JPH0356863Y2 - - Google Patents
Info
- Publication number
- JPH0356863Y2 JPH0356863Y2 JP1986063670U JP6367086U JPH0356863Y2 JP H0356863 Y2 JPH0356863 Y2 JP H0356863Y2 JP 1986063670 U JP1986063670 U JP 1986063670U JP 6367086 U JP6367086 U JP 6367086U JP H0356863 Y2 JPH0356863 Y2 JP H0356863Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- temperature sensor
- engine
- heat exchange
- exchange fluid
- 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
- 239000012530 fluid Substances 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005338 heat storage Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 206010060904 Freezing phenomenon Diseases 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Sorption Type Refrigeration Machines (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は凝縮器に対する高温熱交換流体用第２
温度センサを設けるとともに、蒸発器に対する低
温熱交換流体用第１温度センサを設け、高温熱交
換流体を熱負荷に供給する第１状態の場合には高
温熱交換流体用第２温度センサの検出結果を基
に、かつ、低温熱交換流体を熱負荷に供給する第
２状態の場合には低温熱交換流体用第１温度セン
サの検出結果を基に、エンジンの回転数制御を行
うように制御装置を設けてあるエンジン駆動型ヒ
ートポンプに関する。[Detailed description of the invention] [Industrial field of application] The present invention is a secondary
A temperature sensor is provided, and a first temperature sensor for low temperature heat exchange fluid is provided for the evaporator, and in the case of the first state in which high temperature heat exchange fluid is supplied to the heat load, the detection result of the second temperature sensor for high temperature heat exchange fluid is provided. and, in the case of a second state in which the low-temperature heat exchange fluid is supplied to the heat load, the control device controls the engine rotation speed based on the detection result of the first temperature sensor for the low-temperature heat exchange fluid. The present invention relates to an engine-driven heat pump.
この種のエンジン駆動型ヒートポンプにおい
て、従来は、前記第１状態で高温熱交換流体用温
度センサが第１設定温度を検出した場合、及び、
第２状態で低温熱交換用温度センサが第３設定温
度を検出した場合にはアイドリング回転数に低下
させて運転を続行するとともに、前記第１状態で
高温熱交換流体用温度センサが前記第１設定温度
より高い第２設定温度を検出した場合、及び、第
２状態で低温熱交換用温度センサが第３設定温度
より低い第４設定温度を検出した場合には、エン
ジンを停止するようにしてあつた（例えば特願昭
60−151053号）。
In this type of engine-driven heat pump, conventionally, when the high-temperature heat exchange fluid temperature sensor detects a first set temperature in the first state, and
When the temperature sensor for low-temperature heat exchange fluid detects the third set temperature in the second state, the rotation speed is reduced to idling and operation continues, and in the first state, the temperature sensor for high-temperature heat exchange fluid detects the third set temperature. When a second set temperature higher than the set temperature is detected, and when the low temperature heat exchange temperature sensor detects a fourth set temperature lower than the third set temperature in the second state, the engine is stopped. Atsuta (for example, Tokgansho)
No. 60-151053).
上記構成では、エンジンの定速回転域から停止
に到るまでの中間移行過程でアイドリング回転域
（1250rpm）を設けてあるが、このアイドリング
回転域では、熱負荷がまだ高負荷状態にあるの
で、エンジンにかかる負荷トルクに対しアイドリ
ング回転数でのエンジンの軸トルクがやや不足ぎ
みになり、エンジン回転が不安定になる。従つ
て、この不安定な回転によつて、却つてエンジン
のトルク変動が大きくなり、エンジンと圧縮機と
の連結用フレキシブルカツプリングが破損するこ
とがあつた。
In the above configuration, an idling rotation range (1250 rpm) is provided in the intermediate transition process from the engine constant speed rotation range to stopping, but in this idling rotation range, the thermal load is still high, so The shaft torque of the engine at idling speed becomes slightly insufficient compared to the load torque applied to the engine, and the engine rotation becomes unstable. Therefore, due to this unstable rotation, the torque fluctuation of the engine becomes large, and the flexible coupling connecting the engine and the compressor may be damaged.
