JP4042556B2 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
JP4042556B2
JP4042556B2 JP2002360596A JP2002360596A JP4042556B2 JP 4042556 B2 JP4042556 B2 JP 4042556B2 JP 2002360596 A JP2002360596 A JP 2002360596A JP 2002360596 A JP2002360596 A JP 2002360596A JP 4042556 B2 JP4042556 B2 JP 4042556B2
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Prior art keywords
air
heat exchanger
indoor heat
passage
air passage
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JP2004189129A (en
Inventor
久志 植田
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Denso Corp
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Denso Corp
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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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00978—Control systems or circuits characterised by failure of detection or safety means; Diagnostic methods
    • 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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H1/00028—Constructional lay-out of the devices in the vehicle
    • 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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/0015—Temperature regulation
    • B60H2001/00178—Temperature regulation comprising an air passage from the HVAC box to the exterior of the cabin

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

Description

【０００１】
【発明の属する技術分野】
本発明は、空調装置に関するもので、車両用空調装置に適用して有効である。
【０００２】
【従来の技術】
従来の車両用空調装置では、空調ユニット内に導入した室内空気を冷房用熱交換器を迂回させて暖房用熱交換器に導くバイパス通路を有していた（例えば、特許文献１参照）。
【０００３】
【特許文献１】
特開２００１−１０３７号公報
【０００４】
【発明が解決しようとする課題】
ところで、近年、蒸気圧縮式冷凍機用の冷媒としてオゾン層を破壊し難い冷媒が求められており、このオゾン層を破壊し難い冷媒としては、二酸化炭素、炭化水素やプロパン等があるが、これらの冷媒を人間が多量に吸引すると、人体に対して悪影響を及ぼすおそれがある。
【０００５】
そこで、発明者は、図２に示すように、蒸発器３の空気流れ下流側、つまり蒸発器より車室内空気吹出口５〜７側に空気通路を閉塞するシャッタドア１３を設け、蒸発器３より空気流れ下流側であって、シャッタドア１３より空気流れ上流側に排出口１４を開閉する排出ドア１５を設け、かつ、送風機２より送風された空気を蒸発器３を迂回させてヒータ４に導くバイパス通路１７を開閉するバイパスドア１６を設けて、蒸発器３から冷媒が空調ケーシング１内に漏れ出した場合には、シャッタドア１３を閉じて排出口１４及びバイパス通路１７を開いた状態で送風機２を稼動させることにより、ヒータ４に送風して防曇性能を確保しつつ、蒸発器３から漏れ出た冷媒を外部に排出する車両用空調装置を検討した。
【０００６】
しかし、上記検討品では、シャッタドアを必要とするため、部品点数の低減を図ることが難しく、空調装置の製造原価低減を図ることが難しい。
【０００７】
本発明は、上記点に鑑み、第１には、従来と異なる新規な空調装置を提供し、第２には、漏れ出た冷媒を外部に排出可能な空調装置の製造原価低減を図ることを目的とする。
【０００８】
【課題を解決するための手段】
