JPH07266839A - Air conditioner for electric car - Google Patents
Air conditioner for electric carInfo
- Publication number
- JPH07266839A JPH07266839A JP6142194A JP6142194A JPH07266839A JP H07266839 A JPH07266839 A JP H07266839A JP 6142194 A JP6142194 A JP 6142194A JP 6142194 A JP6142194 A JP 6142194A JP H07266839 A JPH07266839 A JP H07266839A
- Authority
- JP
- Japan
- Prior art keywords
- air
- temperature
- heat exchanger
- vehicle
- outside
- 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.)
- Granted
Links
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気自動車用空調装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for an electric vehicle.
【０００２】[0002]
【従来の技術】近年、電気自動車の開発に伴って、この
電気自動車に搭載される電気自動車用空調装置にも種々
の発明がなされている。このような電気自動車用空調装
置では、車内を冷房する場合、一般に、冷凍サイクルで
冷媒を循環させることにより、車内側熱交換器で通過す
る空気を冷却して車内に冷風を供給するようにしてい
る。2. Description of the Related Art In recent years, with the development of electric vehicles, various inventions have been made to air conditioners for electric vehicles mounted on the electric vehicles. In such an air conditioner for an electric vehicle, when cooling the inside of the vehicle, generally, by circulating a refrigerant in a refrigeration cycle, the air passing through the heat exchanger inside the vehicle is cooled to supply cold air to the inside of the vehicle. There is.
【０００３】すなわち、前記冷凍サイクルでは、コンプ
レッサの駆動により高温・高圧となった冷媒は、車両前
方部に配設した車外側熱交換器に流入して冷却され、キ
ャピラリーチューブで気化しやすい状態とされ、車内前
方部の空調ユニット内に配設した車内側熱交換器内を通
過する際に気化した後、アキュムレータで液化されてコ
ンプレッサに戻って循環する。そして、前記車内側熱交
換器で冷媒が気化する際に通過する内気又は外気から気
化熱を奪うことにより車内に冷風を送風できるようにな
っている。That is, in the refrigeration cycle, the refrigerant that has become high temperature and high pressure due to the driving of the compressor flows into the outside heat exchanger arranged in the front part of the vehicle, is cooled, and is easily vaporized in the capillary tube. After being vaporized when passing through the heat exchanger inside the vehicle arranged in the air conditioning unit at the front of the vehicle, it is liquefied by the accumulator and returned to the compressor for circulation. Then, by taking heat of vaporization from inside air or outside air that passes when the refrigerant vaporizes in the vehicle interior heat exchanger, cold air can be blown into the vehicle interior.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来提
案されている電気自動車用空調装置では、駐車時の日射
の有無によって車内外温度の上下関係が異なるため、例
えば、夏場の冷房運転開始直後に内気循環モードを選択
していれば、車内側熱交換器には外気に比べてかなり高
温の内気が通過することになり、冷却が十分に行われな
い。However, in the conventionally proposed air conditioners for electric vehicles, since the upper and lower temperatures of the inside and outside of the vehicle differ depending on the presence or absence of solar radiation during parking, for example, the inside air temperature immediately after the start of the cooling operation in the summer. If the circulation mode is selected, the inside air, which is considerably hotter than the outside air, passes through the heat exchanger inside the vehicle, and the cooling is not sufficiently performed.
