CN1445487A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN1445487A CN1445487A CN03120577A CN03120577A CN1445487A CN 1445487 A CN1445487 A CN 1445487A CN 03120577 A CN03120577 A CN 03120577A CN 03120577 A CN03120577 A CN 03120577A CN 1445487 A CN1445487 A CN 1445487A
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- China
- Prior art keywords
- cooling water
- gas
- engine
- situation
- aircondition
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- 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.)
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- 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
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- Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides an air conditioning device capable of efficiently detecting leakage of cooling water in an engine cooling device. The air conditioning device has the engine cooling device in which a compressor 16 mounted in an outdoor unit is driven by an engine 30 and the engine cooling water is circulated to a discharger by a cooling water circulation pump for cooling the engine. The air conditioning device also has a detecting means 51 for detecting a driving current of the cooling water circulation pump 47 and a determining means 13 for determining occurrence of air catching of the cooling water circulation pump 47 based on the detected value.
Description
Technical field
The present invention relates to a kind of aircondition, it has the engine cooling apparatus of the engine of cooling drive compression machine.
Background technology
Usually, the compressor that is installed on the off-premises station of aircondition is by engine-driven, aircondition has the engine cooling apparatus that utilizes cooling water circulating pump to make the cooling water of this engine circulate and cool off in radiator, this aircondition is well known.
This engine cooling apparatus leaks so might cooling water take place in each junction owing to being to connect water pipe to constitute.
But, there is not high efficiency to detect the device that this cooling water leaks at present, therefore exist because problems such as the unusual risings of the cooling water temperature that the cooling water deficiency causes.
So, the objective of the invention is to, solve above-mentioned the problems of the prior art, provide a kind of and can high efficiency detect the aircondition that cooling water leaks in the engine cooling apparatus.
Summary of the invention
First aspect present invention, a kind of aircondition is provided, it is installed in compressor on the off-premises station by motor driven, have the engine cooling apparatus that utilizes cooling water circulating pump to make the cooling water of this engine in radiator, circulate and cool off, comprise the testing agency of the drive current that detects described cooling water circulating pump and judge the decision mechanism of the generation of stinging gas (エ ア Yi Nogami body) of cooling water circulating pump according to this detected value.
Second aspect present invention, in the described aircondition of first aspect present invention, described decision mechanism has lower limit a reference value and two a reference values of upper limit a reference value as a reference value with the detected value comparison of described drive current.
Third aspect present invention, in the described aircondition of second aspect present invention, described decision mechanism, the first time drive current detected value under the situation below the lower limit a reference value, directly be judged to be and sting gas, under the situation more than the upper limit a reference value, be judged to be flase drop and survey, under situation in addition, driving current value is repeatedly added up and averaged, surpass at this mean value under the situation of stinging the gas decision content of regulation, just be judged to be and sting gas.
Fourth aspect present invention, in the described aircondition of second aspect present invention, computational discrimination is a number of times of stinging gas, reach within a certain period of time in this calculation times under the situation of number of times of regulation, with regard to final decision for gas has taken place to sting.
Fifth aspect present invention aspect the present invention the first～four in each described aircondition, is stung under the situation of gas the hydropenic message of output cooling detecting described cooling water circulating pump.
Description of drawings
Fig. 1 is the loop diagram of an embodiment of aircondition of the present invention;
Fig. 2 is the figure of the determination flow of expression decision mechanism.
The specific embodiment
Below, embodiments of the invention are described with reference to the accompanying drawings.
Fig. 1 is the loop diagram of the refrigerant loop etc. among the embodiment of expression aircondition of the present invention.
As shown in Figure 1, have off-premises station 11, for example many (such as 2) indoor set 12A, 12B and control device 13 as the heat-pump type air-conditioner 10 of refrigerating plant, the outdoor refrigerant pipe arrangement 14 of off-premises station 11 and the indoor refrigerant piping 15A of each of indoor set 12A, 12B, 15B link together.
Off-premises station 11 is arranged on outdoor, dispose compressor 16 on the outdoor refrigerant pipe arrangement 14, the suction side of this compressor 16 has disposed storage heater 17 simultaneously, discharges side and is equipped with cross valve 18, and these cross valve 18 sides have set gradually outdoor heat converter 19, outdoor expansion valve 24, dry nuclear 25.Adjacent chamber's outer heat-exchanger 19 disposes the outdoor fan 20 that draws air from this outdoor heat converter 19 side draughts.In addition, compressor 16 is connected on the gas engine 30 by flexible connector 27 grades, and is driven by this gas engine 30.And then, with outdoor expansion valve 24 bypass, dispose bypass pipe 26.