本発明は、上記目的を達成するために、請求項１に記載の発明では、室内に吹き出す空気の通路を構成する空調ケーシング（１）と、空調ケーシング（１）内に収納され、空気と冷媒とを熱交換する第１室内熱交換器（３）と、空調ケーシング（１）内のうち第１室内熱交換器（３）より空気流れ下流側に収納され、空気と熱媒体とを熱交換する第２室内熱交換器（４）と、第１室内熱交換器（３）より空気流れ上流側に設けられ、空気を送風する送風機（２）とを備え、空調ケーシング（１）は、送風機（２）から第１室内熱交換器（３）に至る第１送風通路（８）と、送風機（２）から送風された空気を第１室内熱交換器（３）を迂回させて第１室内熱交換器（３）と第２室内熱交換器（４）との間に導く第２送風通路（１１）とを構成し、空調ケーシング（１）のうち第１送風通路（８）を構成する部位には、第１送風通路（８）内外を連通させて第１送風通路（８）を流れる空気を空調ケーシング（１）外に排出する排出口（９）と、排出口（９）のみを開閉する排出口開閉手段（１０）とが設けられ、空調ケーシング（１）のうち第１送風通路（８）および第２送風通路（１１）の空気流れ上流側の部位には、第１送風通路（８）と第２送風通路（１１）とを切り替え開閉する送風通路開閉手段（１２）が設けられ、空調ケーシング（１）内に冷媒が漏れ出たことを検出したときには、排出口開閉手段（１０）が排出口（９）を開くとともに、送風通路開閉手段（１２）が第２送風通路（１１）側を開き、かつ、第１送風通路（８）側を閉じることによって、送風機（２）から送風された空気が第２送風通路（１１）を通じて第１室内熱交換器（３）と第２室内熱交換器（４）との間に導かれた後に第１室内熱交換器（３）を逆流して排出口（９）から空調ケーシング（１）外に排出されることを特徴とする。
【０００９】
これにより、第２送風通路（１１）から第１室内熱交換器（３）と第２室内熱交換器（４）との間に導かれた空気の一部が第１室内熱交換器（３）より空気流れ上流側、つまり送風機（２）側に流れるので、この空気流れと共に空調ケーシング（１）内に漏れ出た冷媒が排出口（９）から空調ケーシング（１）外、つまり車室外に排出され得る。
【００１０】
したがって、シャッタドアを廃止して空調装置の製造原価低減を図ることができるとともに、空調ケーシング（１）内に漏れ出た冷媒を外部に排出することができる。
【００１１】
請求項２に記載の発明では、第１室内熱交換器（３）を通過した空気の全量が、第２室内熱交換器（４）を通過するように構成されていることを特徴とするものである。
【００１２】
請求項３に記載の発明では、請求項１又は２に記載の空調装置にて構成された車両用空調装置であって、第１室内熱交換器（３）には、冷媒として二酸化炭素が循環し、第２室内熱交換器（４）には、車両で発生した廃熱を回収した冷却液が循環していることを特徴とする。
【００１３】
これにより、シャッタドアを廃止して車両用空調装置の製造原価低減を図ることができるとともに、防曇性能を確保しつつ、第１室内熱交換器（３）から漏れ出た冷媒を外部に排出することができ得る。
【００１４】
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。
【００１５】
【発明の実施の形態】
本実施形態は、本発明に係る空調装置を車両用空調装置に適用したものであって、図１は本実施形態に係る空調装置（空調ユニット）の模式図である。
【００１６】
空調ケーシング１は、室内に吹き出す空気の通路を構成する樹脂製のダクト手段であり、この空調ケーシング１の最上流側には、空気を送風する遠心式の送風機２が設けられている。
【００１７】
そして、空調ケーシング１内のうち送風機２より空気流れ下流側には、空気と冷媒とを熱交換する第１室内熱交換器をなす蒸発器３が収納され、蒸発器３の空気流れ下流側には、空気と熱媒体とを熱交換する第２室内熱交換器をなすヒータ４が収納されている。
【００１８】
ここで、蒸発器３は、減圧された低圧冷媒を蒸発させることにより冷凍能力（吸熱能力）を発揮する蒸気圧縮式冷凍機の低圧側熱交換器であり、ヒータ４は、エンジン冷却水等の車両で発生した廃熱を回収した冷却液を熱源として室内に吹き出す空気を加熱するものである。
【００１９】
なお、本実施形態では、蒸発器３を通過した空気の全量がヒータ４を通過するように構成するとともに、ヒータ４に供給する熱媒体、つまりエンジン冷却水の量を調節してヒータ４の加熱能力を調節して室内に吹き出す空気の温度を制御する、いわゆるリヒート方式を採用している。
【００２０】
また、ヒータ４の空気流れ下流側には、乗員の上半身に向けて空気を吹き出すフェイス吹出口に空気を供給するフェイス開口部５、乗員の下半身に向けて空気を吹き出すフット吹出口に空気を供給するフット開口部６、及び窓ガラスに空気を吹き付けるデフロスタ吹出口に空気を供給するデフロスタ開口部７等が設けられており、各開口部５〜７の連通状態は、吹出モード制御ドア５ａ、６ａ、７ａにより制御されている。
【００２１】
また、送風機２から蒸発器３に至る第１送風通路８を構成するダクト部８ａには、第１送風通路８内外を連通させる排出口９を開閉する排出口開閉手段をなす排出ドア１０が設けられ、送風機２から送風された空気を蒸発器３を迂回させて、ヒータ４の空気流れ上流側に導く第２送風通路１１の送風機２側には、第２送風通路１１と第１送風通路８とを切り替え開閉する送風通路開閉手段をなすバイパスドア１２が設けられている。
【００２２】
次に、本実施形態の特徴的作動及びその効果を述べる。
【００２３】
空調ケーシング１内に冷媒が漏れ出たことを検出したときには、排出ドア１０が排出口９を開くとともに、バイパスドア１２が第２送風通路１１側を開き、かつ、第１送風通路８側を閉じる。
【００２４】
これにより、第２送風通路１１から蒸発器３とヒータ４との間に導かれた空気の一部が蒸発器３より空気流れ上流側、つまり送風機２側に流れるので、この空気流れと共に蒸発器３及び空調ケーシング１内の冷媒配管接続部等から空調ケーシング１内に漏れ出た冷媒が排出口９から空調ケーシング１外、つまり車室外に排出される。
【００２５】
一方、第２送風通路１１から蒸発器３とヒータ４との間に導かれた空気のうちヒータ４側に流れた空気により、加熱されて相対湿度が低下した空気を送風することができるので、防曇性能を確保することができる。
【００２６】
したがって、シャッタドアを廃止して空調装置の製造原価低減を図ることができるとともに、防曇性能を確保しつつ、蒸発器３等から漏れ出た冷媒を外部に排出することができる。
