JPH07205646A - Heat pump type air conditioner for vehicle - Google Patents
Heat pump type air conditioner for vehicleInfo
- Publication number
- JPH07205646A JPH07205646A JP6006916A JP691694A JPH07205646A JP H07205646 A JPH07205646 A JP H07205646A JP 6006916 A JP6006916 A JP 6006916A JP 691694 A JP691694 A JP 691694A JP H07205646 A JPH07205646 A JP H07205646A
- Authority
- JP
- Japan
- Prior art keywords
- defrosting
- vehicle
- electric heater
- speed
- air conditioner
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H2001/00961—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising means for defrosting outside heat exchangers
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は鉄道車両他、種々の車両
に設置される車両用ヒートポンプ式空調装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump type air conditioner for a vehicle installed on various vehicles such as railroad vehicles.
【０００２】[0002]
【従来の技術】従来の車両用ヒートポンプ式空調装置の
一例が図６及び図７に示されている。図６の系統図に示
すように、室外ユニット１に室内ユニット２０が往復の
冷媒配管によって接続されている。2. Description of the Related Art An example of a conventional vehicle heat pump type air conditioner is shown in FIGS. As shown in the system diagram of FIG. 6, an indoor unit 20 is connected to the outdoor unit 1 by a reciprocating refrigerant pipe.
【０００３】室外ユニット１は室外送風機用のモータ
２、室外送風機３、室外熱交換器４、圧縮機７、四方切
換弁８、絞り９等を備えている。室内ユニット２０は室
内熱交換器２１、絞り２２等を備えている。The outdoor unit 1 comprises a motor 2 for an outdoor blower, an outdoor blower 3, an outdoor heat exchanger 4, a compressor 7, a four-way switching valve 8 and a throttle 9. The indoor unit 20 includes an indoor heat exchanger 21, a throttle 22 and the like.
【０００４】図７は上記従来例の室外ユニット１の構成
を示す、やや、実体的な側断面図である。FIG. 7 is a slightly substantial side sectional view showing the construction of the outdoor unit 1 of the above conventional example.
【０００５】室外ユニット１は、鉄道車両等の屋根１０
０上に設置される。モータ２により室外送風機３が回転
すると外気取入口の吸込グリル５より屋外空気が導入さ
れ、室外熱交換器４を通って矢印のように排出される。The outdoor unit 1 includes a roof 10 of a railway vehicle or the like.
It is installed on 0. When the outdoor blower 3 is rotated by the motor 2, the outdoor air is introduced from the suction grill 5 at the outdoor air intake, and is discharged through the outdoor heat exchanger 4 as shown by the arrow.
【０００６】この空調装置を暖房運転すると圧縮機７か
ら吐出されたガス冷媒は４方切換弁８を経て室内熱交換
器２１に入りここで車両室内空気を加熱することにより
凝縮液化する。この液化冷媒は室内ユニット２０の逆止
弁２３を経て室外ユニット１の絞り９に入り、ここで断
熱膨張して、低温の気液二相の冷媒となる。この冷媒は
室外熱交換器４に入り、ここで外気を冷却し、蒸発気化
する。そしてこのガス冷媒は圧縮機７に戻る。これが暖
房サイクルの冷媒の流れであり、図６に実線矢印で示
す。破線矢印は冷房サイクルの冷媒流れを示し、これの
説明は省略する。なお、１０は逆止弁である。When this air conditioner is operated for heating, the gas refrigerant discharged from the compressor 7 enters the indoor heat exchanger 21 through the four-way switching valve 8 and condenses into liquid by heating the vehicle interior air. The liquefied refrigerant passes through the check valve 23 of the indoor unit 20 and enters the throttle 9 of the outdoor unit 1, where it adiabatically expands to become a low-temperature gas-liquid two-phase refrigerant. This refrigerant enters the outdoor heat exchanger 4, where the outside air is cooled and vaporized. Then, this gas refrigerant returns to the compressor 7. This is the flow of the refrigerant in the heating cycle and is shown by the solid line arrow in FIG. The dashed arrow indicates the refrigerant flow in the cooling cycle, and the description thereof is omitted. In addition, 10 is a check valve.
