JPH0142845B2 - - Google Patents
Info
- Publication number
- JPH0142845B2 JPH0142845B2 JP59273374A JP27337484A JPH0142845B2 JP H0142845 B2 JPH0142845 B2 JP H0142845B2 JP 59273374 A JP59273374 A JP 59273374A JP 27337484 A JP27337484 A JP 27337484A JP H0142845 B2 JPH0142845 B2 JP H0142845B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- evaporators
- valve
- way valve
- compressor
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- 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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は１台のコンプレツサに凝縮装置を使用
して、荷室内の互いに隔絶された２つの室のうち
の一方の室を冷凍運転及び他方の室を冷蔵運転と
する態様と、両方の室を共に冷凍運転とする態様
と、両方の室を共に冷蔵運転とする態様の３態様
に選択使用し得るようにした車両用冷凍冷蔵装置
に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention uses a condensing device in one compressor to perform refrigeration operation in one of two compartments isolated from each other in a cargo compartment, and a refrigerating operation in the other compartment. The present invention relates to a vehicular refrigeration system that can be selectively used in three modes: a mode in which one chamber is in a refrigerating operation, a mode in which both chambers are in a freezing operation, and a mode in which both chambers are in a refrigeration mode.
（従来技術及びその問題点）
一般に室温流通が成熟してくると品目毎の適温
輸送が必要となり、また、配送先の規模等により
例えば冷凍品のみ、または、冷蔵品のみの輸送で
は輸送効率が悪いため、輸送適温の異なる複数の
物品を同時輸送できるようにすることが要望され
ている。このため従来、密閉断熱構造の荷室内を
隔壁により２つの室に区画し、一方の室に冷却装
置を配設し、前記隔壁の上部に開閉扉付冷気導入
口を、下部に開閉扉付排出口をそれぞれ設け、一
方の室を低温（−18℃以下）に冷却可能な冷凍庫
とし他方の室は保冷庫として、輸送管理温度の異
なる複数種類の物品の同時輸送を可能にし、ま
た、前記導入口と排出口の開閉扉を共に開放する
ことにより両方の室を共に冷凍庫として使用可能
にした冷凍車が実公昭54−45556号公報に開示の
如く公知である。(Prior art and its problems) In general, as room-temperature distribution matures, it becomes necessary to transport each item at an appropriate temperature, and depending on the size of the destination, for example, transporting only frozen or refrigerated products may not be efficient. Therefore, it is desired to be able to simultaneously transport a plurality of items having different suitable transport temperatures. For this reason, conventionally, a cargo compartment with a sealed and insulated structure is divided into two compartments by a partition wall, a cooling device is installed in one of the compartments, a cold air inlet with an opening/closing door is provided at the top of the partition, and a cold air exhaust port with an opening/closing door is provided at the bottom of the partition. Each room has an outlet, one chamber is a freezer that can be cooled to a low temperature (-18℃ or less), and the other chamber is a cold storage, making it possible to simultaneously transport multiple types of goods with different transport management temperatures. A refrigerating vehicle is known, as disclosed in Japanese Utility Model Publication No. 54-45556, in which both chambers can be used as a freezer by opening both the opening and closing doors of the outlet and the outlet.
斯かる従来のものは一方のみに冷却装置を配設
し、各室の冷凍及び保冷の使い分けは開閉扉の開
閉制御に依存しているため室内温度を被輸送物に
対応して常に正確に管理することができないとい
う問題があつた。 In such conventional systems, a cooling device is installed only in one side, and the use of freezing and cold storage in each compartment depends on the opening/closing control of the opening/closing door, making it possible to always accurately manage the indoor temperature in accordance with the cargo being transported. The problem was that I couldn't do it.
（発明の目的）
本発明は上記事情に鑑みてなされたもので、１
台のコンプレツサに凝縮装置を使用して、荷室内
の互いに隔絶された２つの室のうちの一方の室を
冷凍運転及び他方の室を冷蔵運転とする態様と、
両方の室を共に冷凍運転とする態様と、両方の室
を共に冷蔵運転とする態様の３態様に選択使用し
得、被輸送物に対応して荷室内部温度を常に正確
に管理することができるようにした車両用冷凍冷
蔵装置を提供することを目的とするものである。(Object of the invention) The present invention has been made in view of the above circumstances, and includes:
A mode in which a condensing device is used in the compressor of the storage compartment, and one of two compartments isolated from each other in the cargo compartment is operated for freezing and the other compartment is operated for refrigeration;
It can be selectively used in three modes: a mode in which both compartments are operated as refrigeration, and a mode in which both compartments are operated in refrigeration mode, and the internal temperature of the cargo compartment can be controlled accurately at all times according to the cargo to be transported. It is an object of the present invention to provide a vehicular refrigeration system that can be used in a vehicle.