【０００５】この場合、冷媒自体の温度も非常に上昇し
ているため、車内側熱交換器で気化した冷媒が過熱状態
となってコンプレッサ内に流入する結果、コンプレッサ
が異常過熱状態（過負荷状態）となり故障に至る可能性
が高くなるという問題がある。本発明は前記問題点に鑑
み、コンプレッサの故障を防止しつつ適切な車内空調を
行なうことのできる電気自動車用空調装置を提供するこ
とを目的とする。In this case, since the temperature of the refrigerant itself is also extremely high, the refrigerant vaporized in the vehicle interior heat exchanger becomes overheated and flows into the compressor. As a result, the compressor is abnormally overheated (overloaded state). There is a problem that there is a high possibility that a failure will occur. The present invention has been made in view of the above problems, and an object thereof is to provide an air conditioner for an electric vehicle capable of performing appropriate vehicle air conditioning while preventing a compressor failure.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するた
め、請求項１に記載の発明では、コンプレッサを駆動し
て熱交換媒体を車外側熱交換器、車内側熱交換器の順で
循環させることにより、車内側熱交換器を通過する空気
を冷却して車内に冷風を供給するようにした電気自動車
用空調装置において、車外温度を検出する車外側温度検
出センサと、車内温度を検出する車内側温度検出センサ
と、両センサによって検出される温度を比較して、車外
温度の方が高い場合には内気循環モードに切り替え、低
い場合には外気導入モードに切り替える内外気モード切
替制御手段とを設けたものである。In order to achieve the above object, in the invention described in claim 1, the compressor is driven to circulate the heat exchange medium in the order of the outside heat exchanger and the inside heat exchanger. As a result, in an air conditioner for an electric vehicle that cools the air passing through the heat exchanger on the inside of the vehicle to supply cool air to the inside of the vehicle, a vehicle outside temperature detection sensor that detects the vehicle outside temperature and a vehicle outside temperature detection sensor that detects the vehicle inside temperature. The inside temperature detection sensor and the temperature detected by the both sensors are compared, and when the outside temperature is higher, the inside air circulation mode is switched to, and when the outside temperature is lower, the inside and outside air mode switching control means is switched to the outside air introduction mode. It is provided.
【０００７】請求項２に記載の発明では、コンプレッサ
を駆動して熱交換媒体を車外側熱交換器、車内側熱交換
器の順で循環させることにより、車内側熱交換器を通過
する空気を冷却して車内に冷風を供給するようにした電
気自動車用空調装置において、冷房運転開始直後、車外
温度を検出する車外側温度検出センサと、車内側熱交換
器の近傍温度を検出する車内熱交温度検出センサと、両
センサによって検出される温度を比較して、車外温度の
方が高い場合には内気循環モードに切り替え、低い場合
には外気導入モードに切り替える内外気モード切替制御
手段とを設けたものである。According to the second aspect of the invention, the compressor is driven to circulate the heat exchange medium in the order of the outside heat exchanger and the inside heat exchanger, so that the air passing through the inside heat exchanger is passed through. In an air conditioner for an electric vehicle that has been cooled to supply cool air to the inside of the vehicle, immediately after the start of cooling operation, an outside temperature detection sensor that detects the outside temperature and an inside heat exchanger that detects the temperature near the inside heat exchanger. The temperature detection sensor and the temperature detected by the both sensors are compared, and when the outside temperature is higher, the inside air circulation mode is switched to, and when the outside temperature is lower, the inside and outside air mode switching control means is switched to the outside air introduction mode. It is a thing.
【０００８】請求項３に記載の発明では、前記車内側熱
交換器の近傍温度が所定値以上であれば、コンプレッサ
の設定駆動周波数を上方修正するコンプレッサ駆動制御
手段を設けたものである。According to the third aspect of the present invention, the compressor drive control means is provided for upwardly correcting the set drive frequency of the compressor when the temperature in the vicinity of the heat exchanger inside the vehicle is a predetermined value or more.
【０００９】[0009]
【作用】請求項１又は２に記載の発明の構成によれば、
内外気モード切替手段は、車外側温度検出センサと、車
内側熱交換器センサ又は車内側温度検出センサとの検出
温度を読み込み、内気又は外気のうち、温度の低い方を
取り入れて車内側熱交換器を通過させる。According to the configuration of the invention described in claim 1 or 2,
The inside / outside air mode switching means reads the detection temperatures of the outside temperature detection sensor and the inside heat exchanger sensor or the inside temperature detection sensor, and takes in the lower temperature of the inside air or the outside air and exchanges heat inside the vehicle. Pass the vessel.