【０００７】室外熱交換器４の出口冷媒配管には冷媒温
度センサ５１が取り付けられ室外ユニット１の適当な箇
所に外気温度センサ５２が取付けられている。室外ユニ
ット１にはマイクロコンピュータとその周辺回路から成
る除霜コントローラ５０が内蔵されており、両センサ５
１及び５２の検出値は除霜コントローラ５０内の除霜決
定手段５３に入力される。ここでこの２つの検出値から
室外熱交換器４が着霜条件にあるかどうか判断し、暖房
運転からデフロスト運転への切換えを決定する。この決
定は出力手段５４を経て、４方切換弁８に出力され、４
方切換弁８を冷房サイクル位置に切換える。又この決定
は出力手段５５を経て室外送風機用のモータ２に出力さ
れ、室外送風機３の回転が停止する。これにてデフロス
ト運転が行なわれ、室外熱交換器４の表面に付着した霜
が溶融除去される。A refrigerant temperature sensor 51 is attached to the outlet refrigerant pipe of the outdoor heat exchanger 4, and an outside air temperature sensor 52 is attached to an appropriate portion of the outdoor unit 1. The outdoor unit 1 incorporates a defrost controller 50 including a microcomputer and its peripheral circuits.
The detection values of 1 and 52 are input to the defrost determining means 53 in the defrost controller 50. Here, it is determined from the two detected values whether the outdoor heat exchanger 4 is in the frosting condition, and the switching from the heating operation to the defrost operation is determined. This decision is output to the 4-way switching valve 8 via the output means 54, and
The one-way switching valve 8 is switched to the cooling cycle position. Further, this determination is output to the motor 2 for the outdoor blower via the output means 55, and the rotation of the outdoor blower 3 is stopped. In this way, the defrost operation is performed, and the frost adhering to the surface of the outdoor heat exchanger 4 is melted and removed.
【０００８】この従来のデフロスト方式を以後、「逆サ
イクルデフロスト」という。This conventional defrost method is hereinafter referred to as "reverse cycle defrost".
【０００９】[0009]
【発明が解決しようとする課題】上記従来の車両用ヒー
トポンプ式空調装置には解決すべき次の課題があった。The above conventional heat pump type air conditioner for a vehicle has the following problems to be solved.
【００１０】即ち、従来の車両用ヒートポンプ式空調装
置においては、デフロスト運転中、室外送風機の運転が
停止されるが、車両走行中には走行風が室外熱交換器を
通過するので、車両走行速度が大きくなると効果的な除
霜ができないという不具合があった。That is, in the conventional heat pump type air conditioner for a vehicle, the operation of the outdoor blower is stopped during the defrost operation, but since the traveling wind passes through the outdoor heat exchanger during the traveling of the vehicle, the traveling speed of the vehicle is reduced. There was a problem that the effective defrosting could not be performed when the size became large.
【００１１】本発明は上記課題解決のため、除霜用電気
ヒータを備え、室外熱交換器が強い空気流に曝らされる
場合は除霜用電気ヒータを自動的に作動させる車両用ヒ
ートポンプ式空調装置を提供することを目的とする。In order to solve the above problems, the present invention is provided with an electric heater for defrosting, and when the outdoor heat exchanger is exposed to a strong air flow, the electric heater for defrosting is automatically operated. The purpose is to provide an air conditioner.
【００１２】[0012]
【課題を解決するための手段】本発明は上記課題の解決
手段として次の（１）〜（３）に記載の車両用ヒートポ
ンプ式空調装置を提供しようとするものである。The present invention is intended to provide a vehicle heat pump type air conditioner as described in (1) to (3) below, as a means for solving the above problems.
【００１３】（１）．室外熱交換器の着霜条件時にデフ
ロスト運転を行わせる機能を有する除霜コントローラを
備えた車両用ヒートポンプ式空調装置において、除霜用
電気ヒータと、車両の走行速度を検出する速度センサ
と、同速度センサの検出速度が所定速度以下のときには
逆サイクルデフロスト運転を、所定速度を超えるときに
は上記除霜用電気ヒータによる電気ヒータデフロスト運
転を行わせる除霜方式決定手段を備えた除霜コントロー
ラとを具備してなることを特徴とする車両用ヒートポン
プ式空調装置。(1). In a heat pump type air conditioner for a vehicle equipped with a defrost controller having a function of performing a defrost operation in a frosting condition of an outdoor heat exchanger, an electric heater for defrosting, a speed sensor for detecting a traveling speed of the vehicle, and the same. A defrosting controller having defrosting method determining means for performing a reverse cycle defrosting operation when the speed detected by the speed sensor is equal to or lower than a predetermined speed, and performing an electric heater defrosting operation by the defrosting electric heater when the speed exceeds a predetermined speed. A heat pump type air conditioner for a vehicle, characterized in that
【００１４】（２）．上記（１）記載の車両用ヒートポ
ンプ式空調装置において、速度センサに代えて設けられ
た車両の走行停止信号発信器と、車両が停止時には逆サ
イクルデフロスト運転を、車両が走行中には除霜用電気
ヒータによる電気ヒータデフロスト運転を行わせる除霜
方式決定手段を備えた除霜コントローラとを具備してな
ることを特徴とする車両用ヒートポンプ式空調装置。(2). In the vehicle heat pump type air conditioner described in (1) above, a vehicle travel stop signal transmitter provided in place of the speed sensor, reverse cycle defrost operation when the vehicle is stopped, and defrosting while the vehicle is traveling. A heat pump type air conditioner for a vehicle, comprising: a defrost controller having defrosting method determining means for performing an electric heater defrosting operation by an electric heater.