本考案の目的はエンジンの定速回転域から停止
に到る中間移行過程での低速エンジン回転を安定
したものにして、機器（フレキシブルカツプリン
グ）の破損を防止できるものを提供する点にあ
る。 The purpose of the present invention is to provide a device that can stabilize low-speed engine rotation during the intermediate transition process from the engine's constant speed rotation range to stop, thereby preventing damage to equipment (flexible couplings).
本考案による特徴構成は前記第１状態で高温熱
交換流体用第２温度センサが第１設定温度を検出
した場合、及び、第２状態で低温熱交換流体用第
１温度センサが第３設定温度を検出した場合に
は、エンジン回転数をアイドリング回転数より高
い設定回転数に低下させて運転を続行するととも
に、前記第１状態で高温熱交換流体用第２温度セ
ンサが前記第１設定温度より高い第２設定温度を
検出した場合、及び、第２状態で低温熱交換流体
用第１温度センサが前記第３設定温度より低い第
４設定温度を検出した場合には、エンジンを停止
するようにしてある点にあり、その作用効果は次
の通りである。
The characteristic structure according to the present invention is that when the second temperature sensor for high temperature heat exchange fluid detects the first set temperature in the first state, and the first temperature sensor for low temperature heat exchange fluid detects the third set temperature in the second state, is detected, the engine speed is reduced to a set speed higher than the idling speed and operation is continued, and the second temperature sensor for the high temperature heat exchange fluid is set to a temperature lower than the first set temperature in the first state. When a high second set temperature is detected, and when the first temperature sensor for low temperature heat exchange fluid detects a fourth set temperature lower than the third set temperature in the second state, the engine is stopped. The functions and effects are as follows.
つまり、前記中間移行過程でのエンジン回転数
をアイドリング回転数（例えば1250rpm）より高
い回転数（例えば1400rpm）で、かつ、定速回転
数（例えば2000rpm）より低い回転数に設定して
あるので、定速回転時に比べて冷凍回路内の冷媒
と高低温熱交換流体との熱交換量を低減させて凝
縮器での高温損傷又は蒸発器での凍結現象を回避
し乍ら熱負荷に対しては最低限の熱交換作用を維
持できるとともに、前記アイドリング回転数より
高い回転数によつて、エンジンの軸トルクを負荷
トルクに見合つたものにでき、エンジンの回転を
安定させることができる。
In other words, since the engine speed during the intermediate transition process is set to a speed higher than the idling speed (e.g. 1250 rpm) (e.g. 1400 rpm) and lower than the constant speed speed (e.g. 2000 rpm), Compared to constant speed rotation, the amount of heat exchange between the refrigerant and the high-temperature heat exchange fluid in the refrigeration circuit is reduced to avoid high-temperature damage in the condenser or freezing phenomenon in the evaporator, while minimizing heat load. In addition to being able to maintain a limited heat exchange effect, the rotation speed higher than the idling speed allows the shaft torque of the engine to be made commensurate with the load torque, and the rotation of the engine can be stabilized.
その結果、フレキシブルカツプリングにかかる
軸トルクの変動が少なくなり、このカツプリング
の損傷を回避できて、長期に渡つて安定したヒー
トポンプの運転が行えるとともに、前記設定回転
数での運転によつて、熱負荷への影響を抑え乍
ら、ヒートポンプ自体のトラブルを解消でき、エ
ンジンの回転数制御をより有効なものにできた。
As a result, fluctuations in the shaft torque applied to the flexible coupling are reduced, and damage to the coupling can be avoided, allowing stable operation of the heat pump over a long period of time. While minimizing the impact on the load, we were able to eliminate problems with the heat pump itself, making engine speed control more effective.
