｂと
組み替えた状態を示す。Specifically, in this embodiment, the three-way branch pipe 4
The final portion of the rear seat side low-pressure pipe portion 34 connected to 0 is a replaceable pipe portion 41. FIG. 3 is a configuration diagram in the vicinity of the replaceable pipe part 41 in the present embodiment, and shows a state in which the replaceable pipe part 41 is replaced with a pipe 41b having a small diameter as a pressure loss means.
【００４１】図４、図５は図３の配管接続部の構造を示
す部分断面構造図である。前席側蒸発器１５と後席側蒸
発器２８とを略均等の冷却能力割合とする場合は、図４
のように交換可能配管部４１も他の部分と同等のφ１６
の配管４１ａとする。よって、その両側に接続する後席
側低圧配管部３４及び三方分岐配管４０も先端ユニオン
がφ１６に対応したものが付く配管３４ａ、４０ａとす
る。FIGS. 4 and 5 are partial sectional structural views showing the structure of the pipe connecting portion of FIG. When the front seat side evaporator 15 and the rear seat side evaporator 28 are made to have a substantially equal cooling capacity ratio, FIG.
The replaceable pipe part 41 has a diameter of 16 mm, which is the same as the other parts.
Pipe 41a. Therefore, the rear seat side low-pressure pipe section 34 and the three-way branch pipe 40 connected to both sides thereof are also pipes 34a, 40a to which the tip unions correspond to φ16.
【００４２】また、前席側蒸発器１５の冷却能力優先
で、後席側蒸発器２８の冷却能力はさほど必要ない能力
割合とする場合は、図３、図５のように交換可能配管部
４１を径の小さな配管４１ｂ（実施例ではφ８）とす
る。よって、その両側に接続する後席側低圧配管部３４
及び三方分岐配管４０も先端ユニオンがφ８に対応した
ものが付く配管３４ｂ、４０ｂとする。When the cooling capacity of the front-seat evaporator 15 is prioritized and the cooling capacity of the rear-seat evaporator 28 is set to an unnecessarily low cooling capacity ratio, the replaceable piping section 41 is set as shown in FIGS. Is a pipe 41b having a small diameter (φ8 in the embodiment). Therefore, the rear seat low-pressure pipe section 34 connected to both sides thereof
Also, the three-way branch pipes 40 are pipes 34b and 40b with the tip unions corresponding to φ8.
【００４３】図９は本発明の作用を説明するグラフであ
る。後席側低圧配管部３４の圧力損失が小さな構成の場
合、冷媒流量は前席側も後席側も略同等であり、前席側
蒸発器１５と後席側蒸発器２８との冷却能力割合も略同
等となり、結果車室内の室温も前席、中席、後席ででほ
ぼ同じ温度となる。FIG. 9 is a graph for explaining the operation of the present invention. When the pressure loss in the rear low-pressure pipe section 34 is small, the refrigerant flow rate is substantially the same in both the front seat side and the rear seat side, and the cooling capacity ratio between the front seat side evaporator 15 and the rear seat side evaporator 28 is high. As a result, the room temperature inside the passenger compartment is almost the same in the front, middle and rear seats.
【００４４】また、後席側低圧配管部３４の圧力損失が
大きくなる構成とした場合は、冷媒流量は前席側が多く
後席側が少なくなり、前席側蒸発器１５と後席側蒸発器
２８との冷却能力割合も前席側が大きく後席側が小さく
なり、結果車室内の室温も前席、中席が低く、後席です
こし高い温度分布となる。When the pressure loss in the rear low-pressure pipe section 34 is large, the refrigerant flow rate is large in the front seat side and small in the rear seat side, so that the front seat side evaporator 15 and the rear seat side evaporator 28 are connected. As for the cooling capacity ratio of and, the front seat side is large and the rear seat side is small.
【００４５】このように、交換可能配管部４１の配管径
を可変することで第１低圧配管部４０に対して第２低圧
配管部３４の圧力損失が変わり、冷媒流量の割合が変わ
ることから、主要冷凍サイクル機器の仕様を変更するこ
となく交換可能配管部４１の仕様を変更するだけで第１
蒸発器１５と第２蒸発器２８との冷却能力の割合を変え
ることができる。As described above, by changing the pipe diameter of the replaceable pipe portion 41, the pressure loss of the second low pressure pipe portion 34 with respect to the first low pressure pipe portion 40 changes, and the ratio of the refrigerant flow rate changes. Replaceable without changing the specifications of main refrigeration cycle equipment.