【００２７】
なお、本実施形態では、冷媒として二酸化炭素を用いているので、冷媒が漏れたか否かの判定は、空調ケーシング１内（例えば、蒸発器３とヒータ４との間）に設けた二酸化炭素センサ又は酸素センサ等の冷媒検出手段の検出値に基づいて判定している。
【００２８】
（その他の実施形態）
上述の実施形態では、リヒート式の空調装置であったが、本発明はこれに限定されるものではなく、ヒータ４を迂回する冷風量とヒータ４を通過する風量との風量割合を調節することにより室内に吹き出す空気の温度を調節するエアミックス方式としもよい。
【００２９】
また、上述の実施形態では、本発明を車両用空調装置に適用したが、本発明はこれに限定されるものではなく、例えば据え置き型の空調装置に適用してもよい。
【図面の簡単な説明】
【図１】本発明の実施形態に係る空調装置の模式図である。
【図２】検討品に係る空調装置の模式図である。
【符号の説明】
１…空調ケーシング、２…送風機、３…蒸発器、４…ヒータ、
９…排出口、１０…排出ドア、１１…第２送風通路（バイパス通路）、
１２…バイパスドア。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner and is effective when applied to a vehicle air conditioner.
[0002]
[Prior art]
In conventional air conditioning system, it had a bypass passage leading to a heat exchanger for heating and the indoor air introduced into the air conditioning unit to bypass the cooling heat exchanger (e.g., see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-1037
[Problems to be solved by the invention]
By the way, in recent years, a refrigerant that does not easily destroy the ozone layer is required as a refrigerant for a vapor compression refrigerator, and examples of the refrigerant that does not easily destroy the ozone layer include carbon dioxide, hydrocarbons, and propane. If a large amount of the refrigerant is sucked by a human, there is a risk of adversely affecting the human body.
[0005]
Therefore, as shown in FIG. 2, the inventor provides a shutter door 13 that closes the air passage on the downstream side of the air flow of the evaporator 3, that is, on the side of the vehicle interior air outlets 5 to 7 from the evaporator. A discharge door 15 that opens and closes the discharge port 14 is provided on the downstream side of the air flow and on the upstream side of the air flow from the shutter door 13, and the air blown from the blower 2 is bypassed the evaporator 3 to the heater 4. By providing a bypass door 16 that opens and closes the bypass passage 17 that leads to the refrigerant leaking from the evaporator 3 into the air conditioning casing 1, the shutter door 13 is closed and the discharge port 14 and the bypass passage 17 are opened. The air conditioner for vehicles which exhausts the refrigerant | coolant which leaked from the evaporator 3 outside was examined, operating the air blower 2 and ventilating to the heater 4 and ensuring anti-fogging performance.
[0006]
However, since the examined product requires a shutter door, it is difficult to reduce the number of parts and to reduce the manufacturing cost of the air conditioner.