【００１０】請求項３に記載の発明の構成によれば、コ
ンプレッサ駆動制御手段は、車内側熱交換器の近傍温度
が高ければ、コンプレッサの駆動周波数を上方に修正
し、熱交換媒体の循環量を増大させ、車内側熱交換器で
の吸熱量を大きくする。According to the third aspect of the present invention, the compressor drive control means corrects the drive frequency of the compressor upward if the temperature in the vicinity of the heat exchanger inside the vehicle is high, and circulates the heat exchange medium. To increase the amount of heat absorbed by the heat exchanger inside the vehicle.
【００１１】[0011]
【実施例】以下、本発明の実施例を添付図面に従って説
明する。図１は電気自動車用空調装置の概略図を示し、
車内前方部に配設される空調ユニット１内には上流側か
ら内外気切替ダンパ２、ブロアファン３、車内側熱交換
器４が順次配設され、最下流部では車内の所定位置に開
口するヒート、ベント及びデフ吹出口５，６及び７をそ
れぞれ開閉するヒート、ベント及びデフ切替ダンパ５
ａ，６ａ及び７ａがそれぞれ回動可能に設けられてい
る。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a schematic diagram of an air conditioner for an electric vehicle,
An inside / outside air switching damper 2, a blower fan 3, and a heat exchanger 4 inside the vehicle are sequentially arranged from the upstream side in the air conditioning unit 1 arranged in the front portion of the vehicle interior, and open at a predetermined position in the vehicle at the most downstream portion. Heat, vent and differential switching damper 5 for opening and closing the heat, vent and differential outlets 5, 6 and 7, respectively.
a, 6a, and 7a are rotatably provided.
【００１２】前記内外気切替ダンパ２はアクチュエータ
２ａの駆動により開閉して内気循環口１ａ又は外気導入
口１ｂのいずれか一方を閉塞するようになっており、ア
クチュエータ２ａの駆動は内外気切替制御装置８からの
信号により制御されている。The inside / outside air switching damper 2 is opened and closed by driving an actuator 2a to close either the inside air circulation port 1a or the outside air introduction port 1b. The actuator 2a is driven by an inside / outside air switching control device. It is controlled by the signal from 8.
【００１３】内外気切替制御装置８には、外気導入流路
途中に配設した車外側温度検出センサ９、車内前方部に
設けた車内側温度検出センサ１０及び車内側熱交換器４
に設けた車内側熱交換器センサ１１からそれぞれ検出温
度が入力されている。各センサ９，１０及び１１にはサ
ーミスタが使用できる。前記ブロアファン３はブロアモ
ータ３ａの駆動により回転し、内気又は外気を空調ユニ
ット１内に吸引して所定の吹出口５，６又は７より車内
に送風する。The inside / outside air switching control device 8 includes an outside temperature detecting sensor 9 arranged in the outside air introducing passage, an inside temperature detecting sensor 10 provided in a front part of the inside of the vehicle, and an inside heat exchanger 4.
The detected temperatures are input from the in-vehicle heat exchanger sensor 11 provided in the vehicle. A thermistor can be used for each sensor 9, 10 and 11. The blower fan 3 is rotated by the drive of the blower motor 3a, sucks the inside air or the outside air into the air conditioning unit 1, and blows the air into the vehicle through a predetermined outlet 5, 6, or 7.
【００１４】前記車内側熱交換器４には熱交換媒体が循
環して通過する空気を冷却又は加熱する。熱交換媒体
は、四方弁１２の切替えにより図１中実線で示す暖房サ
イクルＨと、点線で示す冷房サイクルＣとを循環するよ
うになっている。A heat exchange medium is circulated in the vehicle interior heat exchanger 4 to cool or heat air passing therethrough. The heat exchange medium circulates through a heating cycle H shown by a solid line in FIG. 1 and a cooling cycle C shown by a dotted line by switching the four-way valve 12.