The ratio of the cooling capacities of the evaporator 15 and the second evaporator 28 can be changed.
【００４６】また、当発明を前席側と後席側に空調ユニ
ットを備えるデュアルエアコンタイプの車両用空調装置
に適用することにより、前席・中席側の室温が後席側の
室温より低くなるよう冷房能力の割合を設定したい場
合、蒸発器や送風機等主要空調機器の仕様を変更するこ
となく、交換可能配管部４１の仕様を変更するだけで、
前席側空調ユニット１２と後席側空調ユニット２５との
冷房能力の割合を容易に変えることができる。By applying the present invention to a dual air conditioner type vehicle air conditioner having air conditioning units on the front seat side and the rear seat side, the room temperature of the front and middle seats is lower than the room temperature of the rear seat. If you want to set the ratio of cooling capacity so that, by changing the specifications of the replaceable pipe section 41 without changing the specifications of the main air conditioning equipment such as the evaporator and the blower,
It is possible to easily change the ratio of the cooling capacities of the front seat side air conditioning unit 12 and the rear seat side air conditioning unit 25.
【００４７】その結果、蒸発器や送風機モータの仕様を
特別なものにしたり、クーラユニットや送風機ユニット
のケースを新設したりする必要がなく、前後空調ユニッ
トで冷房能力の割合を可変する場合のコストを抑えるこ
とができる。As a result, it is not necessary to make the specifications of the evaporator and the blower motor special, or to newly install the case of the cooler unit and the blower unit, and the cost of varying the cooling capacity ratio between the front and rear air conditioning units. Can be suppressed.
【００４８】（第２実施形態）図６は本発明の第２実施
形態における交換可能配管部４１近傍の構成図であり、
図７は図６の配管接続部の構造を示す部分断面構造図で
ある。圧力損失手段として、通常径（φ１６）の交換可
能配管部４１ａにアルミニウムまたはナイロン等の樹脂
材で形成した絞り部品４２を組み込んでいる。(Second Embodiment) FIG. 6 is a block diagram of the vicinity of the replaceable pipe section 41 in the second embodiment of the present invention.
FIG. 7 is a partial cross-sectional structural view showing the structure of the pipe connecting portion of FIG. As a pressure loss means, a throttle component 42 made of a resin material such as aluminum or nylon is incorporated in the replaceable pipe portion 41a having a normal diameter (φ16).
【００４９】絞り部品４２を構成部品に加えて組み込む
か組み込まないかだけで、第１実施形態のように前後配
管まで含めて配管種類を変える必要がない。この様な絞
り部品４２によっても、第１低圧配管部４０に対して第
２低圧配管部３４の圧力損失が大きくなり、冷媒流量の
割合が変わることから第１蒸発器１５と第２蒸発器２８
との冷却能力の割合を変えることができる。It is not necessary to change the pipe type including the front and rear pipes as in the first embodiment only by incorporating or not incorporating the throttle component 42 in addition to the components. Even with such a throttle component 42, the pressure loss of the second low-pressure pipe portion 34 becomes larger than that of the first low-pressure pipe portion 40, and the ratio of the refrigerant flow rate changes, so that the first evaporator 15 and the second evaporator 28 are changed.
It is possible to change the ratio of the cooling capacity with.
【００５０】（第３実施形態）図８は本発明の第３実施
形態における交換可能配管部４１近傍の構成図である。
圧力損失手段として、通常径（φ１６）の交換可能配管
部４１ａの一部に、プレス加工等で絞り形状４１ｃを形
成している。この様な絞り形状４１ｃを設けた交換可能
配管部４１と交換することによっても、第１低圧配管部
４０に対して第２低圧配管部３４の圧力損失が大きくな
り、冷媒流量の割合が変わることから第１蒸発器１５と
第２蒸発器２８との冷却能力の割合を変えることができ
る。(Third Embodiment) FIG. 8 is a block diagram of the vicinity of the replaceable pipe section 41 in the third embodiment of the present invention.