[0007]
In view of the above points, the present invention firstly provides a novel air conditioner different from the conventional one, and secondly aims to reduce the manufacturing cost of the air conditioner capable of discharging the leaked refrigerant to the outside. Objective.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in the first aspect of the present invention, an air conditioning casing (1) that constitutes a passage of air blown into a room, and the air conditioning casing (1) that are housed in the air and refrigerant The first indoor heat exchanger (3) that exchanges heat between the air and the air conditioning casing (1) is housed downstream of the first indoor heat exchanger (3) in the air flow, and heat exchange is performed between the air and the heat medium. A second indoor heat exchanger (4) and a blower (2) that is provided on the upstream side of the air flow from the first indoor heat exchanger (3) and blows air, and the air conditioning casing (1) is a blower The first air passage (8) extending from (2) to the first indoor heat exchanger (3) and the air blown from the air blower (2) bypass the first indoor heat exchanger (3) to enter the first room heat exchanger (3) and constituting the second air passage (11) leading to between the second indoor heat exchanger (4) , The portion constituting the first air passage of the air conditioner casing (1) (8), the first air passage (8) air-conditioning air flowing through the first air passage by communicating (8) and out the casing (1) outlet you discharged outside (9), the outlet closing means and (10) is provided for opening and closing only the outlet (9), the first air passage (8) of the air conditioner casing (1) and a second A portion of the air passage (11) on the upstream side of the air flow is provided with air passage opening / closing means (12) for switching between the first air passage (8) and the second air passage (11), and the air conditioning casing (1). ) When the refrigerant leaks into the outlet , the outlet opening / closing means (10) opens the outlet (9), and the air passage opening / closing means (12) opens the second air passage (11) side, and, by closing the first air passage (8) side, the blower (2 The air blown from the first indoor heat exchanger (3) after being guided between the first indoor heat exchanger (3) and the second indoor heat exchanger (4) through the second air passage (11). Is discharged out of the air-conditioning casing (1) from the discharge port (9) .
[0009]
Thereby, a part of the air led between the 1st indoor heat exchanger (3) and the 2nd indoor heat exchanger (4) from the 2nd ventilation passage (11) is the 1st indoor heat exchanger (3 ), The refrigerant that has leaked into the air conditioning casing (1) together with the airflow from the discharge port (9) to the outside of the air conditioning casing (1), that is, outside the passenger compartment. Can be discharged.
[0010]
Therefore, the shutter door can be eliminated to reduce the manufacturing cost of the air conditioner, and the refrigerant leaking into the air conditioning casing (1) can be discharged to the outside.
[0011]
In invention of Claim 2, it is comprised so that the whole quantity of the air which passed the 1st indoor heat exchanger (3) may pass a 2nd indoor heat exchanger (4). It is.
[0012]
According to a third aspect of the present invention, there is provided a vehicle air conditioner configured by the air conditioner according to the first or second aspect, wherein carbon dioxide is circulated as a refrigerant in the first indoor heat exchanger (3). The second indoor heat exchanger (4) is characterized in that a coolant that has recovered waste heat generated in the vehicle is circulated.
[0013]
As a result, the shutter door can be eliminated to reduce the manufacturing cost of the vehicle air conditioner, and the refrigerant leaking from the first indoor heat exchanger (3) is discharged to the outside while ensuring the anti-fogging performance. You can get.
[0014]
Incidentally, the reference numerals in parentheses of each means described above are an example showing the correspondence with the specific means described in the embodiments described later.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
In the present embodiment, the air conditioner according to the present invention is applied to a vehicle air conditioner, and FIG. 1 is a schematic diagram of the air conditioner (air conditioner unit) according to the present embodiment.
[0016]
The air-conditioning casing 1 is a resin-made duct means that constitutes a passage for air blown into the room. A centrifugal blower 2 that blows air is provided on the most upstream side of the air-conditioning casing 1.
[0017]
In the air conditioning casing 1, an evaporator 3 constituting a first indoor heat exchanger for exchanging heat between the air and the refrigerant is housed on the downstream side of the air flow from the blower 2. Contains a heater 4 forming a second indoor heat exchanger for exchanging heat between the air and the heat medium.
[0018]
Here, the evaporator 3 is a low-pressure side heat exchanger of a vapor compression refrigerator that exhibits refrigeration capacity (heat absorption capacity) by evaporating the decompressed low-pressure refrigerant, and the heater 4 includes engine cooling water or the like. The air that is blown into the room is heated by using the coolant that has recovered the waste heat generated in the vehicle as a heat source.
[0019]
In the present embodiment, the entire amount of air that has passed through the evaporator 3 is configured to pass through the heater 4, and the amount of heat supplied to the heater 4, that is, the amount of engine cooling water is adjusted to heat the heater 4. A so-called reheat method is used in which the temperature of the air blown into the room is controlled by adjusting the capacity.