【００１５】（３）．上記（１）記載の車両用ヒートポ
ンプ式空調装置において、速度センサに代えて設けられ
た室外熱交換器の入口の風速を検出する風速センサと、
同風速センサに検出された入口風速が所定風速以下のと
きには逆サイクルデフロスト運転を、所定風速を超える
ときには上記除霜用電気ヒータによる電気ヒータデフロ
スト運転を行わせる除霜方式決定手段を備えた除霜コン
トローラとを具備してなることを特徴とする車両用ヒー
トポンプ式空調装置。(3). In the vehicle heat pump type air conditioner described in (1) above, a wind speed sensor for detecting the wind speed at the inlet of the outdoor heat exchanger provided in place of the speed sensor,
Defrosting provided with defrosting method determining means for performing the reverse cycle defrosting operation when the inlet wind speed detected by the same wind speed sensor is equal to or lower than the predetermined wind speed, and performing the electric heater defrosting operation by the defrosting electric heater when exceeding the predetermined wind speed. A heat pump type air conditioner for a vehicle, comprising: a controller.
【００１６】[0016]
【作用】本発明は上記のように構成されるので次の作用
を有する。Since the present invention is constructed as described above, it has the following actions.
【００１７】（１）．上記（１）の構成にあっては除霜
用電気ヒータを設け、車両の速度センサと、同速度セン
サの検出速度が所定値以下のときは逆サイクルデフロス
ト運転を、所定値を超えるときは除霜用電気ヒータによ
る電気ヒータデフロスト運転を行なわせる除霜方式決定
手段付きの除霜コントローラを備えるので、室外熱交換
器に当る風が所定以上の風速になる車速では電気ヒータ
デフロスト運転を行なうことにより除霜効果の低下を防
止できる。(1). In the configuration of (1) above, an electric heater for defrosting is provided, and the reverse speed defrost operation is performed when the speed sensor of the vehicle and the detected speed of the speed sensor are equal to or lower than a predetermined value, and when the speed exceeds a predetermined value. Since the defrosting controller with the defrosting method determining means for performing the electric heater defrosting operation with the electric heater for frost is provided, by performing the electric heater defrosting operation at the vehicle speed at which the wind hitting the outdoor heat exchanger has a wind speed higher than a predetermined speed. It is possible to prevent the defrosting effect from decreasing.
【００１８】（２）．上記（２）の構成にあっては、上
記（１）の構成の車速検出用の速度センサの代りに車両
の走行停止信号発信器を設け、車両が停止時には逆サイ
クルデフロスト運転を、走行中には電気ヒータデフロス
ト運転を行なわせる除霜方式決定手段付きの除霜コント
ローラを備えるので、室外熱交換器に風が当り始める車
両の走行開始後及び走行中は電気ヒータデフロスト運転
を行なうことにより除霜効果の低下を防止できる。(2). In the configuration of the above (2), a vehicle traveling stop signal transmitter is provided in place of the vehicle speed detecting speed sensor of the above configuration (1), and when the vehicle is stopped, the reverse cycle defrost operation is performed, and when the vehicle is traveling, Is equipped with a defrosting controller with a defrosting method determining means for performing an electric heater defrosting operation.Therefore, defrosting is performed by performing an electric heater defrosting operation after the start of the vehicle when the wind begins to hit the outdoor heat exchanger and during the traveling. It is possible to prevent a decrease in the effect.
【００１９】（３）．上記（３）の構成にあっては上記
（１）の構成の車速検出用の速度センサの代りに室外熱
交換器の入口の風速を検出する風速センサを設け、入口
風速が所定風速以下のときには逆サイクルデフロスト運
転を、所定風速を超えるときは電気ヒータデフロスト運
転を行なわせる除霜方式決定手段付きの除霜コントロー
ラを備えるので、室外熱交換器の除霜能率に直接関わる
その入口風速が所定値を超えたときは電気ヒータデフロ
スト運転を行なうことができ、除霜をきわめて効果的に
行なうことができる。(3). In the configuration of (3) above, a wind velocity sensor for detecting the wind velocity at the inlet of the outdoor heat exchanger is provided in place of the vehicle speed detection velocity sensor of the above configuration (1), and when the inlet wind velocity is equal to or lower than the predetermined wind velocity. Since the reverse cycle defrost operation is equipped with a defrost controller with a defrosting method determining device that performs an electric heater defrost operation when the wind speed exceeds a predetermined wind speed, the inlet wind speed that is directly related to the defrosting efficiency of the outdoor heat exchanger has a predetermined value. When it exceeds, electric heater defrost operation can be performed, and defrosting can be performed very effectively.