On the other hand, indoor set 12A, 12B are configured in indoor separately, dispose indoor heat converter 21A, 21B on each comfortable indoor refrigerant piping 15A, 15B, nearby disposed indoor expansion valve 22A, 22B on indoor refrigerant piping 15A, 15B, at indoor heat converter 21A, 21B respectively simultaneously.Described indoor heat converter 21A, the last disposed adjacent of 21B have indoor fan 23A, the 23B to indoor air-supply from this indoor heat converter 21A, 21B.
Symbol among Fig. 1 28 expression filters in addition.Symbol 29 escapes into the safety valve of compressor 16 suction sides for the refrigerant pressure that makes compressor 16 discharge side.
Above-mentioned control device 13 is configured on the off-premises station 11, the running of control off-premises station 11 and indoor set 12A, 12B.Specifically, control device 13 is controlled gas engine 30 (being compressor 30), cross valve 18, outdoor fan 20, the outdoor expansion valve 24 on the off-premises station 11 respectively, and indoor expansion valve 22A, 22B and indoor fan 23A, 23B on indoor set 12A, the 12B.In addition, control device 13 is also controlled the circulating pump 47 of following engine cooling apparatus 41, triple valve 45 etc.
By switching cross valve 18 by control device 13, heat-pump type air-conditioner 10 is set to cooling operation or heating running.Promptly, when switching to refrigeration one side with cross valve 18, control device 13 becomes the cooling operation state, cold-producing medium flows shown in the solid line arrow, outdoor heat converter 19 becomes condensed device, and indoor heat converter 21A, 21B become evaporimeter, and each indoor heat converter 21A, 21B are with indoor refrigeration.And when switching to heating one side with cross valve 18, control device 13 becomes the heating operating condition, cold-producing medium flows shown in dotted arrow, indoor heat converter 21A, 21B become condensed device, and outdoor heat converter 19 becomes evaporimeter, and each indoor heat converter 21A, 21B are warm with indoor system.
In addition, control device 13 is when cooling operation, according to expansion valve 22A, 22B valve opening separately in the air conditioner load control room.When heating was turned round, control device 13 was according to air conditioner load control outdoor expansion valve 24 and indoor expansion valve 22A, 22B valve opening separately.
On the other hand, gaseous mixture is by engine fuel supply device 31, supplies with to the combustion chamber (not shown) of the gas engine 30 of drive compression machine 16.This engine fuel supply device 31 disposes on fuel supplying tubing 32 successively: 2 fuel shut off valve 33, zero adjuster 34, fuel trim valve 35 and actuator 36, the end of actuator 36 sides of this fuel supplying tubing 32 is connected with the above-mentioned combustion chamber of gas engine 30.
Fuel shut off valve 33 series connection is provided with 2, constitutes the fuel shut off valve mechanism of double-enclosure type, 2 fuel shut off valve 33 interlocks, full cut-off or standard-sized sheet, implement no gas leakage in fuel by and connection between alternative selection.
Zero adjuster 34 should zero adjuster 34 front and back in fuel supplying tubing 32 1 side fuel gas pressure (once press a) with 2 side fuel gas pressures (secondary is pressed b) in, press b to be adjusted into the pressure of regulation secondary according to the change of once pressing a, make the running of gas engine 30 stable.
Because air imports from the upstream side of actuator 36, fuel trim valve 35 is adjusted into the best with the air-fuel ratio of the gaseous mixture of generation.In addition, actuator 36 is regulated the quantity delivered of the gaseous mixture of supplying with to the combustion chamber of gas engine 30, the rotating speed of control gas engine 30.
Be connected with engine oil feedway 37 on the gas engine 30.This engine oil feedway 37 disposes oil cut-off valve 39 and oil feed pump 40 etc. on fuel feeding pipe arrangement 38, be used for to gas engine 30 supply engine oil suitably.
Described control by 13 pairs of gas engines 30 of control device specifically is that the fuel shut off valve 33 by 13 pairs of engine fuel supply devices 31 of control device, zero adjuster 34, fuel trim valve 35 and the oil cut-off valve 39 of actuator 36 and engine oil feedway 37 and the control of oil feed pump 40 realize.