[0020]
In addition, on the downstream side of the air flow of the heater 4, air is supplied to a face opening 5 that supplies air to a face outlet that blows air toward the upper half of the occupant, and air is supplied to a foot outlet that blows air toward the lower half of the occupant A defroster opening 7 for supplying air to a defroster outlet for blowing air to the window glass, and the communication state of the openings 5 to 7 are the blowing mode control doors 5a and 6a. , 7a.
[0021]
Further, the duct portion 8a constituting the first air passage 8 extending from the blower 2 to the evaporator 3 is provided with a discharge door 10 serving as a discharge port opening / closing means for opening and closing the discharge port 9 that communicates the inside and outside of the first air passage 8. The second blower passage 11 and the first blower passage 8 are provided on the second blower passage 11 side of the second blower passage 11 that bypasses the air blown from the blower 2 to the evaporator 3 and leads to the upstream side of the air flow of the heater 4. Ba Ipasudoa 12. is provided which forms the air passage opening and closing means for opening and closing switch and.
[0022]
Next, the characteristic operation of this embodiment and its effect will be described.
[0023]
When it is detected that the refrigerant has leaked into the air conditioning casing 1, the discharge door 10 opens the discharge port 9, the bypass door 12 opens the second air passage 11 side, and closes the first air passage 8 side. .
[0024]
As a result, a part of the air guided between the evaporator 3 and the heater 4 from the second air passage 11 flows to the upstream side of the air flow from the evaporator 3, that is, to the blower 2 side. 3 and the refrigerant leaking into the air conditioning casing 1 from the refrigerant pipe connection portion in the air conditioning casing 1 and the like are discharged from the discharge port 9 to the outside of the air conditioning casing 1, that is, outside the passenger compartment.
[0025]
On the other hand, air that has been heated and reduced in relative humidity can be blown by the air that has flowed to the heater 4 side out of the air guided between the evaporator 3 and the heater 4 from the second air passage 11. Anti-fogging performance can be ensured.
[0026]
Therefore, the shutter door can be eliminated to reduce the manufacturing cost of the air conditioner, and the refrigerant leaking from the evaporator 3 and the like can be discharged to the outside while ensuring the antifogging performance.
[0027]
In the present embodiment, since carbon dioxide is used as the refrigerant, whether or not the refrigerant has leaked is determined by a carbon dioxide sensor provided in the air conditioning casing 1 (for example, between the evaporator 3 and the heater 4). Alternatively, the determination is made based on the detection value of the refrigerant detection means such as an oxygen sensor.
[0028]
(Other embodiments)
In the above-described embodiment, the reheat-type air conditioner is used. However, the present invention is not limited to this, and the air volume ratio between the cool air volume bypassing the heater 4 and the air volume passing through the heater 4 is adjusted. It is good also as an air mix system which adjusts the temperature of the air which blows off indoors.
[0029]
In the above-described embodiment, the present invention is applied to a vehicle air conditioner. However, the present invention is not limited to this, and may be applied to, for example, a stationary air conditioner.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of an air conditioner according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of an air conditioner according to a study product.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Air-conditioning casing, 2 ... Blower, 3 ... Evaporator, 4 ... Heater,
9 ... discharge port, 10 ... discharge door, 11 ... second air passage (bypass passage),
12 ... Bypass door.