【００２０】[0020]
【実施例】本発明の第１〜第３実施例を図１〜図５によ
り説明する。なお、従来例または先の実施例と同様また
は同機能の部材には同符号を付し、必要ある場合を除
き、説明を省略する。また、図１は第１〜第３実施例に
共通する室外熱交換器４ａの斜視図、図２は図１に代わ
る、電気ヒータ６４を個数を増し外部に設けた代替図
で、両図の説明は第１実施例で行ない、他実施例では省
略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS First to third embodiments of the present invention will be described with reference to FIGS. It should be noted that members similar to or having the same functions as those in the conventional example or the previous embodiment are denoted by the same reference numerals, and description thereof will be omitted unless necessary. Further, FIG. 1 is a perspective view of an outdoor heat exchanger 4a common to the first to third embodiments, and FIG. 2 is an alternative view in which the number of electric heaters 64 is increased and provided outside, as an alternative to FIG. The description will be given in the first embodiment and omitted in other embodiments.
【００２１】（第１実施例）請求項１に係る第１実施例
を図１〜図３により説明する。(First Embodiment) A first embodiment according to claim 1 will be described with reference to FIGS.
【００２２】図１は第１実施例等に係る室外熱交換器４
ａの斜視図、図２は図１の電気ヒータ６４を外部に設け
た図１の代替図、図３は本実施例の系統図である。FIG. 1 shows an outdoor heat exchanger 4 according to the first embodiment.
a is a perspective view, FIG. 2 is an alternative view of FIG. 1 in which the electric heater 64 of FIG. 1 is provided outside, and FIG. 3 is a system diagram of this embodiment.
【００２３】図１において、室外熱交換器４ａはフィン
アンドチューブ式コイル１１、分配器１５、キャピラリ
チューブ１６、ヘッダ１７により構成され、フィンアン
ドチューブ式コイル１１は多数のフィン１２、冷媒配管
１３、ベンド１４、電気ヒータ６４により構成されてい
る。In FIG. 1, the outdoor heat exchanger 4a is composed of a fin-and-tube coil 11, a distributor 15, a capillary tube 16 and a header 17. The fin-and-tube coil 11 includes a large number of fins 12, refrigerant pipes 13, It is composed of a bend 14 and an electric heater 64.
【００２４】フィン１２には多数の孔（図１では縦６列
×４個＝２４個の孔）が穿設されており、５列２０個の
孔には冷媒配管１３、１列４個の穴には電気ヒータ６４
が挿入され、各々フィン１２の孔の内面に密着してい
る。そして数本（図では４本）のサーキットが形成でき
るよう冷媒配管１３はベンド１４により接続されてい
る。The fin 12 is provided with a large number of holes (6 rows in the vertical direction × 4 holes = 24 holes in FIG. 1), and the holes in the 5 rows and 20 holes are the refrigerant pipes 13 and the holes in the 1 row are 4 holes. Electric heater 64 in the hole
Are inserted and are in close contact with the inner surfaces of the holes of the fins 12, respectively. The refrigerant pipes 13 are connected by bends 14 so that several (4 in the figure) circuits can be formed.
【００２５】次に上記図１の構成の作用について図３を
援用して説明する。Next, the operation of the configuration shown in FIG. 1 will be described with reference to FIG.
【００２６】先ず、暖房運転中には、室外ユニット１の
絞り９で断熱膨張して、低温の気液二相となった冷媒
が、分配器１５に入り、ここで数本（図１では４本）の
サーキットに分配され、キャピラリチューブ１６を経
て、冷媒配管１３に入る。ここで外気より熱を奪い、蒸
発気化した冷媒はヘッダ１７に集められ、圧縮機７に吸
入される。First, during the heating operation, the refrigerant that has undergone adiabatic expansion at the throttle 9 of the outdoor unit 1 and becomes a low-temperature gas-liquid two-phase enters the distributor 15, where several refrigerants (4 in FIG. 1). Main) circuit, and enters the refrigerant pipe 13 through the capillary tube 16. Here, the refrigerant that has taken heat from the outside air and evaporated and evaporated is collected in the header 17 and sucked into the compressor 7.