Above-mentioned gas engine 30 is cooled by the engine cool medium (for example, engine cooling water) of circulation in the engine cooling apparatus 41 that is provided with on the off-premises station 11.This engine cooling apparatus 41 at one end by gas engine 30 be connected in be attached on the gas engine 30, do not have among the figure on the exhaust heat exchanger of expression, the other end directly is connected roughly being on the loop-like cooling water pipe 42 on this exhaust heat exchanger and disposes paraffin triple valve 43, triple valve 45, the heat-exchangers of the plate type 44 as radiator, radiator 46 and circulating pump 47 successively simultaneously.In addition, to be configured in the circulation pathway of engine cooling water side by side be on the cooling water pipe 42 for heat-exchangers of the plate type 44 and radiator 46.
Rising engine cool water pressure circulated this engine cooling water when above-mentioned circulating pump 47 turned round in cooling water pipe 42.
Above-mentioned paraffin triple valve 43 is used for rapidly with gas engine 30 preheatings.In this paraffin triple valve 43, entrance side port 43A, low temperature side port 43B, high temperature side port 43C are connected to and are attached to the exhaust heat exchanger side on the gas engine 30, the suction side of the circulating pump 47 on the cooling water pipe 42, triple valve 45 sides on the cooling water pipe 42 on the cooling water pipe 42.
In addition, in the triple valve 45, the entrance side port 45A of triple valve 45 is connected with paraffin triple valve 43 sides on the cooling water pipe 42, the 1st port 45B of triple valve 45 is connected with heat-exchangers of the plate type 44 sides on the cooling water pipe 42, and the 2nd port 45C of triple valve 45 is connected with radiator 46 sides on the cooling water pipe 42.
This triple valve 45 is electromagnetic type or electronic proportion expression triple valve.Therefore, only, just engine cooling water can be selected a ground and be directed to heat-exchangers of the plate type 44 sides or radiator 46 sides by switching this triple valve 45.
In addition, this triple valve 45 is switched by control device 13: make the engine cooling water that flows into from paraffin triple valve 43, the 1st port 45B through triple valve 45 when heating is turned round flows to heat-exchangers of the plate type 44 sides, and the 2nd port 45C through triple valve 45 when cooling operation flows to radiator 46 sides.
In addition, heat-exchangers of the plate type 44 is arranged on the cold-producing medium suction side of compressor 16, make through cross valve 18 and flow to the cold-producing medium of refrigerant suction port 16A of compressor 16 and the engine cooling water that flows into from triple valve 45 carries out heat exchange, heat extraction by gas engine 30 heats this cold-producing medium, make its intensification (boosting), simultaneously with the engine cool water cooling.In addition, radiator 46 is emitted the heat of the engine cooling water in the inflow radiator 46 and outdoor heat converter 19 adjacent settings.Therefore, promote heat release by outdoor fan 20.This radiator 46 is arranged on the following wind direction of this outdoor heat converter 19.
The gas engine 30 of the engine cooling water outlet side of gas engine 30 and the cooling water pipe 42 between the paraffin triple valve 43 are provided with the temperature sensor 50 of the temperature that detects engine cooling water.Expression is sent to control device 13 by the signal of these temperature sensor 50 detected temperature.
Engine cooling water, from the exhaust heat exchanger of the discharge side inflow gas engine 30 of circulating pump 47, the heat extraction (heat of exhaust) of reclaiming gas engine 30 is flowed in gas engine 30 afterwards, with these gas engine 30 coolings, this engine cooling water is heated.For example, at engine cooling water, under the situation of discharge side with the exhaust heat exchanger of about 70 ℃ of inflow gas engines 30 of circulating pump 47, the heat extraction (heat of exhaust gas) of recovery gas engine 30 afterwards, in gas engine 30, flow, with these gas engine 30 coolings, this engine cooling water is heated to about 80 ℃.
The engine cooling water that flows into paraffin triple valve 43 from gas engine 30 is when low temperature (for example below 80 ℃), the flow-rate ratio of returning circulating pump 47 from the low temperature side port 43B of paraffin triple valve 43 is more from the flow that the high temperature side port 43C of paraffin triple valve 43 flows to triple valve 45, make gas engine 30 rapid preheatings, when high temperature (for example more than 80 ℃), the flow-rate ratio that flows to triple valve 45 from the high temperature side port 43C of paraffin triple valve 43 is more from the flow that the low temperature side port 43B of paraffin triple valve 43 returns circulating pump 47.