ヒートポンプシステムについて暖房の場合を例
にとつて説明する。凝縮器１、膨脹弁２、蒸発器
３、エンジンＥ、駆動型圧縮機４からなる熱媒循
環回路に対して、蒸発器３側にこの蒸発器３と熱
交換する井戸水等を熱源水とする低温熱交換流体
循環経路５、及び、凝縮器１側にこの凝縮器１と
熱交換する高温熱交換流体循環経路６を設け、
夫々の循環経路６，５に、第１、第２循環ポンプ
P1，P2を備えている。前記高温熱交換循環経路
６は、蓄熱槽７を中立として凝縮器１と蓄熱槽７
を連結する第１循環経路６Ａと、蓄熱槽７と温室
等の熱負荷８を連結する第２循環経路６Ｂとから
なり、第１循環経路６Ａにエンジン冷却水を熱源
とする第１熱交換器９を設けている。尚、第１熱
交換器９で高温熱交換流体と熱交換するエンジン
冷却水はエンジン排ガスを熱源とした第２熱交換
器１０で熱交換した後第１熱交換器９で熱交換を
行いエンジンＥに帰環する循環形態をとる。
A heat pump system will be explained using a case of heating as an example. For a heat medium circulation circuit consisting of a condenser 1, an expansion valve 2, an evaporator 3, an engine E, and a driven compressor 4, well water or the like that exchanges heat with the evaporator 3 is used as heat source water on the evaporator 3 side. A low temperature heat exchange fluid circulation path 5 and a high temperature heat exchange fluid circulation path 6 for exchanging heat with the condenser 1 are provided on the condenser 1 side,
First and second circulation pumps are provided in the respective circulation paths 6 and 5.
It is equipped with P 1 and P 2 . The high temperature heat exchange circulation path 6 connects the condenser 1 and the heat storage tank 7 with the heat storage tank 7 as neutral.
a first circulation path 6A that connects the heat storage tank 7 and a heat load 8 such as a greenhouse, and a second circulation path 6B that connects the heat storage tank 7 and a heat load 8 such as a greenhouse. There are 9. Note that the engine cooling water that exchanges heat with the high-temperature heat exchange fluid in the first heat exchanger 9 is heat exchanged in the second heat exchanger 10 using engine exhaust gas as a heat source, and then heat exchanged in the first heat exchanger 9 to cool the engine. It takes a circular form that returns to E.
圧縮機４の入力軸とフルキシブルカツプリング
１５を介して連動連結された前記エンジンＥの出
力軸に対しては、この出力軸に嵌着されたギヤ１
６とこのギヤ１６の回転速度を検出する電磁パル
ス式回転センサ１１を設け、この回転センサ１１
の検出結果をエンジン駆動用制御装置１２に出力
するようにしてある。前記制御装置１２は電子カ
バナ１３に連係され、蓄熱槽７に設けられた温度
センサ１４の検出結果を基にエンジンＥの回転数
制御及び発停制御を行う。 The output shaft of the engine E, which is interlocked with the input shaft of the compressor 4 via a flexible coupling 15, is connected to a gear 1 fitted to the output shaft.
6 and an electromagnetic pulse type rotation sensor 11 for detecting the rotation speed of this gear 16.
The detection results are output to the engine drive control device 12. The control device 12 is linked to the electronic cabana 13, and controls the rotational speed and start/stop of the engine E based on the detection results of the temperature sensor 14 provided in the heat storage tank 7.
以上の場合は暖房時を例にとつて説明したが、
冷房時には低温熱交換流体循環経路５を蓄熱槽７
と配管連結し、高温熱交換流体循環経路６に井戸
水等を供給するように切換える。 The above case was explained using heating as an example.
During cooling, the low temperature heat exchange fluid circulation path 5 is connected to the heat storage tank 7.
The high temperature heat exchange fluid circulation path 6 is connected to the piping and switched to supply well water or the like.