【００２７】逆サイクルデフロストでは、圧縮機７から
吐出された高温のガス冷媒がヘッダ１７を経て、冷媒配
管１３に入り、フィン１２に付着した霜が溶融除去され
る。その過程で凝縮液化した冷媒はキャピラリチューブ
１６、分配器１５を経て、室内熱交換器２１を通って、
圧縮機７に戻る。In the reverse cycle defrost, the high temperature gas refrigerant discharged from the compressor 7 enters the refrigerant pipe 13 through the header 17 and the frost adhering to the fins 12 is melted and removed. The refrigerant condensed and liquefied in the process passes through the capillary tube 16, the distributor 15 and the indoor heat exchanger 21,
Return to compressor 7.
【００２８】電気ヒータデフロストでは、電気ヒータ６
４に通電され、その熱によりフィン１２に付着した霜が
溶融除去される。In the electric heater defrost, the electric heater 6
4 is energized, and the heat melts and removes the frost adhering to the fins 12.
【００２９】なお、図１のようにフィンアンドチューブ
コイル１１の内部に電気ヒータ６４を組込むことが困難
な場合には、デフロスト能力は低下するが、図２のよう
に、フィン１２の外に電気ヒータ６４を付設することも
できる。When it is difficult to assemble the electric heater 64 inside the fin-and-tube coil 11 as shown in FIG. 1, the defrosting ability is lowered, but as shown in FIG. The heater 64 can be attached.
【００３０】図３の系統図において、６０は車両の走行
速度に応じて除霜方式を決定するための除霜方式決定手
段であり、車速検出センサ５６からの検出値が入力され
るよう接続されている。また除霜コントローラ５０ａ内
には出力手段６１，６２，６３が追設されている。In the system diagram of FIG. 3, reference numeral 60 denotes a defrosting method determining means for determining the defrosting method according to the traveling speed of the vehicle, which is connected so that the detection value from the vehicle speed detecting sensor 56 is input. ing. Output means 61, 62, 63 are additionally provided in the defrost controller 50a.
【００３１】その他の構成、作用は従来例の図６、図７
と同じであり、対応する部材には同じ符号が付されてい
る。Other configurations and operations are shown in FIGS. 6 and 7 of the conventional example.
The same reference numerals are given to corresponding members.
【００３２】次に第１実施例の作用について図１〜図３
により説明する。Next, the operation of the first embodiment will be described with reference to FIGS.
Will be described.
【００３３】除霜決定手段５３は、従来のものと同様、
入力された冷媒温度センサ５１、外気温度センサ５２の
各々検出値より、着霜条件にあると判断したときには、
除霜運転指令を除霜方式決定手段６０に出力する。除霜
方式決定手段６０は入力された除霜運転指令を受けて、
入力された車速検出値をここに予め入力されている設定
値と比較し、検出車速が設定値以下のときは逆サイクル
デフロストを、検出車速が設定値を超えるときは電気ヒ
ータデフロストを行うことを決定する。そして、逆サイ
クルデフロスト運転指令の場合は従来と同じように、各
々出力手段５４，５５を経て伝達され、四方切換弁８を
冷房サイクル位置に切換え、室外送風機３を停止する。
一方、電気ヒータデフロスト運転指令の場合は、出力手
段６１を経て、電気ヒータ６４に出力され、電気ヒータ
６４に通電される。またこの指令は出力手段６２，６３
を経て室外送風機用のモータ２及び圧縮機７に出力さ
れ、室外送風機３及び圧縮機７の運転が停止する。The defrost determining means 53 is similar to the conventional one.
When it is determined from the detected values of the refrigerant temperature sensor 51 and the outside air temperature sensor 52 that are input, that the frost condition is present,
The defrosting operation command is output to the defrosting method determining means 60. The defrosting method determining means 60 receives the input defrosting operation command,
The input vehicle speed detection value is compared with the preset value input here.When the detected vehicle speed is less than or equal to the set value, reverse cycle defrosting is performed, and when the detected vehicle speed exceeds the set value, electric heater defrosting is performed. decide. Then, in the case of the reverse cycle defrost operation command, it is transmitted via the output means 54 and 55 respectively as in the conventional case, the four-way switching valve 8 is switched to the cooling cycle position, and the outdoor blower 3 is stopped.
On the other hand, in the case of the electric heater defrost operation command, it is output to the electric heater 64 via the output means 61, and the electric heater 64 is energized. This command is output by the output means 62, 63.