（問題点を解決するための手段）
上述の問題点を解決するため本発明において
は、密閉断熱構造の荷室内の互いに隔絶された２
つの室に冷凍兼冷蔵用の蒸発装置をそれぞれ配設
し、これら両蒸発装置の冷媒入口を凝縮装置の冷
媒出口にそれぞれ接続すると共に、前記両蒸発装
置の冷媒入口系路に前記荷室内の２つの室の温度
が所定設定温度に達した時冷媒流量を制限する冷
媒流量制限手段をそれぞれ設け、２個の吸入口と
１個の吐出口を有する１台のコンプレツサの吐出
口を前記凝縮装置に接続し、２個の吸入口を前記
両蒸発装置の冷媒出口にアキユームレータをそれ
ぞれ介して接続し、更に前記両アキユームレータ
と前記コンプレツサの２個の吸入口を連通する管
路を、一方向弁と該一方向弁と流れ方向が逆とな
る如く装備した電磁弁とよりなる管路切換装置を
介装した並列管路によつて前記一方向弁の下流側
が主として冷蔵に使用する側に連通されるように
接続し、前記両蒸発装置を同時使用する時は前記
一方向弁と電磁弁を共に閉弁させて前記並列管路
を遮断し、また、前記両蒸発装置の１つを使用す
る場合で前記一方向弁の下流側圧力が上流側圧力
より高い時は前記電磁弁のみを開弁させ、更に前
記一方向弁の下流側圧力が上流側圧力より低い時
は前記一方向弁のみを開弁させる如く構成したも
のである。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides two compartments that are isolated from each other in a cargo compartment having a sealed and insulated structure.
The refrigerant inlets of both evaporators are connected to the refrigerant outlets of the condensing device, and the refrigerant inlets of both evaporators are connected to the two compartments in the cargo compartment. A refrigerant flow rate limiting means is provided for restricting the refrigerant flow rate when the temperature of the two chambers reaches a predetermined set temperature, and the discharge port of one compressor having two suction ports and one discharge port is connected to the condensing device. the two suction ports are connected to the refrigerant outlets of both the evaporators via accumulators, and the pipes connecting the two suction ports of the accumulators and the compressor are connected to one another. The downstream side of the one-way valve is connected to the side mainly used for refrigeration by a parallel pipe line interposed with a pipe switching device consisting of a directional valve and a solenoid valve equipped so that the flow direction is opposite to the one-way valve. When both the evaporators are connected in communication, both the one-way valve and the solenoid valve are closed to shut off the parallel pipe line, and one of the evaporators is used. In this case, when the downstream pressure of the one-way valve is higher than the upstream pressure, only the solenoid valve is opened, and when the downstream pressure of the one-way valve is lower than the upstream pressure, only the one-way valve is opened. The structure is such that the valve is opened.
（実施例）
以下本発明の一実施例を図面に基づき説明す
る。第１図は本発明の冷凍冷蔵装置を具備した車
両の縦断側面を示し、同図中１は車両（冷凍車）
で運転室２と荷台部３を有している。前記運転室
２には１台のコンプレツサ４が設けられている。
該コンプレツサ４は電磁クラツチ５を介して図示
しない車両走行用エンジン、または、車載の補助
エンジンにより駆動されるようになつており、第
２図に示すように２個の吸入口４1，４2と１個の
吐出口４3を有している。前記荷台部３上には密
閉断熱構造の荷室６が載設固定されている。該荷
室６の内部はその略中間部に設けた断熱材製の隔
壁７により互いに隔絶された２つの室６1，６2に
区画されている。前記荷室６の外部前側上部には
例えば１台（複数台でもよい）の凝縮装置８が配
設されている。該凝縮装置８は第２図に示すよう
に凝縮器８1と受液器８2と送風機８3とからなり、
その冷媒入口８4は前記コンプレツサ４の吐出口
４3に管路９を介して接続され、冷媒出口８5は２
つに分岐されて冷凍兼冷蔵用の蒸発装置１０，１
１の冷媒入口１０1，１１1にそれぞれ連通されて
いる。前記冷凍兼冷蔵用の蒸発装置１０，１１は
前記荷室６内の両方の室６1，６2の内部上側にそ
れぞれ配設されている。これら蒸発装置１０，１
１に互いに同一構成で、蒸発器１０2，１１2と、
膨張弁１０3，１１3と、送風機１０4，１１4とか
らなる。前記凝縮装置８の冷媒出口８5と蒸発装
置１０，１１の冷媒入口１０1，１１1の接続管路
１２1，１２2には冷媒流量制限手段である電磁弁
１３1，１３2がそれぞれ介装されている。これら
電磁弁１３1〜１３2は常閉型で通電によりオンし
て開弁状態となり前記荷室６内の両室６1，６2及
び運転室２の温度が所定設定温度に達した時オフ
して閉弁状態となるものである。前記冷凍兼冷蔵
用の蒸発装置１０，１１の冷媒出口１０5，１１5
は管路１４1，１４2を介してアキユームレータ１
５，１６の冷媒入口１５1，１６1に接続され、こ
れらアキユームレータ１５，１６の冷媒出口１５
２，１６2は管路１７1，１７2を介して前記コンプ
レツサ４の吸入口４1，４2にそれぞれ接続されて
いる。前記アキユームレータ１５，１６の冷媒出
口管路１７1，１７2相互間には管路切換装置１８
が介装されている。該切換装置１８は一方向弁１
８2と、該一方向弁１８2と流れ方向が逆となる如
く装備した電磁弁１８4とにより構成され、これ
ら一方向弁１８2と電磁弁１８4は互いに並列をな
す管路（並列管路）１８1，１８3に介装され、前
記一方向弁１８2の下流側が主として冷蔵に使用
