JPH0755297A - Vehicular heat pump-type air conditioner - Google Patents
Vehicular heat pump-type air conditionerInfo
- Publication number
- JPH0755297A JPH0755297A JP5197183A JP19718393A JPH0755297A JP H0755297 A JPH0755297 A JP H0755297A JP 5197183 A JP5197183 A JP 5197183A JP 19718393 A JP19718393 A JP 19718393A JP H0755297 A JPH0755297 A JP H0755297A
- Authority
- JP
- Japan
- Prior art keywords
- defrosting
- vehicle
- heat exchanger
- speed
- outdoor heat
- 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
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】本発明は鉄道車両等に設置される
車両用ヒートポンプ式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 a heat pump type air conditioner for a vehicle installed in a railway vehicle or the like.
【０００２】[0002]
【従来の技術】図４は従来の車両用ヒートポンプ式空調
装置の系統図である。図において１は室外ユニット、２
０は室内ユニットであり、これらは冷媒配管を介して接
続されている。室外ユニット１は室外送風機用モータ
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等を備えて構成されている。室内ユニッ
ト２０は室内熱交換器２１、絞り２２等を備えて構成さ
れている。2. Description of the Related Art FIG. 4 is a system diagram of a conventional vehicle heat pump type air conditioner. In the figure, 1 is an outdoor unit, 2
Reference numeral 0 is an indoor unit, which is connected via a refrigerant pipe. The outdoor unit 1 is configured to include an outdoor blower motor 2, an outdoor blower 3, an outdoor heat exchanger 4, a compressor 7, a four-way switching valve 8, a throttle 9, and the like. The indoor unit 20 includes an indoor heat exchanger 21, a throttle 22 and the like.
【０００３】図５は上記従来例の室外ユニット１の構成
を示す断面図である。室外ユニット１は、鉄道車両等の
屋根１００等の上に設置される。モータ２により送風機
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、室外熱交換器を通って矢印のように排出さ
れる。FIG. 5 is a sectional view showing the construction of the outdoor unit 1 of the conventional example. The outdoor unit 1 is installed on a roof 100 or the like of a railway vehicle or the like. When the blower 3 is rotated by the motor 2, outdoor air is introduced from the intake grill 5 at the outside air intake, and is discharged through the outdoor heat exchanger as shown by the arrow.
【０００４】以上に述べた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四方切換弁８を経て室
内熱交換器２１に入りこゝ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の
逆止弁２３を経て室外ユニットの絞り９に入り、こゝで
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、こゝで外気を冷却し、蒸発気化
する。そしてこのガス冷媒は圧縮機１に戻る。これが暖
房サイクルの冷媒の流れであり、冷媒は図４に実線矢印
で示す方向に流れる。破線矢印は冷房サイクルの冷媒流
れ方向を示しているが、これの説明は省略する。When the air conditioner described above 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 heats the vehicle interior air to be condensed and liquefied. . This liquefied refrigerant enters the throttle 9 of the outdoor unit through the check valve 23 of the indoor unit, and adiabatically expands there to become a low-temperature gas-liquid two-phase refrigerant. This refrigerant enters the outdoor heat exchanger 4, where it cools the outside air and vaporizes it. Then, this gas refrigerant returns to the compressor 1. This is the flow of the refrigerant in the heating cycle, and the refrigerant flows in the direction indicated by the solid arrow in FIG. The broken line arrow indicates the refrigerant flow direction of the cooling cycle, but the description thereof is omitted.
【０００５】図４において、室外熱交換器の出口冷媒配
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５１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。こゝでこの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、四方切換弁８
に出力され、四方切換弁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。In FIG. 4, a refrigerant temperature sensor 51 is attached to the outlet refrigerant pipe of the outdoor heat exchanger, and an outside air temperature sensor 52 is attached to an appropriate portion of the outdoor unit 1. A defrost controller 50 including a microcomputer and its peripheral circuits is built in the outdoor unit 1, and the detection values of both sensors 51 and 52 are input to the defrost determining means 53 in the defrost controller 50. This is this 2
It is determined from the 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 made via the output means 54, and the four-way switching valve 8
Is output to switch the four-way switching valve 8 to the cooling cycle position. Further, this determination is output to the outdoor blower motor 2 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.