As a pressure loss means, a narrowed shape 41c is formed by press working or the like on a part of the replaceable pipe portion 41a having the normal diameter (φ16). Even by exchanging with the replaceable pipe part 41 provided with such a throttle shape 41c, the pressure loss of the second low-pressure pipe part 34 with respect to the first low-pressure pipe part 40 becomes large, and the ratio of the refrigerant flow rate changes. Therefore, the ratio of the cooling capacities of the first evaporator 15 and the second evaporator 28 can be changed.
【００５１】（その他の実施形態）尚、上述の実施形態
では、前席側空調ユニット１２（第１蒸発器１５）の冷
房（冷却）能力を優先して後席側（第２）低圧配管部３
４の圧力損失を大きくしているが、後席側空調ユニット
２５（第２蒸発器２８）の冷房（冷却）能力を優先する
場合は前席側（第１）低圧配管部４０の圧力損失を上述
の方法で大きくすれば良いことは言うまでもない。(Other Embodiments) In the above-described embodiment, the rear seat (second) low-pressure piping section is prioritized for the cooling (cooling) capacity of the front seat side air conditioning unit 12 (first evaporator 15). Three
Although the pressure loss of No. 4 is increased, the pressure loss of the front seat side (first) low-pressure piping section 40 is set when the cooling (cooling) capacity of the rear seat side air conditioning unit 25 (second evaporator 28) is prioritized. It goes without saying that the size can be increased by the above method.
【００５２】また、上述の実施形態では、三方分岐配管
４０に接続する後席側低圧配管部３４の最終部分を交換
可能配管部４１としているが、交換可能配管部４１は後
席側低圧配管部３４の他の部分であっても良いし、後席
側低圧配管部３４全体であっても良い。また、上述の第
１実施形態では、交換可能配管部４１全体を径の小さな
配管としているが、この径が小さくなった部分は交換可
能配管部４１の何処か一部だけであっても良い。Further, in the above-mentioned embodiment, the last portion of the rear seat low-pressure pipe portion 34 connected to the three-way branch pipe 40 is the replaceable pipe portion 41, but the replaceable pipe portion 41 is the rear seat low-pressure pipe portion. It may be the other portion of 34 or the entire rear seat side low-pressure piping portion 34. Further, in the above-described first embodiment, the entire replaceable pipe part 41 is a pipe with a small diameter, but the part with the reduced diameter may be only a part of the replaceable pipe part 41.
【図１】本発明の一実施形態を示す車両用空調装置の全
体システム模式図である。FIG. 1 is an overall system schematic diagram of a vehicle air conditioner showing an embodiment of the present invention.
【図２】図１の車両用空調装置のシステム構成図であ
る。FIG. 2 is a system configuration diagram of the vehicle air conditioner of FIG.
【図３】本発明の第１実施形態における交換可能配管部
近傍の構成図である。FIG. 3 is a configuration diagram in the vicinity of a replaceable pipe section according to the first embodiment of the present invention.
【図４】図３の配管接続部の構造を示す部分断面構造図
である。FIG. 4 is a partial cross-sectional structural view showing the structure of the pipe connecting portion of FIG.
【図５】図３の配管接続部の構造を示す部分断面構造図
である。5 is a partial cross-sectional structural diagram showing the structure of the pipe connecting portion of FIG.
【図６】本発明の第２実施形態における交換可能配管部
近傍の構成図である。FIG. 6 is a configuration diagram in the vicinity of a replaceable pipe section according to a second embodiment of the present invention.
【図７】図６の配管接続部の構造を示す部分断面構造図
である。FIG. 7 is a partial cross-sectional structural view showing the structure of the pipe connecting portion of FIG.
【図８】（ａ）は本発明の第３実施形態における交換可
能配管部近傍の構成図であり、（ｂ）は（ａ）図中のＡ
−Ａ拡大断面図である。FIG. 8 (a) is a configuration diagram in the vicinity of a replaceable pipe section in the third embodiment of the present invention, and FIG. 8 (b) is A in FIG. 8 (a).
-A is an enlarged sectional view.
【図９】本発明の作用を説明するグラフである。FIG. 9 is a graph illustrating the operation of the present invention.