次に、エンジンＥの回転数制御及び発停制御に
ついてより細かく詳述する。高温熱交換流体循環
経路１０における凝縮器１出口側に第２温度セン
サS2を設けるとともに、低温熱交換流体循環経路
５における蒸発器３出口側に第１温度センサS1を
設けてある。第２図のグラフを参考にして説明す
ると、暖房時（第１状態）の場合には、蓄熱槽７
の温度センサ１４が始動温度（Ts1＝45℃）を検
出するとエンジンＥが自動的に運転を開始する。
まず、エンジンＥはアイドリング回転数（Na＝
1250rpm）で一定時間運転された後、定速回転数
（Ns＝2000rpm）で運転される。ここで、前記温
度センサ１４が第１の設定温度（T1＝50℃）を
検出するとエンジンＥは定速回転数Nsからアイ
ドリング回転数Naよりやや高い設定回転数Ｎ回
転数に変更されて、その回転数Ｎで運転され、一
定時間後更に高い第２設定温度（T2＝55℃）を
第２温度センサS2が検出した場合にはエンジンＥ
は停止され、前記温度センサ１４が始動温度Ts1
を感知するまで停止状態を維持する。 Next, the rotation speed control and start/stop control of the engine E will be described in more detail. A second temperature sensor S 2 is provided on the exit side of the condenser 1 in the high temperature heat exchange fluid circulation path 10, and a first temperature sensor S 1 is provided on the exit side of the evaporator 3 in the low temperature heat exchange fluid circulation path 5. To explain with reference to the graph in FIG. 2, in the case of heating (first state), the heat storage tank 7
When the temperature sensor 14 detects the starting temperature (T s1 =45° C.), the engine E automatically starts operating.
First, the engine E has an idling speed (Na=
1250rpm) for a certain period of time, and then at a constant rotation speed (Ns = 2000rpm). Here, when the temperature sensor 14 detects the first set temperature (T 1 =50°C), the engine E changes from the constant speed Ns to the set speed N, which is slightly higher than the idling speed Na. If the engine is operated at the rotational speed N and the second temperature sensor S 2 detects a higher second set temperature (T 2 = 55°C) after a certain period of time, the engine E
is stopped, and the temperature sensor 14 detects the starting temperature T s1
It remains stopped until it senses.
次に、冷房時（第２状態）の場合には、蓄熱槽
７の温度センサ１４が始動温度（Ts2＝15℃）を
検出するとエンジンＥが自動的に運転を開始す
る。まず、エンジンＥはアイドリング回転数Na
で一定時間運転された後、定速回転数Nsで運転
される。ここで、前記第１温度センサS1が第３設
定温度（T3＝10℃）を検出するとエンジンＥは
前記設定回転数Ｎで運転され、一定時間後第１温
度センサS1が更に低い第４設定温度（T4＝５℃）
を検出した場合にはエンジンＥは自動停止され、
前記温度センサ１４が始動温度Ts2を感知するま
で停止状態を維持する。 Next, during cooling (second state), when the temperature sensor 14 of the heat storage tank 7 detects the starting temperature (T s2 =15° C.), the engine E automatically starts operating. First, engine E is at idling speed Na
After being operated for a certain period of time, it is operated at a constant rotation speed Ns. Here, when the first temperature sensor S 1 detects the third set temperature (T 3 = 10°C), the engine E is operated at the set rotation speed N, and after a certain period of time, the first temperature sensor S 1 detects the third set temperature (T 3 = 10°C). 4 Set temperature (T 4 = 5℃)
If detected, engine E will be automatically stopped,
The stopped state is maintained until the temperature sensor 14 senses the starting temperature T s2 .
○イ 上記実施例中の設定温度、及び、設定回転数
はそれらの数値に限定されるものでなく、それ
らに近似するものであればよい。
B. The set temperature and set rotation speed in the above embodiments are not limited to these values, but may be anything that approximates them.
○ロ 各第１、第２温度センサS1，S2が夫々設定温
度を感知した場合に驚報を発するようにしても
よい。(b) An alarm may be issued when each of the first and second temperature sensors S 1 and S 2 senses the set temperature.