【０００６】[0006]
【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、効果的な除霜ができない
という不具合があった。In the above conventional heat pump type air conditioner for a vehicle, the operation of the outdoor blower is stopped during the defrosting operation, but the traveling wind passes through the outdoor heat exchanger while the vehicle is traveling. There was a problem that effective defrosting was not possible.
【０００７】本発明は上記従来技術の欠点を解消し、効
果的な除霜を可能にしようとするものである。The present invention solves the above-mentioned drawbacks of the prior art and enables effective defrosting.
【０００８】[0008]
【課題を解決するための手段】本発明は上記課題を解決
したものであって、次の特徴を有する車両用ヒートポン
プ式空調装置に関するものである。 （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、車両の走行速度を検出
する速度センサを設け、この検出速度が或る速度以下で
ありかつ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設けたこと。 （２）上記（１）項に記載の車両用ヒートポンプ式空調
装置において、速度センサの代わりに車両の走行停止信
号発信器を設け、車両が停止時でありかつ室外熱交換器
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設けたこと。 （３）上記（１）項に記載の車両用ヒートポンプ式空調
装置において、速度センサの代わ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、この検出された
入口風速が或る風速以下でありかつ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
ントローラを設けたこと。SUMMARY OF THE INVENTION The present invention solves the above problems and relates to a heat pump type air conditioner for a vehicle having the following features. (1) In a heat pump type air conditioner for a vehicle equipped with a defrost controller having a function of performing a defrosting operation under the frosting condition of the outdoor heat exchanger, a speed sensor for detecting the traveling speed of the vehicle is provided, and the detected speed is A defrost controller having a function of performing a defrost operation at a certain speed or less and under the frosting condition of the outdoor heat exchanger is provided. (2) In the vehicle heat pump type air conditioner according to the above item (1), a vehicle traveling stop signal transmitter is provided instead of the speed sensor, and when the vehicle is stopped and the outdoor heat exchanger is frosted. A defrost controller having a function of performing defrost operation has been provided. (3) In the vehicle heat pump type air conditioner according to the above item (1), a wind speed sensor that detects the wind speed at the inlet of the outdoor heat exchanger is provided instead of the speed sensor, and the detected inlet wind speed is a certain wind speed. A defrost controller having the following function and performing a defrost operation under the frosting condition of the outdoor heat exchanger is provided.
【０００９】[0009]
【作用】本発明においては、上記構成を具えているた
め、車両の走行によって生ずる走行風速が大きく、室外
熱交換器の除霜に無視し得ない悪影響を与える場合には
デフロスト運転に入ることを防止できるので、効果的な
除霜が可能となる。In the present invention, because of the above-described structure, the defrost operation is started when the traveling wind speed generated by the traveling of the vehicle is large and the defrosting of the outdoor heat exchanger has a non-negligible adverse effect. Since it can be prevented, effective defrosting is possible.
【００１０】[0010]
【実施例】図１は本発明の第１実施例に係る系統図であ
る。図において、５６は車速検出センサであり、その検
出値は除霜コントローラ５０内の除霜決定手段５３に入
力させるよう接続されている。上記以外の構成は従来技
術（図４，図５）と同じである。1 is a system diagram according to a first embodiment of the present invention. In the figure, reference numeral 56 is a vehicle speed detection sensor, and the detection value thereof is connected so as to be input to the defrosting determining means 53 in the defrosting controller 50. The configuration other than the above is the same as the conventional technique (FIGS. 4 and 5).
【００１１】本実施例の装置において、除霜決定手段５
３は、入力された車速検出値をこゝ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であり、か
つ、従来技術の項で説明したようにセンサ５１及び５２
の検出値により室外熱交換器４が着霜条件にあると判断
される場合に、暖房運転からデフロスト運転への切換え
を決定する。この決定は従来と同じように、各々出力手
段を経て伝達され、四方切換弁を冷房サイクル位置に切
換え、室外送風機４を停止する。In the apparatus of this embodiment, the defrost determining means 5
No. 3 compares the input vehicle speed detection value with a preset value input in advance, the detected vehicle speed is equal to or less than the preset value, and the sensors 51 and 52 are used as described in the section of the prior art.