The action of engine cooling apparatus 41 when the following describes refrigeration, heating running.
During the heating running, triple valve 45 switches to heat-exchangers of the plate type 44 sides by control device 13.Like this, from the high temperature side port 43C of paraffin triple valve 43 flow to triple valve 45 engine cooling water, be imported into the heat-exchangers of the plate type 44 from the 1st port 45B of triple valve 45, carry out heat exchange with cold-producing medium and be cooled (heat release), be imported into the exhaust heat exchanger of gas engine 30 through the suction side of circulating pump 47.Thus, may be controlled to the cooling water inflow of the most suitable heating running.
And when cooling operation, triple valve 45 switches to radiator 46 sides by control device 13.So, flow to the engine cooling water of triple valve 45, be imported into from the 2nd port 45C of triple valve 45 and be cooled the radiator 46 (heat release) from the high temperature side port 43C of paraffin triple valve 43, be imported into the exhaust heat exchanger of gas engine 30 through the suction side of circulating pump.
In the above-mentioned formation, leak in addition, at the cooling water that might take place everywhere of engine cooling apparatus 41.This cooling water leakage is placed under the situation about ignoring, cooling water deficiency, cooling water temperature abnormal ascending may take place, possibilities such as engine burn are arranged under the worst situation.
In the present embodiment, have the testing agency 51 of the drive current that detects cooling water circulating pump 47 and judge the controlling organization (decision mechanism) 13 of the generation of stinging gas of cooling water circulating pump 47 according to this detected value.
Fig. 2 represents the determination flow of decision mechanism 13.
This decision mechanism 13 has a reference value that the detected value of two conducts of lower limit reference value alpha and upper limit reference value beta and the drive current of circulating pump 47 compares in engine cooling apparatus 41 running.At first, the driving current value X that judges the circulating pump 47 that obtains by testing agency 51 also low or or situation (S1) except that above-mentioned also higher whether whether than upper limit reference value beta than lower limit reference value alpha.
Under than the also high situation of upper limit reference value beta, be judged to be flase drop and survey, return and begin the place.Between upper limit reference value beta and lower limit reference value alpha, ask (S2) through the mean value Y (or its standard deviation) of a stipulated number detected B drive current, the average poor Z (S3) of Y and above-mentioned driving current value X judges whether this difference Z surpasses to sting gas decision content γ (S4).And then,, be judged to be and sting gas above stinging under the situation of gas decision content γ at this difference Z, this result of determination is added up (S5), this statistical value has reached under the situation of the number of times ε that stipulates within a certain period of time, and gas for having taken place to sting in final decision.
Among the S1, under than the also low situation of lower limit reference value alpha, directly be judged to be and sting gas, skip S2～S4, this result of determination is added up (S5), after, similarly judge (S6).
According to this structure, in a single day even be judged to be under the situation of " stinging gas ", also to consider and detect error etc. and the number of times that is judged to be " stinging gas " is added up, this statistical value has reached under the situation of the number of times ε that stipulates within a certain period of time, final decision is " gas has taken place to sting ", therefore, can make infallible judgement haply.
Under the situation that is judged to be " gas has taken place to sting ", the cooling water of engine cooling apparatus 41 is just not enough.Therefore, ideal situation is under the situation that is judged to be " gas has taken place to sting ", and decision mechanism 13 is by the hydropenic information of mechanisms such as buzzer or indicator lamp output cooling.
In the present embodiment, can detect the cooling water of engine cooling apparatus 41 and leak, therefore can prevent because the cooling water temperature abnormal ascending that the cooling water deficiency causes by judging " stinging gas ".
More than be according to the foregoing description to explanation of the present invention, but the present invention is not limited thereto.
According to the present invention, by judging the gas of stinging of cooling water circulating pump, the cooling water that can detect engine cooling apparatus leaks, and can prevent because the cooling water temperature abnormal ascending that the cooling water deficiency causes.