図面は本考案に係るエンジン駆動型ヒートポン
プの実施例を示し、第１図は全体構成図、第２図
はエンジン運転状態とセンサでの検出温度とでの
制御状態を示すグラフである。
１……凝縮器、３……蒸発器、８……熱負荷、
１２……制御装置、S1……第１温度センサ、S2…
…第２温度センサ、Ｅ……エンジン、T1〜T4…
…第１〜第４設定温度、Na……アイドリング回
転数、Ｎ……設定回転数。
The drawings show an embodiment of the engine-driven heat pump according to the present invention, and FIG. 1 is an overall configuration diagram, and FIG. 2 is a graph showing the control state depending on the engine operating state and the temperature detected by the sensor. 1... Condenser, 3... Evaporator, 8... Heat load,
12...control device, S1 ...first temperature sensor, S2 ...
...Second temperature sensor, E...Engine, T1 to T4 ...
...First to fourth set temperatures, Na...Idling speed, N...Set speed.
Claims (1)
ンサS2を設けるとともに、蒸発器３に対する低温
熱交換流体用第１温度センサS1を設け、高温熱交
換流体を熱負荷８に供給する第１状態の場合には
高温熱交換流体用第２温度センサS2の検出結果を
基に、かつ、低温熱交換流体を熱負荷８に供給す
る第２状態の場合には低温熱換流体用第１温度セ
ンサS1の検出結果を基に、エンジンＥの回転数制
御を行うように制御装置１２を設けてあるエンジ
ン駆動型ヒートポンプにおいて、前記第１状態で
高温熱交換流体用第２温度センサS2が第１設定温
度T1を検出した場合、及び、第２状態で低温熱
交換流体用第１温度センサS1が第３設定温度T3
を検出した場合には、エンジン回転数をアイドリ
ング回転数Naより高い設定回転数Ｎに低下させ
て運転を続行するとともに、前記第１状態で高温
熱交換流体用第２温度センサS2が前記第１設定温
度T1より高い第２設定温度T2を検出した場合、
及び、第２状態で低温熱交換流体用第１温度セン
サーS1が前記第３設定温度T3より低い第４設定
温度T4を検出した場合には、エンジンＥを停止
するようにしてあるエンジン駆動型ヒートポン
プ。 A second temperature sensor S 2 for the high temperature heat exchange fluid for the condenser 1 is provided, and a first temperature sensor S 1 for the low temperature heat exchange fluid for the evaporator 3 is provided, and a first temperature sensor S 2 for supplying the high temperature heat exchange fluid to the heat load 8 is provided. In the case of the second state, the temperature sensor S2 for high temperature heat exchange fluid is supplied based on the detection result of the second temperature sensor S2 for high temperature heat exchange fluid, and in the case of the second state, the first temperature sensor In an engine-driven heat pump that is provided with a control device 12 to control the rotation speed of the engine E based on the detection result of the temperature sensor S 1 , the second temperature sensor S 2 for high-temperature heat exchange fluid is in the first state. detects the first set temperature T 1 and the first temperature sensor S 1 for low temperature heat exchange fluid detects the third set temperature T 3 in the second state.
is detected, the engine speed is reduced to a set speed N higher than the idling speed Na and operation is continued, and the second temperature sensor S 2 for high-temperature heat exchange fluid is set to the second temperature sensor S 2 in the first state. If a second set temperature T2 higher than the first set temperature T1 is detected,
and an engine configured to stop the engine E when the first temperature sensor S1 for low-temperature heat exchange fluid detects a fourth set temperature T4 lower than the third set temperature T3 in the second state. Drive type heat pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986063670U JPH0356863Y2 (en) | 1986-04-25 | 1986-04-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986063670U JPH0356863Y2 (en) | 1986-04-25 | 1986-04-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62173673U JPS62173673U (en) | 1987-11-04 |
| JPH0356863Y2 true JPH0356863Y2 (en) | 1991-12-24 |
Family
ID=30899111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986063670U Expired JPH0356863Y2 (en) | 1986-04-25 | 1986-04-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356863Y2 (en) |
-
1986
- 1986-04-25 JP JP1986063670U patent/JPH0356863Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62173673U (en) | 1987-11-04 |
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