JPS62294869A - Engine drive type air conditioner - Google Patents
Engine drive type air conditionerInfo
- Publication number
- JPS62294869A JPS62294869A JP61105461A JP10546186A JPS62294869A JP S62294869 A JPS62294869 A JP S62294869A JP 61105461 A JP61105461 A JP 61105461A JP 10546186 A JP10546186 A JP 10546186A JP S62294869 A JPS62294869 A JP S62294869A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- heat exchanger
- cooling water
- outdoor heat
- switching valve
- 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
- 239000000498 cooling water Substances 0.000 claims description 17
- 238000005057 refrigeration Methods 0.000 claims description 14
- 230000008020 evaporation Effects 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 description 12
- 238000001816 cooling Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
Landscapes
- Air-Conditioning For Vehicles (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
（イ）産業上の利用分野
この発明は圧縮機がエンジンにて駆動されるエンジン駆
動式空気調和装置に関する。Detailed Description of the Invention 3. Detailed Description of the Invention (a) Field of Industrial Application This invention relates to an engine-driven air conditioner in which a compressor is driven by an engine.
（ロ）従来の技術
従来のこの種のエンジン駆動式空気調和装置は実開昭６
０−１１６１６１号公報に開示きれているように、エン
ジンで圧縮機を駆動して室内の冷暖房を行なっていた。(b) Conventional technology This type of conventional engine-driven air conditioner was first developed in 1986.
As disclosed in Japanese Patent No. 0-116161, the engine drives a compressor to cool and heat the room.
また、エンジンの冷却水を室外側熱交換器の近傍に配設
した放熱器に供給し、冷房時はエンジンの排熱を大気に
放出させるとともに、暖房時はエンジンの排熱を暖房熱
源として利用していた。In addition, engine cooling water is supplied to a radiator placed near the outdoor heat exchanger, allowing engine exhaust heat to be released into the atmosphere during cooling, and using engine exhaust heat as a heating heat source during heating. Was.
ところで、エンジン駆動式空気調和装置を例えばコンピ
ユータ室等の冷房を行なう年間冷房装置として使用する
場合、低外気温時の凝縮圧力の低下に伴って蒸発圧力が
低下し、蒸発作用を行なう室内側熱交換器で凍結が起こ
って圧縮機に液戻りを生じる問題があった。By the way, when an engine-driven air conditioner is used as an annual cooling system for cooling a computer room, etc., the evaporation pressure decreases as the condensing pressure decreases at low outside temperatures, and the indoor heat that performs the evaporation action decreases. There was a problem with freezing occurring in the exchanger and causing liquid to return to the compressor.
（ハ）発明が解決しようとする問題点
凝縮圧力の低下を防止するには室外ファンの風量を制御
するか、ホットガスのバイパス制御を行なうようにして
も良い。しかしながら、室外ファンの風量制御を行なう
場合、緻密な風量制御を必要とすることから制御装置が
複雑となり、装置がコスト高となる欠点があった。また
、バイパス制御を行なう場合、冷−゛能力が低下し、成
績係数が小きくなる欠点があった。(c) Problems to be Solved by the Invention In order to prevent the condensing pressure from decreasing, the air volume of the outdoor fan may be controlled or hot gas bypass control may be performed. However, when controlling the air volume of an outdoor fan, precise air volume control is required, resulting in a complicated control device and a drawback that the cost of the device is high. Furthermore, when bypass control is performed, there is a drawback that the cooling capacity decreases and the coefficient of performance decreases.
この発明は上述した事実に鑑みてなされたものであり・
複雑な制御装置を用５゛たり・冷凍竺力を低下させるこ
となく、外気温が低いときでも安定した冷房運転が行な
えるようにすることを目的とする。This invention was made in view of the above facts.
The purpose of the present invention is to enable stable cooling operation even when the outside temperature is low without using a complicated control device or reducing the refrigeration power.
（ニ）問題点を解決するための手段
この発明ではエンジンと、このエンジンにて駆動される
圧縮機、凝縮作用を行なう室外側熱交換器、減圧装置及
び蒸発作用を行なう室内側熱交換器を順次連設した冷凍
サイクルと、室外側熱交換器の通風径路と並流して外気
が流れる位置に配設した第１放熱器、及び室外側熱交換
器の通風径路の上流側に配設した第２放熱器を有し、こ
れらの放熱器にエンジンの冷却水を切換弁を介して循環
供給する冷却水回路と、冷凍サイクルの凝縮圧力がある
値以上になるように冷却水回路の切換弁を制御する制御
装置とを備えた構成である。(d) Means for Solving Problems This invention includes an engine, a compressor driven by the engine, an outdoor heat exchanger that performs a condensing action, a pressure reducing device, and an indoor heat exchanger that performs an evaporation action. The refrigeration cycles are connected in sequence, the first radiator is placed in a position where outside air flows in parallel with the ventilation path of the outdoor heat exchanger, and the first radiator is placed upstream of the ventilation path of the outdoor heat exchanger. It has two heat radiators, a cooling water circuit that circulates engine cooling water to these radiators via a switching valve, and a switching valve for the cooling water circuit so that the condensation pressure of the refrigeration cycle exceeds a certain value. This configuration includes a control device for controlling the device.