Is output to the motor 2 and the compressor 7 for the outdoor blower, and the operations of the outdoor blower 3 and the compressor 7 are stopped.
【００３４】（第２実施例）請求項２に係る第２実施例
を図４により説明する。(Second Embodiment) A second embodiment according to claim 2 will be described with reference to FIG.
【００３５】図４は第２実施例に係る部分系統図であ
る。図において５７は第１実施例における車速検出セン
サ５６の代りに設けられた車両の走行停止信号発信器で
あり、その出力は除霜方式決定手段６０に入力されるよ
う接続されている。上記以外の構成は第１実施例と同じ
である。第２実施例においては、除霜方式決定手段６０
は、走行停止信号発信器５７を介して車両より停止信号
が入力された場合には逆サイクルデフロストを、走行信
号が入力された場合には電気ヒータデフロストを行うこ
とを決定する。FIG. 4 is a partial system diagram according to the second embodiment. In the figure, reference numeral 57 denotes a vehicle travel stop signal transmitter provided in place of the vehicle speed detection sensor 56 in the first embodiment, and its output is connected to be input to the defrosting method determining means 60. The configuration other than the above is the same as that of the first embodiment. In the second embodiment, the defrosting method determining means 60
Determines to perform reverse cycle defrost when a stop signal is input from the vehicle via the travel stop signal transmitter 57, and to perform electric heater defrost when a travel signal is input.
【００３６】（第３実施例）請求項３に係る第３実施例
を図５により説明する。(Third Embodiment) A third embodiment according to claim 3 will be described with reference to FIG.
【００３７】図５は第３実施例に係る部分系統図であ
る。図において５８は第１実施例における車速検出セン
サ５６の代りに設けられた入口風速検出センサで、室外
熱交換器４ａの空気入口に取付けられる。その出力は除
霜方式決定手段６０に入力されるよう接続されている。
上記以外の構成は第１実施例と同じである。FIG. 5 is a partial system diagram according to the third embodiment. In the figure, reference numeral 58 is an inlet wind speed detection sensor provided in place of the vehicle speed detection sensor 56 in the first embodiment, and is attached to the air inlet of the outdoor heat exchanger 4a. The output is connected to be input to the defrosting method determining means 60.
The configuration other than the above is the same as that of the first embodiment.
【００３８】第３実施例において、除霜方式決定手段６
０は、入口風速検出センサ５８を介して入力された室外
熱交換器４ａの空気入口の風速検出値を、予め入力され
ている設定値と比較し、検出風速が設定値以下の場合は
逆サイクルデフロストを、検出風速が設定値を超える場
合には電気ヒータデフロストを行うことを決定する。In the third embodiment, the defrosting method determining means 6
0 compares the detected wind speed value of the air inlet of the outdoor heat exchanger 4a, which is input via the inlet wind speed detection sensor 58, with a preset value, and if the detected wind speed is less than or equal to the preset value, reverse cycle Defrost is determined to be performed when the detected wind speed exceeds the set value.
【００３９】以上の通り第１〜第３実施例によれば車両
速度が高く、車両走行によって生ずる走行風速が大きく
なり、従来の逆サイクルデフロストでは効果的な除霜が
できない場合には、除霜用電気ヒータによる電気ヒータ
デフロストに切換わるので、効果的な除霜が行なえると
いう利点がある。As described above, according to the first to third embodiments, when the vehicle speed is high, the traveling wind speed generated by the vehicle traveling is high, and the conventional reverse cycle defrost cannot effectively defrost, the defrosting is performed. Since it is switched to the electric heater defrost by the electric heater for use, there is an advantage that effective defrosting can be performed.
【００４０】[0040]
【発明の効果】本発明は上記のように構成されるので次
の効果を有する。Since the present invention is constructed as described above, it has the following effects.