【００１５】すなわち、暖房サイクルＨでは、コンプレ
ッサ１３を駆動することにより、四方弁１２、車内側熱
交換器４、流量調整弁１４、車外側熱交換器１５、四方
弁１２及びアキュムレータ１６を介してコンプレッサ１
３に戻って循環する。また、冷房サイクルＣでは、四方
弁１２、車外側熱交換器１５、流量調整弁１４、車内側
熱交換器４、四方弁１２及びアキュムレータ１６を介し
てコンプレッサ１３に戻って循環する。That is, in the heating cycle H, by driving the compressor 13, the four-way valve 12, the vehicle interior heat exchanger 4, the flow rate adjusting valve 14, the vehicle exterior heat exchanger 15, the four-way valve 12 and the accumulator 16 are passed. Compressor 1
Return to 3 and cycle. Further, in the cooling cycle C, the air is returned to the compressor 13 through the four-way valve 12, the vehicle exterior heat exchanger 15, the flow rate adjusting valve 14, the vehicle interior heat exchanger 4, the four-way valve 12 and the accumulator 16 and circulates.
【００１６】前記車内側熱交換器４は、偏平管とフィン
とを交互に積層し、両側にヘッダを配設した構成で、熱
交換媒体はヘッダから各偏平管を蛇行しながら流動する
ようになっており、前記車外側熱交換器１５もほぼ同様
な構成である。The inside heat exchanger 4 has a structure in which flat tubes and fins are alternately laminated, and headers are arranged on both sides. The heat exchange medium flows from the header while meandering through the flat tubes. The outer heat exchanger 15 has a similar structure.
【００１７】前記四方弁１２は、内部を回転する円柱体
に穿設した一対の通路を、円柱体を回転させて実線又は
点線のいずれか一方に位置決めする構成のものである。
前記コンプレッサ１３は、インバータ１３ａからの運転
周波数の変化により回転数が調整され、熱交換媒体を高
温・高圧状態として吐出させる。前記アキュムレータ１
６は気化できなかった熱交換媒体をコンプレッサ１３へ
送らないための気液分流装置であり、従来周知のものが
使用される。The four-way valve 12 has a structure in which a pair of passages bored in a columnar body that rotates inside are positioned in either a solid line or a dotted line by rotating the columnar body.
The compressor 13 has its rotation speed adjusted by a change in operating frequency from the inverter 13a, and discharges the heat exchange medium in a high temperature / high pressure state. The accumulator 1
Reference numeral 6 denotes a gas-liquid dividing device for preventing the heat exchange medium that could not be vaporized from being sent to the compressor 13, and a conventionally known device is used.
【００１８】前記流量調整弁１４は、モータ１４ａの駆
動により流通路の開度が変化するもので、モータ１４ａ
は流量制御装置１７からの信号により駆動制御される。
流量制御装置１７には前記内外気切替制御装置８から前
記各センサ９，１０及び１１からの検出温度情報が入力
されるようになっている。The flow rate adjusting valve 14 changes the opening of the flow passage by driving the motor 14a.
Is controlled by a signal from the flow controller 17.
The detected temperature information from each of the sensors 9, 10 and 11 is input to the flow rate control device 17 from the inside / outside air switching control device 8.
【００１９】（第１実施例）第１実施例では、図２に示
すフローチャートに従って冷房運転開始直後の空調制御
を行なう。すなわち、ステップＳ１で冷房運転が開始さ
れれば、ステップＳ２で車外温度を読み込み、ステップ
Ｓ３で車内温度を読み込む。そして、ステップＳ４で車
外温度と車内温度とを比較し、車外温度が高ければステ
ップＳ５で内気循環モードに切り替え、低ければステッ
プＳ６で外気導入モードに切り替える。(First Embodiment) In the first embodiment, air conditioning control is performed immediately after the start of the cooling operation according to the flow chart shown in FIG. That is, if the cooling operation is started in step S1, the outside temperature is read in step S2, and the inside temperature is read in step S3. Then, in step S4, the outside temperature and the inside temperature are compared. If the outside temperature is high, the inside air circulation mode is switched to in step S5, and if the outside temperature is low, the outside air introduction mode is switched to in step S6.