（ホ）作用
りｉ気温が高く、冷凍サイクルの凝縮圧力が高いとき、
エンジンの冷却水は第１放熱器に供給きれ、大気へ放熱
される。外気温が低下し、冷凍サイクルの凝縮圧力が低
下すると、制御装置は冷却水回路の切換弁を制御し、エ
ンジンの冷却水を第２放熱器へ供給する。このため、室
外側熱交換器の冷媒がエンジンの排熱にて加熱され、凝
縮圧力が上昇する。このように、エンジンの排熱を利用
して凝縮圧力をある値以上に保持できるので、蒸発圧力
の低下による室内側熱交換器での凍結が助士される。ま
た、ホットガス五バイパス制御するものに比べて冷凍能
力の低下がなく、制御装置も凝縮圧力に応じて切換弁を
制御するもので良く、安価に構成される。(E) Effect i When the temperature is high and the condensation pressure of the refrigeration cycle is high,
The engine cooling water is completely supplied to the first radiator, and the heat is radiated to the atmosphere. When the outside temperature decreases and the condensing pressure of the refrigeration cycle decreases, the control device controls the switching valve of the cooling water circuit to supply engine cooling water to the second radiator. Therefore, the refrigerant in the outdoor heat exchanger is heated by the exhaust heat of the engine, and the condensation pressure increases. In this way, since the condensing pressure can be maintained above a certain value using exhaust heat from the engine, freezing in the indoor heat exchanger due to a decrease in evaporation pressure is assisted. In addition, compared to the hot gas five-bypass control, there is no reduction in the refrigerating capacity, and the control device can be configured to control the switching valve according to the condensing pressure, making it inexpensive.
（へ）実施例
以下、この発明を図面に示す実施例について詳細に説明
する。(F) Embodiments Hereinafter, embodiments of the present invention shown in the drawings will be described in detail.
図において、エンジン１にて駆動される圧縮機２、凝縮
作用を行なう室外側熱交換器３．３、受液器４、・膨張
弁等の減圧装置５、蒸発作用を行なう室内側熱交換器６
、及び気液分離器７が順次環状に連設きれ、冷凍サイク
ル８が形成きれている。室外側熱交換器３．３の近傍に
は室外ファン９が配設きれている。室外側熱交換器３．
３の上部には室外側熱交換器３．３の通風径路と並流し
て外気が流れるように第１放熱器１０．１０が一体的に
取付けられている。また、室外側熱交換器３．３の通風
径路の上流側となる室外側熱交換器３．３の側部には第
２放熱器１１．１１が一体的に取付けられている。これ
らの放熱器１０．１０．１１．１１は電磁弁等の切換弁
１２．１３をホする冷却水回路１４を介してエンジン１
と配管接続芒れ、エンジン１の冷却水が循環供給きれて
いる。In the figure, a compressor 2 driven by an engine 1, an outdoor heat exchanger 3.3 that performs a condensing action, a liquid receiver 4, a pressure reducing device 5 such as an expansion valve, and an indoor heat exchanger that performs an evaporation action. 6
, and the gas-liquid separator 7 are successively arranged in an annular manner to form a refrigeration cycle 8. An outdoor fan 9 is disposed near the outdoor heat exchanger 3.3. Outdoor heat exchanger 3.
A first radiator 10.10 is integrally attached to the upper part of the outdoor heat exchanger 3.3 so that the outside air flows in parallel with the ventilation path of the outdoor heat exchanger 3.3. Further, a second radiator 11.11 is integrally attached to the side of the outdoor heat exchanger 3.3 on the upstream side of the ventilation path of the outdoor heat exchanger 3.3. These radiators 10, 10, 11, 11 are connected to the engine 1 through a cooling water circuit 14 that connects a switching valve 12, 13 such as a solenoid valve.
The piping connection was broken, and the cooling water for engine 1 was no longer being circulated.