する側（前記出口管路１７2側）に連通される如
く接続し、前記一方向弁１８2の上流側が主とし
て冷凍に使用する側（前記出口管路１７1側）に
連通される如く接続してある。前記電磁弁１８4
は常閉型で前記出口管路１７1の内部圧力が前記
電磁弁１３1の閉弁により低下した時通電により
オンして開弁し前記出口管路１７1と１７2は連通
する。前記電磁弁１３2の閉弁により前記出口管
路１７2の内部圧力が低下した時前記一方向弁１
８2は自動的に開弁し前記出口管路１７1と１７2
は連通する。なお、前記アキユームレータ１５，
１６及び切換装置１８は一例として第１図に示す
如く荷台部３の側部に配設されている。また、前
記蒸発装置１０，１１には第１図に示すように温
度設定器兼用の温度検知器１９，２０がそれぞれ
設けられており、これら検知器１９，２０により
前記荷室６内の両室６1，６2の冷却温度を例えば
−18℃〜＋５℃の範囲に亘つて任意に設定し得る
ようになつている。(Example) An example of the present invention will be described below based on the drawings. FIG. 1 shows a longitudinal cross-sectional side view of a vehicle equipped with the refrigeration system of the present invention, and 1 in the figure shows a vehicle (refrigeration vehicle).
It has a driver's cab 2 and a loading platform 3. One compressor 4 is provided in the driver's cab 2.
The compressor 4 is driven by a vehicle running engine (not shown) or an auxiliary engine mounted on the vehicle via an electromagnetic clutch 5, and has two intake ports 4 1 and 4 2 as shown in FIG. and one discharge port 43 . A luggage compartment 6 having a hermetically insulated structure is mounted and fixed on the loading platform 3. The interior of the luggage compartment 6 is divided into two compartments 6 1 and 6 2 separated from each other by a partition wall 7 made of a heat insulating material provided approximately in the middle thereof. For example, one condensing device 8 (or a plurality of condensing devices 8 may be used) is disposed in the upper part of the front outside of the luggage compartment 6. As shown in FIG. 2, the condensing device 8 consists of a condenser 8 1 , a liquid receiver 8 2 , and a blower 8 3 .
The refrigerant inlet 84 is connected to the discharge port 43 of the compressor 4 via a pipe 9, and the refrigerant outlet 85 is connected to the discharge port 43 of the compressor 4.
Evaporators 10 and 1 for freezing and refrigeration
The refrigerant inlets 10 1 and 11 1 respectively communicate with each other. The freezing and refrigerating evaporators 10 and 11 are respectively disposed inside and above both chambers 6 1 and 6 2 in the luggage compartment 6. These evaporators 10,1
1, evaporators 10 2 and 11 2 having the same configuration as each other,
It consists of expansion valves 10 3 and 11 3 and blowers 10 4 and 11 4 . Connecting pipes 12 1 and 12 2 between the refrigerant outlet 8 5 of the condensing device 8 and the refrigerant inlets 10 1 and 11 1 of the evaporators 10 and 11 are provided with electromagnetic valves 13 1 and 13 2 as refrigerant flow rate limiting means, respectively . equipped. These solenoid valves 13 1 to 13 2 are normally closed types, and are turned on when energized, open, and turned off when the temperature of both chambers 6 1 and 6 2 in the cargo compartment 6 and the driver's cab 2 reach a predetermined set temperature. The valve is then closed. Refrigerant outlets 10 5 , 11 5 of the evaporator 10 , 11 for freezing and refrigeration
is connected to the accumulator 1 via pipes 14 1 and 14 2
The refrigerant inlets 15 1 and 16 1 of the accumulators 15 and 16 are connected to the refrigerant inlets 15 1 and 16 1 of the accumulators
2 and 16 2 are connected to the suction ports 4 1 and 4 2 of the compressor 4 via pipes 17 1 and 17 2 , respectively. A pipe switching device 18 is provided between the refrigerant outlet pipes 17 1 and 17 2 of the accumulators 15 and 16.