【００２０】このように、第１実施例によれば、車外温
度と車内温度とを比較して温度の低い方の空気を車内側
熱交換器４に供給することができる。この結果、車内側
熱交換器４で熱交換媒体が過熱されることが防止され、
過熱された熱交換媒体がアキュムレータ１６で液化しき
れずにコンプレッサ１３内に流入することはない。As described above, according to the first embodiment, it is possible to compare the temperature outside the vehicle and the temperature inside the vehicle and supply the air having the lower temperature to the heat exchanger 4 inside the vehicle. As a result, the heat exchange medium is prevented from being overheated in the vehicle interior heat exchanger 4,
The overheated heat exchange medium will not flow into the compressor 13 without being completely liquefied by the accumulator 16.
【００２１】（第２実施例）第２実施例では、図３に示
すフローチャートに従って冷房運転開始直後の空調制御
を行なう。すなわち、まず、ステップＳ１１で冷房運転
が開始されれば、ステップＳ１２で車外側温度検出セン
サ９から入力される車外温度を読み込み、ステップＳ１
３で車内側熱交換器センサ１１から入力される車内側熱
交換器４の近傍温度を読み込む。(Second Embodiment) In the second embodiment, air conditioning control is performed immediately after the start of the cooling operation according to the flow chart shown in FIG. That is, first, if the cooling operation is started in step S11, the vehicle exterior temperature input from the vehicle exterior temperature detection sensor 9 is read in step S12, and step S1
At 3, the temperature near the vehicle interior heat exchanger 4 input from the vehicle interior heat exchanger sensor 11 is read.
【００２２】次に、ステップＳ１４で前記両センサ９，
１１で検出された温度を比較して車外温度の方が高い場
合にはステップＳ１５に、低い場合にはステップＳ１６
にそれぞれ移行する。車内側熱交換器４に温度の低い空
気を通過させるべく、ステップＳ１５では外気導入モー
ドに、ステップＳ１６では内気循環モードにそれぞれ切
り替える。そして、ステップＳ１７でコンプレッサ１３
を駆動することにより冷房運転を開始する。Next, in step S14, both sensors 9,
If the outside temperature is higher than the temperatures detected in step 11, the process goes to step S15, and if the outside temperature is low, the process goes to step S16.
Move to each. In order to allow the air having a low temperature to pass through the heat exchanger 4 inside the vehicle, the outside air introduction mode is switched to in step S15, and the inside air circulation mode is switched to in step S16. Then, in step S17, the compressor 13
The cooling operation is started by driving.
【００２３】続いて、ステップＳ１８で、再び内気循環
モードであるかどうかを判断する。これは、前記ステッ
プＳ１５で外気導入モードに切り替わっていても乗員の
操作により内気循環モードに切り替わっていることがあ
るためである。内気循環モードであれば、冷房運転開始
直後の空調制御を終了して通常の空調制御に移行する。Subsequently, in step S18, it is again determined whether the internal air circulation mode is set. This is because even if the mode is switched to the outside air introduction mode in step S15, the passenger may operate the mode to switch to the inside air circulation mode. If it is the inside air circulation mode, the air conditioning control immediately after the start of the cooling operation is terminated and the normal air conditioning control is performed.
【００２４】また、内気循環モードでなければ、再び、
ステップＳ１９で車外温度を、ステップＳ２０で車内熱
交温度をそれぞれ読み込み、ステップＳ２１で両者の温
度差が所定値ａ（例えば、ａ＝１５ｄｅｇ）よりも大き
くなったかどうかを判断する。このように、所定値ａを
考慮するようにしたのは、車内側熱交換器４が熱交換媒
体の流動によりかなり冷却されるので、車内側熱交換器
センサ１１がその影響を受けやすく、検出される温度が
車内側熱交換器４を通過する空気温度よりも低くなるた
めである。そして、温度差が所定値ａよりも大きくなれ
ば、ステップＳ２２で内気循環モードに切り替え、以
下、通常の空調制御に移行する。If it is not the internal air circulation mode,
The outside temperature is read in step S19 and the inside heat exchange temperature is read in step S20, and it is determined in step S21 whether or not the temperature difference between the two has become larger than a predetermined value a (for example, a = 15 deg). In this way, the reason why the predetermined value a is taken into consideration is that the heat exchanger 4 inside the vehicle is considerably cooled by the flow of the heat exchange medium, so that the heat exchanger sensor 11 inside the vehicle is easily influenced by the heat exchanger 4 and is detected. This is because the temperature to be set becomes lower than the temperature of the air passing through the heat exchanger 4 inside the vehicle. Then, if the temperature difference becomes larger than the predetermined value a, in step S22, the mode is switched to the inside air circulation mode, and then the normal air conditioning control is performed.