When it is determined that the outdoor heat exchanger 4 is in the frosting condition based on the detection value of 1, the switching from the heating operation to the defrost operation is determined. This determination is transmitted via the output means, respectively, as in the conventional case, and the four-way switching valve is switched to the cooling cycle position, and the outdoor blower 4 is stopped.
【００１２】図２は本発明の第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、その出力は除霜決定手段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. 2 is a partial system diagram according to the second embodiment of the present invention. In the figure, reference numeral 57 is a vehicle travel stop signal transmitter provided in place of the vehicle speed detection sensor in the first embodiment, and its output is connected to be input to the defrost determining means. The configuration other than the above is the same as that of the first embodiment.
【００１３】本実施例において、除霜決定手段５３は、
車両より停止信号が入力され、かつ室外熱交換器４が着
霜条件にある場合にデフロスト運転への切り換えを決定
する。In the present embodiment, the defrost determining means 53 is
When the stop signal is input from the vehicle and the outdoor heat exchanger 4 is in the frosting condition, it is determined to switch to the defrost operation.
【００１４】図３は本発明の第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
検出センサの代りに設けられたもので、室外熱交換器４
の空気入口に取付けられた入口風速検出センサであり、
その出力は除霜決定手段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. 3 is a partial system diagram according to the third embodiment of the present invention. In the figure, reference numeral 58 is provided in place of the vehicle speed detection sensor in the first embodiment, and the outdoor heat exchanger 4
Is an inlet wind speed sensor attached to the air inlet of
The output is connected to be input to the defrost determining means. The configuration other than the above is the same as that of the first embodiment.
【００１５】本実施例において、除霜決定手段５３は、
入力された風速検出値をこゝに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であり、かつ室外熱
交換器４が着霜条件にある場合に、デフロスト運転への
切り換えを決定する。In the present embodiment, the defrost determining means 53 is
When the detected wind speed is below the set value and the outdoor heat exchanger 4 is in the frosting condition, the input wind speed detected value is compared with the set value input in advance, and the defrost operation is switched to. To decide.
【００１６】上記各実施例の構成により、車両速度が高
く、あるいは走行風が室外熱交換器の除霜に無視し得な
い悪影響を与える場合には、デフロスト運転に入ること
を防止できるので、効果的な除霜が可能となる。With the configuration of each of the above embodiments, it is possible to prevent the defrost operation from being started when the vehicle speed is high or when the traveling wind has a non-negligible adverse effect on the defrosting of the outdoor heat exchanger. Defrosting is possible.
【００１７】[0017]
【発明の効果】本発明の車両用ヒートポンプ式空調装置
においては、車両速度センサ、あるいは車両走行停止信
号発信器、あるいは室外熱交換器入口風速センサを設
け、これらによって、車両の速度が或る速度以下の時、
あるいは車両が停止している時、あるいは室外熱交換器
入口風速が或る風速以下の時のいずれかの時であり、か
つ室外熱交換器の着霜条件の時に、デフロスト運転を行
わせる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。In the vehicle heat pump type air conditioner of the present invention, a vehicle speed sensor, a vehicle travel stop signal transmitter, or an outdoor heat exchanger inlet wind speed sensor is provided, and the vehicle speed is adjusted to a certain speed. When
Alternatively, when the vehicle is stopped or when the outdoor heat exchanger inlet wind speed is below a certain wind speed, and when the outdoor heat exchanger has frosting conditions, defrost operation is performed. Since the controller is provided, effective defrosting can be performed.
【図１】本発明の第１実施例に係る系統図。FIG. 1 is a system diagram according to a first embodiment of the present invention.
【図２】本発明の第２実施例に係る部分系統図。FIG. 2 is a partial system diagram according to a second embodiment of the present invention.
【図３】本発明の第３実施例に係る部分系統図。FIG. 3 is a partial system diagram according to a third embodiment of the present invention.
【図４】従来の車両用ヒートポンプ式空調装置の系統
図。FIG. 4 is a system diagram of a conventional vehicle heat pump type air conditioner.