１２ 前席側空調ユニット
１５ 前席側蒸発器（第１蒸発器）
１６ 圧縮機
１７ 凝縮器
１９ 前席側膨張弁（第１減圧手段）
２５ 後席側空調ユニット
２８ 後席側蒸発器（第２蒸発器）
３２ 後席側膨張弁（第２減圧手段）
３４ 後席側低圧配管部（第２低圧配管部）
４０ 三方分岐配管、前席側低圧配管部（第１低圧配管
部）
４１ 交換可能配管部
４１ｂ 配管（圧力損失手段）
４１ｃ 絞り形状（圧力損失手段）
４２ 絞り部品（圧力損失手段）12 front seat side air conditioning unit 15 front seat side evaporator (first evaporator) 16 compressor 17 condenser 19 front seat side expansion valve (first pressure reducing means) 25 rear seat side air conditioning unit 28 rear seat side evaporator (first 2 Evaporator) 32 Rear seat expansion valve (second pressure reducing means) 34 Rear seat low pressure piping (second low pressure piping) 40 Three-way branch piping, front seat low pressure piping (first low pressure piping) 41 Replacement Possible piping part 41b Piping (pressure loss means) 41c Throttling shape (pressure loss means) 42 Throttling parts (pressure loss means)
Claims (5)
と、この圧縮機（１６）から吐出されたガス冷媒を冷却
し凝縮させる凝縮器（１７）と、この凝縮器（１７）で
凝縮した液冷媒を減圧膨張させる第１減圧手段（１９）
と、この第１減圧手段（１９）にて減圧膨張した冷媒を
蒸発させる第１蒸発器（１５）と、この第１蒸発器（１
５）で蒸発したガス冷媒を前記圧縮機（１６）へ戻す第
１低圧配管部（４０）と、 前記第１減圧手段（１９）と並列に設けられ、前記凝縮
器（１７）で凝縮した液冷媒を減圧膨張させる第２減圧
手段（３２）と、前記第１蒸発器（１５）と並列に設け
られ、前記第２減圧手段（３２）にて減圧膨張した冷媒
を蒸発させる第２蒸発器（２８）と、前記第１低圧配管
部（４０）と並列に設けられ、前記第２蒸発器（２８）
で蒸発したガス冷媒を前記圧縮機（１６）へ戻す第２低
圧配管部（３４）とを備えて構成する冷凍サイクル装置
において、 前記第２低圧配管部（３４）の一部を交換可能な交換可
能配管部（４１）で構成し、この交換可能配管部（４
１）は前記所定の圧力損失を生じさせる圧力損失手段
（４１ｂ、４１ｃ、４２）を有し、この圧力損失手段
（４１ｂ、４１ｃ、４２）によって前記第１蒸発器（１
５）と前記第２蒸発器（２８）との冷却能力の割合を可
変したことを特徴とする冷凍サイクル装置。1. A compressor (16) for compressing and discharging a refrigerant.
A condenser (17) for cooling and condensing the gas refrigerant discharged from the compressor (16); and a first pressure reducing means (19) for decompressing and expanding the liquid refrigerant condensed by the condenser (17).
A first evaporator (15) for evaporating the refrigerant decompressed and expanded by the first decompression means (19), and the first evaporator (1
5) Liquid that is provided in parallel with the first low-pressure pipe section (40) for returning the gas refrigerant evaporated in 5) to the compressor (16) and the first depressurizing means (19) and condensed in the condenser (17). A second decompression means (32) for decompressing and expanding the refrigerant and a second evaporator (which is provided in parallel with the first evaporator (15) and evaporates the refrigerant decompressed and expanded by the second decompression means (32) ( 28) and the first low-pressure pipe section (40) in parallel, and the second evaporator (28).
A refrigeration cycle apparatus configured to include a second low-pressure pipe section (34) for returning the gas refrigerant evaporated in (1) to the compressor (16), in which a part of the second low-pressure pipe section (34) can be replaced. The replaceable piping section (4)
1) has pressure loss means (41b, 41c, 42) for causing the predetermined pressure loss, and the pressure loss means (41b, 41c, 42) causes the first evaporator (1)
5) A refrigeration cycle apparatus characterized in that a ratio of cooling capacities of the second evaporator (28) and the second evaporator (28) is varied.