【００４１】即ち、本発明においては、除霜用電気ヒー
タを設けると共に、請求項１にあっては車両速度セン
サ、請求項２にあっては車両走行停止信号発信器、請求
項３にあっては室外熱交換器入口風速センサを設け、こ
れらによって、車両の速度が所定速度以下の時、あるい
は車両が停止している時、あるいは室外熱交換器入口風
速が所定風速以下の時には従来と同じ逆サイクルデフロ
ストを行わせ、車両の速度が所定速度を超える時、ある
いは車両が走行している時、あるいは室外熱交換器入口
風速が所定風速を超える時、即ち、高速風により、逆サ
イクルデフロストでは除霜効果が減じた時には上記除霜
用電気ヒータによる電気ヒータデフロストを行わせるこ
とができる除霜方式決定手段を備えた除霜コントローラ
を設けているので、効果的な除霜を行うことができる。That is, according to the present invention, an electric heater for defrosting is provided, and a vehicle speed sensor according to claim 1, a vehicle running stop signal transmitter according to claim 2, and claim 3 are provided. Is equipped with an outdoor heat exchanger inlet wind speed sensor, which allows the same reverse operation as before when the vehicle speed is below a predetermined speed, when the vehicle is stopped, or when the outdoor heat exchanger inlet wind speed is below a predetermined wind speed. Cycle defrosting is performed, and when the vehicle speed exceeds a predetermined speed, or when the vehicle is running, or when the outdoor heat exchanger inlet wind speed exceeds a predetermined wind speed, that is, due to high-speed wind, the reverse cycle defrosting removes it. Since the defrost controller provided with the defrosting method determining means that can perform the electric heater defrosting by the electric heater for defrosting when the frost effect is reduced, It is possible to carry out the results specific defrosting.
【図１】本発明の第１〜第３実施例に係る室外熱交換器
の斜視図、FIG. 1 is a perspective view of an outdoor heat exchanger according to first to third embodiments of the present invention,
【図２】図１の室外熱交換器の代替図、2 is an alternative view of the outdoor heat exchanger of FIG.
【図３】本発明の第１実施例に係る系統図、FIG. 3 is a system diagram according to the first embodiment of the present invention,
【図４】本発明の第２実施例に係る部分系統図、FIG. 4 is a partial system diagram according to a second embodiment of the present invention,
【図５】本発明の第３実施例に係る部分系統図、FIG. 5 is a partial system diagram according to a third embodiment of the present invention,
【図６】従来の車両用ヒートポンプ式空調装置の系統
図、FIG. 6 is a system diagram of a conventional vehicle heat pump type air conditioner,
【図７】従来の室外ユニットの側断面図である。FIG. 7 is a side sectional view of a conventional outdoor unit.
１ 室外ユニット ４ａ 室外熱交換器 ２０ 室内ユニット ５０ａ 除霜コントローラ ５１ 冷媒温度センサ ５２ 外気温度センサ ５６ 車速検出センサ ５７ 走行停止信号発信器 ５８ 入口風速検出センサ（室外熱交換器の） ６０ 除霜方式決定手段 ６４ 電気ヒータ 1 Outdoor unit 4a Outdoor heat exchanger 20 Indoor unit 50a Defrost controller 51 Refrigerant temperature sensor 52 Outdoor air temperature sensor 56 Vehicle speed detection sensor 57 Travel stop signal transmitter 58 Inlet wind speed detection sensor (for outdoor heat exchanger) 60 Defrosting method determination Means 64 electric heater
Claims (3)
運転を行わせる機能を有する除霜コントローラを備えた
車両用ヒートポンプ式空調装置において、除霜用電気ヒ
ータと、車両の走行速度を検出する速度センサと、同速
度センサの検出速度が所定速度以下のときには逆サイク
ルデフロスト運転を、所定速度を超えるときには上記除
霜用電気ヒータによる電気ヒータデフロスト運転を行わ
せる除霜方式決定手段を備えた除霜コントローラとを具
備してなることを特徴とする車両用ヒートポンプ式空調
装置。1. An electric heater for defrosting and a traveling speed of the vehicle are detected in a vehicle heat pump type air conditioner equipped with a defrosting controller having a function of performing a defrosting operation under a frosting condition of an outdoor heat exchanger. A deceleration method including a speed sensor and defrosting method determining means for performing the reverse cycle defrost operation when the speed detected by the speed sensor is less than or equal to a predetermined speed and performing the electric heater defrost operation by the electric heater for defrosting when the speed exceeds the predetermined speed. A heat pump air conditioner for a vehicle, comprising a frost controller.
調装置において、速度センサに代えて設けられた車両の
走行停止信号発信器と、車両が停止時には逆サイクルデ
フロスト運転を、車両が走行中には除霜用電気ヒータに
よる電気ヒータデフロスト運転を行わせる除霜方式決定
手段を備えた除霜コントローラとを具備してなることを
特徴とする車両用ヒートポンプ式空調装置。2. The vehicle heat pump type air conditioner according to claim 1, wherein a vehicle travel stop signal transmitter provided in place of the speed sensor, and a reverse cycle defrost operation when the vehicle is stopped, and a reverse cycle defrost operation when the vehicle is running. A heat pump type air conditioner for a vehicle, comprising: a defrost controller having defrosting method determining means for performing an electric heater defrost operation by an electric heater for defrosting.