is interposed. The switching device 18 is a one-way valve 1
8 2 and a solenoid valve 18 4 installed so that the flow direction is opposite to that of the one -way valve 18 2 . The one - way valve 18 2 is connected so that the downstream side of the one-way valve 18 2 communicates with the side mainly used for refrigeration (the outlet pipe 17 2 side). The upstream side of the pipe is connected to the side mainly used for refrigeration (the outlet pipe 171 side). Said solenoid valve 18 4
is a normally closed type, and when the internal pressure of the outlet pipe 17 1 decreases due to the closing of the electromagnetic valve 13 1 , the valve is turned on and opened by energization, and the outlet pipes 17 1 and 17 2 communicate with each other. When the internal pressure of the outlet pipe 17 2 decreases due to the closing of the solenoid valve 13 2 , the one-way valve 1
8 2 automatically opens the outlet pipes 17 1 and 17 2
communicate. Note that the storage unit 15,
16 and the switching device 18 are arranged on the side of the loading platform 3, as shown in FIG. 1, for example. Further, as shown in FIG. 1, the evaporators 10 and 11 are provided with temperature detectors 19 and 20, which also serve as temperature setting devices, respectively, and these detectors 19 and 20 are used to control the temperature of both the compartments in the cargo compartment 6. The cooling temperature of 6 1 and 6 2 can be arbitrarily set within a range of, for example, -18°C to +5°C.
（作用）
次に、上記構成の車両用冷凍冷蔵装置の作用を
説明する。(Function) Next, the function of the vehicle refrigeration system having the above configuration will be explained.
まず、第１の室６1を冷凍運転、第２の室６2を
冷蔵運転とする場合は、第１の室６1の温度検知
器１９を例えば−18℃、第２の室６2の温度検知
器２０を例えば＋５℃にそれぞれ設定する。この
状態で、エンジンの動力により電磁クラツチ５を
介してコンプレツサ４が回転駆動すると冷媒は圧
縮されて高温・高圧となつて、その吐出口４3か
ら管路９内を通つて凝縮装置８内に流入し、公知
の作用により高温・高圧の液冷媒となつた後、管
路１２1〜１２2の電磁弁１３1〜１３2をそれぞれ
介して蒸発装置１０，１１内にそれぞれ流入す
る。これら蒸発装置１０，１１にて公知の作用に
より前記荷室６内の両室６1，６2がそれぞれ冷却
されてその内部温度が低下する。これら蒸発装置
１０，１１内において冷却作用を行なつた冷媒は
管路１４1，１４2、アキユームレータ１５，１
６、及び管路１７1，１７2を通りコンプレツサ４
の吸入口４1，４2から吸入されて再度圧縮され
る。このような作用や連続的に行なわれて所謂冷
凍サイクル運転が行なわれる。 First, when the first chamber 6 1 is in the freezing operation and the second chamber 6 2 is in the refrigeration operation, the temperature sensor 19 of the first chamber 6 1 is set to -18°C, for example, and the temperature of the second chamber 6 2 is set to -18°C. The temperature detectors 20 are each set to, for example, +5°C. In this state, when the compressor 4 is driven to rotate by the power of the engine via the electromagnetic clutch 5, the refrigerant is compressed to a high temperature and high pressure, and passes through the conduit 9 from the discharge port 43 into the condensing device 8. The refrigerant flows into the evaporators 10 and 11 through the electromagnetic valves 13 1 to 13 2 of the pipes 12 1 to 12 2 , respectively, after becoming a high-temperature, high-pressure liquid refrigerant by a known action. These evaporators 10 and 11 cool both chambers 6 1 and 6 2 in the luggage compartment 6 by a known function, thereby reducing the internal temperature thereof. The refrigerant that performed the cooling action in these evaporators 10 and 11 is passed through pipes 14 1 and 14 2 and accumulators 15 and 1.
6, and the compressor 4 through pipes 17 1 and 17 2
is sucked in through the suction ports 4 1 and 4 2 and compressed again. Such actions are performed continuously to perform a so-called refrigeration cycle operation.