記交換可能配管部（４１）を配管径の小さなものと組み
替えたことを特徴とする請求項１に記載の冷凍サイクル
装置。2. The refrigeration cycle apparatus according to claim 1, wherein, as the pressure loss means (41b), the replaceable pipe part (41) is replaced with a pipe having a small pipe diameter.
交換可能配管部（４１）に絞り部品（４２）を組み込ん
だことを特徴とする請求項１に記載の冷凍サイクル装
置。3. The refrigeration cycle apparatus according to claim 1, wherein a throttle component (42) is incorporated in the replaceable pipe section (41) as the pressure loss means (42).
記交換可能配管部（４１）の一部に絞り形状（４１ｃ）
を形成したことを特徴とする請求項１に記載の冷凍サイ
クル装置。4. The pressure loss means (41c) has a throttle shape (41c) in a part of the replaceable pipe part (41).
The refrigeration cycle apparatus according to claim 1, wherein the refrigeration cycle apparatus is formed.
ット（１２）と、車室内後席側を空調する後席側空調ユ
ニット（２５）と、請求項１ないし請求項４のいずれか
に記載の冷凍サイクル装置とを備え、前記第１蒸発器
（１５）を前記前席側空調ユニット（１２）内の前席側
蒸発器（１５）として配置し、前記第２蒸発器（２８）
を前記後席側空調ユニット（２５）内の後席側蒸発器
（２８）として配置したことを特徴とする車両用空調装
置。5. The front seat side air conditioning unit (12) for air conditioning the front seat side of the vehicle interior, the rear seat side air conditioning unit (25) for air conditioning the rear seat side of the vehicle interior, and any one of claims 1 to 4. The refrigeration cycle device according to claim 2, wherein the first evaporator (15) is arranged as a front seat side evaporator (15) in the front seat side air conditioning unit (12), and the second evaporator (28) is provided. )
Is arranged as a rear seat side evaporator (28) in the rear seat side air conditioning unit (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001372936A JP2003172553A (en) | 2001-12-06 | 2001-12-06 | Refrigerating cycle device and vehicular air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001372936A JP2003172553A (en) | 2001-12-06 | 2001-12-06 | Refrigerating cycle device and vehicular air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003172553A true JP2003172553A (en) | 2003-06-20 |
Family
ID=19181736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001372936A Pending JP2003172553A (en) | 2001-12-06 | 2001-12-06 | Refrigerating cycle device and vehicular air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003172553A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006076539A (en) * | 2004-09-13 | 2006-03-23 | Nissan Motor Co Ltd | Vehicular air-conditioning system |
| WO2006070684A1 (en) * | 2004-12-28 | 2006-07-06 | Daikin Industries, Ltd. | Refrigerating apparatus |
| JP2007183089A (en) * | 2006-01-04 | 2007-07-19 | Valeo Systemes Thermiques | Expansion module for dual-evaporator air conditioning system |
| JP2007240109A (en) * | 2006-03-10 | 2007-09-20 | Denso Corp | Air conditioner |
-
2001
- 2001-12-06 JP JP2001372936A patent/JP2003172553A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006076539A (en) * | 2004-09-13 | 2006-03-23 | Nissan Motor Co Ltd | Vehicular air-conditioning system |
| JP4507778B2 (en) * | 2004-09-13 | 2010-07-21 | 日産自動車株式会社 | Vehicle air conditioning system |
| WO2006070684A1 (en) * | 2004-12-28 | 2006-07-06 | Daikin Industries, Ltd. | Refrigerating apparatus |
| JP2006207991A (en) * | 2004-12-28 | 2006-08-10 | Daikin Ind Ltd | Refrigerating apparatus |
| JP2007183089A (en) * | 2006-01-04 | 2007-07-19 | Valeo Systemes Thermiques | Expansion module for dual-evaporator air conditioning system |
| JP2007240109A (en) * | 2006-03-10 | 2007-09-20 | Denso Corp | Air conditioner |
| JP4736872B2 (en) * | 2006-03-10 | 2011-07-27 | 株式会社デンソー | Air conditioner |
| US7997331B2 (en) | 2006-03-10 | 2011-08-16 | Denso Corporation | Air-conditioning system |
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