【００２５】このように、前記第２実施例によっても、
前記第１実施例と同様に、より温度の低い空気を車内熱
交換器に通過させることにより、熱交換媒体が過熱状態
になることを防止できる。As described above, according to the second embodiment as well,
As in the case of the first embodiment, it is possible to prevent the heat exchange medium from becoming overheated by passing the air having a lower temperature through the in-vehicle heat exchanger.
【００２６】（第３実施例）第３実施例では、車内側熱
交換器４に、内気又は外気のうち、より温度の低い方を
供給することに加えて、車内側熱交換器４へ流入する熱
交換媒体の流量を増加させることにより、熱交換媒体の
過熱状態を回避するようにしたものである。(Third Embodiment) In the third embodiment, in addition to supplying either the inside air or the outside air, which has a lower temperature, to the inside heat exchanger 4, the inside heat exchanger 4 flows into the inside heat exchanger 4. By increasing the flow rate of the heat exchange medium, the overheated state of the heat exchange medium is avoided.
【００２７】すなわち、図示しないコンプレッサ制御装
置により、図３のフローチャートに従ってコンプレッサ
１３の駆動制御を行なう。まず、ステップＳ３１で、車
内側熱交換器４の近傍温度が所定温度（例えば、２０
℃）以上であるかどうかを判断する。そして、所定温度
未満であれば、コンプレッサ１３を通常の駆動周波数
（例えば、９０Ｈｚ）で駆動し、所定温度以上であれ
ば、さらに高い駆動周波数（例えば、１００Ｈｚ）に修
正する。この制御は、例えば、前記第２実施例では、ス
テップＳ１７の直前に行わせるようにすればよい。That is, the drive control of the compressor 13 is performed by the compressor control device (not shown) according to the flowchart of FIG. First, in step S31, the temperature in the vicinity of the heat exchanger 4 inside the vehicle is set to a predetermined temperature (for example, 20
C)) or more. Then, if it is lower than the predetermined temperature, the compressor 13 is driven at a normal drive frequency (for example, 90 Hz), and if it is higher than the predetermined temperature, it is corrected to a higher drive frequency (for example, 100 Hz). In the second embodiment, this control may be performed immediately before step S17, for example.
【００２８】このように、第３実施例によれば、車内側
熱交換器４の近傍温度が所定温度よりも高く、内部を流
動する熱交換媒体が過熱状態になりやすければ、コンプ
レッサ１３の駆動周波数を上昇させて車内側熱交換器４
での熱交換媒体の流動量を増大させて熱交換性能を高め
るようにしたので、熱交換媒体が過熱状態のままでコン
プレッサ１３に流入することが回避できる。As described above, according to the third embodiment, if the temperature in the vicinity of the heat exchanger 4 inside the vehicle is higher than a predetermined temperature and the heat exchange medium flowing inside is likely to be overheated, the compressor 13 is driven. Increase the frequency and heat exchanger 4 inside the car
Since the flow rate of the heat exchange medium is increased to improve the heat exchange performance, it is possible to prevent the heat exchange medium from flowing into the compressor 13 in the overheated state.