調装置において、速度センサに代えて設けられた室外熱
交換器の入口の風速を検出する風速センサと、同風速セ
ンサに検出された入口風速が所定風速以下のときには逆
サイクルデフロスト運転を、所定風速を超えるときには
上記除霜用電気ヒータによる電気ヒータデフロスト運転
を行わせる除霜方式決定手段を備えた除霜コントローラ
とを具備してなることを特徴とする車両用ヒートポンプ
式空調装置。3. The vehicle heat pump type air conditioner according to claim 1, wherein a wind speed sensor for detecting the wind speed at the inlet of an outdoor heat exchanger provided in place of the speed sensor, and an inlet wind speed detected by the wind speed sensor. Is a predetermined wind speed or less, a reverse cycle defrost operation is performed, and when the predetermined wind speed is exceeded, an electric heater defrost operation by the electric heater for defrosting is performed. Characteristic vehicle heat pump type air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6006916A JPH07205646A (en) | 1994-01-26 | 1994-01-26 | Heat pump type air conditioner for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6006916A JPH07205646A (en) | 1994-01-26 | 1994-01-26 | Heat pump type air conditioner for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07205646A true JPH07205646A (en) | 1995-08-08 |
Family
ID=11651564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6006916A Withdrawn JPH07205646A (en) | 1994-01-26 | 1994-01-26 | Heat pump type air conditioner for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07205646A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007003170A (en) * | 2005-05-24 | 2007-01-11 | Denso Corp | Ejector type cycle |
| JP2010121847A (en) * | 2008-11-19 | 2010-06-03 | Hitachi Appliances Inc | Air conditioner |
| KR101292774B1 (en) * | 2011-08-10 | 2013-08-05 | 한국에너지기술연구원 | Heat exchanger preventing from dew condensation |
| JPWO2013108648A1 (en) * | 2012-01-18 | 2015-05-11 | 三菱電機株式会社 | Heat exchanger for vehicle air conditioner and vehicle air conditioner |
| EP3130493A4 (en) * | 2014-05-13 | 2017-09-27 | Mitsubishi Electric Corporation | Vehicular air conditioner, vehicle provided with same, and method for controlling vehicular air conditioner |
| JP2018503794A (en) * | 2015-01-21 | 2018-02-08 | ヴァレオ システム テルミク | Heat exchanger and temperature control device for motor vehicle equipped with the exchanger |
| EP3689650A1 (en) * | 2019-01-29 | 2020-08-05 | Iveco France S.A.S. | An air conditioning system for a vehicle for public transport |
| CN112361640A (en) * | 2020-10-15 | 2021-02-12 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting method thereof |
| WO2021171803A1 (en) * | 2020-02-27 | 2021-09-02 | 株式会社デンソー | Vehicle air-conditioning device |
| WO2021171802A1 (en) * | 2020-02-27 | 2021-09-02 | 株式会社デンソー | Vehicle air conditioner |
-
1994
- 1994-01-26 JP JP6006916A patent/JPH07205646A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007003170A (en) * | 2005-05-24 | 2007-01-11 | Denso Corp | Ejector type cycle |
| JP2010121847A (en) * | 2008-11-19 | 2010-06-03 | Hitachi Appliances Inc | Air conditioner |
| KR101292774B1 (en) * | 2011-08-10 | 2013-08-05 | 한국에너지기술연구원 | Heat exchanger preventing from dew condensation |
| JPWO2013108648A1 (en) * | 2012-01-18 | 2015-05-11 | 三菱電機株式会社 | Heat exchanger for vehicle air conditioner and vehicle air conditioner |
| EP3130493A4 (en) * | 2014-05-13 | 2017-09-27 | Mitsubishi Electric Corporation | Vehicular air conditioner, vehicle provided with same, and method for controlling vehicular air conditioner |
| US10538145B2 (en) | 2014-05-13 | 2020-01-21 | Mitsubishi Electric Corporation | Vehicle air conditioning apparatus, vehicle including the same, and method for controlling vehicle air conditioning apparatus |
| JP2018503794A (en) * | 2015-01-21 | 2018-02-08 | ヴァレオ システム テルミク | Heat exchanger and temperature control device for motor vehicle equipped with the exchanger |
| EP3689650A1 (en) * | 2019-01-29 | 2020-08-05 | Iveco France S.A.S. | An air conditioning system for a vehicle for public transport |
| WO2021171803A1 (en) * | 2020-02-27 | 2021-09-02 | 株式会社デンソー | Vehicle air-conditioning device |
| WO2021171802A1 (en) * | 2020-02-27 | 2021-09-02 | 株式会社デンソー | Vehicle air conditioner |
| CN112361640A (en) * | 2020-10-15 | 2021-02-12 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
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