そして、冷却作用が進行して例えば第２の室６
２の温度が設定温度（＋５℃）に達するとこれを
温度検知器２０が検出し、その検出信号に基づい
て一方（第２の室６2の蒸発装置１１側）の電磁
弁１３2がオフして閉弁状態となり、第２の室６2
の蒸発装置１１内への冷媒流入は停止する。この
ため一方の電磁弁１３2より下流側の第２の室６2
の蒸発装置１１、アキユームレータ１６を介して
コンプレツサ４に至る管路１４2，１７2内の圧力
が低下する。一方、第１の室６1の温度は設定温
度（−18℃）に達しないため、第１の室６1の蒸
発装置１０、アキユームレータ１５を介してコン
プレツサ４に至る管路１４1，１７1内の圧力が、
前記第２の室６2の蒸発装置１１側の管路１４2，
１７2内の圧力に比して高い。従つて、第１の室
６1の蒸発装置１０側の管路１７1内の冷媒の一部
が切換装置１８の一方向弁１８2を介して第２の
室６2の蒸発装置１１側の管路１７2内を通つてコ
ンプレツサ４の第２の吸入口４2から吸入されて
圧縮される。前述と逆に第１の室６1の温度が設
定温度に達し、第２の室６2の温度が設定温度に
達しない場合は、他方（第１の室６1の蒸発装置
１０側）の電磁弁１３1がオフして閉弁状態とな
ると共に切換装置１８の電磁弁１８4がオンして
開弁状態となる。前記他方の電磁弁１３1の閉弁
により第１の室６1の蒸発装置１０内への冷媒流
入は停止する。このため他方の電磁弁１３1より
下流側の第１の室６1の蒸発装置１０、アキユー
ムレータ１５を介してコンプレツサ４に至る管路
１４1，１７1内の圧力が低下する。従つて第２の
室６2の蒸発装置１１、アキユームレータ１６を
介してコンプレツサ４に至る管路１４2，１７2内
の冷媒の一部が切換装置１８の電磁弁１８4を介
して第１の室６1の蒸発装置１０側の管路１７1内
を通つてコンプレツサ４の第１の吸入口４1から
吸入されて圧縮される。このように、荷室６内の
いずれか一方の室の温度が所定温度に達して冷却
不要となつた時、該室の蒸発装置への冷媒の流入
を停止すると共に、冷却を継続する他方の室の蒸
発装置から流出する冷媒をコンプレツサ４の両方
の吸入口４1，４2から吸入して圧縮することがで
きるものである。 Then, as the cooling action progresses, for example, the second chamber 6
When the temperature of the chamber 2 reaches the set temperature (+5°C), the temperature detector 20 detects this, and based on the detection signal, one of the solenoid valves 13 2 (on the evaporator 11 side of the second chamber 6 2 ) is turned off. The valve is closed, and the second chamber 6 2
The flow of refrigerant into the evaporator 11 is stopped. Therefore, the second chamber 6 2 on the downstream side of one solenoid valve 13 2
The pressure in the pipes 14 2 and 17 2 leading to the compressor 4 via the evaporator 11 and the accumulator 16 decreases. On the other hand, since the temperature of the first chamber 6 1 does not reach the set temperature (-18° C.), the pipe line 14 1 leading to the compressor 4 via the evaporator 10 and the accumulator 15 of the first chamber 6 1 , 17 The pressure inside 1 is
a pipe line 14 2 on the evaporator 11 side of the second chamber 6 2 ;
17 High compared to the pressure inside 2 . Therefore, a part of the refrigerant in the pipe 17 1 on the evaporator 10 side of the first chamber 6 1 is transferred to the evaporator 11 side of the second chamber 6 2 via the one-way valve 18 2 of the switching device 18. It passes through the pipe 17 2 and is sucked in from the second suction port 4 2 of the compressor 4 and compressed. Contrary to the above, if the temperature in the first chamber 6 1 reaches the set temperature and the temperature in the second chamber 6 2 does not reach the set temperature, the other (evaporator 10 side of the first chamber 6 1 ) The solenoid valve 13 1 is turned off to be in a closed state, and the solenoid valve 18 4 of the switching device 18 is turned on to be in an open state. By closing the other electromagnetic valve 13 1 , the flow of refrigerant into the evaporator 10 in the first chamber 6 1 is stopped. For this reason, the pressure in the pipes 14 1 and 17 1 leading to the compressor 4 via the evaporator 10 and the accumulator 15 in the first chamber 6 1 on the downstream side of the other electromagnetic valve 13 1 decreases. Therefore, a part of the refrigerant in the pipes 14 2 , 17 2 leading to the compressor 4 via the evaporator 11 and the accumulator 16 in the second chamber 6 2 is transferred to the second chamber 6 2 via the solenoid valve 18 4 of the switching device 18 . It passes through the pipe line 17 1 on the evaporator 10 side of the chamber 6 1 and is sucked in from the first suction port 4 1 of the compressor 4 and compressed. In this way, when the temperature of one of the compartments in the cargo compartment 6 reaches a predetermined temperature and cooling is no longer necessary, the flow of refrigerant to the evaporator of that compartment is stopped, and the other compartment continues cooling. The refrigerant flowing out from the evaporator in the room can be sucked in through both suction ports 4 1 and 4 2 of the compressor 4 and compressed.