【図５】従来の室外ユニットの断面図。FIG. 5 is a sectional view of a conventional outdoor unit.
１ 室外ユニット ２０ 室内ユニット ５０ 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 室外熱交換器入口風速検出センサ 1 Outdoor Unit 20 Indoor Unit 50 Defrost Controller 51 Refrigerant Temperature Sensor 52 Outdoor Air Temperature Sensor 56 Vehicle Speed Detection Sensor 57 Travel Stop Signal Transmitter 58 Outdoor Heat Exchanger Inlet Wind Speed Detection Sensor
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、車両の走行速
度を検出する速度センサを設け、この検出速度が或る速
度以下でありかつ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設け
たことを特徴とする車両用ヒートポンプ式空調装置。1. A heat pump type air conditioner for a vehicle, comprising a defrost controller having a function of performing a defrost operation under a frosting condition of an outdoor heat exchanger, comprising a speed sensor for detecting a traveling speed of the vehicle, and detecting the speed. A heat pump type air conditioner for a vehicle, which is provided with a defrosting controller having a function of performing a defrosting operation under a frosting condition of an outdoor heat exchanger at a speed equal to or lower than a certain speed.
空調装置において、速度センサの代わりに車両の走行停
止信号発信器を設け、車両が停止時でありかつ室外熱交
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設けた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 is provided instead of the speed sensor, and when the vehicle is stopped and the outdoor heat exchanger is frosted. A heat pump type air conditioner for a vehicle, comprising a defrost controller having a function of performing a defrost operation.
空調装置において、速度センサの代わりに室外熱交換器
の入口の風速を検出する風速センサを設け、この検出さ
れた入口風速が或る風速以下でありかつ室外熱交換器の
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
霜コントローラを設けた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 the outdoor heat exchanger is provided instead of the speed sensor, and the detected inlet wind speed is a certain wind speed. A heat pump type air conditioner for a vehicle, which is provided with a defrost controller having the following function and performing a defrosting operation under the frosting condition of the outdoor heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05197183A JP3105707B2 (en) | 1993-08-09 | 1993-08-09 | Heat pump type air conditioner for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05197183A JP3105707B2 (en) | 1993-08-09 | 1993-08-09 | Heat pump type air conditioner for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0755297A true JPH0755297A (en) | 1995-03-03 |
| JP3105707B2 JP3105707B2 (en) | 2000-11-06 |
Family
ID=16370190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05197183A Expired - Fee Related JP3105707B2 (en) | 1993-08-09 | 1993-08-09 | Heat pump type air conditioner for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3105707B2 (en) |
Cited By (8)
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|---|---|---|---|---|
| JP2010234945A (en) * | 2009-03-31 | 2010-10-21 | Hitachi Ltd | Heat pump air conditioning device for railway vehicle |
| WO2012098966A1 (en) * | 2011-01-21 | 2012-07-26 | サンデン株式会社 | Air conditioning device for vehicle |
| JP2012148736A (en) * | 2011-01-21 | 2012-08-09 | Sanden Corp | Air conditioner for vehicle |
| JP2012176660A (en) * | 2011-02-25 | 2012-09-13 | Sanden Corp | Air conditioning device for vehicle |
| JP2012187938A (en) * | 2011-03-08 | 2012-10-04 | Denso Corp | Vehicular air conditioning device |
| US9925877B2 (en) | 2011-01-21 | 2018-03-27 | Sanden Holdings Corporation | Vehicle air conditioning apparatus |
| CN108344066A (en) * | 2018-04-04 | 2018-07-31 | 陕西建工安装集团有限公司 | A kind of multi-online air-conditioning system outdoor machine defrosting device |
| WO2018211888A1 (en) * | 2017-05-15 | 2018-11-22 | 三菱重工サーマルシステムズ株式会社 | Control device, vehicular air conditioning system, method for controlling vehicular air conditioning system, and program |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4631576B2 (en) | 2005-07-21 | 2011-02-16 | 株式会社デンソー | Heating cycle device, its control device and its control method |
-
1993
- 1993-08-09 JP JP05197183A patent/JP3105707B2/en not_active Expired - Fee Related
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