【００２９】なお、第３実施例では、コンプレッサ１３
の駆動制御を、車内側熱交換器４の近傍温度が所定温度
よりも高いかどうかで行ったが、検出温度の応じて無段
階で行ったり、設定温度を複数設けて多段階で行なうよ
うにしてもよい。また、第３実施例では、コンプレッサ
１３の駆動制御を車内側熱交換器４の近傍温度に基づい
て行なうようにしたが、単純に、外気導入モードに切り
替わったか否かを検出することにより行なうようにして
もよい。すなわち、冷房運転開始直後、前記第１又は第
２実施例の空調制御により外気導入モードに切り替われ
ば、コンプレッサ１３の駆動周波数を上方に修正する。In the third embodiment, the compressor 13
Was controlled depending on whether the temperature in the vicinity of the heat exchanger 4 inside the vehicle is higher than a predetermined temperature. However, it may be controlled steplessly according to the detected temperature, or may be set in multiple steps by providing a plurality of set temperatures. May be. Further, in the third embodiment, the drive control of the compressor 13 is performed based on the temperature in the vicinity of the vehicle interior heat exchanger 4, but it may be performed by simply detecting whether or not the mode has been switched to the outside air introduction mode. You may That is, immediately after the start of the cooling operation, if the mode is switched to the outside air introduction mode by the air conditioning control of the first or second embodiment, the drive frequency of the compressor 13 is corrected upward.
【００３０】[0030]
【発明の効果】以上の説明から明らかなように、請求項
１又は２に記載の発明によれば、冷房開始直後、車外温
度と車内温度又は車内側熱交換器の近傍温度とを比較し
て内気循環モード又は外気導入モードを選択することに
より、より温度の低い空気を車内側熱交換器に供給でき
るようにしたので、車内側熱交換器内を流動する熱交換
媒体が過熱状態となってコンプレッサ内に流入すること
を阻止でき、このコンプレッサが故障に至ることを防止
可能となる。As is apparent from the above description, according to the invention described in claim 1 or 2, the temperature outside the vehicle is compared with the temperature inside the vehicle or the temperature in the vicinity of the heat exchanger inside the vehicle immediately after the start of cooling. By selecting the inside air circulation mode or the outside air introduction mode, the air with a lower temperature can be supplied to the inside heat exchanger, so that the heat exchange medium flowing in the inside heat exchanger becomes overheated. It is possible to prevent the inflow into the compressor and prevent the compressor from being damaged.
【００３１】また、請求項３に記載の発明によれば、車
内側熱交換器の近傍温度が所定値以上であれば、コンプ
レッサの駆動周波数を上方修正して車内側熱交換器での
熱交換能力を向上させるようにしたので、前述のよう
に、温度の低い方の空気を車内側熱交換器に通過させる
ことと相俟って、さらに効果的に熱交換媒体が過熱状態
のままでコンプレッサに流入することを阻止して、その
故障を防止可能である。According to the third aspect of the present invention, if the temperature in the vicinity of the heat exchanger inside the vehicle is equal to or higher than a predetermined value, the drive frequency of the compressor is adjusted upward and the heat exchange in the heat exchanger inside the vehicle is performed. Since the capacity has been improved, as described above, in combination with passing the cooler air through the heat exchanger on the inside of the vehicle, the compressor can be more effectively operated while the heat exchange medium remains superheated. It is possible to prevent the failure by blocking the inflow to the.
【図１】 本実施例に係る電気自動車用空調装置の概略
図である。FIG. 1 is a schematic diagram of an air conditioner for an electric vehicle according to an embodiment.
【図２】 第１実施例に係る空調制御を示すフローチャ
ートである。FIG. 2 is a flowchart showing air conditioning control according to the first embodiment.
【図３】 第２実施例に係る空調制御を示すフローチャ
ートである。FIG. 3 is a flowchart showing air conditioning control according to a second embodiment.
【図４】 第３実施例に係る空調制御を示すフローチャ
ートである。FIG. 4 is a flowchart showing air conditioning control according to a third embodiment.
２…内外気切替ダンパ、４…車内側熱交換器、８…内外
気切替制御装置、９…車外側温度検出センサ、１０…車
内側温度検出センサ、１１…車内側熱交換器センサ、１
３…コンプレッサ、１４…流量調整弁、１５…車外側熱
交換器。2 ... Inside / outside air switching damper, 4 ... Inside heat exchanger, 8 ... Inside / outside air switching control device, 9 ... Outside temperature detection sensor, 10 ... Inside temperature detection sensor, 11 ... Inside heat exchanger sensor, 1
3 ... Compressor, 14 ... Flow control valve, 15 ... Exterior heat exchanger.