なお、荷室６内の両室６1，６2の温度検知器１
９，２０を例えば−18℃に設定すれば両室６1，
６2共に冷凍運転となり、また、前記温度検知器
１９，２０を例えば＋５℃に設定すれば両室６1，
６2共に冷蔵運転となる。更に、両室６1，６2共
に冷却不要時は電磁クラツチ５を切り離してコン
プレツサ４の駆動を停止させるものである。 In addition, the temperature detectors 1 in both compartments 6 1 and 6 2 in the luggage compartment 6
For example, if 9 and 20 are set to -18℃, both chambers 6 1 ,
Both chambers 6 1 and 6 2 are in refrigeration operation, and if the temperature detectors 19 and 20 are set to, for example, +5°C, both chambers 6 1 ,
6 Both 2 are in refrigerated operation. Further, when cooling is not required for both chambers 6 1 and 6 2 , the electromagnetic clutch 5 is disconnected to stop the compressor 4 from driving.
上記実施例においては、冷媒流量制限手段を電
磁弁１３1，１３2にて構成したが、これに限られ
るものではなく、例えば電磁弁１３1，１３2を設
けずに蒸発装置１０，１１の送風機１０4，１１4
のオン・オフ動作に関連して開度制御される膨張
弁１０3，１１3により冷媒流量制限手段を構成し
てもよい。また、上述の説明は２室冷凍の使用を
可能にした装置を装備したが、１室を冷蔵のみに
限定してもよい。 In the above embodiment, the refrigerant flow rate limiting means is configured by the solenoid valves 13 1 and 13 2 , but the invention is not limited to this . Blower 10 4 , 11 4
The refrigerant flow rate limiting means may be constituted by the expansion valves 10 3 and 11 3 whose opening degree is controlled in relation to the on/off operation of the expansion valves 10 3 and 11 3 . Moreover, although the above description is equipped with a device that enables the use of two-compartment refrigeration, one compartment may be limited to refrigeration only.
（発明の効果）
以上詳述した如く本発明の車両用冷凍冷蔵装置
は密閉断熱構造の荷室内の互いに隔絶された２つ
の室に冷凍兼冷蔵用の蒸発装置をそれぞれ配設
し、これら両蒸発装置の冷媒入口を凝縮装置の冷
媒出口にそれぞれ接続すると共に、前記両蒸発装
置の冷媒入口系路に前記荷室内の温度が所定設定
温度に達した時冷媒流量を制限する冷媒流量制限
手段をそれぞれ設け、２個の吸入口と１個の吐出
口を有する１台のコンプレツサの吐出口を前記凝
縮装置に接続し、２個の吸入口を前記両蒸発装置
の冷媒出口にアキユームレータをそれぞれ介して
接続し、更に前記両アキユームレータと前記コン
プレツサの２個の吸入口を連通する管路を、一方
向弁と該一方向弁と流れ方向が逆となる如く装備
した電磁弁とよりなる管路切換装置を介装した並
列管路によつて前記一方向弁の下流側が主として
冷蔵に使用する側に連通されるように接続し、前
記両蒸発装置を同時使用する時は前記一方向弁と
電磁弁を共に閉弁させて前記並列管路を遮断し、
また、前記両蒸発装置の１つを使用する場合で前
記一方向弁の下流側圧力が上流側圧力より高い時
は前記電磁弁のみを開弁させ、更に前記一方向弁
の下流側圧力が上流側圧力より低い時は前記一方
向弁のみを開弁させる如く構成したものである。(Effects of the Invention) As detailed above, the vehicular refrigeration system of the present invention has an evaporator for freezing and refrigeration disposed in two mutually isolated compartments in a cargo compartment having a hermetically insulated structure. A refrigerant inlet of the device is connected to a refrigerant outlet of the condensing device, and refrigerant flow rate limiting means are provided in the refrigerant inlet lines of both evaporators to limit the refrigerant flow rate when the temperature in the cargo compartment reaches a predetermined set temperature. the discharge port of one compressor having two suction ports and one discharge port is connected to the condensing device, and the two suction ports are connected to the refrigerant outlets of both the evaporation devices via an accumulator, respectively. and a pipe line that connects the two accumulators and the two suction ports of the compressor, and further includes a one-way valve and a solenoid valve equipped so that the flow direction is opposite to that of the one-way valve. The downstream side of the one-way valve is connected to the side mainly used for refrigeration by a parallel pipe line equipped with a line switching device, and when both the evaporators are used simultaneously, the one-way valve and closing the solenoid valves together to cut off the parallel pipes;
Further, when one of the two evaporators is used, when the pressure on the downstream side of the one-way valve is higher than the pressure on the upstream side, only the solenoid valve is opened, and furthermore, when the pressure on the downstream side of the one-way valve is higher than the pressure on the upstream side, When the pressure is lower than the side pressure, only the one-way valve is opened.