Claims (3)

室内に吹き出す空気の通路を構成する空調ケーシング（１）と、
前記空調ケーシング（１）内に収納され、空気と冷媒とを熱交換する第１室内熱交換器（３）と、
前記空調ケーシング（１）内のうち前記第１室内熱交換器（３）より空気流れ下流側に収納され、空気と熱媒体とを熱交換する第２室内熱交換器（４）と、
前記第１室内熱交換器（３）より空気流れ上流側に設けられ、空気を送風する送風機（２）とを備え、
前記空調ケーシング（１）は、前記送風機（２）から前記第１室内熱交換器（３）に至る第１送風通路（８）と、前記送風機（２）から送風された空気を前記第１室内熱交換器（３）を迂回させて前記第１室内熱交換器（３）と前記第２室内熱交換器（４）との間に導く第２送風通路（１１）とを構成し、
前記空調ケーシング（１）のうち前記第１送風通路（８）を構成する部位には、前記第１送風通路（８）内外を連通させて前記第１送風通路（８）を流れる空気を前記空調ケーシング（１）外に排出する排出口（９）と、前記排出口（９）のみを開閉する排出口開閉手段（１０）とが設けられ、
前記空調ケーシング（１）のうち前記第１送風通路（８）および前記第２送風通路（１１）の空気流れ上流側の部位には、前記第１送風通路（８）と前記第２送風通路（１１）とを切り替え開閉する送風通路開閉手段（１２）が設けられ、
前記空調ケーシング（１）内に冷媒が漏れ出たことを検出したときには、前記排出口開閉手段（１０）が前記排出口（９）を開くとともに、前記送風通路開閉手段（１２）が前記第２送風通路（１１）側を開き、かつ、前記第１送風通路（８）側を閉じることによって、前記送風機（２）から送風された空気が前記第２送風通路（１１）を通じて前記第１室内熱交換器（３）と前記第２室内熱交換器（４）との間に導かれた後に前記第１室内熱交換器（３）を逆流して前記排出口（９）から前記空調ケーシング（１）外に排出されることを特徴とする空調装置。An air conditioning casing (1) that constitutes a passage of air blown into the room;
A first indoor heat exchanger (3) housed in the air conditioning casing (1) and exchanging heat between the air and the refrigerant;
A second indoor heat exchanger (4) which is housed in the air conditioning casing (1) on the downstream side of the air flow from the first indoor heat exchanger (3) and exchanges heat between the air and the heat medium;
A blower (2) that is provided on the upstream side of the air flow from the first indoor heat exchanger (3) and blows air;
The air conditioning casing (1) includes a first air passage (8) from the blower (2) to the first indoor heat exchanger (3), and air blown from the blower (2). heat exchanger (3) to bypass the constitute a second air passage (11) for guiding between the first indoor heat exchanger (3) and the second indoor heat exchanger (4),
Of the air-conditioning casing (1), air that flows through the first air passage (8) through the first air passage (8) is communicated with the portion constituting the first air passage (8). casing (1) outlet you discharged outside (9), the outlet closing means and (10) is provided for opening and closing only the outlet (9),
Wherein the portion of the air flow upstream side of the first air passage (8) and said second air passage (11), said first air passage (8) the second air passage of said air conditioner casing (1) ( 11) is provided with air passage opening and closing means (12) for switching between and
When it is detected that the refrigerant has leaked into the air conditioning casing (1), the outlet opening / closing means (10) opens the outlet (9) and the air passage opening / closing means (12) is the second. By opening the air passage (11) side and closing the first air passage (8) side, the air blown from the blower (2) passes through the second air passage (11) and the first indoor heat After being led between the exchanger (3) and the second indoor heat exchanger (4), the air-conditioning casing (1) flows back through the first indoor heat exchanger (3) from the outlet (9). ) An air conditioner that is discharged outside . 前記第１室内熱交換器（３）を通過した空気の全量が、前記第２室内熱交換器（４）を通過するように構成されていることを特徴とする請求項１に記載の空調装置。2. The air conditioner according to claim 1, wherein the entire amount of air that has passed through the first indoor heat exchanger (3) passes through the second indoor heat exchanger (4). . 請求項１又は２に記載の空調装置にて構成された車両用空調装置であって、
前記第１室内熱交換器（３）には、冷媒として二酸化炭素が循環し、
前記第２室内熱交換器（４）には、車両で発生した廃熱を回収した冷却液が循環していることを特徴とする車両用空調装置。A vehicle air conditioner configured by the air conditioner according to claim 1 or 2,
Carbon dioxide is circulated as a refrigerant in the first indoor heat exchanger (3),
The vehicle air conditioner is characterized in that the second indoor heat exchanger (4) is circulated with a coolant that has recovered waste heat generated in the vehicle.
JP2002360596A 2002-12-12 2002-12-12 Air conditioner Expired - Fee Related JP4042556B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104566677A (en) * 2013-10-25 2015-04-29 广东美的制冷设备有限公司 Air conditioner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4561530B2 (en) * 2005-08-23 2010-10-13 株式会社デンソー Air conditioner for vehicles
JP2015038390A (en) * 2011-03-30 2015-02-26 パナソニック株式会社 In-vehicle air conditioning device
WO2015058450A1 (en) * 2013-10-25 2015-04-30 广东美的制冷设备有限公司 Air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104566677A (en) * 2013-10-25 2015-04-29 广东美的制冷设备有限公司 Air conditioner
CN104566677B (en) * 2013-10-25 2018-08-17 广东美的制冷设备有限公司 Air conditioner

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