制御装置１５は第２放熱器１１の風上側の外気温を感知
する感温装置１６を有し、この感温装置１６の感知温度
に応じて切換弁１２．１３の開閉制御を行なう。すなわ
ち、感知温度Ｔが第１設定温度Ｔ１以上のとき、切換弁
１２を開、切換弁１３を閉とし、ＴがＴ１より低く、第
２設定温度Ｔ２（ただしＴ １ ＞Ｔ２ ）より高いと
き、切換弁１２．１３をともに開とし、ＴがＴ２以下の
とき、切換弁１２を閉、切換弁１３を開とするものであ
る。The control device 15 has a temperature sensing device 16 that senses the outside air temperature on the windward side of the second radiator 11, and controls the opening and closing of the switching valves 12 and 13 according to the temperature sensed by the temperature sensing device 16. That is, when the sensed temperature T is equal to or higher than the first set temperature T1, the switching valve 12 is opened and the switching valve 13 is closed, and when T is lower than T1 and higher than the second set temperature T2 (T1>T2), Both the switching valves 12 and 13 are opened, and when T is less than T2, the switching valve 12 is closed and the switching valve 13 is opened.
エンジン１を運転許せ、圧搾機２を駆動すると、冷媒が
圧縮機２−室外側熱交換器３．３−受液器４−減圧装置
５−室内側熱交換器６−気液分離器７−圧縮機２の順に
流れ、室外側熱交換器３．３が凝縮作用を行なうととも
に、室内側熱交換器６が蒸発作用を行なう。このため、
室内側熱交換器６を設置した部屋は冷房きれる。When the engine 1 is allowed to operate and the compressor 2 is driven, the refrigerant flows into the compressor 2 - outdoor heat exchanger 3.3 - liquid receiver 4 - pressure reducing device 5 - indoor heat exchanger 6 - gas-liquid separator 7 - The air flows in the order of the compressor 2, with the outdoor heat exchanger 3.3 performing the condensing action and the indoor heat exchanger 6 performing the evaporation action. For this reason,
The room in which the indoor heat exchanger 6 is installed can be cooled.
夏期のように外気温が高いときは切換弁１２が開、切換
弁１３が閉となり、エンジン１の冷却水は切換弁１２を
通って第１放熱器１０・へ循環供給される。このため、
エンジン１の排熱は室外側熱交換器３．３と無関係に大
気へ放熱きれる。When the outside temperature is high, such as in summer, the switching valve 12 is opened and the switching valve 13 is closed, and the cooling water for the engine 1 is circulated and supplied to the first radiator 10 through the switching valve 12. For this reason,
The exhaust heat of the engine 1 can be radiated to the atmosphere regardless of the outdoor heat exchanger 3.3.
春秋の中間期のように、感温装置１６の感知温度ＴがＴ
１より低く、Ｔ２より高いときは切換弁１２．１３がと
もに開となる。このとき、エンジン１の冷却水は切換弁
１２．１３を介して第１放熱器１０及び第２放熱器１１
に循環供給され、エンジン１の排熱は一部が大気に放出
されるとともに、残りが室外側熱交換器３．３の冷媒の
加熱に利用きれる。このため、外気温の低下に伴う冷凍
サイクル８の凝縮圧力の低下が防止される。As in the middle of spring and autumn, the temperature T detected by the temperature sensing device 16 is T.
When it is lower than 1 and higher than T2, both the switching valves 12 and 13 are opened. At this time, the cooling water of the engine 1 is supplied to the first radiator 10 and the second radiator 11 through the switching valve 12.13.
Part of the exhaust heat from the engine 1 is released to the atmosphere, and the rest is used to heat the refrigerant in the outdoor heat exchanger 3.3. Therefore, a decrease in the condensing pressure of the refrigeration cycle 8 due to a decrease in outside temperature is prevented.
冬期のように外気温がさらに低下し、ＴがＴ２よりも低
くなると、制御装置１５は切換弁１２を閉にし、切換弁
１３を開にする。このとき、エンジン１の冷却水は全て
第２放熱器１１に供給され、室外側熱交換器３．３の冷
媒の加熱に利用される。このため、冷凍サイクル８の凝
縮圧力がある値（例えば１０〜１１ｋｇ／Ｃｍ”）以上
に維持きれ、冷凍サイクル８の蒸発圧力の低下を防止す
ることができ、室内側熱交換器６での凍結が防止され、
圧縮機２に液戻りが生じる心配がない。When the outside temperature further decreases and T becomes lower than T2, as in winter, the control device 15 closes the switching valve 12 and opens the switching valve 13. At this time, all of the cooling water for the engine 1 is supplied to the second radiator 11 and used to heat the refrigerant in the outdoor heat exchanger 3.3. Therefore, the condensation pressure of the refrigeration cycle 8 can be maintained at a certain value (for example, 10 to 11 kg/Cm") or higher, and a decrease in the evaporation pressure of the refrigeration cycle 8 can be prevented. is prevented,
There is no fear that liquid will return to the compressor 2.