従つて、コンプレツサ１台に凝縮装置と荷室内
の互いに隔絶された２つの室にそれぞれ設置した
蒸発装置とを組み合わせることにより、一方の室
を冷凍、他方の室を冷蔵とする運転態様と、両室
を共に冷凍、または両室を共に冷蔵とする運転態
様が可能であり、しかも、いずれか一方の室が設
定温度に達した時は当該一方の室側の蒸発装置へ
の冷媒の流入を停止すると共に、冷却を継続する
方の室の蒸発装置から流出する冷媒をコンプレツ
サの２つの吸入口に切り換えて連通させ、被輸送
物に対応して荷室内部温度を常に正確に管理する
ことができる。 Therefore, by combining a condensing device and an evaporating device installed in two mutually isolated compartments in the cargo compartment in a single compressor, it is possible to operate in a manner in which one compartment is used for freezing and the other is used for refrigeration, and for both. It is possible to operate in such a way that both chambers are frozen or both chambers are refrigerated, and when either chamber reaches the set temperature, the flow of refrigerant to the evaporator in that one chamber is stopped. At the same time, the refrigerant flowing out from the evaporator in the compartment that continues to be cooled is switched and communicated with the two intake ports of the compressor, making it possible to always accurately control the internal temperature of the cargo compartment according to the cargo being transported. .
図面は本発明の一実施例を示し、第１図は本発
明の冷凍冷蔵装置を具備した車両（冷凍車）の縦
断側面図、第２図は本発明の冷凍冷蔵装置の機器
系統図である。
１……車両、４……コンプレツサ、４1，４2…
…コンプレツサの吸入口、４3……コンプレツサ
の吐出口、６……荷室、６1，６2……荷室内の
室、８……凝縮装置、８4……凝縮装置の冷媒入
口、８5……凝縮装置の冷媒出口、１０，１１…
…蒸発装置、１０1，１１1……蒸発装置の冷媒入
口、１０3，１１3……蒸発装置の膨張弁、１０4，
１１4……蒸発装置の送風機、１３1，１３2……
電磁弁（冷媒流量制限手段）、１５，１６……ア
キユームレータ、１５1，１６1……アキユームレ
ータの冷媒入口、１５2，１６2……アキユームレ
ータの冷媒出口、１７1，１７2……出口管路、１
８……切換装置。
The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional side view of a vehicle (refrigerating vehicle) equipped with the refrigeration system of the present invention, and FIG. 2 is an equipment system diagram of the refrigeration system of the present invention. . 1...vehicle, 4...compressor, 4 1 , 4 2 ...
...Suction port of compressor, 4 3 ...Discharge port of compressor, 6 ... Cargo compartment, 6 1 , 6 2 ... Chamber inside cargo compartment, 8 ... Condensing device, 8 4 ... Refrigerant inlet of condensing device, 8 5 ... Refrigerant outlet of condensing device, 10, 11...
...Evaporator, 10 1 , 11 1 ... Refrigerant inlet of evaporator, 10 3 , 11 3 ... Expansion valve of evaporator, 10 4 ,
11 4 ... Air blower of the evaporator, 13 1 , 13 2 ...
Solenoid valve (refrigerant flow rate limiting means), 15, 16... Accumulator, 15 1 , 16 1 ... Refrigerant inlet of the accumulator, 15 2 , 16 2 ... Refrigerant outlet of the accumulator, 17 1 , 17 2 ...Exit pipe, 1
8...Switching device.