Claims (3)
外側熱交換器、車内側熱交換器の順で循環させることに
より、車内側熱交換器を通過する空気を冷却して車内に
冷風を供給するようにした電気自動車用空調装置におい
て、 車外温度を検出する車外側温度検出センサと、車内温度
を検出する車内側温度検出センサと、両センサによって
検出される温度を比較して、車外温度の方が高い場合に
は内気循環モードに切り替え、低い場合には外気導入モ
ードに切り替える内外気モード切替制御手段とを設けた
ことを特徴とする電気自動車用空調装置。1. A compressor is driven to circulate a heat exchange medium in the order of an exterior heat exchanger and an interior heat exchanger, thereby cooling the air passing through the interior heat exchanger to generate cool air in the interior of the vehicle. In the air-conditioning system for electric vehicles that is supplied, the outside temperature is detected by comparing the outside temperature detection sensor that detects the outside temperature with the inside temperature detection sensor that detects the inside temperature. An air conditioner for an electric vehicle, comprising: an inside air / outside air mode switching control means for switching to the inside air circulation mode when it is higher, and for switching to the outside air introduction mode when it is lower.
外側熱交換器、車内側熱交換器の順で循環させることに
より、車内側熱交換器を通過する空気を冷却して車内に
冷風を供給するようにした電気自動車用空調装置におい
て、 車外温度を検出する車外側温度検出センサと、車内側熱
交換器の近傍温度を検出する車内熱交温度検出センサ
と、冷房運転開始直後、両センサによって検出される温
度を比較して、車外温度の方が高い場合には内気循環モ
ードに切り替え、低い場合には外気導入モードに切り替
える内外気モード切替制御手段とを設けたことを特徴と
する電気自動車用空調装置。2. A compressor is driven to circulate a heat exchange medium in the order of an exterior heat exchanger and an interior heat exchanger, thereby cooling the air passing through the interior heat exchanger to generate cool air in the interior of the vehicle. In an electric vehicle air conditioner that is supplied, an outside temperature detection sensor that detects the outside temperature, an inside heat exchange temperature detection sensor that detects the temperature near the inside heat exchanger, and both sensors immediately after the start of cooling operation. By comparing the temperatures detected by the internal / external air mode switching control means for switching to the internal air circulation mode when the vehicle exterior temperature is higher and switching to the external air introduction mode when the vehicle exterior temperature is low Automotive air conditioner.
以上であれば、コンプレッサの設定駆動周波数を上方修
正するコンプレッサ駆動制御手段を設けたことを特徴と
する請求項１又は２のいずれか一方に記載の電気自動車
用空調装置。3. The compressor drive control means for upwardly correcting the set drive frequency of the compressor when the temperature in the vicinity of the heat exchanger inside the vehicle is a predetermined value or more, and either one of claims 1 and 2 is provided. An air conditioner for an electric vehicle according to either one of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06142194A JP3501839B2 (en) | 1994-03-30 | 1994-03-30 | Electric vehicle air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06142194A JP3501839B2 (en) | 1994-03-30 | 1994-03-30 | Electric vehicle air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07266839A true JPH07266839A (en) | 1995-10-17 |
| JP3501839B2 JP3501839B2 (en) | 2004-03-02 |
Family
ID=13170621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06142194A Expired - Fee Related JP3501839B2 (en) | 1994-03-30 | 1994-03-30 | Electric vehicle air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3501839B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09277816A (en) * | 1995-12-22 | 1997-10-28 | Valeo Climatisation | Air conditioner, in particular suitable for automobile |
| KR100613713B1 (en) * | 2004-09-15 | 2006-08-21 | 현대모비스 주식회사 | Method for controlling automatic ventilation of automobile inside |
-
1994
- 1994-03-30 JP JP06142194A patent/JP3501839B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09277816A (en) * | 1995-12-22 | 1997-10-28 | Valeo Climatisation | Air conditioner, in particular suitable for automobile |
| KR100613713B1 (en) * | 2004-09-15 | 2006-08-21 | 현대모비스 주식회사 | Method for controlling automatic ventilation of automobile inside |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3501839B2 (en) | 2004-03-02 |
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