なお、上述した実施例では第２放熱器１１の風上側の外
気温に応じて冷却水回路１４の切換弁１２．１３を開閉
制御し、冷凍サイクル８の凝縮圧力がある値以上になる
ようにしたが、制御装置１５は図に一点鎖線で示すよう
に、圧縮機２の吐出側の冷媒圧力を圧力検知器１７で検
知し、検知圧力に応じて切換弁１２．１３を開閉制御す
るものでも良い。In the embodiment described above, the switching valves 12 and 13 of the cooling water circuit 14 are controlled to open and close depending on the outside air temperature on the windward side of the second radiator 11, so that the condensation pressure of the refrigeration cycle 8 becomes a certain value or more. However, as shown by the dashed line in the figure, the control device 15 detects the refrigerant pressure on the discharge side of the compressor 2 with the pressure detector 17, and controls the opening and closing of the switching valves 12 and 13 according to the detected pressure. good.
（ト）発明の効果
この発明は以上のように構成きれているので、エンジン
の排熱を利用して冷凍サイクルの凝縮圧力をある値以上
に維持することができ、外気温が低いときでも安定した
冷房運転が可能であり、特に年間を通じて冷房を行なう
ものに適している。(G) Effects of the Invention Since this invention is configured as described above, it is possible to maintain the condensing pressure of the refrigeration cycle above a certain value by using exhaust heat from the engine, and it is stable even when the outside temperature is low. It is particularly suitable for equipment that requires cooling throughout the year.
しかも、ホットガスのバイパス制御をするものに比べて
冷凍能力の低下がなく、運転効率が優れているとともに
、制御装置を簡素にでき、経済性にも優れている。Furthermore, compared to a system that performs hot gas bypass control, there is no reduction in refrigerating capacity, and the operation efficiency is excellent, and the control device can be simplified, making it excellent in economy.
図はこの発明の一実施例を示すエンジン駆動式空気調和
装置の配管系統図である。
１・・・エンジン、 ２・・・圧縮機、 ３・・・室外
側熱交換器、 ５・・・膨張装置、 ６・・・室内
側熱交換器、 ８・・・冷凍サイクル、 １０・・
・第１放熱器、１１・・・第２放熱器、 １２．１３・
・・切換弁、 １４・・・冷却水回路、 １５・・・制
御装置。The figure is a piping system diagram of an engine-driven air conditioner showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Engine, 2... Compressor, 3... Outdoor heat exchanger, 5... Expansion device, 6... Indoor heat exchanger, 8... Refrigeration cycle, 10...
・First radiator, 11... Second radiator, 12.13・
...Switching valve, 14...Cooling water circuit, 15...Control device.
Claims (1)
、凝縮作用を行なう室外側熱交換器、減圧装置及び蒸発
作用を行なう室内側熱交換器を順次連設した冷凍サイク
ルと、室外側熱交換器の通風径路と並流して外気が流れ
る位置に配設した第１放熱器、及び室外側熱交換器の通
風径路の上流側に配設した第２放熱器を有し、これらの
放熱器にエンジンの冷却水を切換弁を介して循環供給す
る冷却水回路と、冷凍サイクルの凝縮圧力がある値以上
になるように冷却水回路の切換弁を制御する制御装置と
を備えたことを特徴とするエンジン駆動式空気調和装置
。(1) A refrigeration cycle consisting of an engine, a compressor driven by the engine, an outdoor heat exchanger for condensing, a pressure reducing device, and an indoor heat exchanger for evaporation, and an outdoor heat exchanger. A first radiator arranged at a position where outside air flows in parallel with the ventilation path of the exchanger, and a second radiator arranged at the upstream side of the ventilation path of the outdoor heat exchanger, these radiators A cooling water circuit that circulates engine cooling water through a switching valve and a control device that controls the switching valve of the cooling water circuit so that the condensation pressure of the refrigeration cycle exceeds a certain value. An engine-driven air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61105461A JPH0788991B2 (en) | 1986-05-08 | 1986-05-08 | Engine driven air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61105461A JPH0788991B2 (en) | 1986-05-08 | 1986-05-08 | Engine driven air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62294869A true JPS62294869A (en) | 1987-12-22 |
| JPH0788991B2 JPH0788991B2 (en) | 1995-09-27 |
Family
ID=14408218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61105461A Expired - Lifetime JPH0788991B2 (en) | 1986-05-08 | 1986-05-08 | Engine driven air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0788991B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010042698A (en) * | 2008-08-08 | 2010-02-25 | Denso Corp | Air conditioner for vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4948280B2 (en) * | 2007-06-19 | 2012-06-06 | 東京瓦斯株式会社 | Heat pump system and control method thereof |
-
1986
- 1986-05-08 JP JP61105461A patent/JPH0788991B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010042698A (en) * | 2008-08-08 | 2010-02-25 | Denso Corp | Air conditioner for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0788991B2 (en) | 1995-09-27 |
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