Claims (5)
1. aircondition, be installed in compressor on the off-premises station by motor driven, has the engine cooling apparatus that utilizes cooling water circulating pump that the cooling water of this engine is circulated and cool off in radiator, it is characterized in that, comprise: detect described cooling water circulating pump drive current testing agency and according to this detected value, judge the decision mechanism of the generation of stinging gas of cooling water circulating pump.
2. aircondition as claimed in claim 1 is characterized in that: described decision mechanism has lower limit a reference value and two a reference values of upper limit a reference value as a reference value with the detected value comparison of described drive current.
3. aircondition as claimed in claim 2, it is characterized in that: described decision mechanism, the first time drive current detected value under the situation below the lower limit a reference value, directly be judged to be and sting gas, under the situation more than the upper limit a reference value, being judged to be flase drop surveys, under situation in addition, the driving current value that repeatedly counts, and average, surpass at this mean value under the situation of stinging the gas decision content of regulation, be judged to be and sting gas.
4. aircondition as claimed in claim 3 is characterized in that: add up being judged to be the number of times of stinging gas, reach within a certain period of time in this statistical number under the situation of number of times of regulation, with regard to final decision gas has taken place to sting.
5. as each described aircondition in the claim 1 to 4, it is characterized in that: detecting under the situation of stinging gas that described cooling water circulating pump has taken place the hydropenic information of output cooling.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP069977/2002 | 2002-03-14 | ||
| JP2002069977A JP3920671B2 (en) | 2002-03-14 | 2002-03-14 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1445487A true CN1445487A (en) | 2003-10-01 |
Family
ID=28035032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN03120577A Pending CN1445487A (en) | 2002-03-14 | 2003-03-14 | Air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3920671B2 (en) |
| KR (1) | KR100557381B1 (en) |
| CN (1) | CN1445487A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339654C (en) * | 2004-05-27 | 2007-09-26 | 三洋电机株式会社 | Engine driving type air-conditioning device |
| CN100465537C (en) * | 2005-05-16 | 2009-03-04 | 三洋电机株式会社 | Air conditioner |
| CN102738483A (en) * | 2011-04-07 | 2012-10-17 | 通用汽车环球科技运作有限责任公司 | Method to detect gross loss in coolant based on current feedback from the high temperature pump |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5317579B2 (en) * | 2008-08-20 | 2013-10-16 | 三洋電機株式会社 | Air conditioner |
| KR101596672B1 (en) * | 2009-06-03 | 2016-02-23 | 엘지전자 주식회사 | Air conditioner and Control process of the same |
| JP5641975B2 (en) * | 2011-02-25 | 2014-12-17 | 日立オートモティブシステムズ株式会社 | Cooling device for internal combustion engine |
| KR101535009B1 (en) * | 2014-02-06 | 2015-07-24 | 현대자동차주식회사 | Method for judging state of cooling water |
| US10947982B2 (en) | 2014-02-06 | 2021-03-16 | Hyundai Motor Company | Method of determining circulation state of cooling water |
| GB2549231B (en) * | 2015-04-01 | 2020-08-12 | Mitsubishi Electric Corp | Air-conditioning apparatus |
| JP7283414B2 (en) * | 2020-02-18 | 2023-05-30 | いすゞ自動車株式会社 | Cooling circuit diagnostic device |
-
2002
- 2002-03-14 JP JP2002069977A patent/JP3920671B2/en not_active Expired - Fee Related
-
2003
- 2003-03-13 KR KR1020030015589A patent/KR100557381B1/en not_active IP Right Cessation
- 2003-03-14 CN CN03120577A patent/CN1445487A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339654C (en) * | 2004-05-27 | 2007-09-26 | 三洋电机株式会社 | Engine driving type air-conditioning device |
| CN100465537C (en) * | 2005-05-16 | 2009-03-04 | 三洋电机株式会社 | Air conditioner |
| CN102738483A (en) * | 2011-04-07 | 2012-10-17 | 通用汽车环球科技运作有限责任公司 | Method to detect gross loss in coolant based on current feedback from the high temperature pump |
| CN102738483B (en) * | 2011-04-07 | 2017-04-12 | 通用汽车环球科技运作有限责任公司 | Method to detect gross loss in coolant based on current feedback from the high temperature pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3920671B2 (en) | 2007-05-30 |
| KR20030074404A (en) | 2003-09-19 |
| KR100557381B1 (en) | 2006-03-06 |
| JP2003269174A (en) | 2003-09-25 |
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