Claims (1)
つの室に冷凍兼冷蔵用の蒸発装置をそれぞれ配設
し、これら両蒸発装置の冷媒入口を凝縮装置の冷
媒出口にそれぞれ接続すると共に、前記両蒸発装
置の冷媒入口系路に前記荷室内の２つの室の温度
が所定設定温度に達した時冷媒流量を制限する冷
媒流量制限手段をそれぞれ設け、２個の吸入口と
１個の吐出口を有する１台のコンプレツサの吐出
口を前記凝縮装置に接続し、２個の吸入口を前記
両蒸発装置の冷媒出口にアキユームレータをそれ
ぞれ介して接続し、更に前記両アキユームレータ
と前記コンプレツサの２個の吸入口を連通する管
路を、一方向弁と該一方向弁と流れ方向が逆とな
る如く装備した電磁弁とよりなる管路切換装置を
介装した並列管路によつて前記一方向弁の下流側
が主として冷蔵に使用する側に連通されるように
接続し、前記両蒸発装置を同時使用する時は前記
一方向弁と電磁弁を共に閉弁させて前記並列管路
を遮断し、また、前記両蒸発装置の１つを使用す
る場合で前記一方向弁の下流側圧力が上流側圧力
より高い時は前記電磁弁のみを開弁させ、更に前
記一方向弁の下流側圧力が上流側圧力より低い時
は前記一方向弁のみを開弁させる如く構成したこ
とを特徴とする車両用冷凍冷蔵装置。 ２ 前記冷媒流量制限手段は電磁弁よりなること
を特徴とする特許請求の範囲第１項記載の車両用
冷凍冷蔵装置。 ３ 前記冷媒流量制限手段は前記蒸発装置の送風
機のオン・オフ動作に関連して開度制御される膨
張弁よりなることを特徴とする特許請求の範囲第
１項記載の車両用冷凍冷蔵装置。 ４ 前記車両は冷凍車であることを特徴とする特
許請求の範囲第１項乃至第３項のいずれか１つの
項記載の車両用冷凍冷蔵装置。[Scope of Claims] 1. 2 isolated from each other in a cargo compartment having a sealed and insulated structure.
The refrigerant inlets of both evaporators are connected to the refrigerant outlets of the condensing device, and the refrigerant inlets of both evaporators are connected to the two compartments in the cargo compartment. A refrigerant flow rate limiting means is provided for restricting the refrigerant flow rate when the temperature of the two chambers reaches a predetermined set temperature, and the discharge port of one compressor having two suction ports and one discharge port is connected to the condensing device. The two suction ports are connected to the refrigerant outlets of both the evaporators via accumulators, and the pipes connecting the two suction ports of the compressor and the accumulators are connected to each other. The downstream side of the one-way valve is connected to the side mainly used for refrigeration by a parallel pipe line interposed with a pipe switching device consisting of a directional valve and a solenoid valve equipped so that the flow direction is opposite to the one-way valve. When the two evaporators are connected to communicate with each other, both the one-way valve and the solenoid valve are closed to shut off the parallel pipe line, and one of the evaporators is used. In this case, when the downstream pressure of the one-way valve is higher than the upstream pressure, only the solenoid valve is opened, and when the downstream pressure of the one-way valve is lower than the upstream pressure, only the one-way valve is opened. A vehicular refrigeration system characterized by being configured to open a valve. 2. The vehicular refrigeration system according to claim 1, wherein the refrigerant flow rate restricting means comprises a solenoid valve. 3. The vehicular refrigeration system according to claim 1, wherein the refrigerant flow rate limiting means comprises an expansion valve whose opening degree is controlled in relation to on/off operations of the blower of the evaporator. 4. The vehicular freezing and refrigerating device according to any one of claims 1 to 3, wherein the vehicle is a refrigerating vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27337484A JPS61155018A (en) | 1984-12-26 | 1984-12-26 | Chilling and refrigerating device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27337484A JPS61155018A (en) | 1984-12-26 | 1984-12-26 | Chilling and refrigerating device for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61155018A JPS61155018A (en) | 1986-07-14 |
| JPH0142845B2 true JPH0142845B2 (en) | 1989-09-14 |
Family
ID=17527008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27337484A Granted JPS61155018A (en) | 1984-12-26 | 1984-12-26 | Chilling and refrigerating device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61155018A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013050243A (en) * | 2011-08-30 | 2013-03-14 | Hirade Densobu Corp | Refrigeration cycle for two-chamber type refrigeration vehicle |
| CN105402921A (en) * | 2015-12-25 | 2016-03-16 | 天津市傲景农业科技发展有限公司 | Refrigerating system used for cold-chain logistics vehicles |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424627U (en) * | 1977-07-22 | 1979-02-17 |
-
1984
- 1984-12-26 JP JP27337484A patent/JPS61155018A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61155018A (en) | 1986-07-14 |
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